169 lines
6.4 KiB
HTML
169 lines
6.4 KiB
HTML
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<!--
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This work is licensed under CC BY-NC-ND 4.0
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Link to license: http://creativecommons.org/licenses/by-nc-nd/4.0/
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Attribute to Russell Georgi
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-->
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<html>
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<head>
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<title>
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Waves 4-1
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</title>
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<style>
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html, body {
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width: 100%;
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height: 100%;
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margin: 0px;
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border: 0;
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overflow: hidden;
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display: block;
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}
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canvas {
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position: absolute;
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}
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</style>
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</head>
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<body>
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<canvas id="myCanvas" width="1" height="1" style="border:1px solid #ffffff;">
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Your browser does not support the HTML5 canvas tag.</canvas>
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<script>
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var c = document.getElementById("myCanvas");
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var ctx = c.getContext("2d");
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ctx.canvas.width = window.innerWidth;
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ctx.canvas.height = window.innerHeight;
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//var bottom = -50;
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//var side = 300;
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//var t = 1;
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//var ii = 800 * t;
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var tm = .1;
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var om = .1;
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var dom = .02;
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var a1 = 1;
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var a2 = 0;
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var b1 = 0;
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var b2 = .4;
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//var asp = 1;
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var i = 1;
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var y1 = 0;
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var y2 = 0;
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var x1 = 0;
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var x2 = 0;
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var xPos = -150;
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var yPos = -350;
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var theta11 = 0;
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var theta21 = 0;
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var theta12 = 0;
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var theta22 = 0;
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ctx.translate(ctx.canvas.width / 2, ctx.canvas.height / 2);
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//ctx.scale(2/3, 2/3);
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function Clear(ctx)
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{
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ctx.clearRect(-c.width, -c.height, c.width * 2, c.height * 2);
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}
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function Update()
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{
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theta11 = tm * (a1 * Math.cos(om*i) + b1 * Math.sin(om*i));
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theta21 = tm * (a1 * Math.cos(om*i) + b1 * Math.sin(om*i));
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theta12 = tm * (a2 * Math.cos((om + dom)*i) + b2 * Math.sin((om + dom)*i));
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theta22 = tm * (-a2 * Math.cos((om + dom)*i) - b2 * Math.sin((om + dom)*i));
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var theta1 = theta11 + theta12;
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var theta2 = theta21 + theta22;
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theta2 = tm * (a1 * Math.cos(om*i) - a2 * Math.cos((om+dom)*i) + b1* Math.sin(om*i) - b2*Math.sin((om+dom)*i));
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y1 = yPos + 220 + 200 * Math.cos(theta1);
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y2 = yPos + 220 + 200 * Math.cos(theta2);
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x1 = xPos + 100 - 200 * Math.sin(theta1);
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x2 = xPos + 200 - 200 * Math.sin(theta2);
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Draw();
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i += 1;
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setTimeout(Update, 1000/60)
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}
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function Draw()
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{
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Clear(ctx);
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ctx.beginPath();
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ctx.moveTo(x1, y1);
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ctx.lineTo(xPos + 100, yPos + 220);
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ctx.stroke();
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ctx.beginPath();
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ctx.moveTo(x2, y2);
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ctx.lineTo(xPos + 200, yPos + 220);
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ctx.stroke();
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drawSpring(1, 3, x2 - x1, 5, 7, x1, y1, 0.1, y2 - y1);
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ctx.fillStyle = "#ffffff";
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ctx.beginPath();
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ctx.arc(x1, y1, 7, 0, Math.PI * 2);
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ctx.fill();
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ctx.beginPath();
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ctx.arc(x2, y2, 7, 0, Math.PI * 2);
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ctx.fill();
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ctx.beginPath();
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ctx.arc(x1, y1, 7, 0, Math.PI * 2);
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ctx.stroke();
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ctx.beginPath();
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ctx.arc(x2, y2, 7, 0, Math.PI * 2);
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ctx.stroke();
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var y11 = yPos + 650 - 200 * Math.cos(theta11);
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var y21 = yPos + 650 - 200 * Math.cos(theta21);
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var x11 = xPos + 100 - 200 * Math.sin(theta11);
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var x21 = xPos + 200 - 200 * Math.sin(theta21);
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ctx.beginPath();
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ctx.arc(x11, y11, 7, 0, Math.PI * 2);
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ctx.stroke();
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ctx.beginPath();
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ctx.arc(x21, y21, 7, 0, Math.PI * 2);
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ctx.stroke();
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var y12 = yPos + 680 - 200 * Math.cos(theta12);
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var y22 = yPos + 680 - 200 * Math.cos(theta22);
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var x12 = xPos + 100 - 200 * Math.sin(theta12);
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var x22 = xPos + 200 - 200 * Math.sin(theta22);
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ctx.beginPath();
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ctx.arc(x12, y12, 7, 0, Math.PI * 2);
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ctx.stroke();
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ctx.beginPath();
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ctx.arc(x22, y22, 7, 0, Math.PI * 2);
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ctx.stroke();
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}
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function drawSpring(a, b, xSize, ySize, numLoops, x, y, tStep, deltaY)
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{
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var tStart = Math.PI / 2;
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var tEnd = (3 * Math.PI / 2) + (2 * Math.PI * numLoops);
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var xEnd = a * tEnd - b * Math.sin(tEnd);
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var yEnd = a + b;
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var xFactor = xSize / xEnd;
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var yFactor = ySize / yEnd;
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var xShift = x - a * (Math.PI / 2) + b * Math.sin(Math.PI / 2);
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var yShift = y - a + b * Math.cos(Math.PI / 2);
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var slope = deltaY / xSize;
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for (p = tStart; p <= tEnd; p += tStep)
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{
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ctx.beginPath();
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ctx.moveTo(xShift + xFactor * (a * p - b * Math.sin(p)), yShift + yFactor * (a - b * Math.cos(p)) + slope * (a * p - b * Math.sin(p)));
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ctx.lineTo(xShift + xFactor * (a * (p + tStep) - b * Math.sin(p + tStep)), yShift + yFactor * (a - b * Math.cos(p + tStep)));
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ctx.stroke();
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}
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}
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window.addEventListener('resize', function(event) {
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c.width = window.innerWidth;
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c.height = window.innerHeight;
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ctx.translate(c.width / 2, c.height / 2);
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ctx.scale(1, 1);
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}, true);
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Update();
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</script>
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</body>
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<p xmlns:cc="http://creativecommons.org/ns#" style="font-size: 1vw; bottom: 0px; position: absolute;">
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This work is licensed under
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<a href="http://creativecommons.org/licenses/by-nc-nd/4.0/?ref=chooser-v1" target="_blank" rel="license noopener noreferrer" style="display:inline-block;">CC BY-NC-ND 4.0<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/cc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/by.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nd.svg?ref=chooser-v1"></a></p>
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</html> |