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63 lines
2.0 KiB
HTML
63 lines
2.0 KiB
HTML
<!DOCTYPE HTML>
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<title>Canvas test: 2d.path.arc.scale.1</title>
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<!-- Testing: Non-uniformly scaled arcs are the right shape -->
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<script src="/MochiKit/MochiKit.js"></script>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" href="/tests/SimpleTest/test.css">
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<body>
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<canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
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<script>
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function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
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var pixel = ctx.getImageData(x, y, 1, 1);
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var pr = pixel.data[0],
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pg = pixel.data[1],
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pb = pixel.data[2],
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pa = pixel.data[3];
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ok(r-d <= pr && pr <= r+d &&
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g-d <= pg && pg <= g+d &&
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b-d <= pb && pb <= b+d &&
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a-d <= pa && pa <= a+d,
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"pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
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}
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SimpleTest.waitForExplicitFinish();
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MochiKit.DOM.addLoadEvent(function () {
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var canvas = document.getElementById('c');
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var ctx = canvas.getContext('2d');
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ctx.fillStyle = '#f00';
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ctx.fillRect(0, 0, 100, 50);
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ctx.scale(2, 0.5);
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ctx.fillStyle = '#0f0';
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ctx.beginPath();
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ctx.arc(25, 50, 56, 0, 2*Math.PI, false);
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ctx.fill();
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ctx.fillStyle = '#f00';
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ctx.beginPath();
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ctx.moveTo(-25, 50);
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ctx.arc(-25, 50, 24, 0, 2*Math.PI, false);
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ctx.moveTo(75, 50);
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ctx.arc(75, 50, 24, 0, 2*Math.PI, false);
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ctx.moveTo(25, -25);
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ctx.arc(25, -25, 24, 0, 2*Math.PI, false);
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ctx.moveTo(25, 125);
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ctx.arc(25, 125, 24, 0, 2*Math.PI, false);
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ctx.fill();
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isPixel(ctx, 0,0, 0,255,0,255, "0,0", "0,255,0,255", 0);
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isPixel(ctx, 50,0, 0,255,0,255, "50,0", "0,255,0,255", 0);
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isPixel(ctx, 99,0, 0,255,0,255, "99,0", "0,255,0,255", 0);
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isPixel(ctx, 0,25, 0,255,0,255, "0,25", "0,255,0,255", 0);
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isPixel(ctx, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 0);
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isPixel(ctx, 99,25, 0,255,0,255, "99,25", "0,255,0,255", 0);
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isPixel(ctx, 0,49, 0,255,0,255, "0,49", "0,255,0,255", 0);
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isPixel(ctx, 50,49, 0,255,0,255, "50,49", "0,255,0,255", 0);
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isPixel(ctx, 99,49, 0,255,0,255, "99,49", "0,255,0,255", 0);
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SimpleTest.finish();
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});
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</script>
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