Grid, Springs and Chagres

by sikuda

HTML

<canvas id="myCanvas" width="640" height="480" style="border:1px solid #d3d3d3;">Your browser does not support the HTML5 canvas tag.</canvas>

JavaScript

var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
var dt = 0.01;
var timeFrame = 1;
var width2 = 320,
    height2 = 240,
    scaleX = 1,
    scaleY = 1;
var centerX = width2;
var centerY = height2;
var radiusBall = 10;

//var arrayBalls = [
//new ball(100, 100, 1000, "0"),
//new ball(400, 150, 1000, "1")];
// var arraySprings = [
// new spring(0, 1, 10)];


//var arrayBalls = [
//new ball("0", 1000, 100, 100),
//new ball("1", 1000, 300, 150),
//new ball("2", 1000, 400, 100)];

//var arraySprings = [
//new spring("0", "1", 1),
//new spring("1", "2", 1),
//new spring("0", "2", 1)];

var arrayBalls = [
new ball(1, 1.000, 9.985285, 8.823873),
new ball(10, 1.000, 7.905390, 7.792477),
new ball(11, 1.000, 5.291587, 7.810202),
new ball(12, 1.000, 3.512660, 6.676054),
new ball(13, 1.000, 2.848387, 5.390772),
new ball(14, 1.000, 2.311177, 4.326659),
new ball(15, 1.000, 1.622048, 3.264550),
new ball(16, 1.000, 0.864816, 2.486092),
new ball(17, 1.000, 7.578889, 4.648953),
new ball(18, 1.000, 6.969821, 5.749377),
new ball(19, 1.000, 4.961640, 7.189286),
new ball(2, 1.000, 8.690748, 8.996515),
new ball(20, 1.000, 3.556436, 7.908809),
new ball(21, 1.000, 2.537188, 7.779252),
new ball(22, 1.000, 1.724301, 7.009165),
new ball(23, 1.000, 1.110612, 6.018438),
new ball(24, 1.000, 0.332130, 5.415339),
new ball(25, 1.000, 8.462597, 4.200174),
new ball(26, 1.000, 7.899139, 5.485920),
new ball(27, 1.000, 6.550674, 7.821706),
new ball(28, 1.000, 4.423056, 9.841635),
new ball(29, 1.000, 3.266487, 10.231663),
new ball(3, 1.000, 6.007623, 8.498511),
new ball(30, 1.000, 2.226284, 10.131976),
new ball(31, 1.000, 1.493764, 9.371593),
new ball(32, 1.000, 0.636837, 9.338010),
new ball(33, 1.000, 9.602882, 4.897362),
new ball(34, 1.000, 9.070342, 6.545641),
new ball(35, 1.000, 7.610553, 8.968997),
new ball(36, 1.000, 6.124685, 10.631741),
new ball(37, 1.000, 4.474723, 12.125851),
new ball(38, 1.000, 3.603963, 12.734021),
new ball(39, 1.000, 2.847621, 12.337795),
new...