Created
September 2, 2013 17:10
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| <html> | |
| <head> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | |
| <title>RGB Colors 2</title> | |
| <script> | |
| function onload() { | |
| var c = document.getElementById("pane"); | |
| pane(c); | |
| } | |
| function pane(canvas) { | |
| var xd = 0.125; | |
| var yd = 0.25; | |
| var xr = xd * 0; | |
| var yr = yd * 2; | |
| var xg = xd * Math.sqrt(3); | |
| var yg = yd * (-1); | |
| var xb = xd * (-1 * Math.sqrt(3)); | |
| var yb = yd * (-1); | |
| var xo = canvas.width / 44; | |
| var yo = canvas.height / 2; | |
| var ctx = canvas.getContext("2d"); | |
| var dot = function (x, y, r, g, b) { | |
| ctx.fillStyle = "rgb(" + r + "," + g + "," + b + ")"; | |
| ctx.beginPath(); | |
| ctx.arc(x, y, 4, 0, 2*Math.PI); | |
| ctx.fill(); | |
| }; | |
| for (var r = 0; r < 255; r += 17) { | |
| for (var g = 0; g < 255; g += 17) { | |
| for (var b = 0; b < 255; b += 17) { | |
| z = (r + g + b) / 17; | |
| x = xo * (z + 1) + (xr * r) + (xg * g) + (xb * b); | |
| y = yo + (yr * r) + (yg * g) + (yb * b); | |
| dot(x, y, r, g, b); | |
| } | |
| } | |
| } | |
| } | |
| </script> | |
| </head> | |
| <body onload="onload()" style="margin: 0; padding: 0; background-color: #999999;"> | |
| <h1 style="color: white; padding: 0 0.5em; margin: 0;">RGB Colors 2</h1> | |
| <canvas id="pane" width="1800" height="320" style="background-color: #777777;"></canvas> | |
| </body> | |
| </html> |
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http://sample.michinobu.jp/rgbcolors2.html