commit 7cea49d3092a44dcb858c6add8843ea81ca78036
Author: Benjamin Kraft <benjamin.kraft@online.de>
Date:   Fri Mar 24 12:54:42 2023 +0100

    Init

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c6ef218
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.idea
+
diff --git a/project.json b/project.json
new file mode 100644
index 0000000..9b08145
--- /dev/null
+++ b/project.json
@@ -0,0 +1,6 @@
+{
+	"display_name": "Lissajous curve",
+	"info_text": "Live rendering of a graph of a system of parametric equations.",
+	"visible": true,
+	"tags": ["Simulation", "Maths"]
+}
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diff --git a/public/data/images/favicon.ico b/public/data/images/favicon.ico
new file mode 100644
index 0000000..3172667
Binary files /dev/null and b/public/data/images/favicon.ico differ
diff --git a/public/data/scripts/curve.js b/public/data/scripts/curve.js
new file mode 100644
index 0000000..0e39b75
--- /dev/null
+++ b/public/data/scripts/curve.js
@@ -0,0 +1,59 @@
+class Curve{
+
+    constructor(x, y){
+        this.x = size / 2 + (x + 1) * size;
+        this.y = size / 2 + (y + 1) * size;
+        this.vertices = [];
+        this.color = Curve.getColor(x + 1, y + 1);
+        this.image = createGraphics(size, size);
+        this.image.clear();
+        this.image.strokeWeight(1);
+        this.image.stroke(this.color);
+    }
+
+    static getColor(x, y){
+        let div = x / y;
+        if (div > 1) div = y / x;
+        colorMode(HSB);
+        let c = color(div * 360, 100, 100);
+        colorMode(RGB);
+        return c;
+    }
+
+    update(xi, yi){
+        let x = size / 2 + sin(angle * (xi + 1)) * radius;
+        let y = size / 2 - cos(angle * (yi + 1)) * radius;
+        this.addPoint(x, y);
+    }
+
+    addPoint(x, y){
+        let v1 = this.vertices[this.vertices.length - 1];
+        let x1 = x;
+        let y1 = y;
+        if (v1){
+            x1 = v1.x;
+            y1 = v1.y;
+        }
+        this.vertices.push({x: x, y: y});
+
+        this.image.line(x1, y1, x, y);
+    }
+
+    reset(){
+        this.vertices = [];
+        this.image.clear();
+    }
+
+    show(){
+        image(this.image, this.x, this.y);
+
+        translate(this.x, this.y);
+        stroke(200);
+        strokeWeight(10);
+        let v = this.vertices[this.vertices.length - 1];
+        if (v)
+            point(v.x - size / 2, v.y - size / 2);
+        translate(-this.x, -this.y);
+    }
+
+}
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diff --git a/public/data/scripts/events.js b/public/data/scripts/events.js
new file mode 100644
index 0000000..e9919a2
--- /dev/null
+++ b/public/data/scripts/events.js
@@ -0,0 +1,25 @@
+'use strict'; 
+
+function keyPressed(){	
+	
+}
+
+function keyReleased(){
+	
+}
+
+function mouseMoved(){
+	
+}
+
+function mouseDragged(){
+	
+}
+
+function mousePressed(){
+	
+}
+
+function mouseReleased(){
+	
+}
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diff --git a/public/data/scripts/init.js b/public/data/scripts/init.js
new file mode 100644
index 0000000..b39de04
--- /dev/null
+++ b/public/data/scripts/init.js
@@ -0,0 +1,212 @@
+'use strict';
+
+let projectName = "lissajous_curve";
+
+let debug = false,
+	viewPort = {x: 0, y: 0},
+    font,
+    settings,
+    loader;
+
+//Only for online games
+let socket;
+
+let rows,
+    cols,
+    angle = 0,
+    vel,
+    size,
+    radius,
+    curves;
+
+function preload(){
+    loadJSON('data/settings/libraries.json', json => loadScripts(json));
+    loadJSON('data/settings/settings.json', json => settings = json);
+    loadFont('data/styles/font.ttf', f => font = f);
+}
+
+function setup(){
+    interfaceSetup();
+    canvasSetup();
+    updateValues();
+    updateInterface();
+}
+
+function draw(){
+
+    background(10);
+
+    updateLissajous();
+    showLissajous();
+
+    if (loader){
+        loader.update();
+        loader.display();
+    }
+
+	if (debug) debugInformation();
+}
+
+function updateLissajous(){
+    angle += vel;
+    if (angle > TWO_PI){
+        angle = 0;
+        for (let cr of curves){
+            for (let cc of cr){
+                cc.reset();
+            }
+        }
+    }
+    for (let x = 0; x < cols; x++){
+        for (let y = 0; y < rows; y++){
+            curves[x][y].update(x, y);
+        }
+    }
+}
+
+function showLissajous(){
+    showGrid();
+    showCircles();
+    showPoints();
+    showMovingGrid();
+    showCurves();
+}
+
+function showGrid(){
+    stroke('rgba(255, 255, 255, 0.1)');
+    strokeWeight(1);
+    for (let i = 1; i <= cols + 1; i++){
+        line(i * size, 0, i * size, size * (rows + 1)); 
+    }
+    for (let i = 1; i <= rows + 1; i++){
+        line(0, i * size, size * (cols + 1), i * size);
+    }
+}
+
+function showCircles(){
+    noFill();
+    stroke(200);
+    strokeWeight(2);
+    for (let x = 3 * size / 2; x < size * (cols + 1); x += size){
+        let y = size / 2;
+        ellipse(x, y, radius * 2);
+    }
+    for (let y = 3 * size / 2; y < size * (rows + 1); y += size){
+        let x = size / 2;
+        ellipse(x, y, radius * 2);
+    }
+}
+
+function showPoints(){
+    stroke(200);
+    strokeWeight(10);
+    for (let i = 1; i <= cols; i++){
+        let x = size * (i + 0.5) + sin(angle * i) * radius;
+        let y = size / 2 - cos(angle * i) * radius;
+        point(x, y);
+    }
+    for (let i = 1; i <= rows; i++){
+        let x = size / 2 + sin(angle * i) * radius;
+        let y = size * (i + 0.5) - cos(angle * i) * radius;
+        point(x, y);
+    }
+}
+
+function showMovingGrid(){
+    stroke('rgba(255, 255, 255, 0.2)');
+    strokeWeight(1);
+    for (let i = 1; i <= cols; i++){
+        let x = size * (i + 0.5) + sin(angle * i) * radius;
+        line(x, 0, x, size * (rows + 1));
+    }
+    for (let i = 1; i <= rows; i++){
+        let y = size * (i + 0.5) - cos(angle * i) * radius;
+        line(0, y, size * (cols + 1), y);
+    }
+}
+
+function showCurves(){
+    strokeWeight(1);
+    for (let x = 0; x < cols; x++){
+        for (let y = 0; y < rows; y++){
+            curves[x][y].show();
+        }
+    }
+}
+
+
+function updateValues(){
+    removeCurves();
+
+    cols = int($('#cols').val()),
+    rows = int($('#rows').val());
+
+    angle = 0;
+
+
+    if (width / height > (cols + 1) / (rows + 1)){
+        size = height / (rows + 1);
+    } else {
+        size = width / (cols + 1);
+    }
+    radius = size * 0.45;
+
+    
+    createCurves();
+}
+
+function updateInterface(){
+    let c = $('#cols').val(),
+        r = $('#rows').val(),
+        v = $('#vel').val();
+    
+    $('span[name="cols"]').html(c);
+    $('span[name="rows"]').html(r);
+    $('span[name="vel"]').html(v);
+
+    vel = float(v);
+}
+
+function removeCurves(){
+    if (!curves)
+        return;
+    for (let x = 0; x < cols; x++){
+        for (let y = 0; y < rows; y++){
+            curves[x][y].image.remove();
+        }
+    }
+}
+
+function createCurves(){
+    curves = [];
+    for (let x = 0; x < cols; x++){
+        curves[x] = [];
+        for (let y = 0; y < rows; y++){
+            curves[x][y] = new Curve(x, y);
+        }
+    }
+}
+
+function canvasSetup(){
+	setFrameRate(60);
+    let w = $('#canvas-holder').width(),
+        h = $('#canvas-holder').height();
+	let canvas = createCanvas(w, h);
+	canvas.parent('canvas-holder');
+    textFont(font);
+    imageMode(CENTER);
+}
+
+function interfaceSetup(){
+    
+}
+
+function loadScripts(libs){
+    for (let script in libs){
+        if (libs[script]){
+            let url = location.protocol + '//' + location.host + '/lib/benjocraeft/' + script + '.js';
+            console.log(url);
+            $.getScript(url);
+        }
+    }
+}
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diff --git a/public/data/scripts/online.js b/public/data/scripts/online.js
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+++ b/public/data/scripts/online.js
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+'use strict';
+
+function socketConnect(){
+    socket = io("https://" + window.location.hostname + "?game=" + projectName);
+}
+
+function createLobby(dom){
+    if (inputIsValid('create')){
+        onlineRequestFrontend(dom);
+        //TODO
+    }
+}
+
+function joinLobby(dom){
+    if (inputIsValid('join')){
+        onlineRequestFrontend(dom);
+        //TODO
+    }
+}
+
+function onlineRequestFrontend(dom){
+    $(dom).blur();
+    $(dom).attr('disabled', 'disabled');
+    if (loader) loader.destroy();
+    loader = new Loader($('#loader').get(0));
+}
+
+function inputIsValid(type){
+    let valid = true;
+    $('.error-label').html('');
+    if (type === 'create'){
+        if ($('#player-name > input').val() === ''){
+            valid = false;
+            $('#player-name > .error-label').html('Please enter a name!');
+        }
+    }
+    if (type === 'join'){
+        if ($('#player-name > input').val() === ''){
+            valid = false;
+            $('#player-name > .error-label').html('Please enter a name!');
+        }
+        if ($('#lobby-code > input').val() === ''){
+            valid = false;
+            $('#lobby-code > .error-label').html('Please enter your code!');
+        }
+    }
+    return valid;
+}
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diff --git a/public/data/settings/libraries.json b/public/data/settings/libraries.json
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--- /dev/null
+++ b/public/data/settings/libraries.json
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+{
+    "collision": false,
+    "colorPicker": false,
+    "cookie": true,
+    "loader": true,
+    "prototypes": true,
+    "technical": true
+}
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diff --git a/public/data/settings/settings.json b/public/data/settings/settings.json
new file mode 100644
index 0000000..544b7b4
--- /dev/null
+++ b/public/data/settings/settings.json
@@ -0,0 +1,3 @@
+{
+    
+}
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diff --git a/public/data/styles/color_picker.css b/public/data/styles/color_picker.css
new file mode 100644
index 0000000..a5b510e
--- /dev/null
+++ b/public/data/styles/color_picker.css
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+#color_picker{
+	width: 300px;
+	height: 25%;
+	margin: 20px;
+	margin-top: 50px;
+	border: 5px solid #000;
+	background-color: #000;
+	-webkit-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+	position: relative;
+}
+#color_picker_numeric{
+	width: 80%;
+	padding: 5%;
+	margin: 5%;
+	background-color: #888;
+	border-radius: 10px;
+	overflow: hidden;
+}
+.color_picker_rgb{
+	float: left;
+	width: 22%;
+	height: 35px;
+	font-size: 25px;
+	color: #000;
+}
+.color_picker_rgb:nth-child(1){
+	margin-right: 10%;
+	margin-left: 3%;
+	background-color: #F00;
+	
+}
+.color_picker_rgb:nth-child(2){
+	background-color: #0F0;
+}
+.color_picker_rgb:nth-child(3){
+	margin-left: 10%;
+	background-color: #00F;
+	color: #FFF;
+}
+#color_picker_hex{
+	width: 50%;
+	height: 30px;
+	font-size: 25px;
+	margin: 10% 25% 0 25%;
+}
+#saturation{
+	position: relative;
+	width: calc(100% - 33px);
+	height: 100%;
+	background: linear-gradient(to right, #FFF 0%, #F00 100%);
+	float: left;
+	margin-right: 6px;
+}
+#value {
+  width: 100%;
+  height: 100%;
+  background: linear-gradient(to top, #000 0%, rgba(255,255,255,0) 100%);
+}
+#sb_picker{
+  border: 2px solid;
+  border-color: #FFF;
+  position: absolute;
+  width: 14px;
+  height: 14px;
+  border-radius: 10px;
+  bottom: 50px;
+  left: 50px;
+  box-sizing: border-box;
+  z-index: 10;
+}
+#hue {
+  width: 27px;
+  height: 100%;
+  position: relative;
+  float: left;
+  background: linear-gradient(to bottom, #F00 0%, #F0F 17%, #00F 34%, #0FF 50%, #0F0 67%, #FF0 84%, #F00 100%);
+}
+#hue_picker {
+  position: absolute;
+  background: #000;
+  border-bottom: 1px solid #000;
+  top: 0;
+  width: 27px;
+  height: 2px;
+}
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diff --git a/public/data/styles/font.ttf b/public/data/styles/font.ttf
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index 0000000..199cf40
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diff --git a/public/data/styles/range_input.css b/public/data/styles/range_input.css
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+++ b/public/data/styles/range_input.css
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+input[type=range] {
+  -webkit-appearance: none;
+  margin: 18px 0;
+  width: 100%;
+}
+input[type=range]:focus {
+  outline: none;
+}
+input[type=range]::-webkit-slider-runnable-track {
+  width: 100%;
+  height: 8.4px;
+  cursor: pointer;
+  animate: 0.2s;
+  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
+  background: #3071a9;
+  border-radius: 1.3px;
+  border: 0.2px solid #010101;
+}
+input[type=range]::-webkit-slider-thumb {
+  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
+  border: 1px solid #000000;
+  height: 36px;
+  width: 16px;
+  border-radius: 3px;
+  background: #ffffff;
+  cursor: pointer;
+  -webkit-appearance: none;
+  margin-top: -14px;
+}
+input[type=range]:focus::-webkit-slider-runnable-track {
+  background: #367ebd;
+}
+input[type=range]::-moz-range-track {
+  width: 100%;
+  height: 8.4px;
+  cursor: pointer;
+  animate: 0.2s;
+  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
+  background: #3071a9;
+  border-radius: 1.3px;
+  border: 0.2px solid #010101;
+}
+input[type=range]::-moz-range-thumb {
+  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
+  border: 1px solid #000000;
+  height: 36px;
+  width: 16px;
+  border-radius: 3px;
+  background: #52b923;
+  cursor: pointer;
+}
+input[type=range]::-ms-track {
+  width: 100%;
+  height: 8.4px;
+  cursor: pointer;
+  animate: 0.2s;
+  background: transparent;
+  border-color: transparent;
+  border-width: 16px 0;
+  color: transparent;
+}
+input[type=range]::-ms-fill-lower {
+  background: #2a6495;
+  border: 0.2px solid #010101;
+  border-radius: 2.6px;
+  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
+}
+input[type=range]::-ms-fill-upper {
+  background: #3071a9;
+  border: 0.2px solid #010101;
+  border-radius: 2.6px;
+  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
+}
+input[type=range]::-ms-thumb {
+  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
+  border: 1px solid #000000;
+  height: 36px;
+  width: 16px;
+  border-radius: 3px;
+  background: #ffffff;
+  cursor: pointer;
+}
+input[type=range]:focus::-ms-fill-lower {
+  background: #3071a9;
+}
+input[type=range]:focus::-ms-fill-upper {
+  background: #367ebd;
+}
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diff --git a/public/index.html b/public/index.html
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+++ b/public/index.html
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+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+		<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.6.0/p5.min.js" type="text/javascript"></script>
+        <script src="https://code.jquery.com/jquery-3.6.4.min.js" type="text/javascript"></script>
+        <script src="data/scripts/init.js" type="text/javascript"></script>
+        <script src="data/scripts/events.js" type="text/javascript"></script>
+        <script src="data/scripts/online.js" type="text/javascript"></script>
+        <script src="data/scripts/curve.js" type="text/javascript"></script>
+		<link href="styles.css" rel="stylesheet">
+		<link href="data/styles/color_picker.css" rel="stylesheet">
+		<link href="data/styles/range_input.css" rel="stylesheet">
+		<link href="data/images/favicon.ico" rel="icon" type="image/x-icon">
+		<title>Lissajous curve</title>
+    </head>
+    <body>
+        <div id="p5_loading"></div>
+        <div id="content">
+            <div id="canvas-holder"></div>
+            <div id="interface">
+                <h1>Lissajous Curve</h1>
+                <span>Columns: </span><span name="cols"></span>
+                <input id="cols" max="20" min="1" oninput="updateInterface();" step="1" type="range" value="5">
+                <span>Rows: </span><span name="rows"></span>
+                <input id="rows" max="20" min="1" oninput="updateInterface();" step="1" type="range" value="5">
+                <span>Velocity: </span><span name="vel"></span>
+                <input id="vel" max="0.1" min="0" oninput="updateInterface();" step="0.005" type="range" value="0.02">
+                <button onclick="updateValues();">OK</button>
+            </div>
+        </div>
+    </body>
+</html>
\ No newline at end of file
diff --git a/public/styles.css b/public/styles.css
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--- /dev/null
+++ b/public/styles.css
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+a:link, a:hover, a:active, a:visited{color: #000;}
+
+html, body{margin: 0; padding: 0; height: 100%; width: 100%;}
+
+canvas{margin: 0; padding: 0; border: none; display: block;}
+
+button:hover{cursor: pointer;}
+
+@font-face{
+	font-family: "Rametto";
+	src: url("data/styles/font.ttf");
+}
+
+*{ 
+	font-family: "Rametto";
+	color: #000;
+	font-size: 17px;
+}
+
+:root{
+    --interface-width: 200px;
+    --width: calc(100vw - var(--interface-width) - 20px);
+    --height: 100vh;
+    --interface-color: rgb(36, 56, 145);
+}
+
+/**
+ * Standard styles
+ */
+
+#canvas-holder{
+    position: relative;
+	width: var(--width);
+    height: var(--height);
+}
+#canvas-holder canvas{
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    border-radius: inherit;
+}
+#p5_loading{
+    display: none;
+}
+
+
+
+#interface{
+    position: absolute;
+    right: 0;
+    top: 0;
+    width: var(--interface-width);
+    height: calc(100% - 20px);
+    background-color: var(--interface-color);
+    border-left: 2px solid rgb(122, 105, 216);
+    padding: 10px;
+    text-align-last: center;
+}
+
+h1{
+    text-decoration: underline;
+}
+
+input{
+    background-color: var(--interface-color);
+}
+
+button{
+    background-color: rgb(71, 177, 22);
+    border-radius: 3px;
+    box-shadow: 2px 2px 5px #000;
+    border: 2px solid rgb(36, 94, 10);
+}
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diff --git a/public/thumbnail.png b/public/thumbnail.png
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