mostly finished
This commit is contained in:
jslightham
169
index.html
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169
index.html
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<html>
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<head>
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<!-- Googe Charts Script - For Graphs-->
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<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
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<script src="main.js"></script>
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<title>Collision Simulation</title>
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<style>
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body{
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font-family: Helvetica, "Trebuchet MS", Verdana, sans-serif;
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background-color: #f2f2f2;
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}
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h1, h4{
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padding-bottom: none;
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padding-top: none;
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}
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table, th, td, tr{
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border: 2px solid black;
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}
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.wrapper {
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overflow:hidden;
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}
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.wrapper div {
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min-height: 200px;
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padding: 10px;
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}
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#one {
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background-color: white;
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float: left;
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margin-right: 10px;
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width: 58%;
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border-radius: 15px;
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margin-bottom: 25px;
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}
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#two {
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background-color: white;
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overflow:hidden;
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margin: 0px;
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border-radius: 15px;
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min-height: 20%;
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width:500px;
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}
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@media screen and (max-width: 400px) {
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#one {
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float: none;
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margin-right:0;
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width:auto;
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border:0;
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border-bottom:2px solid #000;
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}
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}
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.numinput{
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width:15%;
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}
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#playButton {
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position: fixed; /* Sit on top of the page content */
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display: block; /* Hidden by default */
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width: 100%; /* Full width (cover the whole page) */
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height: 100%; /* Full height (cover the whole page) */
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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background-color: rgba(0,0,0,0.5); /* Black background with opacity */
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z-index: 2; /* Specify a stack order in case you're using a different order for other elements */
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cursor: pointer; /* Add a pointer on hover */
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}
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#play{
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color: white;
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text-align: center;
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margin-top: 50px;
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}
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table {
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border-collapse: collapse;
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width: 100%;
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border: none;
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}
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table td, table th {
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border: 1px solid #ddd;
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padding: 2px;
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}
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table tr{background-color: #f2f2f2;}
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table th {
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padding-top: 5px;
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padding-bottom: 5px;
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text-align: left;
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background-color: #5bc0de;
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color: white;
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}
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</style>
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</head>
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<body>
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<div id = "playButton">
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<div id="play">
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<h1>Welcome to the collision simulator!</h1>
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<h3>A Project by: Johnathon Slightham</h2>
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<p>Visit the wiki on github for more information on how this works!</p>
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<h3>To use the simulator:</h3>
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<ul>
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<li>Add A Particle with the form on the right</li>
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<li>Change the coefficients of friction on the form to the right</li>
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<li>Change the collision effectiveness on the form to the right</li>
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<li>View the graph below the simulation</li>
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<li>Change what the graph displays in each axis</li>
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</ul>
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<button onclick="main('myCanvas')" style="width: 20%; height: 5%; border-radius: 10px; background-color:#0275d8; border: none; color: white;">Run Simulation</button>
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</div>
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</div>
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<h1>Collision Simulator</h1>
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<h4>Project by Johnathon Slightham</h3>
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<div class="wrapper">
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<div id="one">
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<center>
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<canvas id="myCanvas" width="750" height="750" style="border: solid 2px black;">Your browser does not support HTML 5</canvas><br>
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</center>
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</div>
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<div id="two">
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<h3>Modifiers</h3>
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Coefficient of Kinetic Friction: <input type="number" value="0.00005" step="0.000001" id="fr" onchange="frChange()" class="numinput"> <br>
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<!-- Coefficient of Static Friction: <input type="number" value="0.005" step="0.000001" id="sfr" onchange="sfrChange()" class="numinput"> <br> /!-->
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Collision Effectiveness (100% - No energy lost): <input type="number" id="effe" value="85" class="numinput" onchange="effeChange()">% <br>
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Draw Velocity Vector: <input type="checkbox" id="drawvelocity" name="drawvelocity" value="true">
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<h3>Placed Particles</h3>
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<table id="particles">
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<tr>
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<th>ID #</th>
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<th>Mass</th>
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<th>X Velocity</th>
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<th>Y Velocity</th>
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<th>X Acceleration</th>
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<th>Y Acceleration</th>
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</tr>
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</table>
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Total Kinetic Energy: <span id="ek"></span> J
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<h3>Add Particles</h3>
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<form action="#" onsubmit="addParticle(); return false" name="add" id="add">
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Mass: <input type="number" id="mass" name="mass"> X-Velocity: <input type="number" id="xvel" name="xvel"> Y-Velocity: <input type="number" id="yvel" name="yvel"> <input type="submit" value="Add Particle">
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</form>
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<h3>Modify Graph</h3>
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Graph X Axis:
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<select id="graphx">
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</select>
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Graph Y Axis:
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<select id="graphy">
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</select>
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</div>
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<br>
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</div>
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<div id="curve_chart"></div>
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</body>
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</html>
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625
main.js
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625
main.js
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class Particle{
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constructor(id, x, y, vx, vy, m){
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this.id = id;
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this.x = x;
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this.y = y;
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this.vx = vx;
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this.vy = vy;
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this.m = m;
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this.r = getRadius(m);
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this.v = Math.sqrt(Math.pow(this.vx, 2) + Math.pow(this.vy, 2));
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this.ek = [];
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this.ek.push([0, 0]);
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this.ax = 0
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this.ay = 0;
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}
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}
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// Functions to display or hide the welcome screen
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function on() {
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document.getElementById("playButton").style.display = "block";
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}
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function off() {
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document.getElementById("playButton").style.display = "none";
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}
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var particles = [];
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var ctx;
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var canvas;
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var table;
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var a = 0;
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var sa;
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var ek = [];
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var eff = 0.85;
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var shot = new Audio("shot.mp3");
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var wallhit = new Audio("wallhit.mp3");
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var selector = document.getElementById('graph_type');
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var sfr = 0;
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var fr = 0;
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var drawVelocityVector = false;
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var measurementData = [];
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var chartX = "measurement";
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var chartY = "ekt"
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measurementData.push('Measurement Number');
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measurementData.push(0);
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ek.push('Kientic Energy (J)');
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ek.push(0);
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var measurement = 0;
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// Load the google charts API
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google.charts.load('current', {'packages':['corechart']});
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function main(elem){
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off();
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canvas = document.getElementById(elem);
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ctx = canvas.getContext("2d");
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table = document.getElementById("particles");
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fr = document.getElementById("fr").value;
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//sfr = document.getElementById("sfr").value;
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drawVelocityVector = document.getElementById("drawvelocity").checked;
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reloadDropdowns();
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// Set a callback to run when the charts API is loaded
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google.charts.setOnLoadCallback(drawKEChart);
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//canvas.addEventListener("mousedown", doMouseDown, false);
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//canvas.addEventListener("onmouseup", doMouseUp, false);
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// Loop through each particle every 10 milliseconds, create measurements every 1 second
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setInterval(loop, 10);
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setInterval(measureData, 1000);
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}
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// The main loop function that handles each particle
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function loop(){
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// Set volumes of sounds according to % energy transferred
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eff = document.getElementById("effe").value/100;
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shot.volume = 1 - eff;
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wallhit.volume = 1 - eff;
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// Acceleration = 9.8*uk (derived from F=ma, -uk*g*m=m*a)
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a = -(9.8)*fr;
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sa = -(9.8)*sfr;
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chartX = document.getElementById("graphx").value;
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chartY = document.getElementById("graphy").value;
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drawVelocityVector = document.getElementById("drawvelocity").checked;
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// Write the current kinetic energy, then reset to 0 for recalculation
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document.getElementById("ek").innerHTML = ek[ek.length-1];
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// Draw board, then process collisions.
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draw();
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separate();
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detectCollisions();
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// Iterate through each particle, to change it's velocity from acceleration, and position from velocity
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particles.forEach((elem, i) => {
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// Determine velocity vector and store for later use
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elem.v = Math.sqrt(Math.pow(elem.vx, 2) + Math.pow(elem.vy, 2));
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// Check for collisions with wall, and on collision set to - velocity
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if(elem.x + elem.vx > canvas.width - elem.r || elem.x + elem.vx < elem.r){
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elem.vx = -eff*elem.vx;
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let wallHitAudio = wallhit.cloneNode();
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wallHitAudio.volume = 1 - eff;
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wallHitAudio.play()
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// Fix bug of balls getting stuck in walls, if a ball is in a wall move it out
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if(elem.x + elem.vx > canvas.width - elem.r){
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elem.x = canvas.width - elem.r;
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}
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if(elem.x + elem.vx < elem.r){
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elem.x = elem.r;
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}
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}
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if(elem.y + elem.vy > canvas.height - elem.r || elem.y + elem.vy < elem.r){
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elem.vy = -eff*elem.vy;
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let wallHitAudio = wallhit.cloneNode();
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wallHitAudio.volume = 1 - eff;
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wallHitAudio.play()
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// Fix bug of balls getting stuck in walls, if a ball is in a wall move it out
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if(elem.y + elem.vy < elem.r){
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elem.y = elem.r;
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}
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if(elem.y + elem.vy > canvas.width - elem.r){
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elem.y = canvas.height - elem.r;
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}
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}
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// Calculate Theta, and acceleration values based on the direction of the velocity vector
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elem.theta = Math.atan2(elem.vx,elem.vy);
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elem.sax = sa*Math.abs(Math.sin(elem.theta));
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elem.say = sa*Math.abs(Math.cos(elem.theta));
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elem.ax = a*Math.abs(Math.sin(elem.theta));
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elem.ay = a*Math.abs(Math.cos(elem.theta));
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// If the particle has enough velocity to be decelerated, decelerate it
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if(!Math.abs(elem.vx) < Math.abs(elem.ax) || !Math.abs(elem.vy) < Math.abs(elem.ay)){
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// Add acceleration to velocity each iteration
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if(elem.vx > 0){
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elem.vx += elem.ax;
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}
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else{
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elem.vx -= elem.ax;
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}
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// Add acceleration to velocity each iteration
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if(elem.vy > 0){
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elem.vy += elem.ay;
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}
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else{
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elem.vy -= elem.ay;
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}
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}else{
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elem.ax = 0;
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elem.ay = 0;
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}
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// Set velocity to zero if the acceleration is larger than it
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if(Math.abs(elem.ay) > Math.abs(elem.vy) || Math.abs(elem.ax) > Math.abs(elem.vx)){
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elem.ax = 0;
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elem.ay = 0;
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elem.vx = 0;
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elem.vy = 0;
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}else{
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if((elem.vx == 0 || elem.vy == 0) && (Math.abs(elem.say) > Math.abs(elem.vy) || Math.abs(elem.sax) > Math.abs(elem.vx))){
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elem.ax = 0;
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elem.ay = 0;
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elem.vx = 0;
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elem.vy = 0;
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}else{
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// Each iteration add the velocity to the position
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elem.x += elem.vx;
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elem.y += elem.vy;
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}
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}
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// Display data in the table
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table.rows[i+1].cells[0].innerHTML = elem.id;
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table.rows[i+1].cells[1].innerHTML = elem.m + " kg";
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table.rows[i+1].cells[2].innerHTML = Math.abs(elem.vx.toPrecision(2));
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table.rows[i+1].cells[3].innerHTML = Math.abs(elem.vy.toPrecision(2));
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table.rows[i+1].cells[4].innerHTML = elem.ax.toPrecision(2);
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table.rows[i+1].cells[5].innerHTML = elem.ay.toPrecision(2);
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})
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}
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// Function to draw all particles on the canvas, and draw velocity vectors
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function draw(){
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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particles.forEach((elem, i) =>
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{
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// Draw actual particle
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ctx.beginPath();
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ctx.fillStyle = "black";
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ctx.strokeStyle = "black";
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ctx.arc(elem.x, elem.y, elem.r, 0, 2*Math.PI);
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ctx.fill();
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ctx.stroke();
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// Center mass in particle
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ctx.font = elem.m*0.55 + 'px serif';
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ctx.fillStyle = "white";
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ctx.textAlign = "center";
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ctx.fillText(elem.m+"kg", elem.x, elem.y + elem.r/4);
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// Draw Velocity Vector, if this option is selected
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if(drawVelocityVector){
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ctx.beginPath();
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ctx.strokeStyle = "red";
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ctx.moveTo(elem.x, elem.y);
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ctx.lineTo(elem.x + elem.v*Math.sin(elem.theta)* 10, elem.y + elem.v*Math.cos(elem.theta) * 10);
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ctx.stroke();
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}
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||||
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});
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||||
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}
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// Function that returns the distance between the two particles given
|
||||
function getDistance(p1, p2){
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let xDist = Math.abs(p1.x - p2.x);
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||||
let yDist = Math.abs(p1.y - p2.y);
|
||||
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return Math.sqrt(Math.pow(xDist, 2) + Math.pow(yDist, 2));
|
||||
}
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||||
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var collisions = [];
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||||
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// Function that will separate all particles on the canvas
|
||||
function separate(){
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collisions = [];
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||||
let noOverlap = false;
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||||
while(!noOverlap){
|
||||
noOverlap = true;
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||||
particles.forEach((elem1, i) => {
|
||||
for(var j = i+1; j < particles.length; j++){
|
||||
elem2 = particles[j];
|
||||
// Make sure not comparing the same element
|
||||
if(elem1 != elem2){
|
||||
// If the particles are overlapping
|
||||
if(getDistance(elem1, elem2) < elem1.r + elem2.r){
|
||||
collisions.push({element1: elem1, element2: elem2});
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||||
console.log("overlap");
|
||||
|
||||
// Move the particle back to its previous position, only if doing so will not put it inside of a wall
|
||||
if(!elem1.x - elem1.vx > canvas.width - elem1.r || !elem1.x - elem1.vx < elem1.r)
|
||||
elem1.x -= elem1.vx;
|
||||
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||||
if(!elem2.x - elem2.vx > canvas.width - elem2.r || !elem2.x - elem2.vx < elem2.r)
|
||||
elem2.x -= elem2.vx;
|
||||
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||||
if(!elem1.y - elem1.vy > canvas.height - elem1.r || !elem1.y - elem1.vy < elem1.r)
|
||||
elem1.y -= elem1.vy;
|
||||
|
||||
if(!elem2.y - elem2.vy > canvas.height - elem2.r || !elem2.y - elem2.vy < elem2.r)
|
||||
elem2.y -= elem2.vy;
|
||||
|
||||
noOverlap = false;
|
||||
|
||||
draw();
|
||||
}
|
||||
}
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// Function that detects, and handles all collisions.
|
||||
function detectCollisions(){
|
||||
|
||||
collisions.forEach((collision) => {
|
||||
let shotAudio = shot.cloneNode()
|
||||
shotAudio.volume = 1 - eff;
|
||||
shotAudio.play()
|
||||
elem1 = collision.element1;
|
||||
elem2 = collision.element2;
|
||||
|
||||
// Check if the particles being compared are the same, if they are don't run collision detection or particles will collide with themselves.
|
||||
if(elem1 != elem2){
|
||||
elem1.px = elem1.x;
|
||||
elem1.py = elem1.y;
|
||||
elem2.px = elem2.x;
|
||||
elem2.py = elem2.y;
|
||||
|
||||
// Store previous velocities, this will be used later when detecting static friction
|
||||
elem1.pvx = elem1.vx;
|
||||
elem1.pvy = elem1.vy;
|
||||
elem2.pvx = elem2.vx;
|
||||
elem2.pvy = elem2.vy;
|
||||
|
||||
// If the particles are still overlapping, separate them again
|
||||
if(getDistance(elem1, elem2) < elem1.r + elem2.r){
|
||||
console.log("overlap");
|
||||
elem1.x -= elem1.vx;
|
||||
elem1.y -= elem1.vy;
|
||||
elem2.x -= elem2.vx;
|
||||
elem2.y -= elem2.vy;
|
||||
}
|
||||
|
||||
// Theta = angle of velocity
|
||||
let theta1 = Math.atan2(elem1.vx,elem1.vy);
|
||||
let theta2 = Math.atan2(elem2.vx,elem2.vy);
|
||||
|
||||
// Phi = angle of collision
|
||||
let phi = Math.atan2((elem2.px - elem1.px),(elem2.py - elem1.py));
|
||||
|
||||
// Find rotated x & y components, with x axis parallel to the contact normal vector
|
||||
let v1xr = elem1.v*Math.cos(theta1 - phi);
|
||||
let v1yr = elem1.v*Math.sin(theta1 - phi);
|
||||
let v2xr = elem2.v*Math.cos(theta2 - phi);
|
||||
let v2yr = elem2.v*Math.sin(theta2 - phi);
|
||||
|
||||
// Use the rotated components to solve a 1 dimensional collision.
|
||||
let v1fxr = eff*(v1xr*(elem1.m - elem2.m) + 2*elem2.m*v2xr)/(elem1.m + elem2.m);
|
||||
let v2fxr = eff*(v2xr*(elem2.m - elem1.m) + 2*elem1.m*v1xr)/(elem2.m + elem1.m);
|
||||
|
||||
elem1.vy = v1fxr*Math.cos(phi) + v1yr*Math.cos(phi + Math.PI/2);
|
||||
elem1.vx = v1fxr*Math.sin(phi) + v1yr*Math.sin(phi + Math.PI/2);
|
||||
elem2.vy = v2fxr*Math.cos(phi) + v2yr*Math.cos(phi + Math.PI/2);
|
||||
elem2.vx = v2fxr*Math.sin(phi) + v2yr*Math.sin(phi + Math.PI/2);
|
||||
|
||||
// Calculate new theta, and static acceleration for static friction checking
|
||||
elem1.theta = Math.atan2(elem1.vx,elem1.vy);
|
||||
elem1.sax = sa*Math.abs(Math.sin(elem1.theta));
|
||||
elem1.say = sa*Math.abs(Math.cos(elem1.theta));
|
||||
|
||||
elem2.theta = Math.atan2(elem2.vx,elem2.vy);
|
||||
elem2.sax = sa*Math.abs(Math.sin(elem2.theta));
|
||||
elem2.say = sa*Math.abs(Math.cos(elem2.theta));
|
||||
|
||||
if((elem2.sax > elem2.vx || elem2.say > elem2.vy) && (elem2.pvx == 0 || elem2.pvy == 0)){
|
||||
//elem2.vx = 0;
|
||||
//elem2.vy = 0;
|
||||
}
|
||||
|
||||
if(elem1.sax > elem1.vx || elem1.say > elem1.vy && (elem1.pvx == 0 || elem1.pvy == 0)){
|
||||
//elem1.vx = 0;
|
||||
//elem1.vy = 0;
|
||||
}
|
||||
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
// Function called when the add particle button is submitted
|
||||
function addParticle(){
|
||||
var form = document.getElementById("add");
|
||||
var errMsg = "Errors: "; // String to store all errors with entered data
|
||||
// Mass cannot be less than 1 error
|
||||
if(form["mass"].value < 1){
|
||||
errMsg += "Cannot Have Negative, or Zero Mass! "
|
||||
}
|
||||
// Mass is too large for the canvas size error
|
||||
else if(getRadius(form["mass"].value)*2 + 10 > canvas.width || getRadius(form["mass"].value)*2 + 10 > canvas.height){
|
||||
errMsg += "That mass is too large for this canvas! "
|
||||
}else if(!form["xvel"].value || !form["yvel"].value || !form["mass"].value){
|
||||
errMsg += "One or more values is not defined! "
|
||||
}
|
||||
// If no errors, add rows to the table and insert the particle into the array
|
||||
else{
|
||||
|
||||
|
||||
var xv = parseInt(form["xvel"].value)
|
||||
var yv = parseInt(form["yvel"].value)
|
||||
|
||||
// Check if the acceleration is larger than the velocity, if so set velocity to 0 and not negative.
|
||||
|
||||
let n = 1;
|
||||
if(particles.length > 0){
|
||||
n = particles[particles.length-1].id +1;
|
||||
}
|
||||
|
||||
// Find a position that is not ontop of another ball, or inside of a wall. This will randomize the position 9 times or until a successful location is discovered.
|
||||
let validPos = false;
|
||||
let numtries = 0;
|
||||
let tx = 0; let ty = 0;
|
||||
while(!validPos && numtries < 9){
|
||||
numtries ++;
|
||||
validPos = true;
|
||||
tx = Math.round(Math.random()*((canvas.width - getRadius(parseInt(form["mass"].value))) - getRadius(parseInt(form["mass"].value)) - 5) + getRadius(parseInt(form["mass"].value)) + 5);
|
||||
ty = Math.round(Math.random()*((canvas.height - getRadius(parseInt(form["mass"].value))) - getRadius(parseInt(form["mass"].value)) - 5) + getRadius(parseInt(form["mass"].value)) + 5);
|
||||
let temp = new Particle(n, tx, ty, xv, yv, parseInt(form["mass"].value)+5);
|
||||
particles.forEach(particle =>{
|
||||
if(getDistance(particle, temp) < particle.r + temp.r){
|
||||
validPos = false;
|
||||
}
|
||||
})
|
||||
}
|
||||
// if a valid position was found create it
|
||||
if(validPos){
|
||||
table.insertRow();
|
||||
table.rows[table.rows.length -1].insertCell();
|
||||
table.rows[table.rows.length -1].insertCell();
|
||||
table.rows[table.rows.length -1].insertCell();
|
||||
table.rows[table.rows.length -1].insertCell();
|
||||
table.rows[table.rows.length -1].insertCell();
|
||||
table.rows[table.rows.length -1].insertCell();
|
||||
particles.push(new Particle(n, tx, ty, xv, yv, parseInt(form["mass"].value)));
|
||||
}else{
|
||||
errMsg += "Not enough room for that particle on the canvas! "
|
||||
}
|
||||
|
||||
reloadDropdowns();
|
||||
}
|
||||
if(errMsg != "Errors: "){
|
||||
alert(errMsg);
|
||||
}
|
||||
}
|
||||
|
||||
// Function that returns a radius, by multiplying the given mass by a constant
|
||||
function getRadius(mass){
|
||||
return mass*0.8;
|
||||
}
|
||||
|
||||
// Function to remove a particle from the array by id
|
||||
function remParticle(id){
|
||||
alert("remove");
|
||||
id = parseInt(id, 10);
|
||||
|
||||
particles = particles.filter(function(element, i){
|
||||
eid = element.id;
|
||||
|
||||
if(id == eid){
|
||||
table.deleteRow(i+1);
|
||||
}
|
||||
return id != eid;
|
||||
});
|
||||
console.log(particles);
|
||||
}
|
||||
|
||||
// Function that adds the data at the current time to their respective array
|
||||
function measureData(){
|
||||
measurement++;
|
||||
let ekt = 0;
|
||||
particles.forEach((elem, i) => {
|
||||
ekt += 0.5*Math.pow(elem.v, 2)*elem.m;
|
||||
// Ek=0.5mv^2, add to total
|
||||
elem.ek.push(0.5*Math.pow(elem.v, 2)*elem.m);
|
||||
measurementData.push(measurement);
|
||||
|
||||
})
|
||||
ek.push(ekt.toPrecision(6));
|
||||
if(measurement > 100){
|
||||
measurement = 0;
|
||||
measurementData = [];
|
||||
measurementData.push('Time (s)');
|
||||
measurementData.push(0);
|
||||
ek = [];
|
||||
ek.push('Kientic Energy (J)');
|
||||
ek.push(0);
|
||||
|
||||
particles.forEach((elem, i) => {
|
||||
elem.ek = [];
|
||||
elem.ek.push('Kientic Energy (J)');
|
||||
})
|
||||
}
|
||||
drawKEChart();
|
||||
}
|
||||
|
||||
// Function to draw the graph based on the selected values
|
||||
function drawKEChart() {
|
||||
//console.log(chartX);
|
||||
let x = [];
|
||||
if(chartX == "measurement"){
|
||||
x = [...measurementData];
|
||||
}else if(chartX == "ekt"){
|
||||
x = [...ek];
|
||||
}else{
|
||||
x = [...particles[parseInt(chartX, 10)-1].ek];
|
||||
}
|
||||
|
||||
let y = [];
|
||||
if(chartY == "measurement"){
|
||||
y = [...measurementData];
|
||||
}else if(chartY == "ekt"){
|
||||
y = [...ek];
|
||||
}else{
|
||||
y = [...particles[parseInt(chartY, 10)-1].ek];
|
||||
}
|
||||
|
||||
var arr = [];
|
||||
x.forEach((n, i) =>{
|
||||
arr.push([n, y[i]]);
|
||||
})
|
||||
|
||||
var data = google.visualization.arrayToDataTable(arr);
|
||||
|
||||
var options = {
|
||||
title: 'Graph (Change X and Y Axis in the above form):',
|
||||
legend: { position: 'bottom' }
|
||||
};
|
||||
|
||||
var chart = new google.visualization.LineChart(document.getElementById('curve_chart'));
|
||||
|
||||
chart.draw(data, options);
|
||||
|
||||
}
|
||||
|
||||
// Function called when static friction is changed, to make sure a valid number is selected
|
||||
function sfrChange(){
|
||||
let element = document.getElementById("sfr");
|
||||
if(element.value >= 1){
|
||||
alert("The coefficient of static friction cannot be more than 1 for a billiard ball!");
|
||||
element.value = sfr;
|
||||
}else if(element.value <= fr){
|
||||
alert("The coefficient of kinetic friction cannot be more than the coefficient of static friction!");
|
||||
element.value = sfr;
|
||||
}
|
||||
else{
|
||||
sfr = document.getElementById("sfr").value;
|
||||
}
|
||||
}
|
||||
|
||||
// Function called when kinetic friction is changed, to make sure a valid number is selected
|
||||
function frChange(){
|
||||
let element = document.getElementById("fr");
|
||||
if(element.value >= 1){
|
||||
alert("The coefficient of kinetic friction cannot be more than 1 for a billiard ball!");
|
||||
element.value = fr;
|
||||
}
|
||||
//else if(element.value >= sfr){
|
||||
// alert("The coefficient of kinetic friction cannot be more than the coefficient of static friction!");
|
||||
// element.value = fr;
|
||||
//}
|
||||
else{
|
||||
fr = element.value;
|
||||
}
|
||||
}
|
||||
|
||||
// Function called when % effectiveness is changed, to make sure a valid number is selected
|
||||
function effeChange(){
|
||||
let element = document.getElementById("effe");
|
||||
if(element.value > 100){
|
||||
alert("There cannot be more than 100% efficient collisions! ");
|
||||
element.value = eff*100;
|
||||
}
|
||||
else if(element.value < 0){
|
||||
alert("There cannot be less than 0% effecient collisions! ");
|
||||
element.value = eff*100;
|
||||
}else{
|
||||
eff = element.value/100;
|
||||
}
|
||||
}
|
||||
|
||||
// Function called to reset the dropdown menus when particles are added
|
||||
function reloadDropdowns(){
|
||||
|
||||
let xSelect = document.getElementById("graphx");
|
||||
for(let i = 0; i < xSelect.options.length; i++){
|
||||
xSelect.options.remove(i);
|
||||
i--;
|
||||
}
|
||||
|
||||
let ySelect = document.getElementById("graphy");
|
||||
for(let j = 0; j < ySelect.options.length; j++){
|
||||
ySelect.options.remove(j);
|
||||
j--;
|
||||
}
|
||||
|
||||
let xtOption = document.createElement("option");
|
||||
xtOption.text = "Time"
|
||||
xtOption.value = "measurement"
|
||||
|
||||
let xeOption = document.createElement("option");
|
||||
xeOption.text = "Total Kinetic Energy"
|
||||
xeOption.value = "ekt"
|
||||
|
||||
let ytOption = document.createElement("option");
|
||||
ytOption.text = "Time"
|
||||
ytOption.value = "measurement"
|
||||
|
||||
let yeOption = document.createElement("option");
|
||||
yeOption.text = "Total Kinetic Energy"
|
||||
yeOption.value = "ekt"
|
||||
|
||||
xSelect.options.add(xtOption, 0);
|
||||
xSelect.options.add(xeOption, 1);
|
||||
|
||||
ySelect.options.add(ytOption, 1);
|
||||
ySelect.options.add(yeOption, 0);
|
||||
|
||||
particles.forEach((elem, i) =>{
|
||||
let temp = document.createElement("option");
|
||||
let temp2 = document.createElement("option");
|
||||
temp.text = "Particle " + (i+1).toString() + " Kinetic Energy"
|
||||
temp.value = i+1;
|
||||
temp2.text = "Particle " + (i+1).toString() + " Kinetic Energy"
|
||||
temp2.value = i+1;
|
||||
xSelect.options.add(temp, xSelect.options.length-1);
|
||||
ySelect.options.add(temp2, ySelect.options.length-1);
|
||||
})
|
||||
}
|
||||
|
||||
function setVelocity(event){
|
||||
let x = event.clientX-25;
|
||||
let y = event.clientX-25;
|
||||
while(mouseIsDown){
|
||||
console.log(x);
|
||||
}
|
||||
}
|
||||
|
||||
function doMouseDown(event){
|
||||
mouseIsDown = true;
|
||||
setVelocity(event);
|
||||
}
|
||||
|
||||
function doMouseUp(event){
|
||||
alert();
|
||||
mouseIsDown = false;
|
||||
}
|
||||
BIN
wallhit.mp3
Normal file
BIN
wallhit.mp3
Normal file
Binary file not shown.
Reference in New Issue
Block a user