163 lines
5.3 KiB
HTML
163 lines
5.3 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 10-1
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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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c.width = window.innerWidth;
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c.height = window.innerHeight;
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var h = 20;
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var dt = .08;
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var t = -1;
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var m = 1;
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var mmax = 100;
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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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function fnf(t)
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{
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var fd = 0;
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if (t >= 0)
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{
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fd = 1 - t;
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}
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if (t < 0)
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{
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fd = 1 + t;
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}
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if (t > 1)
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{
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fd = 0;
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}
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if (t < -1)
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{
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fd = 0;
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}
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return fd;
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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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if (m > mmax)
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{
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m = 1;
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t = -1;
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}
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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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xc = 5 + 15 * t;
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xc1 = 5 + 15 * (t - 1);
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xc2 = 5 + 15 * (t + 1);
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if (t < 0)
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{
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ctx.beginPath();
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ctx.moveTo(xPos + 5, yPos + 40 + h * fnf(-t));
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ctx.lineTo(xPos + xc2, yPos + 40);
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ctx.lineTo(xPos + 95, yPos + 40);
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ctx.stroke();
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}
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if (t >= 0 && t < 1)
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{
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ctx.beginPath();
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ctx.moveTo(xPos + 5, yPos + 40 + h * fnf(-t));
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ctx.lineTo(xPos + xc, yPos + 40 + h);
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ctx.lineTo(xPos + xc2, yPos + 40);
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ctx.lineTo(xPos + 95, yPos + 40);
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ctx.stroke();
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}
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if (t >= 1 && t < 5)
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{
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ctx.beginPath();
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ctx.moveTo(xPos + 5, yPos + 40);
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ctx.lineTo(xPos + xc1, yPos + 40);
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ctx.lineTo(xPos + xc, yPos + 40 + h);
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ctx.lineTo(xPos + xc2, yPos + 40);
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ctx.lineTo(xPos + 95, yPos + 40);
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ctx.stroke();
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}
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if (t >= 5 && t < 6)
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{
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ctx.beginPath();
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ctx.moveTo(xPos + 5, yPos + 40);
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ctx.lineTo(xPos + xc1, yPos + 40);
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ctx.lineTo(xPos + xc, yPos + 40 + h);
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ctx.lineTo(xPos + 95, yPos + 40 + h * fnf(6-t));
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ctx.stroke();
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}
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if (t >= 6 && t < 7)
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{
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ctx.beginPath();
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ctx.moveTo(xPos + 5, yPos + 40);
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ctx.lineTo(xPos + xc1, yPos + 40);
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ctx.lineTo(xPos + 95, yPos + 40 + h * fnf(6-t));
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ctx.stroke();
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}
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if (t >= 7 && t < 8)
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{
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ctx.beginPath();
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ctx.moveTo(xPos + 5, yPos + 40);
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ctx.lineTo(xPos + 95, yPos + 40);
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ctx.stroke();
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}
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ctx.beginPath();
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ctx.arc(xPos + 5, yPos + 40 + h * fnf(-t), 1, 0, Math.PI * 2);
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ctx.fill();
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t += dt;
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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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