131 lines
5.2 KiB
HTML
131 lines
5.2 KiB
HTML
<!--
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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 10-2
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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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c.width = window.innerWidth;
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c.height = window.innerHeight;
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var mm1 = 25;
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var mm2 = 22;
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var mmax = 40;
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var nn1 = 18;
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var nn2 = 14;
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var m = 1;
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var nmax = 5 * nn1;
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var xPos = -50;
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var yPos = -50;
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ctx.translate(ctx.canvas.width / 2, ctx.canvas.height / 2)
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ctx.scale(3, -3);
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var y1 = new Array(nn1 + 1);
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var y3 = new Array(nn2 + 1);
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for (n = 0; n <= nn1; n++)
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{
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y1[n] = new Array()
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for (m = 0; m < mm1; m++)
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{
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y1[n][m] = 10 * Math.cos(2 * Math.PI * (n / nn1 - m / mm1));
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}
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}
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for (n = 0; n <= nn2; n++)
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{
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y3[n] = new Array()
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for (m = 0; m < mm2; m++)
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{
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y3[n][m] = 10 * Math.cos(2 * Math.PI * (n / nn2 - m / mm2));
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}
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}
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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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Clear(ctx);
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Draw();
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m += 1;
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console.log(m);
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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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ctx.strokeStyle = "#cccccc";
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ctx.lineWidth = 0.5;
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ctx.beginPath();
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ctx.moveTo(xPos + 5, yPos + 75);
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ctx.lineTo(xPos + 85 + 80 / nmax, yPos + 75);
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ctx.stroke();
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for (n = 0; n <= nmax; n++)
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{
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ctx.strokeStyle = "#000000";
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ctx.lineWidth = 1;
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ctx.beginPath();
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ctx.moveTo(xPos + 5 + 80 * n / nmax, yPos + y1[n % nn1][m % mm1] + 15);
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ctx.lineTo(xPos + 5 + 80 * (n + 1) / nmax, yPos + y1[(n + 1) % nn1][m % mm1] + 15);
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ctx.stroke();
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ctx.beginPath();
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ctx.moveTo(xPos + 5 + 80 * n / nmax, yPos + y3[n % nn2][m % mm2] + 40);
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ctx.lineTo(xPos + 5 + 80 * (n + 1) / nmax, yPos + y3[(n + 1) % nn2][m % mm2] + 40);
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ctx.stroke();
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ctx.beginPath();
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ctx.moveTo(xPos + 5 + 80 * n / nmax, yPos + y1[n % nn1][m % mm1] + y3[n % nn2][m % mm2] + 75);
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ctx.lineTo(xPos + 5 + 80 * (n + 1) / nmax, yPos + y1[(n + 1) % nn1][m % mm1] + y3[(n + 1) % nn2][m % mm2] + 75);
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ctx.stroke();
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ctx.strokeStyle = "#ff0000";
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ctx.beginPath();
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ctx.moveTo(xPos + 5 + 80 * n / nmax, yPos + 75 + 20 * Math.cos(Math.PI * (n / nn1 - n / nn2 - m / mm1 + m / mm2)));
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ctx.lineTo(xPos + 5 + 80 * (n + 1) / nmax, yPos + 75 + 20 * Math.cos(Math.PI * ((n + 1) / nn1 - (n + 1) / nn2 - m / mm1 + m / mm2)));
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ctx.stroke();
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ctx.beginPath();
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ctx.moveTo(xPos + 5 + 80 * n / nmax, yPos + 75 - 20 * Math.cos(Math.PI * (n / nn1 - n / nn2 - m / mm1 + m / mm2)));
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ctx.lineTo(xPos + 5 + 80 * (n + 1) / nmax, yPos + 75 - 20 * Math.cos(Math.PI * ((n + 1) / nn1 - (n + 1) / nn2 - m / mm1 + m / mm2)));
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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(3, -3)
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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>
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