215 lines
7.4 KiB
HTML
215 lines
7.4 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 5-3
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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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width: 100px;
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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">1 Mass</button>
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<div class="dropdown-content">
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<button onclick="Blocks(2)">1 Mass</button>
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<button onclick="Blocks(3)">2 Masses</button>
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<button onclick="Blocks(4)">3 Masses</button>
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<button onclick="Blocks(5)">4 Masses</button>
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<button onclick="Blocks(6)">5 Masses</button>
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<button onclick="Blocks(7)">6 Masses</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 nnn = 1;
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var nn = nnn + 1;
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var mm = new Array(nn);
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var a = new Array (nn);
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var mmax = 350;
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nmax = nn;
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var yy = new Array(nn + 1);
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var xPos = -50;
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var yPos = -90;
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var m = 1;
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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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for (k = 1; k <= nn - 1; k++)
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{
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mm[k] = 80 / Math.sqrt(2 - 2 * Math.cos((k - 1/2) * Math.PI / (2*nn-1)));
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a[k] = 3 / nn;
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}
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var y = new Array(nn);
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for (i = 0; i <= nn - 1; i++)
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{
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y[i] = new Array(nn + 1);
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for (j = 0; j <= nn; j++)
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{
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y[i][j] = new Array(Math.round(mm[1] + 1));
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for (k = 0; k <= mm[1]; k++)
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{
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y[i][j][k] = a[i]*8*Math.sin(i* Math.PI * j / (2*nn-1)) * Math.sin(2 * Math.PI * (k - 1) / mm[i]);
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}
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}
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}
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function Blocks(num)
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{
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nn = num;
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console.log(num);
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btn.textContent = (num - 1) + " Masses";
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nmax = nn;
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for (k = 1; k <= nn - 1; k++)
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{
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mm[k] = 80 / Math.sqrt(3 - 2 * Math.cos(k * Math.PI / nn));
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a[k] = 2 / nn;
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}
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y = new Array(nn);
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for (i = 0; i <= nn - 1; i++)
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{
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y[i] = new Array(nn);
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for (j = 0; j <= nn; j++)
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{
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y[i][j] = new Array(Math.round(mm[1]));
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for (k = 0; k <= mm[1]; k++)
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{
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y[i][j][k] = a[i]*8*Math.sin((2*i-1)* Math.PI * (j) / (2*nn-1)) * Math.sin(2 * Math.PI * (k - 1) / mm[i]);
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}
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}
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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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setTimeout(Update, 1000/60)
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}
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function Draw()
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{
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for (n = 0; n < nn + 1; n++)
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{
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yy[n] = 160;
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for (k = 1; k < nn; k++)
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{
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yy[n] += y[k][n][m % Math.round(mm[k])];
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}
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}
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for (n = 0; n < nmax; n++)
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{
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ctx.beginPath();
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ctx.moveTo(10 + 80 * n / nmax + xPos, yy[n] + yPos);
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ctx.lineTo(10 + 80*(n+1)/nmax + xPos, yy[n+1] + yPos);
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ctx.stroke();
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for (k = 1; k < nn; k++)
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{
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ctx.beginPath();
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ctx.moveTo(10 + 80 * n/nmax + xPos, yPos + k*160/nn + y[k][n][m % Math.round(mm[k])]);
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ctx.lineTo(10 + 80*(n+1)/nmax + xPos,yPos+ k*160/nn+ y[k][n+1][m % Math.round(mm[k])]);
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ctx.stroke();
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}
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}
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for (n = 1; n < nmax; n++)
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{
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ctx.fillStyle = "#000000";
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ctx.beginPath();
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ctx.arc(10 + 80 * n/nmax + xPos, yPos + yy[n], 2, 0, Math.PI * 2);
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ctx.fill();
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for (k = 1; k < nn; k++)
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{
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ctx.fillStyle = "#000000";
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ctx.beginPath();
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ctx.arc(10 + 80 * n/nmax + xPos, yPos + k * 160/nn + y[k][n][m % Math.round(mm[k])], 2, 0, Math.PI * 2);
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ctx.fill();
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}
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}
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ctx.beginPath();
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ctx.moveTo(90 + xPos, c.height);
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ctx.lineTo(90 + xPos, -c.height);
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ctx.stroke();
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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> |