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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
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Preamble
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or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
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12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
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not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
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14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
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be similar in spirit to the present version, but may differ in detail to
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option of following the terms and conditions either of that numbered
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If the Program specifies that a proxy can decide which future
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THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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If the disclaimer of warranty and limitation of liability provided
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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# trimill.xyz
Source code for the Flask server running [trimill.xyz](https://trimill.xyz). Licensed under [GNU GPLv3](https://www.gnu.org/licenses/gpl-3.0.en.html).

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---
title: Test post?
desc: first!!!1!
timestamp: 2022-02-25T00:00:00-05:00
---
Oh dear, what is this? The first post in a "blog", perhaps?
Blog is a rather interesting word. It comes from a shortening of "weblog", web + log, where "web" refers to the interconnected structure of the Internet and "log" is itself a shortening of "logbook", a book used to record readings from a "chip log", a piece of wood used to measure the speed of a ship. In this way, "blog" is really a shortening of "weblogbook".
I am currently writing this post in Markdown, which will be converted into HTML so it can be viewed in browsers. I wonder how formatting looks? **bold**. *italic*. ~~strikethrough~~. `code`. Interesting.
This concludes the test post.

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---
title: 28 Days of Tau - Day 1
desc: The first of 28 posts about the beautiful constant tau.
timestamp: 2022-06-01T00:00:00-04:00
---
Much like any ordinary child, I spent much of my childhood watching math videos on YouTube. During this time I discovered many channels that you might already be familiary with: [3Blue1Brown](https://www.youtube.com/c/3blue1brown), [Numberphile](https://www.youtube.com/user/numberphile), [Stand-up Maths](https://www.youtube.com/user/standupmaths), and many, many others. I credit these videos with inspiring me to continue my fascination with mathematics. However, one of these channels rises above all others in terms of how it shaped me: [Vihart](https://www.youtube.com/user/Vihart).
Vi's videos, although lacking in pixels, more than make up for it with their humor, art, music, and beautiful introductions into various mathematics concepts that one would be lucky to even mention in a school curriculum. These videos introduced me to [$$ \tau $$](https://www.youtube.com/watch?v=FtxmFlMLYRI) (tau) - the superior circle constant, equal to the ratio between a circle's circumference and its radius (two times $$ \pi $$). Each day this June, leading up to June 28 ([tau day](https://tauday.org)), I will be posting a creative demonstration of the beauty of this constant, circles, and mathematics as a whole.
All code used to generate these visualizations will be available [on GitHub](https://github.com/TriMill/28-days-of-tau/) the same day the blog post is released.
## Labyrinth
![Day 1 - Labyrinth](/static/i/blog/tau-day1.png)
This image shows the digits of tau (as represented in a base-10 positional system) by assigning each one an angle, where 0 is directly right and each subsequent digit is $$ \frac{\tau}{10} $$ radians counterclockwise. The first digit is right next to the center, and following digits are further out and connected by arcs.
[GitHub](https://github.com/TriMill/28-days-of-tau/tree/main/day1)

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---
title: 28 Days of Tau - Day 2
desc: The second day of Tau
timestamp: 2022-06-02T00:00:00-04:00
---
## Skyline
![Day 2 - Skyline](/static/i/blog/tau-day2.png)
This image illustrates the digits of the fractional part of tau (0.283184...) in binary. Each rectangle's height represents an approximation of the fractional part of tau, with each having half the width of the previous. Circles are added on top of the rectangles for decoration.
[GitHub](https://github.com/TriMill/28-days-of-tau/tree/main/day2)

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---
title: 28 Days of Tau - Day 3
desc: The third day - polygon inscription
timestamp: 2022-06-03T00:00:00-04:00
---
## Polygons
![Day 3 - Polygons](/static/i/blog/tau-day3.png)
One of the oldest methods known to calculate circle constants is inscribing polygons of increasing side counts within circles. It is easy to find the area of these polygons, and as the number of sides increases the area approaches $$ \frac{\tau}{2} $$ (assuming a circle with radius 1).
[GitHub](https://github.com/TriMill/28-days-of-tau/tree/main/day3)

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from flask import Flask, render_template, send_from_directory, abort, request, make_response
import markdown2
import datetime
import os
import ast
data = {
"feet": [
"🐝",
"Best viewed using Internet Explorer 6 or earlier",
"The HORSE is a noble animal",
"🦀",
"<code>segmentation fault (core dumped)</code>",
"Bees land on thyme",
"☃",
"<code># cat /dev/urandom > /dev/sda</code>",
"<code>:(){ :|: & };:</code>",
"Formal complaints will recieve responses within 5-7 business days",
"<code>++++[-&gt;++++&lt;]&gt;+[-&gt;++++++&gt;+++++++&gt;++&lt;&lt;&lt;]&gt;.&gt;--------..+++++.&lt;-.&gt;--.&gt;--.&lt;++.&lt;.&gt;++++.----.</code>",
"Copywrong © 3034. All rights unreserved.",
"[<span style='text-decoration: underline;'>citation needed</span>]",
"Best viewed with eyes",
"Your browser does not support 7D graphics. Please update for the best user experience.",
"Press SPACE to jump",
"🐀",
"If problems persist, please return to the nearest Blockbuster Video® establishment",
"Oversalt to taste",
"curl -s -L http://bit.ly/10hA8iC | bash",
"Submit footer text via carrier pigeon to <code>[REDACTED]</code>",
"GEORGE is inevitable."
],
"next_theme": {
"system": "dark",
"dark": "light",
"light": "contrast",
"contrast": "system"
}
}
markdown_extras = ["fenced-code-blocks", "footnotes", "strike", "tables", "metadata"]
app = Flask(__name__)
projects = []
proj_dir = os.path.join(app.root_path, app.template_folder, "projects")
for root, dirs, files in os.walk(proj_dir):
for file in files:
try:
with open(os.path.join(root, file)) as f:
metaline = f.read().splitlines()[0]
if metaline.startswith("{% set meta="):
meta = metaline[12:-2].strip()
meta = ast.literal_eval(meta)
meta["path"] = os.path.relpath(root, start=proj_dir)
meta["file"] = file
projects.append(meta)
except Exception as e:
print(e)
data["projects"] = sorted(projects, key=lambda p: [p.get("star") != True, p.get("title")])
blogposts = []
blog_dir = os.path.join(app.root_path, "blog")
for file in os.listdir(blog_dir):
with open(os.path.join(blog_dir, file)) as f:
contents = f.read()
html = markdown2.markdown(contents, extras=markdown_extras)
meta = html.metadata
meta["file"] = file
date_parts = file.removesuffix(".md").split("-")
date = datetime.date(int(date_parts[0]), int(date_parts[1]), int(date_parts[2]))
meta["timestamp"] = datetime.datetime.fromisoformat(meta["timestamp"])
meta["date"] = date
meta["n"] = int(date_parts[3])
meta["url"] = f"/blog/{date.isoformat().replace('-','/')}/{meta['n']}"
blogposts.append(meta)
data["blogposts"] = sorted(blogposts, key=lambda post:[post["date"], post["n"]], reverse=True)
@app.route("/favicon.ico")
def favicon():
path = os.path.join(app.root_path, "static")
return send_from_directory(path, "favicon.ico", mimetype="image/vnd.microsoft.icon")
@app.errorhandler(404)
def four_oh_four(e):
theme = request.cookies.get("theme") or "dark"
return render_template("404.html", data=data, theme=theme)
def load_page(url):
if url.endswith(".html"):
path = os.path.join(app.root_path, app.template_folder, url)
if os.path.exists(path):
theme = request.cookies.get("theme") or "dark"
return render_template(url, data=data, theme=theme)
else:
return abort(404)
else:
return send_from_directory("templates", url)
@app.route("/")
@app.route("/index.html")
def home():
return load_page("index.html")
@app.route("/projects/")
@app.route("/projects/index.html")
def projects_index():
return load_page("projects.html")
@app.route("/projects/<page>/")
@app.route("/projects/<page>/<file>")
def project(page, file="index.html"):
return load_page(f"projects/{page}/{file}")
@app.route("/blog/")
def blog_list():
theme = request.cookies.get("theme") or "dark"
return render_template("blog.html", data=data, theme=theme)
@app.route("/blog/<int:y>/<int:m>/<int:d>/")
@app.route("/blog/<int:y>/<int:m>/<int:d>/<int:n>")
def blog_page(y, m, d, n=0):
date = datetime.date(y, m, d)
print(date.isoformat())
path = os.path.join(app.root_path, "blog", f"{date.isoformat()}-{n}.md")
if os.path.exists(path):
with open(path) as f:
contents = f.read()
content = markdown2.markdown(contents, extras=markdown_extras)
meta = content.metadata
theme = request.cookies.get("theme") or "dark"
return render_template("_blog.html", data=data, theme=theme, content=content, date=date, meta=meta)
else:
return abort(404)
@app.route("/blog/rss.xml")
def blog_rss():
xml = render_template("rss.xml", data=data)
response = make_response(xml)
response.headers["Content-Type"] = "application/rss+xml; charset=utf-8"
return response
@app.route("/blog/atom.xml")
def blog_atom():
xml = render_template("atom.xml", data=data)
response = make_response(xml)
response.headers["Content-Type"] = "application/atom+xml; charset=utf-8"
return response

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@import url('https://fonts.googleapis.com/css2?family=Roboto+Slab:wght@500&family=Source+Sans+Pro:wght@400&family=Fira+Mono&display=swap');
@media (prefers-color-scheme: dark) {
:root[theme="system"] {
--bg: #242328;
--bg-intense: #141316;
--bg-faded: #373338;
--fg: #e0dedc;
--fg-faded: #9b9497;
--accent-1: #96bf59;
--accent-1-dark: #759438;
--accent-2: #789ebf;
--accent-2-dark: #52729d;
--error: #ee6d7d;
}
.only-theme-light {
display: none;
}
}
@media (prefers-color-scheme: light) {
:root[theme="system"] {
--bg: #f6f5f2;
--bg-intense: #ffffff;
--bg-faded: #cbc4c7;
--fg: #28262b;
--fg-faded: #989097;
--accent-1: #0642c3;
--accent-1-dark: #07136d;
--accent-2: #0f7904;
--accent-2-dark: #094a05;
--error: #a50518;
}
.only-theme-dark {
display: none;
}
}
:root[theme="dark"] {
--bg: #242328;
--bg-intense: #141316;
--bg-faded: #373338;
--fg: #e0dedc;
--fg-faded: #9b9497;
--accent-1: #96bf59;
--accent-1-dark: #759438;
--accent-2: #789ebf;
--accent-2-dark: #52729d;
--error: #ee6d7d;
}
:root[theme="light"] {
--bg: #f6f5f2;
--bg-intense: #ffffff;
--bg-faded: #cbc4c7;
--fg: #28262b;
--fg-faded: #989097;
--accent-1: #0642c3;
--accent-1-dark: #07136d;
--accent-2: #0d8101;
--accent-2-dark: #045901;
--error: #a50518;
}
:root[theme="contrast"] {
--bg: white;
--bg-intense: white;
--bg-faded: #c0c0c0;
--fg: black;
--fg-faded: #444444;
--accent-1: blue;
--accent-1-dark: darkblue;
--accent-2: #0088ff;
--accent-2-dark: #004488;
--error: #880000;
}
:root[theme="special"] {
--bg: #ffff00;
--bg-intense: #ffffff;
--bg-faded: #00ff00;
--fg: #ff00ff;
--fg-faded: #ff0000;
--accent-1: #00ffff;
--accent-1-dark: #0000ff;
--accent-2: #000000;
--accent-2-dark: #00ffff;
--error: #00ff88;
font-family: "Comic Sans MS", cursive;
}
:root {
color: var(--fg);
font-family: "Source Sans Pro", sans-serif;
font-size: 20px;
font-weight: 400;
line-height: 1.5;
--link: var(--accent-1);
--link-hover: var(--accent-1-dark);
--link-active: var(--accent-1-dark);
--button: var(--bg-intense);
--button-hover: var(--bg-faded);
--button-active: var(--accent-2-dark);
overflow-wrap: break-word;
}
h1, h2, h3, nav {
font-family: "Roboto Slab", serif;
font-weight: 500;
margin-left: 20px;
margin-top: 16px;
margin-bottom: 16px;
}
h1 {
width: fit-content;
margin-left: auto;
margin-right: auto;
}
body {
background: var(--bg);
width: min(750px, 90vw);
margin: auto;
min-height: 100vh;
display: flex;
flex-direction: column;
}
main {
flex-grow: 1;
}
footer {
text-align: center;
color: var(--fg-faded);
margin-top: auto;
flex-shrink: 0;
min-height: 50px;
font-size: 12px;
}
footer code {
font-size: 12px;
}
nav {
padding-top: 10px;
width: fit-content;
margin: auto;
font-size: 20px;
}
nav > svg {
position: absolute;
top: 16px;
height: 20px;
width: auto;
padding-left: 15px;
padding-right: 10px;
fill: var(--fg);
}
nav > a {
color: var(--fg);
text-decoration: none;
padding-left: 10px;
padding-right: 10px;
}
nav > a:hover { color: var(--fg-faded); }
a {
color: var(--link);
text-decoration: none;
}
:root[theme="contrast"] a {
text-decoration: underline;
}
a:hover { color: var(--link-hover); }
a:active { color: var(--link-active); }
.faded {
color: var(--fg-faded);
}
p {
margin-top: 8px;
margin-bottom: 8px;
}
code, pre {
background-color: var(--bg-intense);
padding-left: 3px;
padding-right: 3px;
padding-top: 2px;
padding-bottom: 2px;
border-radius: 3px;
font-family: "Fira Mono", monospace;
font-size: 18px;
}
pre {
padding-top: 3px;
padding-bottom: 3px;
padding-left: 12px;
border-left: 5px solid var(--accent-2-dark);
}
button, input, select {
color: var(--fg);
background-color: var(--bg-faded);
border: 2px solid var(--fg-faded);
border-radius: 3px;
font-family: "Source Sans Pro", sans-serif;
font-size: 16px;
}
button:active, input[type=button]:active {
background-color: var(--bg);
}
button:active, input[type=button]:active {
background-color: var(--bg);
}
.error {
color: var(--error);
}

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{% set meta={"title": "404", "desc": "Page not found"} %}
{% extends "/_base.html" %}
{% block content %}
<p>The page you have tried to access does not exist. How did you get here?</p>
{% if request.args.get("source") == "here" %}
<p>&gt; From another page on this site</p>
<p>Oops! Please <a href="https://github.com/TriMill/trimill.xyz/issues/">create an issue</a> so I can fix this.</p>
<p><a href="/">Return home</a></p>
{% elif request.args.get("source") == "other"%}
<p>&gt; From somewhere else</p>
<p>Unfortunately I can only fix my own mistakes. Please inform that website's owner that their link no longer works.</p>
<p><a href="/">Return home</a></p>
{% else %}
<p>&gt; <a href="?source=here">From another page on this site</a></p>
<p>&gt; <a href="?source=other">From somewhere else</a></p>
{% endif %}
{% endblock %}

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<!DOCTYPE html>
<html lang="en" theme="{{ theme }}">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>{{ meta.title }} - TriMill</title>
<meta name="author" content="TriMill" />
<meta name="description" content="{{ meta.desc }}" />
<meta property="og:description" content="{{ meta.desc }}" />
<meta property="og:title" content="{{ meta.title }}" />
<meta property="og:site_name" content="trimill.xyz" />
<link rel="icon" type="image/png" sizes="16x16" href="{{ url_for('static', filename='logo16.png') }}" />
<link rel="icon" type="image/png" sizes="32x32" href="{{ url_for('static', filename='logo32.png') }}" />
<link rel="icon" type="image/png" sizes="64x64" href="{{ url_for('static', filename='logo64.png') }}" />
<link rel="icon" type="image/png" sizes="320x320" href="{{ url_for('static', filename='logo320.png') }}" />
<link rel="icon" type="image/png" sizes="640x640" href="{{ url_for('static', filename='logo640.png') }}" />
<link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}" />
<style>
body {
{% if meta.fullscreen == True %}
width: 100%;
{% else %}
width: min({{ meta.pagewidth or "750px"}}, 90vw);
{% endif %}
}
</style>
<meta itemprop="name" content="{{ meta.title }}" />
<meta itemprop="description" content="{{ meta.desc }}" />
<script>
function updateTheme() {
let theme = "{{ theme }}" || "dark";
let new_theme;
if(event.shiftKey) {
new_theme = "special";
} else {
new_theme = {{ data.next_theme | safe }}[theme] || "dark";
}
let expiry = new Date().getTime() + 1000*60*60*24*90;
document.cookie = "theme=" + new_theme
+ ";expires=" + expiry
+ ";path=/";
location.reload();
}
</script>
{% block head %} {% endblock %}
</head>
<body>
{% if meta.fullscreen != True %}
<nav>
<a href="/">Home</a> ·
<a href="/projects/">Projects</a> ·
<a href="/blog/">Blog™</a> ·
<svg xmlns="http://www.w3.org/2000/svg" width="8" height="8" viewBox="0 0 8 8" onclick="updateTheme()">
{% if theme == "dark" %}
<path d="M2.72 0c-1.58.53-2.72 2.02-2.72 3.78 0 2.21 1.79 4 4 4 1.76 0 3.25-1.14 3.78-2.72-.4.13-.83.22-1.28.22-2.21 0-4-1.79-4-4 0-.45.08-.88.22-1.28z" />
<title>Dark theme</title>
{% elif theme == "light" %}
<path d="M4 0c-.28 0-.5.22-.5.5s.22.5.5.5.5-.22.5-.5-.22-.5-.5-.5zm-2.5 1c-.28 0-.5.22-.5.5s.22.5.5.5.5-.22.5-.5-.22-.5-.5-.5zm5 0c-.28 0-.5.22-.5.5s.22.5.5.5.5-.22.5-.5-.22-.5-.5-.5zm-2.5 1c-1.1 0-2 .9-2 2s.9 2 2 2 2-.9 2-2-.9-2-2-2zm-3.5 1.5c-.28 0-.5.22-.5.5s.22.5.5.5.5-.22.5-.5-.22-.5-.5-.5zm7 0c-.28 0-.5.22-.5.5s.22.5.5.5.5-.22.5-.5-.22-.5-.5-.5zm-6 2.5c-.28 0-.5.22-.5.5s.22.5.5.5.5-.22.5-.5-.22-.5-.5-.5zm5 0c-.28 0-.5.22-.5.5s.22.5.5.5.5-.22.5-.5-.22-.5-.5-.5zm-2.5 1c-.28 0-.5.22-.5.5s.22.5.5.5.5-.22.5-.5-.22-.5-.5-.5z"/>
<title>Light theme</title>
{% elif theme == "contrast" %}
<path d="M4 0c-2.2 0-4 1.8-4 4s1.8 4 4 4 4-1.8 4-4-1.8-4-4-4zm0 1c1.66 0 3 1.34 3 3s-1.34 3-3 3v-6z" />
<title>High contrast theme</title>
{% elif theme == "special" %}
<image href="/static/i/apioform1.png" width="8" height="8" />
transform="translate(0 1)" />
<title>Ocular apiation occuring, do not close page until eyes have been apiated to completion.</title>
{% else %}
<path d="M3.41 0a.5.5 0 0 0-.13.06l-3 1.5a.5.5 0 1 0 .44.88l3-1.5a.5.5 0 0 0-.31-.94zm1 1.5a.5.5 0 0 0-.13.06l-4 2a.5.5 0 1 0 .44.88l4-2a.5.5 0 0 0-.31-.94zm0 2a.5.5 0 0 0-.13.06l-3 1.5a.5.5 0 0 0 .22.94h2a.5.5 0 0 0 .16-1l1.06-.56a.5.5 0 0 0-.31-.94zm-2.56 3.5a.5.5 0 0 0 .16 1h1a.5.5 0 1 0 0-1h-1a.5.5 0 0 0-.09 0 .5.5 0 0 0-.06 0z" transform="translate(1)" />
<title>System default theme</title>
{% endif %}
</svg>
</nav>
<hr style="width: 100%"/>
{% block title %}
<h1>{{ meta.title }}</h1>
{% endblock %}
{% endif %}
<main>
{% block content %}{% endblock %}
</main>
{% if meta.fullscreen != True %}
<footer>
{{ data.feet | random | safe }}
</footer>
{% endif %}
</body>
</html>

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{% extends "/_base.html" %}
{% block head %}
<!-- KaTex -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/katex.min.css" integrity="sha384-Xi8rHCmBmhbuyyhbI88391ZKP2dmfnOl4rT9ZfRI7mLTdk1wblIUnrIq35nqwEvC" crossorigin="anonymous">
<script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/katex.min.js" integrity="sha384-X/XCfMm41VSsqRNQgDerQczD69XqmjOOOwYQvr/uuC+j4OPoNhVgjdGFwhvN02Ja" crossorigin="anonymous"></script>
<script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/contrib/auto-render.min.js" integrity="sha384-+XBljXPPiv+OzfbB3cVmLHf4hdUFHlWNZN5spNQ7rmHTXpd7WvJum6fIACpNNfIR" crossorigin="anonymous"></script>
<script>
document.addEventListener("DOMContentLoaded", function() {
renderMathInElement(document.body, {
delimiters: [
{left: '$$', right: '$$', display: false},
{left: '\\[', right: '\\]', display: true},
],
throwOnError : false
});
});
</script>
<style>
img {
display: block;
max-width: 80%;
margin-left: auto;
margin-right: auto;
}
</style>
{% endblock %}
{% block content %}
<h1>{{ title }}</h1>
<p class="faded">{{ date.isoformat() }}</p>
<article>
{{ content | safe }}
</article>
{% endblock %}

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<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>Blog™</title>
<link href="https://trimill.xyz/blog/atom.xml" rel="self" />
<link href="https://trimill.xyz/blog/" />
<updated>{{ data.blogposts[0].timestamp.isoformat() }}</updated>
<author>
<name>TriMill</name>
</author>
<id>https://trimill.xyz/blog/</id>
{% for post in data.blogposts %}
<entry>
<title>{{ post.title }}</title>
<link href="https://trimill.xyz/{{ post.url }}" />
<summary>{{ post.desc }}</summary>
<updated>{{ post.timestamp.isoformat() }}</updated>
<id>https://trimill.xyz/{{ post.url }}</id>
</entry>
{% endfor %}
</feed>

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{% set meta={"title": "Blog™", "desc": "Blog™"} %}
{% extends "/_base.html" %}
{% block content %}
<p>Welcome to Blog™. I may on occasion add pages to here, in which case the list below will update. You can also
get updates delivered directly to you using the <a href="/blog/rss.xml">RSS</a> or <a href="/blog/atom.xml">Atom</a> feeds.</p>
{% for post in data.blogposts %}
<hr style="width: 20%"/>
<h2 style="margin-top: 10px; margin-bottom: 10px">
<a href="{{ post.url }}">{{ post.title }}</a>
</h2>
<p class="faded">{{ post.date.isoformat() }}</p>
<p>{{ post.desc }}</p>
{% endfor %}
{% endblock %}

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{% set meta = {"title": "Home", "desc": "Home page"} %}
{% extends "/_base.html" %}
{% block content %}
<p>
Welcome! On this website you may view a multitude of content, including numerous
<a href="/projects/">projects</a>, a <a href="/blog/">Blog™</a>, and various other information contained on
this page. Enjoy.
</p>
<h2>About</h2>
<p>
I am a person (proof of this fact is left to the reader) who has been granted an internet connection and uses
it extensively for assorted purposes. Much of my time not spent sleeping is spent doing mathematics,
programming (preferably in Rust), Minecraft, conlangs, twisty puzzles, and chess (although I am quite bad at it).
</p>
<h2>GEORGE</h2>
<p>
<a href="https://george.gh0.pw">GEORGE</a> is a webring of which I am a member. Use the standard-issue GEORGEbox
below to view the GEORGE homepage or access the previous and next members in the ring. GEORGE is inevitable.
</p>
{% if theme == "light" %}
<iframe height="50" src="https://george.gh0.pw/embed.cgi?trimill&c_bg=%23f6f5f2&c_fg=%2328262b&c_links=%230642c3&c_george=%230d8101" style="border:none;width:100%;" sandbox="allow-top-navigation"></iframe>
{% elif theme == "contrast" %}
<iframe height="50" src="https://george.gh0.pw/embed.cgi?trimill" style="border:none;width:100%;" sandbox="allow-top-navigation"></iframe>
{% elif theme == "special" %}
<iframe height="50" src="https://george.gh0.pw/embed.cgi?trimill&c_bg=%23ffff00&c_fg=%23ff00ff&c_links=%2300ffff&c_george=%2300ff00" style="border:none;width:100%;" sandbox="allow-top-navigation"></iframe>
{% elif theme == "system" %}
<iframe height="50" class="only-theme-dark" src="https://george.gh0.pw/embed.cgi?trimill&c_bg=%23242328&c_fg=%23e0dedc&c_links=%2396bf59&c_george=%23789ebf" style="border:none;width:100%;" sandbox="allow-top-navigation"></iframe>
<iframe height="50" class="only-theme-light" src="https://george.gh0.pw/embed.cgi?trimill&c_bg=%23f6f5f2&c_fg=%2328262b&c_links=%230642c3&c_george=%230d8101" style="border:none;width:100%;" sandbox="allow-top-navigation"></iframe>
{% else %}
<iframe height="50" src="https://george.gh0.pw/embed.cgi?trimill&c_bg=%23242328&c_fg=%23e0dedc&c_links=%2396bf59&c_george=%23789ebf" style="border:none;width:100%;" sandbox="allow-top-navigation"></iframe>
{% endif %}
<h2>Other places I exist</h2>
<p>
Email: trimill012 ("at" sign) gmail (full stop) com <br />
Discord: TriMill#6898 <br />
GitHub: <a href="https://github.com/TriMill/">TriMill</a> <br />
Youtube: <a href="https://www.youtube.com/channel/UC2rXSxR9jbihjAE8dAIKCaw">TriMill</a> <br />
</p>
<h2>Source code & attribution</h2>
<p>
The source code for this website is available <a href="https://github.com/TriMill/trimill.xyz/">on GitHub</a> and is
released under the <a href="https://www.gnu.org/licenses/gpl-3.0.en.html">GNU GPLv3</a> free and open-source license.
It is built using the <a href="https://flask.palletsprojects.com/en/2.1.x/">Flask</a> web framework and incorporates
icons from <a href="https://useiconic.com/open">Open Iconic</a>.
</p>
{% endblock %}

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{% set meta={"title": "Projects", "desc": "List of projects I have made"} %}
{% extends "/_base.html" %}
{% block content %}
<p>Here are some projects I have made over the past few years.</p>
<ul>
{% for site in data.projects %}
{% if site.hidden != True %}
<li>
{% if site.star == True %}
★
{% endif %}
<a href="/projects/{{ site.path }}/">{{ site.title }}</a> · {{ site.desc | safe }}
</li>
{% endif %}
{% endfor %}
</ul>
{% endblock %}

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{{
function toFixed(x) {
if (Math.abs(x) < 1.0) {
var e = parseInt(x.toString().split('e-')[1]);
if (e) {
x *= Math.pow(10,e-1);
x = '0.' + (new Array(e)).join('0') + x.toString().substring(2);
}
} else {
var e = parseInt(x.toString().split('+')[1]);
if (e > 20) {
e -= 20;
x /= Math.pow(10,e);
x += (new Array(e+1)).join('0');
}
}
x = x.toString();
if(!x.includes(".")) {
x += ".";
}
return x;
}
class OpAdd {
constructor(left, right) {
this.left = left;
this.right = right;
}
gen(ctx) {
return "(" + this.left.gen(ctx) + "+" + this.right.gen(ctx) + ")";
}
reduce() {
const left = this.left.reduce();
const right = this.right.reduce();
if(left !== null && right !== null) {
return new Vec2(left.re + right.re, left.im + right.im);
} else {
if(left !== null) {
this.left = left;
} else if(right !== null) {
this.right = right;
}
return null
}
}
}
class OpSub {
constructor(left, right) {
this.left = left;
this.right = right;
}
gen(ctx) {
return "(" + this.left.gen(ctx) + "-" + this.right.gen(ctx) + ")";
}
reduce() {
const left = this.left.reduce();
const right = this.right.reduce();
if(left !== null && right !== null) {
return new Vec2(left.re - right.re, left.im - right.im);
} else {
if(left !== null) {
this.left = left;
} else if(right !== null) {
this.right = right;
}
return null
}
}
}
class OpNeg {
constructor(arg) {
this.arg = arg;
}
gen(ctx) {
return "(-(" + this.arg.gen(ctx) + "))";
}
reduce() {
const arg = this.arg.reduce();
if(arg !== null) {
return new Vec2(-arg.re, -arg.im);
} else {
return null
}
}
}
class Fn {
constructor(name, args, argoff) {
this.name = name;
this.args = args;
this.argoff = argoff;
}
gen(ctx) {
let name = this.name + "$" + this.args.length;
if(ctx[name] === undefined) {
throw "Error: the function " + this.name + " does not exist or has the wrong number of arguments";
}
if(this.argoff != null) {
name += "_o";
}
if(ctx[name] === undefined) {
throw "Error: the function " + this.name + " cannot take an argument offset";
}
let s = ctx[name] + "(";
if(this.argoff != null) {
s += toFixed(this.argoff) + ",";
}
for(const a of this.args) {
s += a.gen(ctx) + ",";
}
s = s.slice(0,-1) + ")";
return s;
}
reduce() {
for(const i in this.args) {
const a = this.args[i];
const r = a.reduce();
if(r !== null) {
this.args[i] = r;
}
}
return null;
}
}
class Variable {
constructor(name) {
this.name = name;
}
gen(ctx) {
if(ctx[this.name] === undefined) {
throw "Error: " + this.name + " is not a variable";
}
return ctx[this.name];
}
reduce() {
return null;
}
}
class Vec2 {
constructor(re, im) {
this.re = re;
this.im = im;
}
gen(ctx) {
return "vec2(" + toFixed(this.re) + "," + toFixed(this.im) + ")";
}
reduce() {
return this;
}
}
class Conditional {
constructor(cond) {
this.cond = cond;
}
gen(ctx) {
let res = "";
for(const part of this.cond) {
if(part.length == 2) {
res += "(" + part[0].gen(ctx) + ").x>0.0 ? (" + part[1].gen(ctx) + ") : ";
} else {
res += part[0].gen(ctx);
}
}
return "(" + res + ")";
}
reduce() {
return null;
}
}
}}
Level0
= head:Level1 tail:(_ ("+" / "-") _ Level1)* {
return tail.reduce(function(result, element) {
if (element[1] === "+") { return new OpAdd(result, element[3]); }
if (element[1] === "-") { return new OpSub(result, element[3]); }
}, head);
}
Level1
= head:Level2 tail:(_ ("*" / "/") _ Level2)* {
return tail.reduce(function(result, element) {
if (element[1] === "*") { return new Fn("*", [result, element[3]]); }
if (element[1] === "/") { return new Fn("/", [result, element[3]]); }
}, head);
}
Level2
= head:(Level3 _ "^" _)* tail:Level3 {
return head.reverse().reduce(function(result, element) {
return new Fn("^", [element[0], result]);
}, tail);
}
Level3
= _ "(" _ expr:Level0 _ ")" { return expr; }
/ _ "{" _ cond:ConditionalInner _ "}" { return new Conditional(cond); }
/ _ name:Name _ argoff:("[" _ ArgOffset _ "]" _)? "(" args:ParameterList ")" {
if(typeof(name) == "string") {
return new Fn(name, args.reverse(), argoff == null ? null : argoff[2]);
} else {
throw "Error: i is not a function";
}
}
/ _ name:Name {
if(typeof(name) == "string") {
return new Variable(name);
} else {
return name;
}
}
/ Imag / Real
/ _ "-" e:Level1 { return new OpNeg(e); }
ArgOffset
= n:Real _ ("tau" / "τ" / "t") {
console.log("AAA", n.re);
return n.re * 6.283185307179586;
}
/ n:Real _ ("pi" / "π" / "p") {
return n.re * 3.141592653589793;
}
/ n:Real {
return n.re;
}
ParameterList
= _ arg:Level0 _ "," lst:ParameterList {
lst.push(arg);
return lst;
}
/ _ arg:Level0 _ { return [arg]; }
ConditionalInner
= _ cond:Level0 _ ":" _ expr:Level0 _ "," _ rest:ConditionalInner _ { return [].concat([[cond, expr]],rest); }
/ _ expr:Level0 _ { return [[expr]]; }
Name "varname"
= [a-zA-Z_√Γπτγ]+ {
if(text() === "i") {
return new Vec2(0,1);
} else {
return text();
}
}
Real "real"
= _ Number {
return new Vec2(parseFloat(text()),0);
}
Imag "imag"
= _ Number "i" {
return new Vec2(0,parseFloat(text()));
}
Number "number"
= [+-]? Digits "." Digits
/ [+-]? Digits "."
/ [+-]? "." Digits
/ [+-]? Digits
Digits "digits"
= [0-9]+
_ "whitespace"
= [ \t\n\r]*

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{% set meta={"title": "Complex Grapher Documentation", "desc": "Documentation for Complex Grapher", "hidden": True} %}
{% extends "/_base.html" %}
{% block content %}
<p>
Complex Grapher is an online tool to visualize complex functions using <a href="https://en.wikipedia.org/wiki/Domain_coloring">domain coloring</a>. This help guide assumes basic knowledge about how complex numbers and domain coloring work, Wikipedia links will be provided for further explanation.
</p>
<p>Complex Grapher requires a browser that supports WebGL 3.0 or greater.</p>
<h2>The user interface</h2>
<p>
<ul>
<li><b>Equation</b> - Enter the function you want to graph here, in terms of <code>z</code>. See below for information about the syntax of expressions.</li>
<li><b>Axis scale</b> - Set the bounds of the real and imaginary axes. The first number in each pair is the left/bottom side of the canvas, the second number is the top/right side.</li>
<li><b>Shading amount</b> - Control how much black/white shading is applied to numbers close to 0 or ∞. Furthest left is no shading (however, values equal to 0 or ∞ will still be black and white, respectively).</li>
<li><b>Swap black and white</b> - Check this to instead use black for ∞ and white for 0.</li>
<li><b>Draw contours</b> - Draw rings at integer distances from the origin. The first ring (about the unit circle) is white, the rest are black.</li>
<li><b>Smooth coloring</b> - Use a smoother coloring method.</li>
<li><b>Iteration</b>
This section allows you to iterate the function you put in above a set number of times (that is, call the function on its own output repeatedly). If iteration is enabled, you may also use the variables <code>c</code> and <code>n</code> in your function. <code>c</code> will remain constant throughout the iterations, and <code>n</code> represents the current iteration number (starting with 0).
<ul>
<li><b>Iterations</b> - How many times to iterate the function.</li>
<li><b>z₀(z)</b> - The initial value for <code>z</code></li>
<li><b>c(z)</b> - The initial value for <code>c</code></li>
</ul>
</li>
<li><b>Arg offset</b> - use different branches of functions by changing where the branch cut of <code>arg(z)</code> is.</li>
<li><b>DPI</b> - Control the resolution of the canvas. "single" uses the browser's default, "double" uses twice that on both axes (resulting in 4 times as many pixels), "quadruple" uses four times that (16 times as many pixels). These links will save the graph as a URL parameter and reload the page.</li>
<li><b>Graph</b> - Self-explanatory.</li>
<li><b>Generate link</b> - Generate a link containing all of the equations and settings currently applied.</li>
</ul>
</p>
<h2>Syntax</h2>
<div class="codeblock"><pre>
level0 := level1 (("+" | "-") level1)*
level1 := level2 (("*" | "/") level2)*
level2 := (level3 "^")* level3
level3 := "(" level0 ")"
| "{" condition "}"
| name "(" (level0 ",")* level0 ")"
| name
| imag
| real
| "-" level1
condition := level0 ":" level0 "," condition
| level0
name := /[a-zA-Z_√Γπτγ]+/
real := number
imag := number "i"
number := ("+" | "-")? digits "." digits
| ("+" | "-")? digits "."
| ("+" | "-")? "." digits
| ("+" | "-")? digits
digits := /[0-9]+/
whitespace = /[ \t\n\r]*/
</pre></div>
<h3>Numbers</h3>
<p>
Real numbers can be written in standard base-10 form (ex. <code>37</code>, <code>-1045</code>, <code>33.26258</code>). Imaginary numbers can be written similarly, but followed by an <code>i</code> (ex. <code>3i</code>, <code>-25i</code>, <code>.37i</code>). <code>i</code> can also be used alone. Complex numbers can be expressed simply as the sum of a real and an imaginary number (ex. <code>3-5i</code>, <code>.7+52i</code>).
</p>
<h3>Operators</h3>
<p>
The five basic operators are <code>+</code>, <code>-</code>, <code>*</code>, <code>/</code>, and <code>^</code> (exponentiation). These follow the normal order of operations, with <code>^</code> being right associative (so 2^3^4 = 2^(3^4), not (2^3)^4). Parentheses <code>( )</code> can be used for grouping.
</p>
<h3>Variables and constants</h3>
<p>
In <code>f(z)</code>, the variables <code>z</code>, <code>c</code>, and <code>n</code> are available. <code>z</code> is the argument of the function, and <code>c</code> and <code>n</code> are used for iteration as described above. In <code>z₀(z)</code> and <code>c(z)</code>, the only variable available is <code>z</code>.
</p>
<p>
The constants <code>e</code>, <code>tau</code> or <code>τ</code>, <code>pi</code> or <code>π</code> (= τ/2), and <code>emg</code> or <code>γ</code> (the <a href="https://en.wikipedia.org/wiki/Euler%27s_constant">Euler–Mascheroni constant</a>) are available
</p>
<h3>Functions</h3>
<p>
Functions are written as the funciton name followed by the argument in parentheses. All functions only take one argument. Examples: <code>sin(z)</code>, <code>gamma(3+2i)</code>, <code>conj(1/z)</code>.
</p>
<p>
The following functions are available:
<ul>
<li><code>re</code> and <code>im</code> - the real or imaginary part of a complex number, respectively</li>
<li><code>abs</code> - absolute value (Euclidean distance from the origin)</li>
<li><code>arg</code> - the argument (angle about the origin in the range (-π,π])</li>
<li><code>norm</code> - the norm (equal to <code>abs(z)^2</code> and <code>re(z)^2 + im(z)^2</code>)</li>
<li><code>conj</code> - complex conjugate</li>
<li><code>sqrt</code> or <code>√</code> - square root (equal to <code>z^0.5</code>)</li>
<li><code>root</code> - nth root (first argument is radicand, second is index)</li>
<li><code>exp</code> - the exponential function (equal to <code>e^z</code>)</li>
<li><code>ln</code> - the natural logarithm</li>
<li><code>log</code> - logarith with base, where the base is the second argument (defaults to e)</li>
<li><code>recip</code> - reciprocal, equivalent to <code>1/z</code></li>
<li><code>sin cos tan</code> - sine, cosine and tangent</li>
<li><code>asin acos atan</code> - <a href="https://en.wikipedia.org/wiki/Inverse_trigonometric_functions">inverse</a> sine, cosine and tangent</li>
<li><code>sinh cosh tanh</code> - <a href="https://en.wikipedia.org/wiki/Hyperbolic_functions">hyperbolic</a> sine, cosine and tangent</li>
<li><code>asinh acosh atanh</code> - <a href="https://en.wikipedia.org/wiki/Inverse_hyperbolic_functions">inverse hyperbolic</a> sine, cosine and tangent</li>
<li><code>gamma</code> or <code>Γ</code> - the <a href="https://en.wikipedia.org/wiki/Gamma_function">gamma</a> function</li>
<li><code>unitcircle</code> - set abs(z) to 1, normalizing the complex number to the unit circle</li>
<li><code>signre</code> - the sign of the real part of z (1 if <code>re(z)</code>&gt;0, -1 if <code>re(z)</code>&lt;0, 0 if <code>re(z)</code>=0</li>
<li><code>signim</code> - the sign of the imaginary part of z (1 if <code>im(z)</code>&gt;0, -1 if <code>im(z)</code>&lt;0, 0 if <code>im(z)</code>=0</li>
<li><code>lambertw</code> - the <a href="https://en.wikipedia.org/wiki/Lambert_W_function">Lambert W function</a></li>
</ul>
</p>
<p>
The following functions are currently experimental and may be changed or removed later:
</p>
<ul>
<li><code>digamma</code> - the <a href="https://en.wikipedia.org/wiki/Digamma_function">digamma function</a></li>
<li><code>loggamma</code> - the <a href="https://en.wikipedia.org/wiki/Gamma_function#The_log-gamma_function">log-gamma function</a></li>
<li><code>loggamma</code> or <code>lngamma</code> - the <a href="https://en.wikipedia.org/wiki/Gamma_function#The_log-gamma_function">log-gamma function</a></li>
<li><code>erf</code> - the <a href="https://en.wikipedia.org/wiki/Error_function">error function</a></li>
<li><code>eulerfn</code> - the <a href="https://en.wikipedia.org/wiki/Euler_function">Euler function</a></li>
<li><code>ti</code> - the <a href="https://en.wikipedia.org/wiki/Inverse_tangent_integral">inverse tangent integral</a></li>
</ul>
<h3>Conditionals</h3>
<p>
Conditionals (using curly braces <code>{ }</code>) can be used like if-statements to pick an expression from a list. They take the form <code>{condition1: expression1, condition2: expression2, expression3}</code>. The conditions are evaluated from left to right, once the first true one is reached the corresponding expression is evaluated. The final expression (with no condition) acts as a fallback if none of the previous conditions were true. A condition is true if the real part of the result is strictly positive.
</p>
<p>
Example: <code>{z-3: 2*z, z-2: z^2, 1/z}</code> will evaluate to <code>2*z</code> whenever <code>re(z)</code>&gt;3 (<code>re(z-3)</code>&gt;0), otherwise to <code>z^2</code> whenever <code>re(z)</code>&gt;2, otherwise to <code>1/z</code>.
</p>
<p>
Conditionals are currently experimental and may be changed later.
</p>
<h2>A word of caution</h2>
<p>
WebGL is very prone to crashing, especially when using iteration. Some operations, like addition and multiplication, are very fast and should not cause too many problems. Others, like <code>exp(z)</code> and <code>sinh(z)</code> are fairly fast since they are implemented directly in the hardware. But some functions, like <code>lambertw(z)</code> and <code>gamma(z)</code> are a lot slower due to their slow implementations. For the best performance, avoid mixing slow functunctions, high iteration counts, and high DPI settings together.
</p>
<h2>Example graphs</h2>
<ul>
<li><a href=".?src=eyJleHByIjoiKHpeMyArIHopLygyKnpeMiAtIDEpIiwiYXhlcyI6WyItMiIsIjIiLCItMiIsIjIiXSwic2hhZGluZyI6IjAuNDUiLCJzd2FwYnciOmZhbHNlLCJjb250b3VycyI6ZmFsc2UsIml0ZXJtb2RlIjpmYWxzZX0">Rational equation</a></li>
<li><a href=".?src=eyJleHByIjoiZXhwKDEveikiLCJheGVzIjpbIi0xIiwiMSIsIi0xIiwiMSJdLCJzaGFkaW5nIjoiMC41Iiwic3dhcGJ3IjpmYWxzZSwiY29udG91cnMiOmZhbHNlLCJpdGVybW9kZSI6ZmFsc2V9">Essential singularity</a></li>
<li><a href=".?src=eyJleHByIjoiel56Xnpeel56IiwiYXhlcyI6WyItOCIsIjgiLCItOCIsIjgiXSwic2hhZGluZyI6IjAuNDUiLCJzd2FwYnciOmZhbHNlLCJjb250b3VycyI6ZmFsc2UsIml0ZXJtb2RlIjpmYWxzZX0=">Power Tower</a></li>
<li><a href=".?src=eyJleHByIjoiY156IiwiYXhlcyI6WyItOCIsIjgiLCItOCIsIjgiXSwic2hhZGluZyI6IjAuNDUiLCJzd2FwYnciOmZhbHNlLCJjb250b3VycyI6ZmFsc2UsIml0ZXJtb2RlIjp7Iml0ZXJzIjoiMjAyIiwiemluaXQiOiJ6IiwiY2luaXQiOiJ6In19">Infinite power tower</a></li>
<li><a href=".?src=eyJleHByIjoieiAtICh6XjMgLSAxKS8oMyp6XjIpIiwiYXhlcyI6WyItNSIsIjUiLCItNSIsIjUiXSwic2hhZGluZyI6IjAuNDUiLCJzd2FwYnciOmZhbHNlLCJjb250b3VycyI6ZmFsc2UsIml0ZXJtb2RlIjp7Iml0ZXJzIjoiMjAiLCJ6aW5pdCI6InoiLCJjaW5pdCI6IjAifX0=">Newton's fractal</a></li>
<li><a href=".?src=eyJleHByIjoiel4yICsgYyIsImF4ZXMiOlsiLTIiLCIxIiwiLTEuNSIsIjEuNSJdLCJzaGFkaW5nIjoiMC41Iiwic3dhcGJ3Ijp0cnVlLCJjb250b3VycyI6ZmFsc2UsIml0ZXJtb2RlIjp7Iml0ZXJzIjoiMjAwIiwiemluaXQiOiIwIiwiY2luaXQiOiJ6In19">The Mandelbrot set</a></li>
<li><a href=".?src=eyJleHByIjoieiAqICgxIC0gY14obisxKSkiLCJheGVzIjpbIi0xLjEiLCIxLjEiLCItMS4xIiwiMS4xIl0sInNoYWRpbmciOiIwLjQ1Iiwic3dhcGJ3IjpmYWxzZSwiY29udG91cnMiOmZhbHNlLCJpdGVybW9kZSI6eyJpdGVycyI6IjYwIiwiemluaXQiOiIxIiwiY2luaXQiOiJ6In19">The Euler function as an infinte product</a></li>
<ul>
{% endblock %}

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{% set meta={"title": "Complex Grapher", "desc": "Graph complex functions", "pagewidth": "1400px"} %}
{% extends "/_base.html" %}
{% block head %}
<style>
.left > span { display: block; }
.colored { color: var(--accent-2); }
#errors { color: #ff4444; }
.short { width: 70px; }
main {
display: flex;
flex-direction: row;
flex-wrap: wrap;
}
.left, .right {
padding: 30px;
}
.category {
color: var(--accent-1);
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gl-matrix/2.8.1/gl-matrix-min.js"
integrity="sha512-zhHQR0/H5SEBL3Wn6yYSaTTZej12z0hVZKOv3TwCUXT1z5qeqGcXJLLrbERYRScEDDpYIJhPC1fk31gqR783iQ=="
crossorigin="anonymous" defer>
</script>
<script src="webgl_base.js"></script>
<script src="grammar.js"></script>
<script src="main.js"></script>
{% endblock %}
{% block content %}
<div class="left">
<span class="category">——— Equation ———</span>
<span>f(z) = <input type="text" id="fz" value="sin(z)/z" style="width: 400px" /></span>
<span class="category">——— Axis scale ———</span>
<span>Real axis: &nbsp;&nbsp;&nbsp;&nbsp;
<input type="text" class="short" id="rmin" value="-10" />
to <input type="text" class="short" id="rmax" value="10" />
</span>
<span>Imaginary axis:
<input type="text" class="short" id="imin" value="-10" />
to <input type="text" class="short" id="imax" value="10" />
</span>
<span class="category">——— Shading options ———</span>
<span>Shading amount: <input type="range" min="0" max="0.95" value="0.5" step="0.05" id="shading" /></span>
<span><input type="checkbox" id="swapbw" /> Swap black and white</span>
<span><input type="checkbox" id="drawcontours" /> Draw contours</span>
<span><input type="checkbox" id="smoothcolor" /> Smooth coloring</span>
<span>
<span class="category">——— Iteration ———</span>
<input type="checkbox" id="enable_iters" onchange="changeIterationMode();" />
</span>
<div id="iteration_mode" hidden>
<div>Iterations: <input type="number" id="iterations" value="1" /></div>
<div>z₀(z) = <input type="text" id="init_z" value="z" style="width: 300px" /></div>
<div>c(z) = <input type="text" id="init_c" value="0" style="width: 300px" /></div>
</div>
<!--
<span>
<span class="category">——— Approximation settings ———</span>
<input type="checkbox" id="show_approx" onchange="let x=document.getElementById('approx_settings');x.hidden=!x.hidden;" />
</span>
<div id="approx_settings" hidden>
<span>coming soon!</span>
</div>
-->
<!--
<span class="category">——— Constants ———</span>
<div id="constants-wrapper"></div>
<input type="button" id="const-add" value="[+]" style="color: #44ff44" onclick="addConstant()" />
-->
<span class="category">——— DPI ———</span>
<span>
<a href="javascript:void(0)" onclick="dpi=1; encodeURLParams()">single</a>
<a href="javascript:void(0)" onclick="dpi=2; encodeURLParams()">double</a>
<a href="javascript:void(0)" onclick="dpi=4; encodeURLParams()">quadruple</a>
</span>
<span>&nbsp;</span>
<span>
<input type="button" id="go" value="Graph" onclick="graph()"/ >
<a href="javascript:void(0)" onclick="encodeURLParams()">Generate link</a>
</span>
<span id="errors"></span>
<span>&nbsp;</span>
<div><a href="help.html" target="_blank">Documentation</a></div>
</div>
<div class="right" id="canvas-wrapper">
<canvas id="canvas" width="640" height="640" style="width: 640px; height: 640px;"></canvas>
</div>
{% endblock %}

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src/templates/projects/complex_grapher/main.js Normal file
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var shaderBase;
var dpi = 1;
const BASE_CTX = {
"*$2": "cmul",
"/$2": "cdiv",
"^$2": "cpow",
"root$2": "croot",
"root$2_o": "croot_o",
"recip$1": "crecip",
"re$1": "cre",
"im$1": "cim",
"abs$1": "cabs",
"arg$1": "carg",
"arg$1_i": "carg_o",
"norm$1": "cnorm",
"conj$1": "cconj",
"sqrt$1": "csqrt",
"sqrt$1_o": "csqrt_o",
"√$1": "csqrt",
"√$1_o": "csqrt_o",
"sinh$1": "csinh",
"cosh$1": "ccosh",
"tanh$1": "ctanh",
"asinh$1": "casinh",
"asinh$1_o": "casinh_o",
"acosh$1_o": "cacosh_o",
"sin$1": "csin",
"cos$1": "ccos",
"tan$1": "ctan",
"asin$1": "casin",
"acos$1": "cacos",
"atan$1": "catan",
"asin$1_o": "casin_o",
"acos$1_o": "cacos_o",
"exp$1": "cexp",
"log$1": "clog",
"log$2": "clogbase",
"log$1_o": "clog_o",
"log$2_o": "clogbase_o",
"ln$1": "clog",
"ln$1_o": "clog_o",
"gamma$1": "cgamma",
"Γ$1": "cgamma",
"unitcircle$1": "cunitcircle",
"signre$1": "csignre",
"signim$1": "csignim",
"lambertw$1": "clambertw",
// CONSTANTS
"e": "CONST_E",
"pi": "CONST_PI",
"π": "CONST_PI",
"tau": "CONST_TAU",
"τ": "CONST_TAU",
"emg": "CONST_EMGAMMA",
"γ": "CONST_EMGAMMA",
// NOT OFFICIALLY SUPPORTED YET
"digamma$1": "cdigamma",
"loggamma$1": "cloggamma",
"erf$1": "cerf",
"eulerfn$1": "ceulerfn",
"ti$1": "cti",
"weierp$3": "cweierp",
};
const FZ_CTX = {
...BASE_CTX,
"z": "z",
"c": "c",
"n": "n",
}
const INIT_CTX = {
...BASE_CTX,
"z": "z",
}
function expr2source(expr, ctx) {
let ast = peg$parse(expr);
console.log(ast);
const reduced = ast.reduce();
if(reduced !== null) {
ast = reduced;
}
return ast.gen(ctx);
}
function graph() {
const shadingRaw = document.getElementById("shading").value
try {
const options = {
rmin: parseFloat(document.getElementById("rmin").value),
rmax: parseFloat(document.getElementById("rmax").value),
imin: parseFloat(document.getElementById("imin").value),
imax: parseFloat(document.getElementById("imax").value),
drawcontours: document.getElementById("drawcontours").checked,
smoothcolor: document.getElementById("smoothcolor").checked,
shading: 15/(4-4*shadingRaw**4) - 15/4,
swapbw: document.getElementById("swapbw").checked,
iterations: parseInt(document.getElementById("iterations").value),
}
console.log(options);
console.log("=== PRINTING GENERATED GLSL ===");
const fz = document.getElementById("fz").value;
const fzSource = expr2source(fz, FZ_CTX);
console.log("fz: " + fzSource);
const initZ = document.getElementById("init_z").value;
const initZSource = expr2source(initZ, INIT_CTX);
console.log("z_init: " + initZSource);
const initC = document.getElementById("init_c").value;
const initCSource = expr2source(initC, INIT_CTX);
console.log("c_init: " + initCSource);
const fsSource = shaderBase
+ "vec2 f(vec2 z, vec2 c, vec2 n) { return "
+ fzSource
+ ";}"
+ "vec2 z_init(vec2 z) { return "
+ initZSource
+ ";}"
+ "vec2 c_init(vec2 z) { return "
+ initCSource
+ ";}";
runShader(fsSource, options);
} catch(e) {
document.getElementById("errors").textContent = e.toString();
console.log(e);
return;
}
document.getElementById("errors").textContent = "";
}
function decodeURLParams() {
const canvas = document.getElementById("canvas");
var params = new URLSearchParams(window.location.search);
if(!params.has("dpi") || params.get("dpi") == "1") {
dpi = 1;
canvas.width = 640;
canvas.height = 640;
} else if(params.get("dpi") == "2") {
dpi = 2;
canvas.width = 640*2;
canvas.height = 640*2;
} else if(params.get("dpi") == "4") {
dpi = 4;
canvas.width = 640*4;
canvas.height = 640*4;
}
if(params.has("src")) {
const src = JSON.parse(atob(params.get("src")));
document.getElementById("fz").value = src.expr;
document.getElementById("rmin").value = src.axes[0];
document.getElementById("rmax").value = src.axes[1];
document.getElementById("imin").value = src.axes[2];
document.getElementById("imax").value = src.axes[3];
document.getElementById("shading").value = src.shading;
document.getElementById("swapbw").checked = src.swapbw;
document.getElementById("drawcontours").checked = src.contours;
if(src.itermode !== false) {
document.getElementById("enable_iters").checked = true;
document.getElementById("iterations").value = src.itermode.iters;
document.getElementById("init_z").value = src.itermode.zinit;
document.getElementById("init_c").value = src.itermode.cinit;
} else {
document.getElementById("enable_iters").checked = false;
}
}
}
function encodeURLParams() {
const itermode = document.getElementById("enable_iters").checked;
let params = {
expr: document.getElementById("fz").value,
axes: [
document.getElementById("rmin").value,
document.getElementById("rmax").value,
document.getElementById("imin").value,
document.getElementById("imax").value,
],
shading: document.getElementById("shading").value,
swapbw: document.getElementById("swapbw").checked,
contours: document.getElementById("drawcontours").checked,
};
if(itermode) {
params.itermode = {
iters: document.getElementById("iterations").value,
zinit: document.getElementById("init_z").value,
cinit: document.getElementById("init_c").value,
}
} else {
params.itermode = false;
}
const src = btoa(JSON.stringify(params));
const url = window.location.origin + window.location.pathname + "?src=" + src + "&dpi=" + dpi;
document.location.href = url;
}
function changeIterationMode() {
const checked = document.getElementById('enable_iters').checked;
document.getElementById('iteration_mode').hidden = !checked;
if(!checked) {
document.getElementById('iterations').value = 1;
document.getElementById('init_z').value = "z";
document.getElementById('init_c').value = "0";
}
}
//const constantHtml = `<span class="constant">
//<input type="button" class="const-del" value="[-]" style="color: #ff4444" onclick="this.parentElement.remove()"/>
//<input type="text" class="const-label" style="width: 30px" /> =
//<input type="text" class="const-re" style="width: 80px" /> +
//<input type="text" class="const-im" style="width: 80px" /> i
//</span>`
//
//function addConstant() {
// const parse = Range.prototype.createContextualFragment.bind(document.createRange());
// const constWrapper = document.getElementById("constants-wrapper");
// constWrapper.appendChild(parse(constantHtml));
//}
window.onload = () => {
decodeURLParams();
fetch('shaderbase.glsl')
.then(response => response.text())
.then((data) => {
shaderBase = data;
graph();
});
changeIterationMode();
};

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#!/bin/bash
peggy -o pretty.js grammar.pegjs
#uglifyjs pretty.js > grammar.js
#rm pretty.js
mv pretty.js grammar.js

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src/templates/projects/complex_grapher/shaderbase.glsl Normal file
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#version 300 es
precision highp float;
#define MAX_ITERS 1000
#define TAU 6.283185307179586
#define TAU 6.283185307179586
#define CONST_E vec2(2.718281828459045,0.)
#define CONST_PI vec2(TAU*.5,0.)
#define CONST_TAU vec2(TAU,0.)
#define CONST_EMGAMMA vec2(0.5772156649015329,0.)
uniform highp vec2 uResolution;
uniform highp vec4 uRangeAxes;
uniform int uDrawContours;
uniform int uIterations;
uniform float uShadingIntensity;
uniform int uSwapBlackWhite;
uniform int uSmoothColor;
vec3 hsv2rgb(vec3 c) {
vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
}
vec2 map(vec2 value, vec2 inMin, vec2 inMax, vec2 outMin, vec2 outMax) {
return outMin + (outMax - outMin) * (value - inMin) / (inMax - inMin);
}
float valuemap(float r) {
return r*inversesqrt(r*r+0.0625*uShadingIntensity)*.975+.025;
}
float saturationmap(float r) {
float rr = 1./r;
return rr*inversesqrt(rr*rr+0.0625*uShadingIntensity)*.975+.025;
}
////////////////////////////////
// Complex function library //
////////////////////////////////
vec2 cre(vec2 z) {
return vec2(z.x,0.);
}
vec2 cim(vec2 z) {
return vec2(z.y,0.);
}
vec2 carg(vec2 z) {
float angle = TAU*.5 - mod(TAU*.5 - atan(z.y,z.x), TAU);
return vec2(angle, 0.);
}
vec2 carg_o(float off, vec2 z) {
float angle = TAU*.5 - mod(TAU*.5 - atan(z.y,z.x) - off, TAU) - off;
return vec2(angle, 0.);
}
vec2 cabs(vec2 z) {
return vec2(sqrt(z.x*z.x + z.y*z.y),0.);
}
vec2 cnorm(vec2 z) {
return vec2(z.x*z.x + z.y*z.y,0.);
}
vec2 cconj(vec2 z) {
return vec2(z.x, -z.y);
}
vec2 cmul(vec2 z1, vec2 z2) {
return vec2(z1.x*z2.x - z1.y*z2.y, z1.x*z2.y + z1.y*z2.x);
}
vec2 cdiv(vec2 z1, vec2 z2) {
return vec2(z1.x*z2.x + z1.y*z2.y, -z1.x*z2.y + z1.y*z2.x)/(z2.x*z2.x + z2.y*z2.y);
}
vec2 crecip(vec2 z) {
return vec2(z.x, -z.y)/(z.x*z.x + z.y*z.y);
}
vec2 csquare(vec2 z) {
return vec2(z.x*z.x - z.y*z.y, 2.*z.x*z.y);
}
vec2 cexp(vec2 z) {
return exp(z.x)*vec2(cos(z.y), sin(z.y));
}
vec2 clog(vec2 z) {
return vec2(log(cabs(z).x), carg(z).x);
}
vec2 clog_o(float off, vec2 z) {
return vec2(log(cabs(z).x), carg_o(off, z).x);
}
vec2 clogbase(vec2 z, vec2 base) {
return cdiv(clog(z),clog(base));
}
vec2 clogbase_o(float off, vec2 z, vec2 base) {
return cdiv(clog_o(off, z),clog_o(off, base));
}
vec2 cpow(vec2 z1, vec2 z2) {
return cexp(cmul(z2, clog(z1)));
}
vec2 croot(vec2 z1, vec2 z2) {
return cexp(cmul(crecip(z2), clog(z1)));
}
vec2 csqrt(vec2 z) {
return cexp(0.5*clog(z));
}
vec2 csqrt_o(float off, vec2 z) {
return cexp(0.5*clog_o(off, z));
}
vec2 csin(vec2 z) {
vec2 e1 = cexp(vec2( z.y,-z.x));
vec2 e2 = cexp(vec2(-z.y, z.x));
vec2 w = .5*(e1-e2);
return vec2(-w.y,w.x);
}
vec2 ccos(vec2 z) {
vec2 e1 = cexp(vec2( z.y,-z.x));
vec2 e2 = cexp(vec2(-z.y, z.x));
return .5*(e1 + e2);
}
vec2 ctan(vec2 z) {
vec2 e1 = cexp(vec2( z.y,-z.x));
vec2 e2 = cexp(vec2(-z.y, z.x));
vec2 w = cdiv(e1 - e2, e1 + e2);
return vec2(-w.y,w.x);
}
vec2 csinh(vec2 z) {
vec2 e1 = cexp(z);
vec2 e2 = cexp(-z);
return .5*(e1 - e2);
}
vec2 ccosh(vec2 z) {
vec2 e1 = cexp(z);
vec2 e2 = cexp(-z);
return .5*(e1 + e2);
}
vec2 ctanh(vec2 z) {
vec2 e1 = cexp(z);
vec2 e2 = cexp(-z);
return cdiv(e1 - e2, e1 + e2);
}
vec2 casin(vec2 z) {
vec2 v = clog( csqrt(vec2(1.,0.)-csquare(z)) + vec2(-z.y,z.x) );
return vec2(v.y,-v.x);
}
vec2 cacos(vec2 z) {
vec2 v = clog( csqrt(vec2(1.,0.)-csquare(z)) + vec2(-z.y,z.x) );
return CONST_TAU*.25 + vec2(-v.y,v.x);
}
vec2 catan(vec2 z) {
vec2 v = clog(cdiv(vec2(1.,0.) - vec2(-z.y,z.x), vec2(1.,0.) + vec2(-z.y,z.x)));
return .5*vec2(-v.y,v.x);
}
vec2 casin_o(float off, vec2 z) {
vec2 v = clog(csqrt_o(off, vec2(1.,0.)-csquare(z)) + vec2(-z.y,z.x) );
return vec2(v.y,-v.x);
}
vec2 cacos_o(float off, vec2 z) {
vec2 v = clog(csqrt_o(off, vec2(1.,0.)-csquare(z)) + vec2(-z.y,z.x) );
return CONST_TAU*.25 + vec2(-v.y,v.x);
}
vec2 casinh(vec2 z) {
return clog(csqrt(vec2(1.,0.)+csquare(z)) + z);
}
vec2 cacosh(vec2 z) {
return clog(csqrt(csquare(z)-vec2(1.,0.)) + z);
}
vec2 catanh(vec2 z) {
return 0.5*clog(cdiv(vec2(1.,0.)+z, vec2(1.,0.)-z));
}
vec2 casinh_o(float off, vec2 z) {
return clog(csqrt_o(off, vec2(1.,0.)+csquare(z)) + z);
}
vec2 cacosh_o(float off, vec2 z) {
return clog(csqrt_o(off, csquare(z)-vec2(1.,0.)) + z);
}
// values for gamma function
const float gammaP0 = 676.5203681218851;
const float gammaP1 = -1259.1392167224028;
const float gammaP2 = 771.32342877765313;
const float gammaP3 = -176.61502916214059;
const float gammaP4 = 12.507343278686905;
const float gammaP5 = -0.13857109526572012;
const float gammaP6 = 9.9843695780195716e-6;
const float gammaP7 = 1.5056327351493116e-7;
vec2 gamma_inner(vec2 z) {
z -= vec2(1.,0.);
vec2 x = vec2(0.99999999999980993,0.);
x += cdiv(vec2(gammaP0,0.), z + vec2(1.,0.));
x += cdiv(vec2(gammaP1,0.), z + vec2(2.,0.));
x += cdiv(vec2(gammaP2,0.), z + vec2(3.,0.));
x += cdiv(vec2(gammaP3,0.), z + vec2(4.,0.));
x += cdiv(vec2(gammaP4,0.), z + vec2(5.,0.));
x += cdiv(vec2(gammaP5,0.), z + vec2(6.,0.));
x += cdiv(vec2(gammaP6,0.), z + vec2(7.,0.));
x += cdiv(vec2(gammaP7,0.), z + vec2(8.,0.));
vec2 t = z + vec2(7.5,0.);
return cmul(
sqrt(TAU) * cpow(t, z + vec2(0.5,0.)),
cmul(cexp(-t), x)
);
}
vec2 cgamma(vec2 z) {
if(z.x < 0.5) {
return cdiv(CONST_TAU*.5, cmul(csin(cmul(CONST_TAU*.5, z)), gamma_inner(vec2(1.,0.) - z)));
} else {
return gamma_inner(z);
}
}
vec2 cdigamma_pos(vec2 z) {
z -= vec2(.5,0);
float denom = dot(z, z);
vec2 iz = vec2(1.,-1.) * z / denom;
vec2 iz3 = vec2(z.x*z.x*z.x - 3.*z.x*z.y*z.y, z.y*z.y*z.y - 3.*z.y*z.x*z.x) / (denom*denom*denom);
return clog(z + 0.041666666666666664*iz + 0.006423611111111111*iz3);
}
vec2 cdigamma(vec2 z) {
if(z.x > 10. || abs(z.y) > 10.) {
return cdigamma_pos(z);
} else if(z.x > -20.) {
vec2 res = cdigamma_pos(z + vec2(1000.,0.));
for(int i = 0; i < 1001; i++) {
vec2 denom = vec2(i,0) + z;
res -= vec2(1,-1) * denom / dot(denom, denom);
}
return res;
} else {
return cdigamma_pos(vec2(1.,0.) - z) - cdiv(CONST_TAU*.5, ctan(TAU*.5 * z));
}
}
#define ERF_P 0.3275911
#define ERF_A1 0.254829592
#define ERF_A2 -0.284496736
#define ERF_A3 1.421413741
#define ERF_A4 -1.453152027
#define ERF_A5 1.061405429
float erf_gt0(float x) {
float denom = 1. + ERF_P*x;
float denom2 = denom*denom;
return 1. - (ERF_A1/denom + ERF_A2/denom2 + ERF_A3/(denom*denom2) + ERF_A4/(denom2*denom2) + ERF_A5/(denom2*denom2*denom))*exp(-x*x);
}
float erf(float x) {
if(x >= 0.) {
return erf_gt0(x);
} else {
return -erf_gt0(-x);
}
}
#define CERF_A 0.5
#define CERF_ITERS 20
vec2 cerf_near_re(vec2 z) {
float x = z.x;
float y = z.y;
float x2 = x*x;
float exp_neg_x2 = exp(-x2);
vec2 summation = vec2(0);
for(int i = 1; i < CERF_ITERS; i++) {
float n = float(i);
float a2n2 = CERF_A*CERF_A*n*n;
float mult = exp(-a2n2)/(4.*a2n2 + 4.*x2);
float cosh_2any = cosh(2.*CERF_A*n*y);
float sinh_2any = sinh(2.*CERF_A*n*y);
float cos_2xy = cos(2.*x*y);
float sin_2xy = sin(2.*x*y);
summation += mult*vec2(
x - x*cosh_2any*cos_2xy + CERF_A*n*sinh_2any*sin_2xy,
x*cosh_2any*sin_2xy + CERF_A*n*sinh_2any*cos_2xy
);
if(abs(y) > 8. && i > 7) {
break;
} else if(abs(y) > 4. && i > 9) {
break;
}
}
summation *= 16.*CERF_A*exp_neg_x2/TAU;
float coeff = CERF_A*exp_neg_x2/(TAU*.5*x);
summation += vec2(erf(x) + coeff*(1. - cos(2.*x*y)), coeff*sin(2.*x*y));
return summation;
}
#define CERF_TERMS 250
#define RECIP_SQRT_PI 0.5641895835477563
vec2 cerf_near_im(vec2 z) {
vec2 z2 = csquare(z);
vec2 coeff = 2. * RECIP_SQRT_PI * cmul(z, cexp(-z2));
vec2 term = vec2(float(CERF_TERMS*2 + 1), 0);
for(int i = 0; i < CERF_TERMS; i++) {
int j = CERF_TERMS - i;
if(j < 1) {
break;
}
if((j / 2) * 2 == j) {
term = vec2(float(2*j - 1), 0.) + cdiv(float(2*j)*z2, term);
} else {
term = vec2(float(2*j - 1), 0.) - cdiv(float(2*j)*z2, term);
}
}
return cdiv(coeff, term);
}
vec2 cerf(vec2 z) {
if(z.y == 0.) {
return vec2(erf(z.x), 0);
} else if(abs(z.x) < abs(z.y)) {
return cerf_near_im(z);
} else {
return cerf_near_re(z);
}
}
vec2 ceulerfn(vec2 z) {
if(cabs(z).x > 1.) {
return z*0./0.;
}
vec2 res = vec2(1,0);
vec2 w = z;
for(int i = 0; i < 600; i++) {
res = cmul(res, vec2(1,0) - w);
w = cmul(w, z);
}
return res;
}
vec2 csignre(vec2 z) {
return vec2(sign(z.x), 0);
}
vec2 csignim(vec2 z) {
return vec2(sign(z.y), 0);
}
vec2 cunitcircle(vec2 z) {
return z/cabs(z).x;
}
#define LAMBERT_W_ITERS 30
vec2 clambertw(vec2 z) {
vec2 res;
if(z.x < -0.3678795) {
if(z.y == 0.) {
res = vec2(z.x, 1.);
} else {
res = vec2(z.x, z.y + 0.4*sign(z.y));
}
} else {
res = z;
}
res = clog(res + vec2(1,0));
for(int i = 0; i < LAMBERT_W_ITERS; i++) {
res = cdiv(csquare(res) + cmul(z, cexp(-res)), res + vec2(1,0));
}
return res;
}
// https://www.desmos.com/calculator/eh9vx5dil4
const float ti0 = 0.927295218002;
const float ti1 = -0.254590436003;
const float ti2 = -0.130819127994;
const float ti3 = 0.176304922654;
const float ti4 = -0.0454098453075;
const float ti5 = -0.0648283093849;
const float ti6 = 0.0695819521032;
const float ti7 = -0.00902813277778;
const float ti8 = -0.036994;
const float ti9 = 0.0321614;
const float ti10 = 0.00102442;
const float ti11 = -0.0221968;
const float ti12 = 0.0156038;
const float ti13 = 0.00369106;
const float ti14 = -0.0135653;
const float tiOffset = -0.487222405586;
vec2 cti_inner(vec2 z) {
z -= vec2(0.5,0);
vec2 z2 = cmul(z,z);
vec2 z3 = cmul(z2,z);
vec2 z4 = cmul(z2,z2);
vec2 z5 = cmul(z4,z);
vec2 z6 = cmul(z4,z2);
vec2 z7 = cmul(z4,z3);
vec2 z8 = cmul(z4,z4);
return ti0*z
+ ti1/2.*z2
+ ti2/3.*z3
+ ti3/4.*z4
+ ti4/5.*z5
+ ti5/6.*z6
+ ti6/7.*z7
+ ti7/8.*z8
+ ti8/9.*cmul(z8,z)
+ ti9/10.*cmul(z8,z2)
+ ti10/11.*cmul(z8,z3)
+ ti11/12.*cmul(z8,z4)
+ ti12/13.*cmul(z8,z5)
+ ti13/14.*cmul(z8,z6)
+ ti14/15.*cmul(z8,z7)
- vec2(tiOffset,0);
}
vec2 cti(vec2 z) {
float m = 1.;
if(z.x < 0.) {
m = -1.;
}
if(cnorm(z).x <= 1.) {
return m*cti_inner(m*z);
} else {
return m*(TAU*.25*clog(vec2(abs(z.x), z.y*m)) + cti_inner(m*crecip(z)));
}
}
// Weierstrass P function (℘)
vec2 cweierp(vec2 z, vec2 w1, vec2 w2) {
vec2 sum = cpow(z, vec2(-2,0));
for(int i = -25; i <= 25; i++) {
for(int j = -25; j <= 25; j++) {
if(i == 0 && j == 0) { continue; }
vec2 lambda = float(i)*w1 + float(j)*w2;
sum += cpow(z - lambda, vec2(-2,0)) - cpow(lambda, vec2(-2,0));
}
}
return sum/2.;
}
////////////////////
// Drawing code //
////////////////////
// will be implemented by the input expression
vec2 f(vec2 z, vec2 c, vec2 n);
vec2 z_init(vec2 z);
vec2 c_init(vec2 z);
out vec4 fragColor;
void main() {
float axis_size = 1./uResolution.x;
vec2 pt = map(
gl_FragCoord.xy,
vec2(0.), uResolution.xy,
uRangeAxes.xz, uRangeAxes.yw
);
vec2 z = z_init(pt);
vec2 c = c_init(pt);
for(int i = 0; i < MAX_ITERS; i++) {
if(i >= uIterations) {
break;
}
z = f(z, c, vec2(float(i),0.));
}
float rad = cabs(z).x;
if(rad == 0.) {
fragColor = vec4(vec3(uSwapBlackWhite),1.);
return;
} else if(isinf(rad)) {
fragColor = vec4(vec3(1-uSwapBlackWhite),1.);
return;
} else if(isnan(rad)) {
fragColor = vec4(.5,.5,.5,1.);
return;
}
float arg = carg(z).x;
float s = uSwapBlackWhite == 0 ? saturationmap(rad) : valuemap(rad);
float v = uSwapBlackWhite == 0 ? valuemap(rad) : saturationmap(rad);
if(uDrawContours == 1) {
if(abs(rad-1.) < 0.1) {
s *= 0.5;
v = clamp(v*1.5, 0., 1.);
} else if(rad > 0.1 && abs(fract(rad+0.5)-0.5) < 0.1) {
v *= 0.7;
}
}
vec3 col;
if(uSmoothColor == 1) {
float r = cos(arg)*.5 + .5;
float g = cos(arg - TAU/3.)*.5 + .5;
float b = cos(arg - 2.*TAU/3.)*.5 + .5;
vec3 hue = vec3(r,g,b);
col = hue*(1. - (1.-s) - (1.-v)) + (1.-s);
} else {
col = hsv2rgb(vec3(arg/TAU, s, v));
}
fragColor = vec4(col,1.);
}

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const vsSource = `#version 300 es
in vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
function runShader(fsSource, options) {
const canvas = document.querySelector('#canvas');
const gl = canvas.getContext('webgl2', {preserveDrawingBuffer:true});
if (!gl) {
alert('could not initialize webgl.');
return;
}
const shaderProgram = initShaderProgram(gl, vsSource, fsSource);
gl.useProgram(shaderProgram);
const vertexPosition = gl.getAttribLocation(shaderProgram, 'aVertexPosition');
uResolution = gl.getUniformLocation(shaderProgram, "uResolution");
uRangeAxes = gl.getUniformLocation(shaderProgram, "uRangeAxes");
uDrawContours = gl.getUniformLocation(shaderProgram, "uDrawContours");
uShadingIntensity = gl.getUniformLocation(shaderProgram, "uShadingIntensity");
uSwapBlackWhite = gl.getUniformLocation(shaderProgram, "uSwapBlackWhite");
uIterations = gl.getUniformLocation(shaderProgram, "uIterations");
uSmoothColor = gl.getUniformLocation(shaderProgram, "uSmoothColor");
gl.uniform2f(uResolution, gl.canvas.width, gl.canvas.height);
gl.uniform4f(uRangeAxes, options.rmin, options.rmax, options.imin, options.imax);
gl.uniform1i(uDrawContours, options.drawcontours ? 1 : 0);
gl.uniform1f(uShadingIntensity, options.shading);
gl.uniform1i(uSwapBlackWhite, options.swapbw) ? 1 : 0;
gl.uniform1i(uIterations, options.iterations);
gl.uniform1i(uSmoothColor, options.smoothcolor);
const buffers = initBuffers(gl);
drawScene(gl, vertexPosition, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
1.0, 1.0,
-1.0, 1.0,
1.0, -1.0,
-1.0, -1.0,
];
gl.bufferData(gl.ARRAY_BUFFER,
new Float32Array(positions),
gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, vertexPosition, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clearDepth(1.0);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
const projectionMatrix = mat4.create();
const modelViewMatrix = mat4.create();
const numComponents = 2;
const type = gl.FLOAT;
const normalize = false;
const stride = 0;
const offset = 0;
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
vertexPosition,
numComponents,
type,
normalize,
stride,
offset);
gl.enableVertexAttribArray(vertexPosition);
const vertexOffset = 0;
const vertexCount = 4;
gl.drawArrays(gl.TRIANGLE_STRIP, vertexOffset, vertexCount);
}
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
throw Error('could not initialize shader program: ' + gl.getProgramInfoLog(shaderProgram));
}
gl.deleteShader(vertexShader);
gl.deleteShader(fragmentShader);
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
const text = 'could not compile shaders: ' + gl.getShaderInfoLog(shader);
gl.deleteShader(shader);
throw Error(text);
}
return shader;
}

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{% set meta={"title": "Unit Converter", "desc": "Convert between units, both ordinary and esoteric"} %}
{% extends "/_base.html" %}
{% block head %}
<script src="main.js"></script>
<script src="measures.js"></script>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"
integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
crossorigin="anonymous"></script>
{% endblock %}
{% block content %}
<p>Convert between many different units and scales of length, temparture, mass, and area</p>
<select id="measure" onchange="measureUpdate();">
<option value="length" selected>Length</option>
<option value="temp">Temperature</option>
<option value="mass">Mass</option>
<option value="area">Area</option>
<option value="time">Time</option>
<option value="volume">Volume</option>
<option value="energy">Energy</option>
<option value="computing">Computing</option>
</select><br><br>
<input id="val1" type="text" onchange="recalc();" value="1">
<select id="unit1" onchange="recalc();"></select>
<span class="big"> = </span>
<input id="val2" type="text" onchange="recalc();">
<select id="unit2" onchange="recalc();"></select>
<input type="button" value="Switch" onclick="swap();"><br>
<p>Results may be rounded or have noise in the last decimal digits.
If a result ends with a sequence of '9's, you should round up.
If it ends with '0's, you should ignore them. When converting from very
small units to very large ones, the result may be zero.</p>
</table>
{% endblock %}

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Number.prototype.decimals = function() {
if(Math.floor(this.valueOf()) === this.valueOf()) return 0;
return (this.toString().split(".")[1] || '').length;
}
Math.trueRound = function(number, precision) {
var shift = function (number, precision, reverseShift) {
if (reverseShift) {
precision = -precision;
}
var numArray = ("" + number).split("e");
return +(numArray[0] + "e" + (numArray[1] ? (+numArray[1] + precision) : precision));
};
return shift(Math.round(shift(number, precision, false)), precision, true);
}
window.onload = function() {
measureUpdate();
}
function measureUpdate() {
let units = length.units;
let select = length.select;
switch($('#measure').val()) {
case 'length': units = length.units; select = length.select; break;
case 'temp': units = temp.units; select = temp.select; break;
case 'mass': units = mass.units; select = mass.select; break;
case 'area': units = area.units; select = area.select; break;
case 'time': units = time.units; select = time.select; break;
case 'volume': units = volume.units; select = volume.select; break;
case 'energy': units = energy.units; select = energy.select; break;
case 'computing': units = computing.units; select = computing.select; break;
}
updateUnits(units, select);
recalc();
}
function updateUnits(units, select) {
$('#unit1').empty();
$('#unit2').empty();
s1 = units.indexOf(select[0]);
s2 = units.indexOf(select[1]);
for(let i = 0; i < units.length; i++) {
let elem = $('<option></option>').val(units[i]).text(units[i]);
if(i == s1) elem = elem.attr('selected', true);
$('#unit1').append(elem);
}
for(let i = 0; i < units.length; i++) {
let elem = $('<option></option>').val(units[i]).text(units[i]);
if(i == s2) elem = elem.attr('selected', true);
$('#unit2').append(elem);
}
}
function recalc() {
let m = length;
switch($('#measure').val()) {
case 'length': m = length; break;
case 'temp': m = temp; break;
case 'mass': m = mass; break;
case 'area': m = area; break;
case 'time': m = time; break;
case 'volume': m = volume; break;
case 'energy': m = energy; break;
case 'computing': m = computing; break;
}
let value = $('#val1').val();
let result = 0;
if(m.ctype == 'mul') {
// Simple multiplication
let u1 = $('#unit1').val(), u2 = $('#unit2').val();
let done = false;
// Check custom conversions
for(let i = 0; i < m.custom.length; i++) {
let c = m.custom[i];
if(c[0] == u1 && c[1] == u2) {
result = Math.trueRound(value*c[2], 12);
done = true;
} else if(c[0] == u2 && c[1] == u1) {
result = Math.trueRound(value/c[2], 12);
done = true;
}
}
if(!done) {
// Convert
let indexFrom = m.units.indexOf(u1), indexTo = m.units.indexOf(u2);
let fc = m.conversions[indexFrom], tc = m.conversions[indexTo];
newv = value*fc/tc;
result = Math.trueRound(newv, 12);
}
} else if(m.ctype == 'funct') {
// Function (for temp)
newv = m.conversions[':'+$('#unit2').val()](m.conversions[$('#unit1').val()+':'](value))
result = Math.trueRound(newv, 8);
}
$('#val2').val(result);
}
function swap() {
let u1 = $('#unit1').val();
let u2 = $('#unit2').val();
let v1 = $('#val1').val();
let v2 = $('#val2').val();
$('#unit1').val(u2);
$('#unit2').val(u1);
$('#val1').val(v2);
$('#val2').val(v1);
}

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let length = {
units: ['Picometer', 'Nanometer', 'Micrometer', 'Millimeter', 'Centimeter',
'Decimeter', 'Meter', 'Decameter', 'Hectometer', 'Kilometer', 'Megameter',
'Gigameter', 'Barleycorn', 'Thou', 'Digit', 'Inch', 'Palm', 'Stick', 'Hand',
'Link', 'Foot', 'Yard', 'Rod', 'Fathom', 'Chain', 'Shackle', 'Cable', 'Furlong',
'Mile', 'Nautical Mile', 'League', 'AU', 'Light-Year', 'Smoot'],
common: 'Meter',
ctype: 'mul',
select: ['Meter', 'Foot'],
conversions: [1e-12, 1e-9, 1e-6, 0.001, 0.01,
0.1, 1, 10, 100, 1000, 1e+6,
1e+9, 127/15000, 0.0000254, 0.01905, 0.0254, 0.0508, 0.0762, 0.1016,
0.201168, 0.3048, 0.9144, 5.0292, 1.852, 20.1168, 27.432, 185.2, 201.168,
1609.344, 1852, 4828.032, 149597870700, 9460730472580800, 1.7],
custom: [['Foot', 'Inch', 12], ['Yard', 'Foot', 3], ['Mile', 'Foot', 5280],
['Inch', 'Centimeter', 2.54], ['Mile', 'Kilometer', 1.609344]]
};
let temp = {
units: ['Celcius', 'Fahrenheit', 'Kelvin', 'Rankine', 'Delisle'],
common: 'Celcius',
ctype: 'funct',
select: ['Celcius', 'Fahrenheit'],
conversions: {
'Celcius:': (n)=>{return n;},
':Celcius': (n)=>{return n;},
'Fahrenheit:': (n)=>{return (n-32)*(5/9);},
':Fahrenheit': (n)=>{return (n*9/5) + 32;},
'Kelvin:': (n)=>{return n - 273.15;},
':Kelvin': (n)=>{return n + 273.15;},
'Rankine:': (n)=>{return (n-491.67)*(5/9);},
':Rankine': (n)=>{return (n*9/5)+491.67;},
'Delisle:': (n)=>{return 100-(n*2/3);},
':Delisle': (n)=>{return (100-n)*3/2;},
},
custom: []
};
let mass = {
units: ['Picogram', 'Nanogram', 'Microgram', 'Milligram', 'Centigram', 'Decigram',
'Gram', 'Decagram', 'Hectogram', 'Kilogram', 'Metric tonne', 'Ounce', 'Pound', 'Slug', 'Stone', 'US ton', 'Solar mass', 'Earth mass'],
common: 'Kilogram',
ctype: 'mul',
select: ['Kilogram', 'Pound'],
conversions: [1e-15, 1e-12, 1e-9, 1e-6, 1e-5, 1e-4,
0.001, 0.01, 0.1, 1, 1000, 0.028349523125, 0.45359237,
14.593903, 6.35029318, 907.18474, 1.98855e+30, 5.9722e+24],
custom: [['US Ton', 'Pound', 2000], ['Pound', 'Ounce', 16]]
};
let area = {
units: ['Square millimeter', 'Square centimeter', 'Square meter', 'Hectare',
'Square kilometer', 'Square inch', 'Square foot', 'Square yard', 'Square mile',
'Acre'],
common: 'Square meter',
ctype: 'mul',
select: ['Square kilometer', 'Square mile'],
conversions: [1e-12, 1e-10, 1e-6, 0.01, 1, 6.4516e-10, 9.290304e-8, 8.3612736e-7,
2.589988110336, 0.0040468564224],
custom: []
};
let time = {
units: ['Microsecond', 'Millisecond', 'Second', 'Minute', 'Hour', 'Day', 'Week',
'Fortnight', 'Siderial month', 'Lunar month', '30 Days', 'Month', 'Quarter',
'Common year', 'Julian year', 'Year', 'Sidereal year', 'Leap Year', 'Decade',
'Average human life', 'Century', 'Millenium'],
common: 'Day',
ctype: 'mul',
select: ['Year', 'Second'],
conversions: [1/86400000000, 1/86400000, 1/86400, 1/1440, 1/24, 1, 7,
14, 27.321661, 29.530588, 30, 30.4166666667, 91.25,
365, 365.25, 365.2425, 365.256363004, 366, 3652.425,
25749.59625, 36524.25, 365242.5],
custom: []
};
let volume = {
units: ['Microliter', 'Milliliter', 'Centiliter', 'Deciliter', 'Liter',
'Decaliter', 'Hectoliter', 'Kiloliter', 'Cubic inch', 'Cubic foot', 'Cubic yard', 'Minim', 'Fluid dram', 'Teaspoon', 'Tablespoon', 'Fluid ounce', 'Shot', 'Cup', 'Pint', 'Quart', 'Gallon', 'Barrel', 'Hogshead', 'Cord'],
common: 'Milliliter',
ctype: 'mul',
select: ['Liter', 'Cup'],
conversions: [0.001, 1, 10, 100, 1000, 10000, 100000, 1000000, 16.387064, 28316.8,
764555, 0.061611519921875, 3.6966911953125, 4.92892159375, 14.78676478125, 29.5735295625, 30, 44.36029434375, 236.5882365, 473.176473, 946.352946, 3785.411784,119240.471196, 238480.942392, 3624556.3648],
custom: [['Cubic foot', 'Cubic inch', 1728], ['Cubic yard', 'Cubic foot', 27], ['Tablespoon', 'Teaspoon', 3], ['Fluid ounce', 'Cubic inch', 1.8046875], ['Cup', 'Tablespoon', 16], ['Cup', 'Teaspoon', 48]]
};
let energy = {
units: ['Microjoule', 'Millijoule', 'Joule', 'Kilojoule', 'Megajoule', 'Gigajoule', 'Terajoule', 'Exajoule', 'Microwatt-hour', 'Milliwatt-hour', 'Watt-hour', 'Kilowatt-hour', 'Megawatt-hour', 'Gigawatt-hour', 'Terawatt-hour', 'Calorie', 'Kilocalorie', 'Foot-pound'],
common: 'Joule',
ctype: 'mul',
select: ['Kilowatt-hour', 'Joule'],
conversions: [1e-6, 0.001, 1, 1000, 1e6, 1e9, 1e12, 1e15, 0.0036, 3.6, 3600, 3.6e6, 3.6e9, 3.6e12, 3.6e15, 4.184, 4184, 1.35582],
custom: []
}
let computing = {
units: ['Bit', 'Kibibit', 'Kilobit', 'Mebibit', 'Megabit', 'Gibibit', 'Gigabit', 'Tebibit', 'Terabit', 'Pebibit', 'Petabit', 'Ebibit', 'Exabit', 'Zebibit', 'Zettabit', 'Yobibit', 'Yottabit', 'Nibble', 'Byte', 'Kibibyte', 'Kilobyte', 'Mebibyte', 'Megabyte', 'Gibibyte', 'Gigabyte', 'Tebibyte', 'Terabyte', 'Pebibyte', 'Petabyte', 'Ebibyte', 'Exabyte', 'Zebibyte', 'Zettabyte','Yobibyte', 'Yottabyte'],
common: 'Byte',
ctype: 'mul',
select: ['Gigabyte', 'Megabyte'],
conversions: [1/8, 2**7, 10**3/8, 2**17, 10**6/8, 2**27, 10**9/8, 2**37, 10**12/8, 2**47, 10**15/8, 2**57, 10**18/8, 2**67, 10**21/8, 2**77, 10**24/8, 1/2, 1, 2**10, 10**3, 2**20, 10**6, 2**30, 10**9, 2**40, 10**12, 2**50, 10**15, 2**60, 10**18, 2**70, 10*21, 2**80, 10**24],
custom: []
}

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function loadCookie() {
let cookie = Cookies.getJSON('savedata');
// If no cookie exists, don't try to load one
if(cookie != undefined) {
// Get found elements from cookie
let elems = cookie['list'];
if(elems != undefined) {
console.log('Loading');
// Set found elements to cookie
found = elems;
}
numHints = cookie['hints'];
if(numHints == undefined) numHints = 1;
foundUpdated(true);
savedTime = cookie['time'];
if(savedTime == undefined) savedTime = 0;
if(savedTime > 0) nextHint = savedTime + 60000;
foundUpdated(true);
}
}
function saveCookie() {
console.log('Saving');
// Set the cookie
Cookies.set('savedata', {
'list':found,
'hints':numHints,
'time':realMillis()
}, {expires: 30, path: ''});
}

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// Classes and their color
let classes = [
['null', 0, 0, 0 ],
['water', 5, 30, 140],
['earth', 145, 90, 30 ],
['fire', 160, 20, 5 ],
['air', 60, 130, 200],
['stone', 70, 70, 70 ],
['energy', 240, 200, 20 ],
['life', 80, 165, 40 ],
['animal', 195, 65, 45 ],
['human', 240, 100, 10 ],
['death', 60, 90, 15 ],
['space', 20, 20, 30 ],
['wood', 70, 40, 0 ],
['food', 110, 50, 130],
['tools', 210, 200, 200],
['computer',160, 160, 170]
]
// Elements and their class
let elements = [
['Water', 'water'],
['Earth', 'earth'],
['Fire', 'fire'],
['Air', 'air'],
['Mud', 'earth'],
['Lava', 'fire'],
['Stone', 'stone'],
['Cloud', 'air'],
['Smoke', 'air'],
['Steam', 'air'],
['Sand', 'stone'],
['Rain', 'water'],
['Ocean', 'water'],
['Salt', 'stone'],
['Energy', 'energy'],
['Earthquake', 'earth'],
['Swamp', 'earth'],
['Life', 'life'],
['Algae', 'life'],
['Bird', 'animal'],
['Plant', 'life'],
['Mammal', 'animal'],
['Tree', 'life'],
['Glass', 'stone'],
['Brick', 'stone'],
['Monkey', 'animal'],
['Egg', 'life'],
['Phoenix', 'fire'],
['Human', 'human'],
['Love', 'human'],
['Clay', 'earth'],
['Wall', 'stone'],
['Family', 'human'],
['House', 'human'],
['Town', 'human'],
['City', 'human'],
['Metal', 'stone'],
['Electricity', 'energy'],
['Dust', 'earth'],
['Lightning', 'energy'],
['Atmosphere', 'air'],
['Planet', 'space'],
['Star', 'space'],
['Ash', 'stone'],
['Mountain', 'earth'],
['Volcano', 'fire'],
['Stick', 'wood'],
['Axe', 'tools'],
['Wood', 'wood'],
['Campfire', 'fire'],
['Wind', 'air'],
['Cold', 'air'],
['Seeds', 'life'],
['Grass', 'life'],
['Penguin', 'animal'],
['Ostrich', 'animal'],
['Chicken', 'animal'],
['Roast Chicken', 'food'],
['Pig', 'animal'],
['Bacon', 'food'],
['Ham', 'food'],
['Cow', 'animal'],
['Steak', 'food'],
['Wheat', 'life'],
['Flour', 'food'],
['Dough', 'food'],
['Bread', 'food'],
['Toast', 'food'],
['Blade', 'tools'],
['Knife', 'tools'],
['Shavings', 'wood'],
['Wood Pulp', 'wood'],
['Paper', 'tools'],
['Ice', 'water'],
['Snow', 'water'],
['Fish', 'animal'],
['Whale', 'animal'],
['Sheep', 'animal'],
['Worker', 'human'],
['Blacksmith', 'human'],
['Shepherd', 'human'],
['Farmer', 'human'],
['Wire', 'computer'],
['Robot', 'computer'],
['Computer', 'computer'],
['Network', 'computer'],
['Internet', 'computer'],
['Pet', 'animal'],
['Cat', 'animal'],
['Dog', 'animal'],
['Meme', 'computer'],
['Corpse', 'death'],
['Bone', 'death'],
['Zombie', 'death'],
['Alien', 'death'],
['Rainbow', 'air'],
['Unicorn', 'animal'],
['Bonfire', 'fire'],
['Storm', 'air'],
['Hurricane', 'air'],
['Tornado', 'air'],
['Potato', 'food'],
['Fruit', 'life'],
['Apple', 'food'],
['Watermelon', 'food'],
['Eggplant', 'food'],
['Crab', 'animal'],
['Milk', 'food'],
['Butter', 'food'],
['Forest', 'life'],
['Jungle', 'life'],
['Banana', 'food'],
['Skyscraper', 'human'],
['Goldfish', 'animal'],
['Wheel', 'wood'],
['Car', 'computer'],
['Book', 'tools'],
['Children', 'human'],
['School', 'human']
]
// Recipes: two inputs and some outputs
let recipes = [
['Water', 'Earth', ['Mud']],
['Fire', 'Earth', ['Lava']],
['Lava', 'Water', ['Stone']],
['Air', 'Water', ['Cloud']],
['Air', 'Fire', ['Smoke']],
['Stone', 'Water', ['Sand']],
['Water', 'Cloud', ['Rain']],
['Water', 'Water', ['Ocean']],
['Ocean', 'Fire', ['Salt']],
['Water', 'Fire', ['Steam', 'Energy']],
['Energy', 'Earth', ['Earthquake']],
['Mud', 'Water', ['Swamp']],
['Swamp', 'Energy', ['Life']],
['Life', 'Water', ['Algae']],
['Life', 'Air', ['Bird']],
['Algae', 'Earth', ['Plant']],
['Life', 'Earth', ['Mammal']],
['Plant', 'Air', ['Tree']],
['Sand', 'Fire', ['Glass']],
['Clay', 'Fire', ['Brick']],
['Tree', 'Mammal', ['Monkey']],
['Monkey', 'Fire', ['Human']],
['Bird', 'Stone', ['Egg']],
['Bird', 'Fire', ['Phoenix']],
['Monkey', 'Fire', ['Human']],
['Human', 'Human', ['Love']],
['Mud', 'Swamp', ['Clay']],
['Brick', 'Brick', ['Wall']],
['Human', 'Love', ['Family']],
['Wall', 'Family', ['House']],
['House', 'House', ['Town']],
['Town', 'Town', ['City']],
['Fire', 'Stone', ['Metal']],
['Metal', 'Energy', ['Electricity']],
['Air', 'Earth', ['Dust']],
['Fire', 'Air', ['Smoke']],
['Energy', 'Air', ['Lightning']],
['Air', 'Air', ['Atmosphere']],
['Atmosphere', 'Earth', ['Planet']],
['Planet', 'Fire', ['Star']],
['Tree', 'Fire', ['Ash']],
['Plant', 'Fire', ['Ash']],
['Earth', 'Earth', ['Mountain']],
['Lava', 'Mountain', ['Volcano']],
['Tree', 'Stone', ['Stick']],
['Stick', 'Stone', ['Axe']],
['Tree', 'Axe', ['Wood']],
['Wood', 'Fire', ['Campfire', 'Smoke']],
['Air', 'Atmosphere', ['Wind']],
['Wind', 'Water', ['Cold']],
['Life', 'Sand', ['Seeds']],
['Seeds', 'Earth', ['Grass']],
['Bird', 'Cold', ['Penguin']],
['Bird', 'Sand', ['Ostrich']],
['Earth', 'Bird', ['Chicken']],
['Fire', 'Chicken',['Roast Chicken']],
['Mammal', 'Mud', ['Pig']],
['Pig', 'Fire', ['Ham']],
['Pig', 'Smoke', ['Bacon']],
['Mammal', 'Grass', ['Cow']],
['Cow', 'Fire', ['Steak']],
['Grass', 'Air', ['Wheat']],
['Wheat', 'Stone', ['Flour']],
['Flour', 'Water', ['Dough']],
['Dough', 'Fire', ['Bread']],
['Bread', 'Fire', ['Toast']],
['Metal', 'Stone', ['Blade']],
['Blade', 'Stick', ['Knife']],
['Knife', 'Wood', ['Shavings']],
['Water', 'Shavings', ['Wood Pulp']],
['Fire', 'Wood Pulp', ['Paper']],
['Cold', 'Water', ['Ice']],
['Cold', 'Rain', ['Snow']],
['Ocean', 'Life', ['Fish']],
['Ocean', 'Mammal', ['Whale']],
['Mammal', 'Cloud', ['Sheep']],
['Human', 'Axe', ['Worker']],
['Worker', 'Metal', ['Blacksmith']],
['Worker', 'Sheep', ['Shepherd']],
['Worker', 'Wheat', ['Farmer']],
['Metal', 'Electricity', ['Wire']],
['Wire', 'Wire', ['Computer']],
['Human', 'Computer', ['Robot']],
['Computer', 'Computer', ['Network']],
['Network','Network',['Internet']],
['Human', 'Mammal', ['Pet']],
['Pet', 'Milk', ['Cat']],
['Pet', 'Bone', ['Dog']],
['Cat', 'Internet', ['Meme']],
['Human', 'Fire', ['Corpse']],
['Corpse', 'Fire', ['Bone', 'Ash']],
['Corpse', 'Life', ['Zombie']],
['Planet', 'Life', ['Alien']],
['Star', 'Rain', ['Rainbow']],
['Rainbow','Mammal', ['Unicorn']],
['Fire', 'Fire', ['Bonfire']],
['Rain', 'Rain', ['Storm']],
['Storm', 'Wind', ['Hurricane']],
['Hurricane','Wind', ['Tornado']],
['Plant', 'Earth', ['Potato']],
['Plant', 'Plant', ['Fruit']],
['Fruit', 'Tree', ['Apple']],
['Fruit', 'Water', ['Watermelon']],
['Fruit', 'Egg', ['Eggplant']],
['Fish', 'Earth', ['Crab']],
['Cow', 'Water', ['Milk']],
['Milk', 'Energy', ['Butter']],
['Tree', 'Tree', ['Forest']],
['Forest', 'Monkey', ['Jungle']],
['Fruit', 'Monkey', ['Banana']],
['Metal', 'City', ['Skyscraper']],
['Fish', 'Pet', ['Goldfish']],
['Energy', 'Wood', ['Wheel']]
['Wheel', 'Metal', ['Car']],
['Paper', 'Paper', ['Book']],
['Family', 'Love', ['Children']],
['House', 'Children', ['School']]
]
// Get the outputs when two elements are combined
function getOutputs(e1, e2) {
for(let r = 0; r < recipes.length; r++) {
if((recipes[r][0] == e1 && recipes[r][1] == e2) || (recipes[r][0] == e2 && recipes[r][1] == e1)) {
return recipes[r][2];
}
}
return null;
}
// Get the color of a class
function getColor(clazz) {
for(let c = 0; c < classes.length; c++) {
if(classes[c][0] == clazz) {
return [classes[c][1], classes[c][2], classes[c][3]];
}
}
}
// Get the class of an element
function getClass(element) {
let clazz = classes[0][0];
for(let e = 0; e < elements.length; e++) {
if(elements[e][0] == element) {
clazz = elements[e][1]
}
}
return clazz;
}
// The help text shown when 'q' is pressed
let helpText =
'Click on an element to select it and then click' +
' on another one to combine them. Try to get all ' +
elements.length + '!' +
'\n \n' +
'A hint will select an element that you can combine' +
' with another element you have to create something' +
' you do not have.' +
'\n \n' +
'Sorting modes will sort your elements either by' +
' order added, alphabetically, by class, or randomly.' +
'\n \n' +
'Some elements can be combined with themselves. Some' +
' elements cannot be used in any combinations.' +
'\n' +
'\n Q - View this help message' +
'\n M - Change sorting mode' +
'\n T - Show/hide time' +
'\n H - Use a hint' +
'\n Enter - Recalculate' +
'\n Mouse Wheel - Scrolling' +
'\n X - Clear savedata';

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{% set meta={"title": "Elements Game", "desc": "Combine elements to create more elements (now with 20% more bugs!)"} %}
{% extends "/_base.html" %}
{% block head %}
<script src="sketch.js"></script>
<script src="inputs.js"></script>
<script src="data.js"></script>
<script src="sorting.js"></script>
<script src="cookies.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/js-cookie/2.2.1/js.cookie.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/p5@1.4.0/lib/p5.js"></script>
{% endblock %}

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// When mouse is clicked
function mouseClicked() {
// Get index of element clicked
let i = getIndexOfCoords(mouseX, mouseY);
if(curIndex == -1 && i < found.length && i >= 0) {
// If no element is selected and an element was clicked on, select the element that was just clicked
curIndex = i;
} else if(i < found.length && i >= 0) {
// If an element is selected and an element was clicked on, combine them
combine(sortedFound[curIndex], sortedFound[i]);
curIndex = -1;
} else {
// If the empty backgound was clicked, clear the selected element
curIndex = -1;
}
}
// Scroll the elements
function mouseWheel(event) {
if(event.delta > 0)
offset++;
if(event.delta < 0 && offset > 0)
offset--;
return false;
}
function keyTyped() {
if(key == 'q') {
// Show help text
window.alert(helpText);
} else if(key == 'm') {
// Change mode
nextSortMode();
foundUpdated();
} else if(key == 't') {
// Show/hide stopwatch
showTime = !showTime;
} else if(key == 'h') {
// Try to give a hint
if(numHints > 0) {
getHint();
numHints--;
saveCookie();
}
} else if(key == 'x') {
Cookies.remove('savedata', {path: ''});
clearText = true;
} else if(keyCode == ENTER) {
// Recalculate
foundUpdated();
clearText = false;
}
return false;
}

177
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// Initial elements the user starts with
let found = ['Water', 'Earth', 'Fire', 'Air'];
// Sorted list of elements
let sortedFound = found;
// Number of hints available
let numHints = 1;
// Next number of milliseconds after start to give new hint at
let nextHint = 60000;
// Saved time for cookies
let savedTime = 0;
// Index of selected element
let curIndex = -1;
// Scroll offset
let offset = 0;
// Whether or not to show the stopwatch
let showTime = true;
//
let clearText = false;
function setup() {
createCanvas(600, 600);
loadCookie();
}
function draw() {
// Black background
background(0);
if(clearText) {
noStroke();
fill(255, 0, 0)
textSize(22);
textFont('Calibri');
textAlign(CENTER, CENTER);
text('Savedata cleared. Please reload the page.\nIf this was a mistake, press ENTER', width/2, height/2);
return;
}
if(frameCount == 0) {
foundUpdated();
}
noStroke();
manageHints();
drawFound();
showText();
}
function manageHints() {
if(numHints < 5) {
if(realMillis() >= nextHint) {
numHints++;
nextHint = realMillis() + 60000;
saveCookie();
}
} else {
nextHint = realMillis() + 60000;
}
}
function showText() {
textSize(18);
textAlign(CENTER, CENTER);
// Show number of elements found
text('Found: ' + found.length + ' / ' + elements.length, 300, 15);
textAlign(LEFT, CENTER);
// Show current sorting mode
text('Sort Mode: ' + getSortModeName(), 3, 585);
textAlign(RIGHT, CENTER);
// Show help message
text('Press Q for Help', 597, 585);
// Show stopwatch if supposed to
if(showTime) {
textAlign(RIGHT, CENTER);
let min = ('0' + floor(realMillis()/60000)).slice(-2);
let sec = ('0' + floor((realMillis()/1000)%60)).slice(-2);
text('Time: ' + min + ':' + sec, 597, 15);
}
textAlign(CENTER, CENTER);
// Show number of hints and time until next hint
let timeText = (numHints >= 5) ? '' : ' (' + ceil((nextHint - realMillis())/1000) + ' sec)';
text('Hints: ' + numHints + timeText, 300, 585);
if(clearText) {
background(0)
textAlign(CENTER, CENTER);
text('Savedata cleared. Please reload the page ');
}
}
function drawFound() {
textSize(14);
textFont('Calibri');
textAlign(CENTER, CENTER);
for(let i = 0; i < found.length; i++) {
// Calculate grid-y coordinate
let gridy = floor(i / 9) - offset
// Draw the element at the grid-x and grid-y positions if it's onscreen
if(gridy >= 0 && gridy < 9)
drawElement(i % 9, gridy, sortedFound[i]);
}
}
// Size of elements
let es = 50;
function drawElement(x, y, elem) {
// Calculate real x and y coordinates from grid-x and grid-y
let realx = x*es*1.25 + es;
let realy = y*es*1.25 + es;
// Draw a white circle around the selected element
if(sortedFound[curIndex] == elem) {
fill(240);
ellipse(realx, realy, es*1.1);
}
// Draw the element as a colored circle
fill(getColor(getClass(elem)));
ellipse(realx, realy, es);
// Show the name of the element
fill(255);
text(elem, realx, realy);
}
// Combine two elements and add the outcome to the found list
function combine(e1, e2) {
let e3 = getOutputs(e1, e2);
if(e3 != null) {
for(let i = 0; i < e3.length; i++) {
if(found.indexOf(e3[i]) < 0) {
found.push(e3[i]);
}
}
}
foundUpdated();
}
// Convert real-x and real-y to an index. Returns -1 if invalid
function getIndexOfCoords(x, y) {
let ex = round((x - es)/(es*1.25));
let ey = round((y - es)/(es*1.25));
if(ex < 0 || ey < 0 || ex > 8 || ey > 8) {
return -1;
}
return ex + (ey + offset)*9;
}
// Selects an element that can be used right now
function getHint() {
// If all elements have been found
if(found.length >= elements.length) return false;
// Select random elements until one works
let e1 = random(found);
while(true) {
// Go through each of the elements
for(let i = 0; i < found.length; i++) {
let outputs = getOutputs(e1, found[i]);
let hasOutput = false;
for(let i = 0; outputs != null && i < outputs.length; i++) {
if(found.indexOf(outputs[i]) < 0) hasOutput = true;
}
// If the random element can be combined with another element to produce new
// results, select it and return
if(outputs != null && hasOutput) {
curIndex = found.indexOf(e1);
return true;
}
}
e1 = random(found);
}
}
function realMillis() {
return millis() + savedTime;
}
// When adding, removing, or changing found elements always call this immediately after
function foundUpdated() {
sortedFound = aSort(found);
saveCookie();
}

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// Current sort mode
let sortMode = 0;
// Go to next sort mode
function nextSortMode() {
sortMode = (sortMode + 1) % 7;
}
// Sort array based on current sort mode
function aSort(arr) {
newArr = arr.slice(0);
switch(sortMode) {
case 0:
return creationSort(newArr);
case 1:
return creationSort(newArr).reverse();
case 2:
return nameSort(newArr);
case 3:
return nameSort(newArr).reverse();
case 4:
return classSort(newArr);
case 5:
return classSort(newArr).reverse();
case 6:
return randomSort(newArr);
}
}
// Get the name of the current sort mode
function getSortModeName() {
switch(sortMode) {
case 0:
return 'Creation Time';
case 1:
return 'Creation Time (Reverse)';
case 2:
return 'Name';
case 3:
return 'Name (Reverse)';
case 4:
return 'Class';
case 5:
return 'Class (Reverse)';
case 6:
return 'Random';
}
return 'Mode ' + mode;
}
// Sort in order of the list
function creationSort(arr) {
return arr;
}
// Sort alphabetically
function nameSort(arr) {
arr.sort()
return arr;
}
// Sort by class
function classSort(arr) {
arr.sort();
arr.sort(function(a, b) {
let ac = getClass(a), bc = getClass(b);
if(ac > bc) {
return 1;
} else if(ac == bc) {
return 0;
} else return -1;
})
return arr;
}
// Sort randomly
function randomSort(arr) {
arr.sort(function(a, b) {
return random() - 0.5;
})
return arr;
}

23
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function loadAssets() {
loadImage('/static/i/flappy/background1.png', function(img) {
bgImage1 = img;
console.log('Loaded image assets/background1.png')
}, function(evt) {
console.error('Failed to load image assets/background1.jpg: ', evt);
bgImage1 = createImage(160, 32);
});
loadImage('/static/i/flappy/background2.png', function(img) {
bgImage2 = img;
console.log('Loaded image assets/background2.png')
}, function(evt) {
console.error('Failed to load image assets/background2.jpg: ', evt);
bgImage2 = createImage(160, 32);
});
loadImage('/static/i/flappy/bird.png', function(img) {
birdImage = img;
console.log('Loaded image assets/bird.png')
}, function(evt) {
console.error('Failed to load image assets/bird.jpg: ', evt);
birdImage = createImage(32, 32);
});
}

30
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function Bird() {
this.width = birdHitboxSize;
this.height = birdHitboxSize;
this.iconwidth = birdDrawSize;
this.iconheight = birdDrawSize;
this.pos = height/2-this.height/2;
this.vel = 0;
this.acc = initialAcceleration;
this.xpos = birdXPosition;
this.show = function() {
image(birdImage, this.xpos, this.pos, this.iconwidth, this.iconheight);
}
this.update = function() {
this.vel += this.acc;
this.vel = constrain(this.vel, -termVel, termVel);
this.pos += this.vel;
this.acc = 0;
}
this.applyForce = function(force, type) {
if(type === 'flap' && cancelVelocity == 1) {
this.vel = 0;
this.acc = force;
} else {
this.acc += force;
}
}
}

25
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function Block() {
this.x = width+capWidth;
this.y = height-(random(height-blockSize)+blockSize);
this.passed = false;
this.show = function() {
stroke(0);
strokeWeight(3);
fill(100, 200, 100);
rect(this.x, this.y, blockSize, blockSize);
if(this.x + blockSize < 0) return true;
return false;
}
this.intersects = function(b) {
if(b.xpos+b.width > this.x && b.xpos < this.x+blockSize) {
if(!this.passed) {
this.passed = true;
score++;
}
return (b.pos+b.width > this.y && b.pos < this.y+blockSize);
}
}
}

233
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let gravity = 1.2;
let termVel = 25;
let flapForce = -22;
let birdDrawSize = 60;
let birdHitboxSize = 60;
let pipeGap = 240;
let pipeCap = 120;
let pipeWidth = 130;
let capWidth = 200;
let blockSize = 360;
let framesBetweenObstacle = 240;
let scrollSpeed = 1;
let blockChance = 0.33333;
let birdXPosition = 300
let initialAcceleration = -3;
let cancelVelOptions = ['No', 'Yes']
let cancelVelocity = 0;
let guiElems = [];
let activeElement = undefined;
function toggleVelOptions(element, mouseButton) {
cancelVelocity = 1 - cancelVelocity
element.text = cancelVelOptions[cancelVelocity];
}
function flipGravity(element, mouseButton) {
guiElems[2].text = ''+-1*guiElems[2].text;
guiElems[6].text = ''+-1*guiElems[6].text;
guiElems[30].text = ''+-1*guiElems[30].text;
}
function saveAndExit(element, mouseButton) {
gravity = 1*guiElems[2].text;
termVel = 1*guiElems[4].text;
flapForce = 1*guiElems[6].text;
birdDrawSize = 1*guiElems[8].text;
birdHitboxSize = 1*guiElems[10].text;
pipeGap = 1*guiElems[12].text;
pipeCap = 1*guiElems[14].text;
pipeWidth = 1*guiElems[16].text;
capWidth = 1*guiElems[18].text;
blockSize = 1*guiElems[20].text;
framesBetweenObstacle = 1*guiElems[22].text;
scrollSpeed = 1*guiElems[24].text;
blockChance = 1*guiElems[26].text;
birdXPosition = 1*guiElems[28].text;
initialAcceleration = 1*guiElems[30].text;
gamestate = 'start';
}
function initMenu() {
guiElems[0] = new Button(50, height-90, width-100, 40, 'Save & Exit', saveAndExit);
guiElems[1] = new Label (50, 50, 140, 40, 'Gravity: ');
guiElems[2] = new Textbox (250, 50, 200, 40, gravity);
guiElems[3] = new Label (50, 100, 140, 40, 'Terminal velocity: ');
guiElems[4] = new Textbox (250, 100, 200, 40, termVel);
guiElems[5] = new Label (50, 150, 140, 40, 'Flap force: ');
guiElems[6] = new Textbox (250, 150, 200, 40, flapForce);
guiElems[7] = new Label (50, 200, 140, 40, 'Bird icon size: ');
guiElems[8] = new Textbox (250, 200, 200, 40, birdDrawSize);
guiElems[9] = new Label (50, 250, 140, 40, 'Bird hitbox size: ');
guiElems[10] = new Textbox(250, 250, 200, 40, birdHitboxSize);
guiElems[11] = new Label (50, 300, 140, 40, 'Pipe gap: ');
guiElems[12] = new Textbox(250, 300, 200, 40, pipeGap);
guiElems[13] = new Label (50, 350, 140, 40, 'Pipe cap size: ');
guiElems[14] = new Textbox(250, 350, 200, 40, pipeCap);
guiElems[15] = new Label (50, 400, 140, 40, 'Pipe width: ');
guiElems[16] = new Textbox(250, 400, 200, 40, pipeWidth);
guiElems[17] = new Label (50, 450, 140, 40, 'Cap width: ');
guiElems[18] = new Textbox(250, 450, 200, 40, capWidth);
guiElems[19] = new Label (50, 500, 140, 40, 'Block size: ');
guiElems[20] = new Textbox(250, 500, 200, 40, blockSize);
guiElems[21] = new Label (550, 50, 140, 40, 'Frames between obstacle: ');
guiElems[22] = new Textbox(750, 50, 200, 40, framesBetweenObstacle);
guiElems[23] = new Label (550, 100, 140, 40, 'Scroll speed: ');
guiElems[24] = new Textbox(750, 100, 200, 40, scrollSpeed);
guiElems[25] = new Label (550, 150, 140, 40, 'Block chance: ');
guiElems[26] = new Textbox(750, 150, 200, 40, blockChance);
guiElems[27] = new Label (550, 200, 140, 40, 'Bird X position: ');
guiElems[28] = new Textbox(750, 200, 200, 40, birdXPosition);
guiElems[29] = new Label (550, 250, 140, 40, 'Initial acceleration: ');
guiElems[30] = new Textbox(750, 250, 200, 40, initialAcceleration);
guiElems[31] = new Label (575, 300, 140, 40, 'Cancel velocity when flapping: ');
guiElems[32] = new Button(850, 300, 100, 40, cancelVelOptions[cancelVelocity], toggleVelOptions);
guiElems[33] = new Button(525, 450, 405, 40, 'Flip gravity', flipGravity);
}
function drawMenu(width, height) {
background(25);
for(const elem of guiElems) {
elem.show();
}
}
function menuKey(key, keyCode) {
if(activeElement) {
activeElement.onKeyType(key, keyCode);
}
}
function menuPress(mouseX, mouseY, button) {
for(const elem of guiElems) {
if(mouseX >= elem.x && mouseY >= elem.y
&& mouseX < (elem.x + elem.w) && mouseY < (elem.y + elem.h)) {
elem.onPress(mouseX, mouseY, mouseX - elem.x, mouseY - elem.y, button);
return;
}
}
}
function menuRelease(mouseX, mouseY, button) {
for(const elem of guiElems) {
if(mouseX >= elem.x && mouseY >= elem.y
&& mouseX < (elem.x + elem.w) && mouseY < (elem.y + elem.h)) {
elem.onRelease(mouseX, mouseY, mouseX - elem.x, mouseY - elem.y, button);
return;
}
}
}
function menuClick(mouseX, mouseY, button) {
for(const elem of guiElems) {
if(mouseX >= elem.x && mouseY >= elem.y
&& mouseX < (elem.x + elem.w) && mouseY < (elem.y + elem.h)) {
elem.onClick(mouseX, mouseY, mouseX - elem.x, mouseY - elem.y, button);
return;
}
}
activeElement = undefined;
}
class GUIElement {
constructor(x, y, w, h) {
this.x = x;
this.y = y;
this.w = w;
this.h = h;
this.enabled = true;
this.pressed = false;
}
onPress(absX, absY, relX, relY, mouseButton) { this.pressed = true; }
onRelease(absX, absY, relX, relY, mouseButton) { this.pressed = false; }
onClick(absX, absY, relX, relY, mouseButton) { activeElement = this; }
onKeyType(key, keyCode) { }
isActive() { return false; }
setEnabled(enabled) { this.enabled = enabled; }
show() { }
}
class Button extends GUIElement{
constructor(x, y, w, h, text, onClickFunc) {
super(x, y, w, h);
this.text = text;
this.onClickFunc = onClickFunc;
}
onClick(absX, absY, relX, relY, mouseButton) {
activeElement = this;
this.onClickFunc(this, mouseButton)
}
show() {
stroke(255);
strokeWeight(3);
fill(this.pressed ? 25 : 120);
rect(this.x, this.y, this.w, this.h);
textSize(18);
textAlign(CENTER, CENTER);
noStroke();
fill(255);
text(this.text, this.x+this.w/2, this.y+this.h/2)
}
}
class Label extends GUIElement{
constructor(x, y, w, h, text,) {
super(x, y, w, h);
this.text = text;
}
show() {
textSize(18);
textAlign(CENTER, CENTER);
noStroke();
fill(255);
text(this.text, this.x+this.w/2, this.y+this.h/2)
}
}
class Textbox extends GUIElement{
constructor(x, y, w, h, text) {
super(x, y, w, h);
this.text = '' + text + '';
this.cursor = 0;
}
onKeyType(key, keyCode) {
if(keyCode == 8) {
if(cursor != 0) {
this.text = this.text.slice(0, this.cursor-1) + this.text.slice(this.cursor)
this.cursor = Math.min(this.text.length, this.cursor = Math.max(0, this.cursor))
}
} else if(keyCode == 37) {
this.cursor = Math.max(0, this.cursor-1)
} else if(keyCode == 39) {
this.cursor = Math.min(this.text.length, this.cursor+1)
} else if(key.length == 1) {
this.text = this.text.slice(0, this.cursor) + key + this.text.slice(this.cursor)
this.cursor += 1;
}
}
onClick(absX, absY, relX, relY, mouseButton) {
activeElement = this;
}
show() {
stroke(255);
strokeWeight(3);
fill(25);
rect(this.x, this.y, this.w, this.h);
textSize(18);
textAlign(CENTER, CENTER);
noStroke();
fill(255);
let displayText = this.text;
if(activeElement === this) {
displayText = this.text.slice(0, this.cursor)
+ (millis()%1000 > 500 ? '│' : ' ')
+ this.text.slice(this.cursor);
}
text(displayText, this.x+this.w/2, this.y+this.h/2)
}
}

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{% set meta={"title": "Flappy", "desc": "Flappy", "fullscreen": True} %}
{% extends "/_base.html" %}
{% block head %}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/p5@1.4.0/lib/p5.js"></script>
<script src="input.js"></script>
<script src="data.js"></script>
<script src="assets.js"></script>
<script src="main.js"></script>
<script src="bird.js"></script>
<script src="pipe.js"></script>
<script src="block.js"></script>
{% endblock %}

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// Prevent backspace key from going back in page history
$(document).unbind('keydown').bind('keydown', function (event) {
if (event.keyCode === 8) {
var doPrevent = true;
var types = ["text", "password", "file", "search", "email", "number", "date", "color", "datetime", "datetime-local", "month", "range", "search", "tel", "time", "url", "week"];
var d = $(event.srcElement || event.target);
var disabled = d.prop("readonly") || d.prop("disabled");
if (!disabled) {
if (d[0].isContentEditable) {
doPrevent = false;
} else if (d.is("input")) {
var type = d.attr("type");
if (type) {
type = type.toLowerCase();
}
if (types.indexOf(type) > -1) {
doPrevent = false;
}
} else if (d.is("textarea")) {
doPrevent = false;
}
}
return !doPrevent;
}
});
document.addEventListener('keydown', keyDown);
function keyDown(e) {
if(gamestate == 'menu') {
menuKey(e.key, e.keyCode);
}
else if(e.key == ' ' && gamestate != 'dead' && gamestate != 'start')
bird.applyForce(flapForce, 'flap');
else if(e.keyCode == 13 && (gamestate == 'dead' || gamestate == 'start')) {
newGame()
}
}

167
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var bgImage1;
var bgImage2;
var birdImage;
var bird;
var pipes = [];
var blocks = [];
var gamestate = 'ld';
var bscroll1 = 0;
var bscroll2 = 0;
var score = 0;
var frame = 0;
function setup() {
var canvas = createCanvas(windowWidth, windowHeight).elt;
var context = canvas.getContext('2d');
context.mozImageSmoothingEnabled = false;
context.webkitImageSmoothingEnabled = false;
context.msImageSmoothingEnabled = false;
context.imageSmoothingEnabled = false;
textFont('Courier New');
frameRate(30);
initMenu();
loadAssets();
}
function draw() {
if(gamestate == 'ld') {
drawLoading();
} else if(gamestate == 'game') {
background(25);
var imageWidth = bgImage1.width*(height/bgImage1.height);
drawBackground(imageWidth);
doBird();
pipesAndBlocks();
showScore();
bscroll1 += 2*scrollSpeed;
bscroll1 %= imageWidth;
bscroll2 += 1*scrollSpeed;
bscroll2 %= imageWidth;
frame++;
} else if(gamestate == 'dead' || gamestate == 'start') {
background(25);
textAlign(CENTER, CENTER);
noStroke();
fill(255);
textSize(100);
if(gamestate == 'dead') {
text('You died!', width/2, height/2-150);
textSize(50);
text('Score: ' + score, width/2, height/2);
text('Play', width/2-width/7, height/2+150);
text('Options', width/2+width/7, height/2+150);
} else if(gamestate == 'start') {
text('Flappy T', width/2, height/2-150);
textSize(50);
text('Play', width/2-width/7, height/2+150);
text('Options', width/2+width/7, height/2+150);
}
} else if(gamestate == 'menu') {
drawMenu();
}
}
function drawBackground(imageWidth) {
image(bgImage2, -bscroll2, 0, imageWidth, height);
image(bgImage2, -bscroll2+imageWidth, 0, imageWidth, height);
image(bgImage1, -bscroll1, 0, imageWidth, height);
image(bgImage1, -bscroll1+imageWidth, 0, imageWidth, height);
}
function doBird() {
bird.applyForce(gravity, 'grav');
bird.update();
bird.show();
if(bird.pos > height) gamestate = 'dead';
if(bird.pos < -bird.height) gamestate = 'dead';
}
function pipesAndBlocks() {
if(frame % framesBetweenObstacle == 0) {
if(random(1) < blockChance)
blocks.push(new Block());
else
pipes.push(new Pipe());
}
for(var i = 0; i < pipes.length; i++) {
pipes[i].x -= 3*scrollSpeed;
var p = pipes[i].show();
if(pipes[i].intersects(bird)) gamestate = 'dead';
if(p) {
pipes.splice(i, 1);
i--;
}
}
for(var i = 0; i < blocks.length; i++) {
blocks[i].x -= 3*scrollSpeed;
var p = blocks[i].show();
if(blocks[i].intersects(bird)) gamestate = 'dead';
if(p) {
blocks.splice(i, 1);
i--;
}
}
}
function showScore() {
textAlign(CENTER, CENTER);
stroke(0);
strokeWeight(3);
fill(255);
textSize(120);
text(score, width/2, 100);
}
function drawLoading() {
background(25);
var total = 3;
var count = 0;
if(bgImage1 != undefined) count++;
if(bgImage2 != undefined) count++;
if(birdImage != undefined) count++;
if(count >= total) gamestate = 'start';
var w = (count/total)*(width-50);
noStroke();
fill(0, 255, 0);
rect(25, 25, w, 75);
}
function windowResized() {
resizeCanvas(windowWidth, windowHeight);
}
function newGame() {
bird = new Bird();
blocks = [];
pipes = [];
frame = 0;
score = 0;
gamestate = 'game';
}
function mousePressed() {
if(gamestate == 'menu') {
menuPress(mouseX, mouseY, mouseButton);
}
}
function mouseReleased() {
if(gamestate == 'menu') {
menuRelease(mouseX, mouseY, mouseButton);
}
}
function mouseClicked() {
if(gamestate == 'menu') {
menuClick(mouseX, mouseY, mouseButton);
} else if(gamestate == 'game' ) {
bird.applyForce(flapForce, 'flap');
} else if((gamestate == 'start' || gamestate == 'dead') && mouseY > height/2 + 75) {
if(mouseX < width/2) {
newGame()
} else {
gamestate = 'menu'
}
}
}

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function Pipe() {
this.x = width+capWidth;
this.top = height-(random(height - pipeCap*2 - pipeGap)+pipeCap+pipeGap);
this.bottom = this.top+pipeGap;
this.passed = false;
this.show = function() {
stroke(0);
strokeWeight(3);
fill(100, 200, 100);
rect(this.x, -10, pipeWidth, this.top);
rect(this.x, this.bottom, pipeWidth, height+10);
rect(this.x-capWidth/2+pipeWidth/2, this.top-pipeCap, capWidth, pipeCap);
rect(this.x-capWidth/2+pipeWidth/2, this.bottom, capWidth, pipeCap);
if(this.x + capWidth < 0) return true;
return false;
}
this.intersects = function(b) {
if(b.xpos+b.width > this.x && b.xpos < this.x+pipeWidth) {
if(!this.passed) {
this.passed = true;
score++;
}
return (b.pos < this.top || b.pos+b.height > this.bottom);
}
}
}

95
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{% set meta={"title": "Fraction to base n", "desc": "Convert fractions to digit expansions in different bases"} %}
{% extends "/_base.html" %}
{% block head %}
<script>
const SYMBOLS = "0123456789abcdefghijklmnopqrstuvwxyz";
function getInputs() {
const errorDiv = document.getElementById("error");
error.textContent = "";
const numer = parseInt(document.getElementById("numer").value);
const denom = parseInt(document.getElementById("denom").value);
const base = parseInt(document.getElementById("base").value);
const digits = parseInt(document.getElementById("digits").value);
if(isNaN(numer) || isNaN(denom) || isNaN (base) || isNaN(digits)) {
errorDiv.textContent = "Error: inputs must be integers";
return;
}
const blockform = document.getElementById("blockform").checked;
if(denom === 0) {
errorDiv.textContent = "Error: denominator must be nonzero";
return;
}
if(base < 2) {
errorDiv.textContent = "Error: base must be 2 or greater";
return;
}
if(!blockform && base > 36) {
errorDiv.textContent = "Error: bases greater than 36 require block form";
return;
}
if(digits < 0) {
errorDiv.textContent = "Error: digit count must be nonnegative";
return;
}
return [numer, denom, base, digits, blockform];
}
function calc() {
[numer, denom, base, digits, blockform] = getInputs();
console.log(numer, denom, base, digits, blockform);
const sign = Math.sign(numer * denom);
numer = Math.abs(numer);
denom = Math.abs(denom);
const intpart = Math.floor(numer / denom);
const fracpart = numer % denom;
// int part
let intpartDigits = [];
let num = intpart;
while(num !== 0) {
intpartDigits.push(num % base);
num = Math.floor(num / base);
}
intpartDigits.reverse();
let fracpartDigits = [];
num = fracpart;
for(let i = 0; i < digits && num !== 0; i++) {
num *= base;
fracpartDigits.push(Math.floor(num / denom));
num %= denom
}
let result = (sign === -1 ? "-" : "");
if(blockform) {
let intpartStr = intpartDigits.join(":");
if(intpartStr.length == 0) { intpartStr = "0"; }
let fracpartStr = fracpartDigits.join(":")
if(fracpartStr.length > 0) { fracpartStr = "." + fracpartStr + ":"; }
result += intpartStr + fracpartStr;
} else {
let intpartStr = intpartDigits.map(x => SYMBOLS[x]).join("");
if(intpartStr.length == 0) { intpartStr = "0"; }
let fracpartStr = fracpartDigits.map(x => SYMBOLS[x]).join("")
if(fracpartStr.length > 0) { fracpartStr = "." + fracpartStr; }
result += intpartStr + fracpartStr;
}
document.getElementById("result").textContent = result;
}
</script>
{% endblock%}
{% block content%}
<div>Numerator: <input type="number" id="numer" /></div>
<div>Denominator: <input type="number" id="denom" /></div>
<div>Base: <input type="number" id="base" /></div>
<div>Digits: <input type="number" id="digits" /></div>
<div><input type="checkbox" id="blockform" /> Show block form</div>
<div><input type="button" id="calc" value="Calculate" onclick="calc();" /></div>
<div>Result:&nbsp;<span id="result" style="color: var(--accent-2);"></span></div>
<div id="error" class="error"></div>
{% endblock %}

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function createCanvas(selector, width, height, spacing, mouseOver) {
const result = {
xsize: Math.ceil(width/spacing),
ysize: Math.ceil(height/spacing),
spacing: spacing,
undoStack: [],
redoStack: [],
undoFrame: null,
};
result.width = result.xsize*spacing;
result.height = result.ysize*spacing;
const svg = d3.select(selector).append("svg")
.attr("id", "canvas")
.attr("width", result.width)
.attr("height", result.height)
.style("background", "white");
const cells = svg.append("g").attr("id", "canvas-cells");
const lines = svg.append("g").attr("id", "canvas-lines");
for(let i = 0; i < result.ysize; i++) {
lines.append("line")
.style("stroke", "#888")
.attr("class", "line")
.attr("x1", 0)
.attr("x2", result.width)
.attr("y1", i*result.spacing)
.attr("y2", i*result.spacing);
}
for(let i = 0; i < result.xsize; i++) {
lines.append("line")
.style("stroke", "#888")
.attr("class", "line")
.attr("y1", 0)
.attr("y2", result.height)
.attr("x1", i*result.spacing)
.attr("x2", i*result.spacing);
}
svg.on("scroll", ()=>{});
svg.on("contextmenu", (event, d)=>{event.preventDefault();});
svg.on("mousedown", (event, d)=>{
window.mouseButton = event.button;
result.beginUndoFrame("draw");
mouseOver(d3.pointer(event));
});
svg.on("mousemove", (event, d)=>{
if(window.mouseButton !== null) {
mouseOver(d3.pointer(event));
}
});
svg.on("mouseup", (event, d)=>{
window.mouseButton = null;
result.endUndoFrame();
});
result.svg = svg;
result.beginUndoFrame = function(type) {
result.undoFrame = [];
}
result.endUndoFrame = function() {
if(result.undoFrame.length > 0) {
result.undoStack.push(result.undoFrame);
}
result.undoFrame = null;
}
result.undo = function() {
if(result.undoStack.length > 0) {
const frame = result.undoStack.pop();
for(const change of frame.reverse()) {
result.setCell(change.x, change.y, change.before);
}
result.redoStack.push(frame);
}
}
result.redo = function() {
if(result.redoStack.length > 0) {
const frame = result.redoStack.pop();
for(const change of frame) {
result.setCell(change.x, change.y, change.after);
}
result.undoStack.push(frame);
}
}
result.clear = function() {
result.beginUndoFrame();
for(let x = 0; x < result.xsize; x++) {
for(let y = 0; y < result.xsize; y++) {
result.setCell(x, y, null);
}
}
result.endUndoFrame();
}
result.setCell = function(x, y, color) {
const cell = d3.select("#cell-"+x+"-"+y);
if(color === null) {
if(cell.size() != 0) {
if(result.undoFrame){
result.undoFrame.push({
x: x,
y: y,
before: cell.style("fill"),
after: null
});
}
cell.remove();
}
} else {
if(cell.size() == 0) {
if(result.undoFrame){
result.undoFrame.push({
x: x,
y: y,
before: null,
after: color
});
}
d3.select("#canvas-cells").append("rect")
.style("stroke-width", 0)
.style("fill", color)
.attr("id", "cell-"+x+"-"+y)
.attr("x", x*result.spacing)
.attr("y", y*result.spacing)
.attr("width", result.spacing)
.attr("height", result.spacing);
} else {
if(cell.style("fill") == color) {
return;
}
if(result.undoFrame){
result.undoFrame.push({
x: x,
y: y,
before: cell.style("fill"),
after: color
});
}
cell.style("fill", color);
}
}
}
result.setbg = function(color) {
svg.style("background", color);
}
result.setlinecol = function(color) {
const lines = d3.selectAll(".line");
if(color !== null) {
lines.style("stroke", color);
} else {
const cur = lines.attr("visibility");
if(cur == "hidden") {
lines.attr("visibility", null);
} else {
lines.attr("visibility", "hidden");
}
}
}
return result;
}

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function HSVtoRGB(c){var r,g,b,i,f,p,q,t,h=c.h,s=c.s,v=c.v;i=Math.floor(h*6);f=h*6-i;p=v*(1-s);q=v*(1-f*s);t=v*(1-(1-f)*s);switch(i%6){case 0:r=v,g=t,b=p;break;case 1:r=q,g=v,b=p;break;case 2:r=p,g=v,b=t;break;case 3:r=p,g=q,b=v;break;case 4:r=t,g=p,b=v;break;case 5:r=v,g=p,b=q;break}return "rgb("+Math.round(r*255)+", "+Math.round(g*255)+", "+Math.round(b*255)+")"}
function RGBtoHEX(c){return "#"+c.split("(")[1].split(")")[0].split(",").map((x)=>{x=parseInt(x).toString(16);return(x.length==1)?"0"+x:x}).join("")}
function HEXtoHSV(c){var r=parseInt(c[1]+c[2],16)/255,g=parseInt(c[3]+c[4],16)/255,b=parseInt(c[5]+c[6],16)/255,cmax,cmin,diff,h,s;cmax=Math.max(r,g,b);cmin=Math.min(r,g,b);diff=cmax-cmin;if(cmax==cmin){h=0}else if(cmax==r){h=(((g-b)/diff)/6+1)%1}else if(cmax==g){h=(((b-r)/diff)/6+1/3)%1}else if(cmax==b){h=(((r-g)/diff)/6+2/3)%1}if(cmax==0){s=0}else{s=diff/cmax}return{h:h,s:s,v:cmax}}
function createColorpicker(selPickingArea, selPicker, selHuePickingArea, selHuePicker, selHexcode, selDisplay) {
const result = {
color: {h:0.6111,s:0.89,v:0.72}
};
const pickingArea = d3.select(selPickingArea);
const picker = d3.select(selPicker);
const huePickingArea = d3.select(selHuePickingArea);
const huePicker = d3.select(selHuePicker);
const hexcode = d3.select(selHexcode);
const display = d3.select(selDisplay);
pickingArea.on("contextmenu", (event, d)=>{event.preventDefault();});
pickingArea.on("mousedown", (event, d)=>{
event.preventDefault();
window.mouseButton = event.button;
colorChange(d3.pointer(event));
});
pickingArea.on("mousemove", (event, d)=>{
event.preventDefault();
if(window.mouseButton !== null) {
colorChange(d3.pointer(event));
}
});
pickingArea.on("mouseup", (event, d)=>{window.mouseButton = null;});
huePickingArea.on("contextmenu", (event, d)=>{event.preventDefault();});
huePickingArea.on("mousedown", (event, d)=>{
event.preventDefault();
window.mouseButton = event.button;
hueChange(d3.pointer(event));
});
huePickingArea.on("mousemove", (event, d)=>{
event.preventDefault();
if(window.mouseButton !== null) {
hueChange(d3.pointer(event));
}
});
huePickingArea.on("mouseup", (event, d)=>{window.mouseButton = null;});
hexcode.on("input", hexChange);
hexcode.on("change", hexChange);
hexcode.on("keypress", hexChange);
hexcode.on("paste", hexChange);
function hexChange(event, d) {
const val = event.target.value;
if(val.match(/#[0-9a-fA-F]{6}/)) {
result.color = HEXtoHSV(event.target.value);
result.updateColorOutput();
}
}
function colorChange(mouse) {
const xp = Math.min(Math.max(mouse[0],0),200);
const yp = Math.min(Math.max(mouse[1],0),200);
result.color.s = xp/200;
result.color.v = 1-yp/200;
result.updateColorOutput();
}
function hueChange(mouse) {
result.color.h = mouse[1]/200;
result.updateColorOutput();
}
result.updateColorOutput = function() {
const hsv = result.color;
const rgb = HSVtoRGB(hsv);
display.style("background", rgb);
hexcode.node().value = RGBtoHEX(rgb);
huePicker.style("top", hsv.h*200+"px");
picker.style("top", ((1-hsv.v)*200-4)+"px").style("left", (hsv.s*200-4)+"px");
pickingArea.style("background",
"-webkit-linear-gradient(top, #00000000, #000 100%),"+
"-webkit-linear-gradient(left, #fff, #ffffff00 100%),"+
HSVtoRGB({h:hsv.h,s:1,v:1})
);
}
return result;
}

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{% set meta={"title": "Griddraw", "desc": "Draw on a grid", "pagewidth": "90%"}%}
{% extends "/_base.html"%}
{% block head %}
<link href="style.css" type="text/css" rel="stylesheet" />
<script src="https://d3js.org/d3.v7.min.js"></script>
<script src="canvas.js"></script>
<script src="colorpicker.js"></script>
<script src="index.js"></script>
{% endblock %}
{% block title %}{% endblock %}
{% block content %}
<div class="flexcontainer" style="overflow: hidden visible">
<div class="leftcol">
<h1>Griddraw</h1>
<hr style="margin-right: 20px" />
<div id="colorpicker">
<div class="picking-area">
<div class="picker"></div>
</div>
<div class="hue-picking-area">
<div class="hue-picker"></div>
</div>
</div>
<div style="display: flex; flex-direction: row;">
<input type="text" id="hexcode" style="width: 100px;" value="#144bb8" />
<div id="colordisplay"></div>
</div>
<div>Left click - paint</div>
<div>Right click - erase</div>
<div>Middle click - pick color</div>
<div>
<input type="button" id="undo" value="&nbsp;↶ " />
<input type="button" id="redo" value="&nbsp;↷ " />
<input type="button" id="clear" value="Clear" />
</div>
<div>
<input type="button" id="setbg" value="Background color" />
</div>
<div>
<input type="button" id="setlines" value="Line color" />
<input type="button" id="togglelines" value="Toggle lines" />
</div>
</div>
<div class="rightcol scrollable">
<div id="canvas-wrapper"></div>
</div>
</div>
{% endblock %}

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window.onload = () => {
window.mouseButton = null;
window.canvas = createCanvas("#canvas-wrapper", window.innerWidth, window.innerHeight, 30, mouseOver);
window.colorpicker = createColorpicker(
".picking-area", ".picker",
".hue-picking-area", ".hue-picker",
"#hexcode", "#colordisplay"
);
d3.select("#undo").on("click", window.canvas.undo);
d3.select("#redo").on("click", window.canvas.redo);
d3.select("#clear").on("click", window.canvas.clear);
d3.select("#setbg").on("click", ()=>window.canvas.setbg(HSVtoRGB(window.colorpicker.color)));
d3.select("#setlines").on("click", ()=>window.canvas.setlinecol(HSVtoRGB(window.colorpicker.color)));
d3.select("#togglelines").on("click", ()=>window.canvas.setlinecol(null));
window.colorpicker.updateColorOutput();
};
function mouseOver(mouse) {
const x = Math.floor(mouse[0]/window.canvas.spacing);
const y = Math.floor(mouse[1]/window.canvas.spacing);
if(window.mouseButton == 0) {
window.canvas.setCell(x, y, HSVtoRGB(window.colorpicker.color));
} else if(window.mouseButton == 1) {
const cell = d3.select("#cell-"+x+"-"+y);
if(cell.size() > 0) {
const color = cell.style("fill");
const hsvcol = HEXtoHSV(RGBtoHEX(color));
window.colorpicker.color = hsvcol;
window.colorpicker.updateColorOutput();
}
} else if(window.mouseButton == 2) {
window.canvas.setCell(x, y, null);
}
}
window.addEventListener("scroll", ()=>{window.scrollTo(0, 0)});

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main {
max-width: 100%;
padding: 20px;
margin: 0;
}
main > * {
margin: 0;
}
.leftcol > * {
margin-bottom: 0px;
margin-top: 7px;
}
.scrollable {
overflow: scroll;
}
.flexcontainer {
display: flex;
flex-direction: row;
}
.leftcol {
flex: 400px;
}
.rightcol {
flex: 100%;
height: calc(100vh - 40px);
}
#colorpicker {
display: flex;
flex-direction: row;
}
.picking-area {
position: relative;
width: 200px;
height: 200px;
background: -webkit-linear-gradient(top, #00000000, #000 100%),
-webkit-linear-gradient(left, #fff, #ffffff00 100%), rgb(0, 85, 255);
margin-right: 20px;
border: 1px solid #888;
}
.picker {
position: absolute;
width: 8px;
height: 8px;
border: 1px solid #fff;
border-radius: 50%;
top: 52px;
left: 174px;
}
.picker::before {
width: 6px;
height: 6px;
position: absolute;
border: 1px solid #000;
}
.hue-picking-area {
position: relative;
width: 30px;
height: 200px;
background: -webkit-linear-gradient(top, #f00 0%, #ff0 16.67%, #0f0 33.33%, #0ff 50%, #00f 66.67%, #f0f 83.33%, #f00 100%);
border: 1px solid #888;
}
.hue-picker {
position: absolute;
width: 30px;
height: 2px;
background: #fff;
border: 1px solid #888;
top: 122px;
}
#colordisplay {
width: 100px;
margin-left: 40px;
height: 23px;
border: 1px solid #888;
background: rgb(20, 75, 184);
}

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{% set meta={"title": "Markov Word Gen", "desc": "Generate semi-random semi-pronouncable words using Markov chains"} %}
{% extends "/_base.html"%}
{% block head %}
<style>
body, p {
font-size: 13pt;
}
p.nospace {
line-height: 0.2;
}
div.results {
font-family: monospace;
}
</style>
<script src="main.js"></script>
<script src="markov.js"></script>
<script src="presets.js"></script>
{% endblock %}
{% block content %}
<p>Generates semi-random semi-pronouncable words using Markov chains. Press
"Run Markov Chain" to generate a word. Press "Analyze frequencies" to run the
chain many times and make a list of the output probabilities. Enter text in
the box to create a new Markov chain from the text
you entered.</p>
<textarea rows="4" cols="80" id="corpus" onchange="repopulate()"> </textarea>
<br>
Presets:
<select id="preset" onchange="preset()">
<option value="lipsum">Lorem Ipsum</option>
<option value="wikipedia">Wikipedia</option>
<option value="names">Names</option>
<option value="beemovie">Bee Movie</option>
<option value="astronomy">Astronomy</option>
</select>
<br>
<label for="min_length">Minimum length&nbsp;&nbsp;</label> <input type="number" id="min_length"
value="3" onchange="minmax()" min="0" max="50"><br>
<label for="max_length">Maximum length&nbsp;</label> <input type="number" id="max_length"
value="10" onchange="minmax()" min="0" max="50"><br>
<label for="markov_order">Markov order&nbsp;</label> <input type="number" id="markov_order"
value="1" onchange="setOrder()" min="1" max="4">
<p></p>
<button id="run" onclick="repeatRun(1)">Run Markov Chain</button>
<button id="run5" onclick="repeatRun(5)">Run 5 times</button>
<button id="run20" onclick="repeatRun(20)">Run 20 times</button>
<button id="analyze" onclick="analyze()">Analyze frequencies</button>
<p>Results:</p>
<div id="results" class="results"> </div>
{% endblock %}

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const SAMPLES = 500000;
const TRIES = 50000;
const FAILTEXT = 'Input conditions may be impossible: tried ' + TRIES + ' times and failed.';
var minLength = 3;
var maxLength = 10;
var order = 1;
window.onload = function() {
repopulate();
}
function repeatRun(times) {
document.getElementById('results').innerHTML = '';
for(var i = 0; i < times; i++) {
var word = getGoodChainOutput();
if(word == null) {
document.getElementById('results').innerHTML = FAILTEXT;
return;
}
var p = document.createElement("P");
p.className = "nospace";
p.innerHTML = word;
document.getElementById('results').appendChild(p);
}
}
function repeatRunReturn(times) {
var ret = [];
for(var i = 0; i < times; i++) {
var ch = getGoodChainOutput();
if(ch == null) return null;
ret.push(ch);
}
return ret;
}
function getGoodChainOutput() {
var word = runChain();
var i = 0;
while(word.length < minLength || word.length > maxLength) {
word = runChain();
i++
if(i > 5000) return null;
}
return word;
}
function analyze() {
document.getElementById('results').innerHTML = 'Analyzing...';
setTimeout(doAnalyze);
}
function doAnalyze() {
var run = repeatRunReturn(SAMPLES);
if(run == null) {
document.getElementById('results').innerHTML = FAILTEXT;
}
var results = {};
for(var i = 0; i < run.length; i++) {
var w = run[i];
if(results[w] != undefined) results[w] += 1;
else results[w] = 1;
}
var sorted = Object.keys(results).sort(function(a, b) {return results[b]-results[a]});
sorted.splice(50);
var final = '';
for(var i = 0; i < sorted.length; i++) {
final += sorted[i];
var ns = Math.ceil((maxLength+1)/2) - sorted[i].length + 1;
for(var i = 0; i < ns; i++) { final += '&nbsp;'; }
final += '(' + format(Math.round(10000*results[sorted[i]]/SAMPLES)/100, 1, 2) + '%)';
final += '<br>';
}
document.getElementById('results').innerHTML = final;
}
function format(number, wholeDigits, decimalDigits) {
var nstr = String(number);
var parts = nstr.split('.');
var whole = parts[0], decimal = parts[1];
while(whole != null && whole.length < wholeDigits) {
whole = '0' + whole;
}
while(decimal != null && decimal.length < decimalDigits) {
decimal += '0';
}
if(whole == undefined) whole = 0;
if(decimal == undefined) decimal = 0;
return whole + '.' + decimal;
}
function repopulate() {
var corpus = document.getElementById('corpus').value;
populateChain(corpus);
}
function minmax() {
minLength = document.getElementById('min_length').value;
maxLength = document.getElementById('max_length').value;
}
function setOrder() {
order = document.getElementById('markov_order').value;
repopulate();
}
function preset() {
document.getElementById('corpus').value = presets[document.getElementById('preset').value];
repopulate();
}

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var chain = {
'!':[]
}
function runChain() {
var index = '!';
var word = '';
while(index != '') {
var exits = chain[index];
var next = exits[Math.floor(Math.random() * exits.length)];
if(next == '') break;
if(order == 1)
index = next;
else
index = index.slice(-order+1) + next;
word += next;
}
return word;
}
function populateChain(corpus) {
chain = {'!':[]};
corpus = corpus.replace(/[^A-Za-z\s]|_/g, '').replace(/\s+/g, ' ').trim().toLowerCase();
corpus = ' ' + corpus + ' ';
for(var i = 1; i < corpus.length; i++) {
var cur = corpus[i];
var prev = '';
for(var j = 0; j < order; j++) {
if(corpus[i-1-j] == ' ') {
prev = '!' + prev;
break;
}
prev = corpus[i-1-j] + prev;
}
if(cur == ' ') cur = '';
if(chain[prev] == undefined) chain[prev] = [];
chain[prev].push(cur);
}
console.log(chain);
}

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function compressMaze(maze) {
if(maze == undefined) return undefined;
if(maze.length == 0) return [0, 0];
var a = [];
var x, y, i;
for(x = 0; x < maze.length; x++) {
for(y = 0; y < maze[x].length; y++) {
a.push(maze[x][y][0]);
a.push(maze[x][y][1]);
a.push(maze[x][y][2]);
a.push(maze[x][y][3]);
}
}
return a;
}
function expandMaze(maze, w, h) {
if(maze == undefined) return undefined;
if(w == 0 || h == 0) return [];
var a = [];
for(x = 0; x < w; x++) {
a.push([]);
for(y = 0; y < h; y++) {
a[x][y] = [];
var index = 4*(y + x*h)
a[x][y].push(maze[index+0]);
a[x][y].push(maze[index+1]);
a[x][y].push(maze[index+2]);
a[x][y].push(maze[index+3]);
}
}
return a;
}
var b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_';
function arrToB64(arr) {
while(arr.length%6 != 0) {
arr.push(false);
}
var str = '';
while(arr.length > 0) {
var n = arr.shift()*32+arr.shift()*16+arr.shift()*8+arr.shift()*4+arr.shift()*2+arr.shift();
str += b64[n];
}
return str;
}
function b64ToArr(str64) {
var arr = [];
for(var i = 0; i < str64.length; i++) {
var index = b64.indexOf(str64[i]);
if(index<0) continue;
arr.push((index>>5)%2 != 0);
arr.push((index>>4)%2 != 0);
arr.push((index>>3)%2 != 0);
arr.push((index>>2)%2 != 0);
arr.push((index>>1)%2 != 0);
arr.push((index>>0)%2 != 0);
}
return arr;
}
function encode(maze) {
return arrToB64(compressMaze(maze));
}
function decode(code, w, h) {
return expandMaze(b64ToArr(code), w, h);
}

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function elem(id) {return document.getElementById(id);}
function updateFG() {
var select = elem('selectfg');
elem('colorfg').value = select.options[select.selectedIndex].value;
var evt = new Event('change');
elem('colorfg').dispatchEvent(evt)
}
function updateBG() {
var select = elem('selectbg');
elem('colorbg').value = select.options[select.selectedIndex].value;
var evt = new Event('change');
elem('colorbg').dispatchEvent(evt)
}
var options = [
['Black', '0, 0, 0'],
['White', '255, 255, 255'],
['Light Gray', '200, 200, 208'],
['Gray', '150, 150, 158'],
['Dark Gray', '100, 100, 108'],
['Pink', '240, 100, 200'],
['Red', '200, 20, 10'],
['Orange', '250, 100, 10'],
['Yellow', '250, 255, 30'],
['Light Green', '140, 255, 90'],
['Green', '0, 180, 10'],
['Cyan', '30, 240, 250'],
['Light Blue', '140, 160, 255'],
['Blue', '20, 20, 240'],
['Purple', '100, 10, 130'],
['Brown', '90, 45, 20'],
]
function setupSelects() {
var sfg = elem('selectfg');
var sbg = elem('selectbg');
for(var i = 0; i < options.length; i++) {
var option = document.createElement('option');
option.text = options[i][0];
option.value = options[i][1];
sfg.add(option);
option = document.createElement('option');
option.text = options[i][0];
option.value = options[i][1];
sbg.add(option);
}
sfg.options[0].selected = 'selected';
sbg.options[1].selected = 'selected';
}
function newMaze() {
canvasWidth = elem('width').value;
canvasHeight = elem('height').value;
resizeCanvas(canvasWidth, canvasHeight);
mazeWidth = elem('maze-width').value;
mazeHeight = elem('maze-height').value;
shiftpop = elem('shiftpop').value/100;
var selectBias = elem('bias');
bias = selectBias.options[selectBias.selectedIndex].value;
frameRate(int(elem('speed').value));
resetMaze();
loop();
}
function getPermalinkURL() {
var url = location.href;
if(url.endsWith('index.html')) url = url.substring(0, url.length-'index.html'.length);
url += 'v/?';
var w = canvasWidth, h = canvasHeight, mw = mazeWidth, mh = mazeHeight;
var fg = red(colorfg)+'_'+green(colorfg)+'_'+blue(colorfg);
var bg = red(colorbg)+'_'+green(colorbg)+'_'+blue(colorbg);
var wte = borderWeight;
var code = encode(cells);
url += 'w='+w+'&h='+h+'&mw='+mw+'&mh='+mh+'&fg='+fg+'&bg='+bg+'&wte='+wte+'&code='+code;
return url;
}
function prop(from) {
if(elem('proportional').checked) {
var setW = elem('width').value,
setH = elem('height').value,
setMW = elem('maze-width').value,
setMH = elem('maze-height').value;
console.log(setW, setH, setMW, setMH, from);
switch(from) {
case 'w':
elem('height').value = round(setMH/setMW*setW);
break;
case 'h':
elem('width').value = round(setMW/setMH*setH);
break;
case 'mw':
elem('width').value = round(setMW/setMH*setH);
break;
case 'mh':
elem('height').value = round(setMH/setMW*setW);
break;
}
}
}

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{% set meta={"title": "Maze maker", "desc": "Generate mazes", "pagewidth": "1400px"} %}
{% extends "/_base.html"%}
{% block head %}
<style>
.side { padding-left: 20px; float: left; }
</style>
<script src="https://cdn.jsdelivr.net/npm/p5@1.4.0/lib/p5.js"></script>
<script src="dom.js"></script>
<script src="main.js"></script>
<script src="bool-x-64.js"></script>
{% endblock %}
{% block content %}
<div id="canvas-wrapper" style="float: left;"></div>
<div class="side">
Maze width (pixels): <input type="number" id="width" value="720" onchange="prop('w');"><br>
Maze height (pixels): <input type="number" id="height" value="720" onchange="prop('h');"><br>
Cells wide: <input type="number" id="maze-width" value="18" onchange="prop('mw');"><br>
Cells high: <input type="number" id="maze-height" value="18" onchange="prop('mh');"><br>
Proportional: <input type="checkbox" id="proportional"><br>
Chance to shift instead of pop: <input type="text" id="shiftpop" value="0">%<br>
Bias: <select id="bias">
<option value="0" selected>No bias</option>
<option value="1">Horizontal</option>
<option value="-1">Vertical</option>
</select><br>
<input type="button" id="new-maze" value="New Maze" onclick="newMaze();"><br><br>
Foreground color: <select id="selectfg" onchange="updateFG()"></select>
<input type="text" id="colorfg" value="0, 0, 0"
onchange="colorfg = color(elem('colorfg').value.split(', ')); redraw();"><br>
Background color: <select id="selectbg" onchange="updateBG()"></select>
<input type="text" id="colorbg" value="255, 255, 255"
onchange="colorbg = color(elem('colorbg').value.split(', ')); redraw();"><br>
Border weight: <input type="number" id="bwait" value="2"
onchange="borderWeight = elem('bwait').value; redraw();"><br><br>
Speed (fps): <input type="number" id="speed" value="30">
<input type="button" id="set-speed" value="Set Speed"
onclick="frameRate(int(elem('speed').value));"><br>
Show current cell: <input type="checkbox" id="current" checked
onclick="showCurrent = elem('current').checked;"><br>
Show colored overlay: <input type="checkbox" id="overlay" checked
onclick="showOverlay = elem('overlay').checked;"><br><br>
<input type="button" value="Open permalink"
onclick="window.open(getPermalinkURL());"><br><br>
<div id="status">Generating...</div>
</div>
{% endblock %}

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p5.disableFriendlyErrors = true;
var canvasWidth = 720;
var canvasHeight = 720;
var mazeWidth = 18, mazeHeight = 18;
var shiftpop = 0;
var colorfg, colorbg, borderWeight;
var showOverlay = true;
var showCurrent = true;
var canvas;
// 3d array, cells[x][y] = [top wall, right wall, bottom wall, left wall, available, in stack]
var cells;
var stack;
var cx, cy;
var done;
var bias = 0;
function setup() {
canvas = createCanvas(canvasWidth+0.5, canvasHeight+0.5);
canvas.parent('canvas-wrapper');
canvas.id('maze-canvas');
setupSelects();
colorfg = color(0);
colorbg = color(255);
borderWeight = 2;
resetMaze();
frameRate(30);
}
function resetMaze() {
background(colorbg);
cells = []; stack = []; done = false;
for(var x = 0; x < mazeWidth; x++) {
cells.push([]);
for(var y = 0; y < mazeHeight; y++) {
cells[x][y] = [true, true, true, true, true, false];
}
}
cx = floor(random(mazeWidth));
cy = floor(random(mazeHeight));
cells[cx][cy][4] = false;
elem('status').innerHTML = 'Generating...';
}
function draw() {
background(colorbg);
drawCells();
chooseNextCell();
}
function drawCells() {
stroke(colorfg);
strokeWeight(borderWeight);
var cw = canvasWidth/mazeWidth;
var ch = canvasHeight/mazeHeight;
var x, y, c
// Show overlay
if(!done && showOverlay) {
noStroke();
for(x = 0; x < mazeWidth; x++) {
for(y = 0; y < mazeHeight; y++) {
c = cells[x][y];
// Fill with blue if visited & on stack
if(!c[4] && c[5])
{fill( 99, 99, 255); rect(x*cw, y*ch, cw, ch);}
// Fill with light blue if visited but not on stack
if(!c[4] && !c[5])
{fill(150, 180, 255); rect(x*cw, y*ch, cw, ch);}
}
}
stroke(colorfg);
}
if(!done && showCurrent) {
noStroke();
var d = false;
var x, y;
for(x = 0; x < mazeWidth; x++) {
for(y = 0; y < mazeHeight; y++) {
// Fill with green if current cell
if(cx == x && cy == y)
{fill(0, 230, 50); rect(x*cw, y*ch, cw, ch); d=true; break; }
}
if(d) break;
}
stroke(colorfg);
}
for(x = 0; x < mazeWidth; x++) {
for(y = 0; y < mazeHeight; y++) {
c = cells[x][y];
if(c[0]) line(x*cw, y*ch, x*cw+cw, y*ch);
if(c[1]) line(x*cw+cw, y*ch, x*cw+cw, y*ch+ch);
if(c[2]) line(x*cw, y*ch+ch, x*cw+cw, y*ch+ch);
if(c[3]) line(x*cw, y*ch, x*cw, y*ch+ch);
}
}
if(done) noLoop();
}
function chooseNextCell() {
var choices = [];
// Check left, right, up, and down
if(cells[cx-1] && cells[cx-1][cy] && cells[cx-1][cy][4]) {
choices.push([cx-1, cy, 3]);
if(bias > 0) {choices.push([cx-1, cy, 3]); choices.push([cx-1, cy, 3]);}
}
if(cells[cx+1] && cells[cx+1][cy] && cells[cx+1][cy][4]) {
choices.push([cx+1, cy, 1]);
if(bias > 0) {choices.push([cx+1, cy, 1]); choices.push([cx+1, cy, 1]);}
}
if(cells[cx] && cells[cx][cy-1] && cells[cx][cy-1][4]) {
choices.push([cx, cy-1, 0]);
if(bias < 0) {choices.push([cx, cy-1, 0]); choices.push([cx, cy-1, 0]);}
}
if(cells[cx] && cells[cx][cy+1] && cells[cx][cy+1][4]) {
choices.push([cx, cy+1, 2]);
if(bias < 0) {choices.push([cx, cy+1, 2]); choices.push([cx, cy+1, 2]);}
}
if(choices.length > 0){
// Push current cell to stack
stack.push([cx, cy]);
cells[cx][cy][5] = true;
// Choose randomly if choices
var choice = random(choices);
// Remove wall
cells[cx][cy][choice[2]] = false;
// Move to new cell
cx = choice[0];
cy = choice[1];
// Remove wall
cells[cx][cy][(choice[2]+2)%4] = false;
// Mark cell as visited
cells[cx][cy][4] = false;
} else if(stack.length > 0) {
// Otherwise, pop the stack
var n;
if(shiftpop == 0)
n = stack.pop();
else if(shiftpop == 1)
n = stack.shift();
else {
var rand = random();
if(rand > shiftpop)
n = stack.pop();
else
n = stack.shift();
}
cx = n[0];
cy = n[1];
cells[cx][cy][5] = false;
} else {
// If stack is empty, we're done
done = true;
elem('status').innerHTML = 'Done!';
}
}

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{% set meta={"title": "Maze Permalink", "desc": "", "hidden": True} %}
{% extends "/_base.html" %}
{% block head %}
<script src="https://cdn.jsdelivr.net/npm/p5@1.4.0/lib/p5.js"></script>
<script src="main.js"></script>
<script src="../bool-x-64.js"></script>
{% endblock %}
{% block content %}
<div id="center">
<div id="canvas-wrapper"></div>
</div>
{% endblock %}

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//p5.disableFriendlyErrors = true;
var w, h, mw, mh, cells, fg, bg, wte;
function setup() {
getData();
canvas = createCanvas(w+0.5, h+0.5);
canvas.parent('canvas-wrapper');
canvas.id('maze-canvas');
noLoop();
redraw();
}
function draw() {
var cw = w/mw, ch = h/mh;
background(bg);
stroke(fg);
strokeWeight(wte);
for(x = 0; x < cells.length; x++) {
for(y = 0; y < cells[x].length; y++) {
c = cells[x][y];
if(c[0]) line(x*cw, y*ch, x*cw+cw, y*ch);
if(c[1]) line(x*cw+cw, y*ch, x*cw+cw, y*ch+ch);
if(c[2]) line(x*cw, y*ch+ch, x*cw+cw, y*ch+ch);
if(c[3]) line(x*cw, y*ch, x*cw, y*ch+ch);
}
}
}
function getData() {
w = int(query('w'));
h = int(query('h'));
mw = int(query('mw'));
mh = int(query('mh'));
fg = color('rgb('+query('fg').replace(/_/g, ', ')+')');
bg = color('rgb('+query('bg').replace(/_/g, ', ')+')');
wte = int(query('wte'));
cells = decode(query('code'), mw, mh);
}
function query(key) {
key = key.replace(/[*+?^$.\[\]{}()|\\\/]/g, "\\$&"); // escape RegEx meta chars
var match = location.search.match(new RegExp("[?&]"+key+"=([^&]+)(&|$)"));
return match && decodeURIComponent(match[1].replace(/\+/g, " "));
}

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{% set meta={"title": "Number", "desc": "make go up"} %}
{% extends "/_base.html"%}
{% block head%}
<script>
window.onload = () => {
var xhr = new XMLHttpRequest();
xhr.open("GET", "https://api.trimill.xyz/number");
xhr.send();
xhr.onload = () => {
document.getElementById("number").innerHTML = xhr.responseText;
}
xhr.onerror = () => {
document.getElementById("number").innerHTML = "Error loading number."
}
}
function makegoup() {
var xhr = new XMLHttpRequest();
xhr.open("POST", "https://api.trimill.xyz/number");
xhr.send();
xhr.onload = () => {
document.getElementById("number").innerHTML = xhr.responseText;
}
}
</script>
{% endblock %}
{% block content%}
<div id="number">?</div>
<div>
<input type="button" value="Make go up" id="button" onclick="makegoup();" />
</div>
{% endblock %}

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{% set meta={"title": "Pixel Circle", "desc": "Generate circles for games like Minecraft"} %}
{% extends "/_base.html" %}
{% block head %}
<script src="https://cdn.jsdelivr.net/npm/p5@1.4.0/lib/p5.js"></script>
<script src="main.js"></script>
{% endblock %}
{% block content %}
<div>
Radius:
<input type="range" min="0" max="100" value="5" style="width: 25%" id="radius-slider" oninput="updateRadius(this.value)" width="1000px" step="0.1">
<input type="text" id="radius-text" oninput="updateRadius(this.value);" value="5">
</div>
<div>
<input type="checkbox" id="even-center" oninput="updateCenter(this.checked);"> Even center?
</div>
<div>
Accuracy (increase for large circles):
<input type="text" id="accuracy" oninput="updateAccuracy(this.value);" value="8000">
</div>
<div id="canvas-wrapper"></div>
<div>
<input type="button" id="reset" onclick="resetMotion();" value="Reset motion">
</div>
<script>
document.getElementById("defaultCanvas0").onwheel = function(event){
event.preventDefault();
};
document.getElementById( "canvasId" ).onmousewheel = function(event){
event.preventDefault();
};
</script>
{% endblock %}

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// Cell size; the width/height of each pixel
var cs = 30;
// The zoom level
var zoom = 0;
// The list of pixels to shade
var pix = [];
// The x and y offsets
var xoff, yoff;
// If the canvas or circle need updating
var updateCanvas = true;
var updateCircle = true;
// The circle's radius
var rad = 5.1;
// The accuracy of the circle
var steps = 8000;
// The cell size below which the grid is not drawn
var gridShow = 10;
// Whether or not the center is even
var evenCenter = false;
// Theme colors
var BACKGR, FOREGR, COLOR;
//Create the canvas, initialize the input fields, and set the theme colors.
function setup() {
var canvas = createCanvas(900, 675);
canvas.parent('canvas-wrapper');
document.getElementById('radius-slider').value = rad;
document.getElementById('radius-text').value = rad;
document.getElementById('even-center').value = evenCenter;
document.getElementById('accuracy').value = steps;
xoff = width / 2 - cs / 2;
yoff = height / 2 - cs / 2;
resetPix();
BACKGR = color(220);
FOREGR = color(100);
COLOR = color(30, 160, 60);
document.getElementById("defaultCanvas0").onwheel = function (event) {
event.preventDefault();
};
document.getElementById("defaultCanvas0").onmousewheel = function (event) {
event.preventDefault();
};
}
//Delete the old circle and create the highlighted center
function resetPix() {
pix = [];
pix.push({ x: 0, y: 0, c: COLOR });
if (evenCenter) {
pix.push({ x: 0, y: 1, c: COLOR });
pix.push({ x: 1, y: 0, c: COLOR });
pix.push({ x: 1, y: 1, c: COLOR });
}
}
//When an update occurs, redraw the canvas on the next frame.
function draw() {
if (updateCanvas || updateCircle) {
background(BACKGR);
// If only the canvas is updated, the circle doesn't need to be retraced.
if (updateCircle) {
resetPix();
// Slightly decrease the radius in certian cases to prevent glitches.
var r = rad;
if (!evenCenter && abs(round(r) - r) == 0.5)
r -= 0.00000001;
else if (evenCenter && round(r) - r == 0)
r -= 0.00000001;
// Trace the circle to find which pixels are inside it.
traceCircle(r);
}
// Draw the colored pixels to the screen.
drawPix();
stroke(0);
strokeWeight(1);
// If not zoomed out too far, draw the grid.
if (cs > gridShow)
drawGrid(xoff, yoff, cs);
// Draw the highlighted circle path.
drawCirclePath()
// Do not update again immediately after this.
updateCircle = false;
updateCanvas = false;
}
}
//Draw the grid of horsizontal and veritcal lines.
function drawGrid(xoff, yoff, gap) {
for (var x = xoff % gap; x < width; x += gap) {
line(x, 0, x, height);
}
for (var y = yoff % gap; y < height; y += gap) {
line(0, y, width, y);
}
}
var lastX, lastY;
//Start the drag.
function mousePressed() {
lastX = mouseX;
lastY = mouseY;
}
//Move the image around when dragged.
function mouseDragged() {
if (mouseX > 0 && mouseY > 0) {
xoff += mouseX - lastX;
yoff += mouseY - lastY;
lastX = mouseX;
lastY = mouseY;
updateCanvas = true;
}
}
//Zoom in and out by scrolling.
function mouseWheel(event) {
if(mouseX >= 0 && mouseX < width && mouseY >= 0 && mouseY < height) {
var c = event.delta;
var f = (c > 0) ? 8 / 9 : (c < 0) ? 9 / 8 : 1;
cs *= f;
xoff = (xoff - mouseX) * f + mouseX;
yoff = (yoff - mouseY) * f + mouseY;
updateCanvas = true;
}
}
//Find which pixels are in the path of the circle by tracing it.
function traceCircle(r) {
var lx, ly;
var cx = 0, cy = 0;
if (evenCenter) { cx = 0.5; cy = 0.5; }
// Go around the circle in <steps> number of steps
for (var ang = 0; ang < 1; ang += 1 / steps) {
var x = round(r * cos(ang * TAU) + cx);
var y = round(r * sin(ang * TAU) + cy);
// If the location is different from the previous one...
if (x != lx || y != ly) {
// ...create a shaded pixel at the location
var obj = { x: x, y: y, c: color(FOREGR) };
pix.push(obj);
lx = x;
ly = y;
}
}
}
// Draw the colored pixels to the screen
function drawPix() {
noStroke()
for (var i = 0; i < pix.length; i++) {
fill(pix[i].c);
rect(pix[i].x * cs + xoff, pix[i].y * cs + yoff, cs, cs);
}
}
// Draw the colored circle path
function drawCirclePath() {
noFill();
// Choose stroke weight based on zoom level
if (cs > 20) strokeWeight(2.5);
else if (cs > gridShow) strokeWeight(1.5);
else strokeWeight(1);
var cx = 0, cy = 0;
if (evenCenter) { cx = 0.5; cy = 0.5; }
stroke(COLOR);
ellipse(xoff + cx * cs + cs / 2, yoff + cy * cs + cs / 2, 2 * rad * cs, 2 * rad * cs);
}
// Change the radius of the circle
function updateRadius(value) {
// Make sure the slider and text field match.
document.getElementById('radius-slider').value = value;
document.getElementById('radius-text').value = value;
rad = value;
updateCircle = true;
}
// Change the accuracy.
function updateAccuracy(value) {
if (value != 0) {
steps = +value;
updateCircle = true;
}
}
// Change the center between odd (one pixel) and even (four pixels).
function updateCenter(value) {
old = evenCenter
if (old == true && value == false) {
xoff += 0.5 * cs;
yoff += 0.5 * cs;
} else if (old == false && value == true) {
xoff -= 0.5 * cs;
yoff -= 0.5 * cs;
}
evenCenter = value;
updateCircle = true;
}
// Reset drag and zoom.
function resetMotion() {
zoom = 0;
cs = 60;
xoff = width / 2 - cs / 2;
yoff = height / 2 - cs / 2;
updateCircle = true;
}

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{% set meta={"title": "Rock Paper SHAssors", "desc": "Rock paper scissors with arbitrary strings"} %}
{% extends "/_base.html"%}
{% block head%}
<script>
let home, game, winscreen, error;
let create, joincodeInput, join;
let joincodeOutput, divMove, move, waitingForOpponent, divSubmit, submit, submitted, opponentSubmitted;
let win, lose, tie, winresponse, loseresponse, winlose, tieresp, tieresponse, reset;
let ws;
let token;
function onCreate() {
ws.send(JSON.stringify({ty:"create"}));
}
function onJoin() {
const joincode = joincodeInput.value;
ws.send(JSON.stringify({ty:"join",code:joincode}));
}
function onSubmit() {
const str = move.value;
ws.send(JSON.stringify({ty:"submit",token:token,str:str}));
}
function onReset() {
ws.send(JSON.stringify({ty:"reset",token:token}));
}
function onMessage(event) {
const packet = JSON.parse(event.data);
console.log(packet);
if(packet.ty === "joined") {
error.textContent = "";
token = packet.token;
home.hidden = true;
game.hidden = false;
winscreen.hidden = true;
move.value = "";
} else if(packet.ty === "status") {
joincodeOutput.textContent = packet.joincode;
if(packet.player.submitted) {
submitted.hidden = false;
divSubmit.hidden = true;
divMove.hidden = true;
} else {
submitted.hidden = true;
divMove.hidden = false;
if(packet.opponent.connected) {
divSubmit.hidden = false;
} else {
divSubmit.hidden = true;
}
}
if(packet.opponent.connected) {
waitingForOpponent.hidden = true;
} else {
waitingForOpponent.hidden = false;
}
if(packet.opponent.submitted) {
opponentSubmitted.hidden = false;
} else {
opponentSubmitted.hidden = true;
}
} else if(packet.ty === "win") {
error.textContent = "";
home.hidden = true;
game.hidden = true;
winscreen.hidden = false;
win.hidden = true;
lose.hidden = true;
tie.hidden = true;
if(packet.win === "tie") {
winloseresp.hidden = true;
tieresp.hidden = false;
tie.hidden = false;
tieresponse.textContent = packet.response;
} else {
winloseresp.hidden = false;
tieresp.hidden = true;
if(packet.win === true) {
win.hidden = false;
} else if(packet.win === false) {
lose.hidden = false;
}
winresponse.textContent = packet.winresponse;
loseresponse.textContent = packet.loseresponse;
}
} else if(packet.ty === "reset") {
error.textContent = "";
home.hidden = true;
game.hidden = false;
winscreen.hidden = true;
move.value = "";
} else if(packet.ty === "error") {
error.textContent = packet.msg;
}
}
window.onload = () => {
ws = new WebSocket("wss://api.trimill.xyz/rpsha");
//ws = new WebSocket("wss://localhost:12421");
ws.addEventListener("message", onMessage);
home = document.getElementById("home");
game = document.getElementById("game");
winscreen = document.getElementById("winscreen");
error = document.getElementById("error");
create = document.getElementById("create");
joincodeInput = document.getElementById("joincode-input");
join = document.getElementById("join");
joincodeOutput = document.getElementById("joincode-output");
divMove = document.getElementById("div-move");
move = document.getElementById("move");
waitingForOpponent = document.getElementById("waiting-for-opponent");
divSubmit = document.getElementById("div-submit");
submit = document.getElementById("submit");
submitted = document.getElementById("submitted");
opponentSubmitted = document.getElementById("opponent-submitted");
win = document.getElementById("win");
lose = document.getElementById("lose");
tie = document.getElementById("tie");
winloseresp = document.getElementById("winloseresp");
winresponse = document.getElementById("winresponse");
loseresponse = document.getElementById("loseresponse");
tieresp = document.getElementById("tieresp");
tieresponse = document.getElementById("tieresponse");
reset = document.getElementById("reset");
create.onclick = onCreate;
join.onclick = onJoin;
submit.onclick = onSubmit;
reset.onclick = onReset;
};
</script>
{% endblock %}
{% block content %}
<div id="home">
<p>Free yourself from the confines of the ternary.</p>
<div><input type="button" value="Create game" id="create" /></div>
<div><input type="text" id="joincode-input" /><input type="button" value="Join game" id="join" /></div>
</div>
<div id="game" hidden>
<div>Join code: <code id="joincode-output"></code></div>
<div id="div-move">Your move: <input type="text" id="move" /> (enter anything)</div>
<div id="waiting-for-opponent">Waiting for opponent...</div>
<div id="div-submit" hidden><input type="button" value="Submit" id="submit" /></div>
<div id="submitted" hidden>Submitted.</div>
<div id="opponent-submitted" hidden>Opponent submitted.</div>
</div>
<div id="winscreen" hidden>
<div id="win" hidden>You won!</div>
<div id="lose" hidden>You lost!</div>
<div id="tie" hidden>You tied!</div>
<div id="winloseresp">"<span id="winresponse"></span>" beats "<span id="loseresponse"></span>"</div>
<div id="tieresp">You both entered "<span id="tieresponse"></span>"</div>
<input type="button" value="Reset" id="reset" />
</div>
<div id="error" class="error"></div>
{% endblock %}

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{% set meta={"title": "Star maker", "desc": "Generate stars"} %}
{% extends "/_base.html"%}
{% block head %}
<script src="https://cdn.jsdelivr.net/npm/p5@1.4.0/lib/p5.js"></script>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"
integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
crossorigin="anonymous">
</script>
<script src="main.js"></script>
{% endblock %}
{% block content %}
<div>
Points:
<input type="text" id="points" value="8">
Jump:
<input type="text" id="jump" value="3">
Use colors:
<input type="checkbox" id="colors">
</div>
<div id="canvas-wrapper"> </div>
{% endblock %}

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var p = 8, q = 3, useCols = false;
var colors;
function setup() {
var canvas = createCanvas(600, 600);
canvas.parent("canvas-wrapper");
frameRate(5);
colors = [color(0), color(220, 20, 0), color(10, 200, 30), color(20, 40, 240), color(30, 180, 240), color(230, 210, 50), color(150, 50, 150), color(240, 120, 20), color(150, 150, 150), color(150, 100, 50)];
}
function draw() {
push();
background(240);
translate(width/2, height/2);
rotate(-TAU/4);
noFill(0, 10)
strokeWeight(2);
drawStar();
pop();
}
function drawStar() {
var iterations = gcd(p, q);
for(var i = 0; i < iterations; i++) {
if(useCols)
stroke(colors[i%colors.length]);
beginShape();
for(var j = 0; j < p/iterations; j++) {
var point = getPoint(p, j*q+i, width/2-20);
vertex(point.x, point.y);
}
endShape(CLOSE);
}
}
function getPoint(count, index, r) {
var x = r * Math.cos((TAU*index)/count);
var y = r * Math.sin((TAU*index)/count);
return createVector(x, y);
}
$(()=>{
$("#points").change(update);
$("#jump").change(update);
$("#colors").change(update);
update();
})
function update() {
p = +$("#points").val();
q = +$("#jump").val();
useCols = $("#colors").prop("checked");
draw();
}
function gcd(a,b) {return (!b)?a:gcd(b,a%b);}

103
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{% set meta={"title": "Tagpost", "desc": "The next great social media platform"} %}
{% extends "/_base.html" %}
{% block head%}
<script>
const e_content = document.getElementById("content");
const e_tagname = document.getElementById("tagname");
const e_edittime = document.getElementById("edittime");
const e_introtext = document.getElementById("introtext");
const e_errortext = document.getElementById("errortext");
const e_charcount = document.getElementById("charcount");
e_content.addEventListener("input", contentInput);
async function contentInput() {
e_charcount.textContent = e_content.value.length;
}
async function go() {
const tag = document.getElementById("taginput").value;
try {
const data = await loadtag(tag);
window.tag = tag;
document.getElementById("tagname").textContent = tag;
if(data.found) {
document.getElementById("content").value = data.post.contents;
date = new Date(data.post.time)
document.getElementById("edittime").textContent = "Last modified " + (date.toLocaleString());
} else {
document.getElementById("content").value = "";
document.getElementById("edittime").textContent = "Never modified before";
}
document.getElementById("introtext").hidden = true;
document.getElementById("errortext").hidden = true;
document.getElementById("ui").hidden = false;
} catch(e) {
document.getElementById("errortext").textContent = "Error: " + e.toString();
document.getElementById("errortext").hidden = false;
document.getElementById("ui").hidden = true;
}
contentInput();
}
async function save() {
const data = document.getElementById("content").value;
let res;
try {
res = await savetag(window.tag, data);
} catch(e) {
document.getElementById("errortext").textContent = "Error: " + e.toString();
document.getElementById("errortext").hidden = false;
return;
}
if(res.ok) {
document.getElementById("errortext").hidden = true;
// TODO visual success
} else {
const text = await res.text();
document.getElementById("errortext").textContent = "Error: " + text;
document.getElementById("errortext").hidden = false;
}
}
async function loadtag(tag) {
if(typeof(tag) !== "string" || tag.match(/^[a-z]{4}$/) === null) {
throw "Invalid tag";
}
const url = "https://api.trimill.xyz/tagpost?tag=" + tag;
//const url = "https://localhost:12321/tagpost?tag=" + tag;
const res = await fetch(url);
return await res.json();
}
async function savetag(tag, data) {
if(typeof(tag) !== "string" || typeof(data) !== "string" || tag.match(/^[a-z]{4}$/) === null || data.length > 128) {
throw "Invalid tag or data";
}
const url = "https://api.trimill.xyz/tagpost?tag=" + tag;
//const url = "https://localhost:12321/tagpost?tag=" + tag;
return await fetch(url, {
method: "POST",
headers: {"Content-Type": "application/json"},
body: JSON.stringify({post: data})
});
}
</script>
{% endblock %}
{% block content %}
<span><input type="text" id="taginput" /> <input type="button" id="searchbutton" value="Go" onclick="go();" /></span>
<p id="errortext" style="color: #cc5c5c;" hidden>Error:</p>
<p id="introtext">Enter any lowercase four-letter word (or not word) above and click "Go".</p>
<div id="ui" hidden>
<span>&gt; <span id="tagname"></span></span>
<div>
<textarea id="content" rows=5 cols=30></textarea>
<span><span id="charcount">0</span>/128</span>
</div>
<div>
<input type="button" id="submit" value="Save" onclick="save();" />
</div>
<div>
<span id="edittime"></span>
</div>
</div>
{% endblock %}

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---
layout: default
title: Whoami
description: List information that websites you visit can know about you
---
<h1>Whoami?</h1>
You are:<br>
<div id="results" style="font-family: 'Cousine';"></div><br>
<input type="button" id="location" value="View location data" onclick="requestLocation()"/><span id="lbr"><br><br></span>
Whoami uses <a href="https://github.com/faisalman/ua-parser-js">UAParser</a> to parse user-agent strings
<script src="https://code.jquery.com/jquery-3.6.0.min.js"
integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
crossorigin="anonymous">
</script>
<script src="main.js"></script>
<script src="ua-parser.js"></script>

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$(load);
let results = '';
function load() {
addEntry('User Agent', navigator.userAgent);
results += '<br>';
let ua = UAParser();
console.log(ua);
addEntry('Name', ua.browser.name);
addEntry('Version', ua.browser.version);
addEntry('CPU', ua.cpu.architecture);
addEntry('Engine Name', ua.engine.name);
addEntry('Engine Version', ua.engine.version);
addEntry('OS Name', ua.os.name);
addEntry('OS Version', ua.os.version);
results += '<br>';
addEntry('App Name', navigator.appName);
addEntry('Codename', navigator.appCodeName);
addEntry('Java Enabled', navigator.javaEnabled());
addEntry('Language', navigator.language);
addEntry('Languages', navigator.languages);
addEntry('Vendor', navigator.vendor);
addEntry('Cookies Enabled', navigator.cookieEnabled);
addEntry('Platform', navigator.platform);
addEntry('Query', (window.location.search.split('?')[1] || 'none').split('&'));
if(navigator.connection != null)
addEntry('Connection', navigator.connection.effectiveType);
results += '<br>';
if(navigator.getBattery)
navigator.getBattery().then(function(battery) {
addEntry('Battery Charge', battery.level*100+'%');
addEntry('Charging', battery.charging);
results += '<br>';
finalize();
});
finalize();
}
function addEntry(name, value) {
let z = '\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n';
value = (z+value).substring(name.length);
value = value.replace(/\n/g, '&nbsp;');
results += '<br>' + name + ':' + value;
}
function finalize() { $('#results').html(results); }
function requestLocation() {
navigator.geolocation.getCurrentPosition(function(location) {
console.log(location);
addEntry('Latitude', location.coords.latitude);
addEntry('Longitude', location.coords.longitude);
finalize();
}, function(err) {
addEntry('Location', 'Error - ' + err.message);
finalize();
});
$('#location').remove();
$('#lbr').remove();
}

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45
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{% set meta={"title": "zzcxz visualizer help", "desc": "Help for zzcxz visualizer", "hidden": True} %}
{% extends "/_base.html" %}
{% block head %}
<style>
h1 {
color: var(--fg);
}
.option, .option:hover, .option:active {
color: var(--fg);
text-decoration: underline;
}
.option:visited{
color: var(--fg-faded);
}
.cyan {
color: #0ff;
}
</style>
{% endblock %}
{% block content %}
<div class="wrapper">
<p>
each <span class="cyan">node</span> represents one zzcxz page. clicking on a node will load all of the pages it links to.
</p>
<p>
two nodes are connected with an <span class="cyan">arrow</span> if one of them links to the other. nodes and arrows colored <span class="cyan">blue</span> represent redirects. after a node has been clicked it will turn more <span class="cyan">gray</span> to indicate that all of its outgoing links have been loaded.
</p>
<p>
you may <span class="cyan">click and drag</span> on nodes to move them around, or on the page itself to pan. use the <span class="cyan">scroll wheel</span> to zoom.
</p>
<p>
the root node (by default, the zzcxz page itself) is colored <span class="cyan">green</span>.
</p>
<p>
click the double chevron link at the top-left corner to expand and collapse the <span class="cyan">user interface</span>. this allows you to load pages from their id, or to reset the graph completely. if you <span class="cyan">select</span> a node by right-clicking it, information about it will also show up here. deselect by pressing <span class="cyan">esc</span>.
</p>
<p>
if you append <span class="cyan">?skip</span> to the URL of the main page, it will bypass the spoiler warning.
</p>
<ul>
<li><a href="../zzcxz_vis" class="option">go back</a></li>
<li><a href="" class="option">do not go back</a></li>
</ul>
</div>
{% endblock %}

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{% set meta={"title": "zzcxz visualizer", "desc": "Visualize the structure of <a href=https://zzcxz.citrons.xyz/>zzcxz</a>"} %}
{% extends "/_base.html" %}
{% block head %}
<style>
main, #graph {
height: 100%;
}
main {
position: relative;
}
h1 {
color: var(--fg);
}
.option, .option:hover, .option:active {
color: var(--fg);
text-decoration: underline;
}
.option:visited{
color: var(--fg-faded);
}
.cyan {
color: #0ff;
}
.uielems {
position: absolute;
top: 20px;
left: 20px;
padding-right: 10px;
}
.border {
border-right: 1px solid var(--fg);
}
.bl {
display: block;
margin-top: 2px;
margin-bottom: 2px;
}
</style>
<script src="https://d3js.org/d3.v7.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/d3plus@2"></script>
<script src="index.js"></script>
{% endblock %}
{% block content %}
<div id="spoiler">
<p>
you are about to view a force directed graph of <span class="cyan">zzcxz</span>, a collaborative interactive fiction website by <span class="cyan">citrons</span>. this will contain <span class="cyan">spoilers</span> for zzcxz, so i strongly recommend you try it out before continuing. common side effects of continuing without using zzcxz first include intense guilt, deep regret, immediate apification, and feelings of worthlessness.
</p>
<p>
note: at time of writing (2022-06-23), zzcxz and all other citrons-created content is offline. zzcxz visualizer will not work until it is no longer offline.
</p>
<ul>
<li><a href="https://zzcxz.citrons.xyz/" class="option">visit zzcxz (recommended)</a></li>
<li><a href="https://citrons.xyz/" class="option">visit citrons' website</a></li>
<li><a href="help.html" class="option">view the help page</a></li>
<li><a href="javascript:void(0)" class="option" onclick="visualize()">continue to zzcxz visualizer</a></li>
</ul>
</div>
<div id="graph" style="width: 90vw;"></div>
<div class="uielems border" id="ui" hidden>
<div><a href="javascript:void(0)" id="contract-link">&lt;&lt;</a></div>
Load page:
<input type="text" style="width: 6ch" id="load-page" />
<input class="bl" type="button" value="Clear" id="clear-nodes" />
<input class="bl" type="button" value="Toggle labels" id="toggle-labels" />
<div id="selected-node" hidden>
<hr />
<div><b>Selected node</b></div>
<div><b>title:</b> <span id="selected-node-title"></span></div>
<div><b>id:</b> <span id="selected-node-id"></span></div>
<div><b>link:</b> <a id="selected-node-link" target="_blank">link</a></div>
</div>
</div>
<div class="uielems" id="uiexpand" hidden>
<a href="javascript:void(0)" id="expand-link">&gt;&gt;</a>
</div>
{% endblock %}

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const TAU = 6.283185307179586;
const radius = 25;
const radiusRedirect = 15;
const colorBackground = "var(--bg-intense)";
const colorNormal = "var(--fg)";
const colorRedirect = "#8af";
const colorDone = "var(--fg-faded)";
const colorRedirectDone = "#679";
const colorRoot = "#4a5";
const colorRootDone = "#484";
const alphaInit = 0.5;
const alphaTarget = 0.1;
const linkDistance = 150;
const linkStrength = 0.1;
let nodes = [];
let links = [];
let refresh;
let transform = {x: 0, y: 0, k: 1};
let selectedNode = null;
let showLabels = true;
function getColorFor(elem) {
if(elem.root) {
if(elem.done) { return colorRootDone; }
return colorRoot;
} else if(elem.type === "normal") {
if(elem.done) { return colorDone; }
return colorNormal;
} else if(elem.type === "redirect") {
if(elem.done) { return colorRedirectDone; }
return colorRedirect;
}
}
function getRadiusFor(elem) {
if(elem.type === "normal") {
return radius;
} else if(elem.type === "redirect") {
return radiusRedirect;
}
}
// Fetch and parse a zzcxz page
async function loadPage(id) {
const url = "https://zzcxz.citrons.xyz/g/" + id + "/raw";
console.log("fetching id " + id);
return fetch(url).then(x => x.text()).then(text => {
let pageType = "normal";
const directive = text.match(/^\t#([A-Za-z]+)\s*(.*)\n?$/m);
const title = text.match(/^.+\n/m)[0];
const links = (text.match(/^[a-z]{5}:.*\n/gm) || [])
.map(line => {
return {"to": line.trim().split(":")[0], "type": "normal"};
});
if(directive) {
const kind = directive[1];
const arg = directive[2];
if(kind.toLowerCase() === "redirect") {
pageType= "redirect";
links.push({"to":arg,"type":"redirect"});
} else {
throw "Unsupported directive: #" + kind
}
}
return {
"id": id,
"type": pageType,
"title": title,
"links": links,
};
});
}
// Add a page to the network (nodes and links lists (not linked lists (at least i think not (i do not know how js lists are implemented))))
function addPage(id, x, y, root) {
loadPage(id).then(page => {
if(nodes.map(node => node.id).includes(page.id)) {
return;
}
let newLinks = [];
for(node of nodes) {
for(link of node.links) {
if(link.to === page.id) {
newLinks.push({
"source": node.id,
"target": page.id,
"type": link.type,
});
}
}
for(link of page.links) {
if(link.to === node.id) {
newLinks.push({
"source": page.id,
"target": node.id,
"type": link.type,
});
}
}
}
nodes.push({
"id": page.id,
"x": x,
"y": y,
"title": page.title,
"links": page.links,
"type": page.type,
"done": false,
"root": root,
});
for(link of newLinks) {
links.push(link);
}
refresh();
});
}
function addAll(node, x, y) {
const doneIds = nodes.map(n => n.id);
for(link of node.links) {
if(!doneIds.includes(link.to)) {
const theta = Math.random() * TAU;
const dx = 2 * radius * Math.cos(theta);
const dy = 2 * radius * Math.sin(theta);
addPage(link.to, x + dx, y + dy, false);
}
}
node.done = true;
d3.select(".node-" + node.id)
.style("fill", getColorFor);
}
function selectNode(node) {
if(selectedNode !== null) {
d3.select(".node-" + selectedNode.id)
.style("stroke", "#0000");
}
selectedNode = node;
if(selectedNode !== null) {
d3.select(".node-" + selectedNode.id)
.style("stroke", "#fff");
d3.select("#selected-node").attr("hidden", null);
d3.select("#selected-node-title").html(selectedNode.title);
d3.select("#selected-node-id").html(selectedNode.id);
d3.select("#selected-node-link").attr("href", "https://zzcxz.citrons.xyz/g/" + selectedNode.id);
} else {
d3.select("#selected-node").attr("hidden", true);
}
}
function visualize() {
const zoom = d3.zoom();
zoom.on("zoom", event => {
const elems = d3.select("#elems")
.attr("transform", event.transform);
transform = event.transform;
});
const svg = d3.select("#graph")
.append("svg")
.attr("id", "graph-svg")
.attr("width", "100%")
.attr("height", "100%")
.style("background-color", colorBackground)
.call(zoom);
const clientWidth = document.querySelector("#graph").clientWidth;
const clientHeight = document.querySelector("#graph").clientHeight;
d3.select("#spoiler").remove();
d3.select("#ui").attr("hidden", null);
d3.select("#expand-link").on("click", () => {
d3.select("#uiexpand").attr("hidden", true);
d3.select("#ui").attr("hidden", null);
});
d3.select("#contract-link").on("click", () => {
d3.select("#uiexpand").attr("hidden", null);
d3.select("#ui").attr("hidden", true);
});
d3.select("#load-page").on("keypress", (event) => {
if(event.keyCode == 13) {
addPage(event.target.value, (clientWidth/2-transform.x)/transform.k, (clientHeight/2-transform.y)/transform.k, true);
event.target.value = "";
}
});
d3.select("#clear-nodes").on("click", (event) => {
selectNode(null);
links.length = 0;
nodes.length = 0;
refresh();
});
d3.select("#toggle-labels").on("click", (event) => {
showLabels = !showLabels;
if(showLabels) {
d3.selectAll(".label").attr("visibility", "visible");
} else {
d3.selectAll(".label").attr("visibility", "hidden");
}
});
d3.select("body")
.on("keydown", event => {
if(event.keyCode == 27) {
selectNode(null);
}
})
.on("click", event => selectNode(null));
const marker = svg.append("svg:defs")
.selectAll(".triangle-marker")
.data([["normal", colorNormal], ["redirect", colorRedirect]])
.enter()
.append("svg:marker")
.attr("id", d => `triangle-${d[0]}`)
.attr("refX", radius+10)
.attr("refY", 5)
.attr("orient", "auto")
.attr("markerUnits", "strokeWidth")
.attr("markerWidth", 15)
.attr("markerHeight", 10)
.append("svg:polygon")
.attr("points", "0 0, 15 5, 0 10")
.attr("fill", d => d[1]);
const simulation = d3.forceSimulation().nodes(nodes);
const forceLinks = d3.forceLink(links)
.distance(linkDistance)
.strength(linkStrength)
.id((d, i) => d.id);
simulation.force("link", forceLinks)
.force("charge", d3.forceManyBody().distanceMax(256).distanceMin(1).strength(-50))
.force("collide", d3.forceCollide().radius(radius*1.4));
const elems = svg.append("g").attr("id", "elems");
const gLinks = elems.append("g").attr("id", "links");
const gNodes = elems.append("g").attr("id", "nodes");
const gLabels = elems.append("g").attr("id", "labels");
let node, link, label;
const dragDrop = d3.drag().on("start", (event, node) => {
node.fx = node.x;
node.fy = node.y;
}).on("drag", (event, node) => {
simulation.alpha(alphaInit).alphaTarget(alphaTarget).restart();
node.fx = event.x;
node.fy = event.y;
}).on("end", (event, node) => {
if (!event.active) {
simulation.alphaTarget(alphaTarget);
}
node.fx = null;
node.fy = null;
})
function tick() {
gNodes.selectAll(".node")
.attr("cx", d => d.x)
.attr("cy", d => d.y);
gLabels.selectAll(".label")
.attr("x", d => d.x)
.attr("y", d => d.y);
gLinks.selectAll(".link")
.attr("x1", d => d.source.x)
.attr("y1", d => d.source.y)
.attr("x2", d => d.target.x)
.attr("y2", d => d.target.y);
}
refresh = () => {
node = gNodes.selectAll(".node").data(nodes, d => d.id);
node.exit().remove();
node.enter()
.append("circle")
.attr("class", d => `node node-${d.id}`)
.attr("r", getRadiusFor)
.style("fill", getColorFor)
.style("stroke", "#0000")
.style("stroke-width", 2.5)
.call(dragDrop)
.on("click", (event, target) => addAll(target, target.x, target.y))
.on("contextmenu", (event, target) => { event.preventDefault(); selectNode(target); });
label = gLabels.selectAll(".label");
label = gLabels.selectAll(".label").data(nodes, d => d.id);
label.exit().remove();
label.enter()
.append("text")
.attr("class", "label")
.attr("text-anchor", "middle")
.attr("dominant-baseline", "middle")
.style("fill", colorBackground)
.style("stroke", colorNormal)
.style("stroke-width", 2.5)
.style("paint-order", "stroke")
.style("font-size", "15px")
.text(d => d.title)
.attr("pointer-events", "none")
.attr("visibility", showLabels ? "visible" : "hidden");
link = gLinks.selectAll(".link").data(links);
link.exit().remove();
link.enter()
.append("line")
.attr("class", "link")
.style("stroke", getColorFor)
.attr("marker-end", d => `url(#triangle-${d.type})`);
simulation.nodes(nodes).on("tick", tick);
simulation.force("link").initialize(links);
simulation.alpha(alphaInit).alphaTarget(alphaTarget).restart();
};
addPage("zzcxz", clientWidth/2, clientHeight/2, true);
}
window.onload = () => {
if(new URLSearchParams(window.location.search).has("skip")) {
visualize();
}
}

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<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
<channel>
<title>Blog™</title>
<link>https://trimill.xyz/blog/</link>
<description>Blog™</description>
<language>en</language>
<pubDate>{{ data.blogposts[0].timestamp.strftime("%a, %d %b %Y %H:%M:%S %z") }}</pubDate>
{% for post in data.blogposts %}
<item>
<title>{{ post.title }}</title>
<link>https://trimill.xyz/{{ post.url }}</link>
<description>{{ post.desc }}</description>
<pubDate>{{ post.timestamp.strftime("%a, %d %b %Y %H:%M:%S %z") }}</pubDate>
<guid>https://trimill.xyz/{{ post.url }}</guid>
</item>
{% endfor %}
</channel>
</rss>

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test.sh Executable file
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#!/bin/sh
. venv/bin/activate
export FLASK_APP=src/main
export FLASK_ENV=development
flask run