212 lines
7.1 KiB
HTML
212 lines
7.1 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 4-2
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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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.dropbtn {
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background-color: #04AA6D;
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color: white;
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padding: 16px;
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font-size: 16px;
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border: none;
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}
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.dropdown {
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position: absolute;
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display: inline-block;
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}
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.dropdown-content {
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display: none;
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position: relative;
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background-color: #f1f1f1;
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box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
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z-index: 1;
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}
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.dropdown-content button {
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color: black;
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padding: 12px 16px;
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text-decoration: none;
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display: block;
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}
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.dropdown-content a:hover {background-color: #ddd;}
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.dropdown:hover .dropdown-content {display: block;}
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.dropdown:hover .dropbtn {background-color: #3e8e41;}
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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;"></canvas>
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<div class="dropdown">
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<button class="dropbtn" id="btn">Mode 1</button>
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<div class="dropdown-content">
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<button onclick="Cases(1)">Mode 1</button>
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<button onclick="Cases(2)">Mode 2</button>
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<button onclick="Cases(3)">Mode 3</button>
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<button onclick="Cases(4)">Mode 4</button>
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<button onclick="Cases(5)">Mode 5</button>
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<button onclick="Cases(6)">Mode 6</button>
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</div>
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</div>
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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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var btn = document.getElementById("btn");
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c.width = window.innerWidth;
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c.height = window.innerHeight;
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var xPos = 0;
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var yPos = 0;
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var h = [1/2, 1, 1/2, -1/2, -1, -1/2];
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var d = [0, 0, 0, 0, 0, 0];
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var amp = Math.PI / 24;
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var l = 20;
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var a = 30;
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var omega = .5;
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var t = 0;
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var dt = .03;
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var j = 1;
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var em = 20;
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var bm = 9;
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var cm = -1;
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var dm = 1;
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var o = Math.sqrt(em - 2 * bm * Math.cos(j * Math.PI/3) - 2 * cm * Math.cos(2 * j * Math.PI/3) - dm * Math.cos(j * Math.PI));
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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 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 Cases(num)
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{
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btn.textContent = "Mode " + num;
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if (num == 1)
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{
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Case1();
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} else if (num == 2)
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{
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Case2();
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} else if (num == 3)
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{
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Case3();
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} else if (num == 4)
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{
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Case4();
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} else if (num == 5)
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{
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Case5();
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} else if (num == 6)
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{
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Case6();
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}
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}
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function Case1()
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{
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h = [1, 1/2, -1/2, -1, -1/2, 1/2];
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t = 0;
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j = 1;
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}
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function Case2()
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{
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h = [-1, 1/2, 1/2, -1, 1/2, 1/2];
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t = 0;
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j = 3;
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}
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function Case3()
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{
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h = [1, -1, 1, -1, 1, -1];
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t = 0;
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j = 3;
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}
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function Case4()
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{
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h = [0, 1, 1, 0, -1, -1];
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t = 0;
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j = 1;
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}
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function Case5()
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{
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h = [0, -1, 1, 0, -1, 1];
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t = 0;
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j = 3;
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}
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function Case6()
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{
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h = [1, 1, 1, 1, 1, 1];
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t = 0;
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j = 0;
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}
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function Update()
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{
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o = Math.sqrt(em - 2 * bm * Math.cos(j * Math.PI/3) - 2 * cm * Math.cos(2 * j * Math.PI/3) - dm * Math.cos(j * Math.PI));
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Clear(ctx);
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theta = 0;
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for (i = 0; i < 6; i++)
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{
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d[i] = h[i] * Math.sin(omega * o * t) * amp;
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ctx.beginPath();
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ctx.moveTo(0, 0);
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ctx.lineTo(l * Math.cos(theta), l * Math.sin(theta));
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ctx.lineTo(l * Math.cos(theta) + l * Math.cos(theta + (d[i]/2)), l * Math.sin(theta) + l * Math.sin(theta + (d[i]/2)));
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ctx.lineTo(l * Math.cos(theta) + l * Math.cos(theta + (d[i]/2)) + l * Math.cos(theta + d[i]), l * Math.sin(theta) + l * Math.sin(theta + (d[i]/2)) + l * Math.sin(theta + d[i]));
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ctx.stroke();
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ctx.fillStyle = "#ffffff";
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ctx.beginPath();
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ctx.arc(l * Math.cos(theta) + l * Math.cos(theta + (d[i]/2)) + l * Math.cos(theta + d[i]), l * Math.sin(theta) + l * Math.sin(theta + (d[i]/2)) + l * Math.sin(theta + d[i]), 5, 0, Math.PI * 2);
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ctx.fill();
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ctx.beginPath();
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ctx.arc(l * Math.cos(theta) + l * Math.cos(theta + (d[i]/2)) + l * Math.cos(theta + d[i]), l * Math.sin(theta) + l * Math.sin(theta + (d[i]/2)) + l * Math.sin(theta + d[i]), 5, 0, Math.PI * 2);
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ctx.stroke();
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theta += Math.PI/3;
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}
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t += dt;
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setTimeout(Update, 1000/60)
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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> |