Created
September 12, 2016 23:14
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Draws SMPTE test color bars on a Canvas element.
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// Takes a canvas context2d and draws the SMPTE test color bars on it. | |
function drawSMPTEColorBars(c, x, y, w, h) { | |
c.save(); | |
c.translate(x, y); c.scale(w / 1920, h / 1080); | |
var g = c.createLinearGradient(445, 0, 1680, 0); | |
g.addColorStop(0, '#000000'); | |
g.addColorStop(1, '#ffffff'); | |
c.fillStyle='#000000'; c.fillRect(0, 0, 1920, 1080); | |
c.fillStyle='#666666'; c.fillRect(0, 0, 240, 630); | |
c.fillStyle='#bfbfbf'; c.fillRect(240, 0, 205, 630); | |
c.fillStyle='#bfbf00'; c.fillRect(445, 0, 206, 630); | |
c.fillStyle='#00bfbf'; c.fillRect(651, 0, 206, 630); | |
c.fillStyle='#00bf00'; c.fillRect(857, 0, 206, 630); | |
c.fillStyle='#bf00bf'; c.fillRect(1063, 0, 206, 630); | |
c.fillStyle='#bf0000'; c.fillRect(1269, 0, 206, 630); | |
c.fillStyle='#0000bf'; c.fillRect(1475, 0, 205, 630); | |
c.fillStyle='#666666'; c.fillRect(1680, 0, 240, 630); | |
c.fillStyle='#00ffff'; c.fillRect(0, 630, 240, 90); | |
c.fillStyle='#00214c'; c.fillRect(240, 630, 205, 90); | |
c.fillStyle='#bfbfbf'; c.fillRect(445, 630, 1235, 90); | |
c.fillStyle='#0000ff'; c.fillRect(1680, 630, 240, 90); | |
c.fillStyle='#ffff00'; c.fillRect(0, 720, 240, 90); | |
c.fillStyle='#32006a'; c.fillRect(240, 720, 205, 90); | |
c.fillStyle=g; c.fillRect(445, 720, 1235, 90); | |
c.fillStyle='#ff0000'; c.fillRect(1680, 720, 240, 90); | |
c.fillStyle='#262626'; c.fillRect(0, 810, 240, 270); | |
c.fillStyle='#000000'; c.fillRect(240, 810, 309, 270); | |
c.fillStyle='#ffffff'; c.fillRect(549, 810, 411, 270); | |
c.fillStyle='#050505'; c.fillRect(1268, 810, 69, 270); | |
c.fillStyle='#0a0a0a'; c.fillRect(1405, 810, 69, 270); | |
c.fillStyle='#262626'; c.fillRect(1680, 810, 240, 270); | |
c.restore(); | |
} |
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