Created
November 12, 2014 01:08
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| <html> | |
| <head> | |
| <script src="https://code.jquery.com/jquery-2.1.1.min.js"></script> | |
| </head> | |
| <body> | |
| <canvas id="screen" width=640 height=640></canvas> | |
| <script> | |
| var step = 0; | |
| function render(x, y, t) { | |
| var m = parseInt((Math.cos((x%4)/16.0*Math.PI)+(60-t%60.0)/60.0)*8) | |
| var n = parseInt((Math.cos((y%4)/16.0*Math.PI)+(60-t%60.0)/60.0)*8) | |
| // (t/30.0) | |
| xyes = m == parseInt(y/1.5) || m == parseInt((y+8)/1.5) || m == parseInt((y+16)/1.5) || m == parseInt((y-8)/1.5) | |
| yyes = n == parseInt(x/1.5) || n == parseInt((x+8)/1.5) || n == parseInt((x+16)/1.5) || n == parseInt((x-8)/1.5) | |
| return [xyes?255:0, yyes?0:255, 255, (xyes||yyes)?0.5:0.01]; | |
| } | |
| var c=document.getElementById("screen"); | |
| var ctx=c.getContext("2d"); | |
| ctx.fillStyle="#000000"; | |
| ctx.fillRect(0, 0, 640, 640); | |
| var blocksize=8; | |
| function drawScreen() { | |
| step += 1 | |
| for (x = 0; x < 640/blocksize; x++) { | |
| for (y = 0; y < 640/blocksize; y++) { | |
| posX = x * blocksize; | |
| posY = y * blocksize; | |
| color = render(x%2, y%2, step); | |
| ctx.fillStyle = "rgba(" + color[0] + "," + color[1] + "," + color[2] + "," + color[3] + ")"; | |
| ctx.fillRect(posX, posY, blocksize, blocksize); | |
| } | |
| } | |
| } | |
| $(function() { | |
| setInterval(drawScreen, 33); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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