323 lines
10 KiB
HTML
323 lines
10 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: Rainbow
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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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form {
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position: relative;
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}
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.slideContainer {
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position: relative;
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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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<form>
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<label for="red">Red</label>
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<input type="checkbox" id="red" onclick="redClick()">
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<br>
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<label for="blue">Blue</label>
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<input type="checkbox" id="blue" onclick="blueClick()">
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<br>
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<label for="lines">Rainbow angle</label>
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<input type="checkbox" id="lines" onclick="linesClick()">
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</form>
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<div class="slidecontainer">
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<t>Ray density</t>
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<input type="range" min="0.25" max="2.5" value="0.5" step = "0.01" id="slider">
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<br>
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<t>X position</t>
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<input type="range" min="-120" max="120" value="0" step = "1" id="xSlider">
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<br>
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<t>Y position</t>
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<input type="range" min="-120" max="120" value="0" step = "1" id="ySlider">
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<br>
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<t>Zoom</t>
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<input type="range" min="-10" max="10" value="0" step = "1" id="zSlider">
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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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ctx.canvas.width = window.innerWidth;
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ctx.canvas.height = window.innerHeight;
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var nn = 1.35;
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var r = 75;
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var cl4 = "#ee0000";
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var cl17 = "#9999ff";
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var cl15 = "#000000";
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var red = false;
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var blue = false;
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var dtog = 0;
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var x0 = 0;
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var y0 = 0;
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var dy = 10;
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var nnn = 50;
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var xPos = 0;
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var yPos = 0;
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var slider = document.getElementById("slider");
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var xSlider = document.getElementById("xSlider");
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var ySlider = document.getElementById("ySlider");
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var density = 0.05;
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slider.oninput = function()
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{
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density = this.value / 10;
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}
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xSlider.oninput = function()
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{
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x0 = parseFloat(this.value);
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}
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ySlider.oninput = function()
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{
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y0 = parseFloat(this.value);
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}
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zSlider.oninput = function()
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{
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r = Math.pow(1.5, this.value) * 75;
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if (r < 50)
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{
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x0 = 2.5 * (50 - r);
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y0 = 1.8 * (50 - r);
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} else
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{
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x0 = 0;
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y0 = 0;
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}
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btog = 1;
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Clear(ctx);
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}
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ctx.translate(ctx.canvas.width / 2, ctx.canvas.height / 2);
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ctx.scale(1.5, -1.5);
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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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btog = 0;
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ctx.strokeStyle = "#000000";
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for (n = 0; n <= 101; n++)
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{
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ctx.beginPath();
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ctx.moveTo(xPos + x0 + r * Math.cos(Math.PI * n / nnn), yPos + y0 + r * Math.sin(Math.PI * n / nnn));
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ctx.lineTo(xPos + x0 + r * Math.cos(Math.PI * (n + 1) / nnn), yPos + y0 + r * Math.sin(Math.PI * (n + 1) / nnn));
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ctx.stroke();
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}
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for (h2 = 0; h2 <= 1; h2 += density)
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{
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if (red)
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{
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rline(r * h2, 1.332, cl4);
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}
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if (blue)
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{
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rline(r * h2, 1.35, cl17);
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}
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}
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if (btog == 1)
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{
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Clear(ctx);
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}
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if (dtog == 1)
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{
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//rline(r, 1.332, cl15);
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rrline(r, 1.332, cl15);
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//rline(r, 1.350, cl15);
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rrline(r, 1.350, cl15);
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}
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setTimeout(Update, 1000/60);
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}
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function rline(h, nn, cl)
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{
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if (h < r)
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{
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th = Math.atan(h / Math.sqrt(Math.pow(r, 2) - Math.pow(h, 2)));
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} else
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{
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th = Math.PI / 2;
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}
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sth = h/r;
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thp = Math.atan(sth / nn / Math.sqrt(1 - sth * sth / nn / nn));
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console.log(thp);
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console.log(Math.asin(sth / nn));
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ctx.strokeStyle = cl;
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ctx.beginPath();
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ctx.moveTo(-c.width, yPos + y0 + h);
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ctx.lineTo(xPos + x0 - Math.sqrt(r * r - h * h), yPos + y0 + h);
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ctx.stroke();
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xi1 = Math.PI + th - 2 * thp;
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ctx.beginPath();
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ctx.moveTo(xPos + x0 - r * Math.cos(xi1), yPos + y0 + r * Math.sin(xi1));
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ctx.lineTo(xPos + x0 - Math.sqrt(r * r - h * h), yPos + y0 + h);
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ctx.stroke();
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xi2 = th - 4 * thp;
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ctx.beginPath();
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ctx.moveTo(xPos + x0 - r * Math.cos(xi1), yPos + y0 + r * Math.sin(xi1));
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ctx.lineTo(xPos + x0 - r * Math.cos(xi2), yPos + y0 + r * Math.sin(xi2));
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ctx.stroke();
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xi3 = xi2 + th;
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ctx.beginPath();
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ctx.moveTo(xPos + x0 - r * Math.cos(xi2) - 350 * Math.cos(xi3), yPos + y0 + r * Math.sin(xi2) + 350 * Math.sin(xi3));
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ctx.lineTo(xPos + x0 - r * Math.cos(xi2), yPos + y0 + r * Math.sin(xi2));
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ctx.stroke();
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}
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function rrline(h, nn, cl)
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{
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sthp = 1/3/nn*3 ** (1/2) * (4 - nn ** 2) ** (1/2);
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thp = Math.atan(sthp / Math.sqrt(1 - sthp ** 2));
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sth = nn * sthp;
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th = Math.atan(sth / Math.sqrt(1 - sth ** 2));
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xi3 = 2 * th - 4 * thp;
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sthp1 = 1/15/nn * 15 ** (1/2) * (16 - nn ** 2) ** (1/2);
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thp1 = Math.atan(sthp1 / Math.sqrt(1 - sthp1 ** 2));
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sth1 = nn * sthp1;
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th1 = Math.atan(sth1 / Math.sqrt(1 - sth1 ** 2));
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xi2 = th1 - 4 * thp1;
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ctx.strokeStyle = cl;
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ctx.beginPath();
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ctx.moveTo(xPos + x0 - r * Math.cos(xi2) - 30 * Math.cos(xi3), yPos + y0 + r * Math.sin(xi2) + 30 * Math.sin(xi3));
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ctx.lineTo(xPos + x0 - r * Math.cos(xi2) - 350 * Math.cos(xi3), yPos + y0 + r * Math.sin(xi2) + 350 * Math.sin(xi3));
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ctx.stroke();
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console.log(Math.cos(th), Math.cos(thp) * nn / 2)
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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(1.5, -1.5);
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}, true);
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document.onkeydown = checkKey;
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function checkKey(e) {
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e = e || window.event;
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if (e.keyCode == '38') {
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yplus();
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}
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else if (e.keyCode == '40') {
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yminus();
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}
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else if (e.keyCode == '37') {
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xminus();
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}
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else if (e.keyCode == '39') {
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xplus();
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}
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else if (e.keyCode == '49') {
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//togglec();
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}
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else if (e.keyCode == '50') {
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toggled();
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}
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else if (e.keyCode == '51') {
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//togglee();
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}
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}
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function redClick()
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{
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checkBox = document.getElementById("red");
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red = checkBox.checked;
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Clear(ctx);
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}
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function blueClick()
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{
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checkBox = document.getElementById("blue");
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blue = checkBox.checked;
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Clear(ctx);
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}
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function linesClick()
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{
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checkBox = document.getElementById("blue");
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dtog = 1 - dtog;
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Clear(ctx);
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}
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function toggled()
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{
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console.log("toggled");
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dtog = 1 - dtog;
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btog = 1;
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Clear(ctx);
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}
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function zoomPlus()
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{
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r *= 1.5;
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if (r < 50)
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{
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x0 = 2.5 * (50 - r);
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y0 = 1.8 * (50 - r);
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} else
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{
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x0 = 0;
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y0 = 0;
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}
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btog = 1;
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Clear(ctx);
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}
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function zoomMinus()
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{
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r /= 1.5;
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if (r < 50)
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{
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x0 = 2.5 * (50 - r);
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y0 = 1.8 * (50 - r);
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} else
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{
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x0 = 0;
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y0 = 0;
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}
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btog = 1;
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Clear(ctx);
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}
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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> |