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With the newly supported fuzzy matching in our test-web runner, we can now define the expected maximum color channel and pixel count errors per failing test and set a baseline they should not exceed. The figures I added to these tests all come from my macOS M4 machine. Most discrepancies seem to come from color calculations being slightly off.
41 lines
1.2 KiB
HTML
41 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<link rel="match" href="../expected/canvas-fillstyle-gradients-ref.html" />
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<meta name="fuzzy" content="maxDifference=0-1;totalPixels=0-6">
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<style>
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* {
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margin: 0;
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}
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body {
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background-color: white;
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}
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</style>
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<canvas width=800 height=600 id="canvas"></canvas>
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<script>
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const canvas = document.getElementById("canvas");
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const ctx = canvas.getContext("2d");
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// Create a radial gradient
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// The inner circle is at x=110, y=90, with radius=30
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// The outer circle is at x=100, y=100, with radius=70
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let gradient = ctx.createRadialGradient(110, 90, 30, 100, 100, 70);
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gradient.addColorStop(0, "pink");
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gradient.addColorStop(0.9, "white");
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gradient.addColorStop(1, "green");
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ctx.fillStyle = gradient;
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ctx.fillRect(20, 20, 160, 160);
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// Create a linear gradient
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// The start gradient point is at x=20, y=0
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// The end gradient point is at x=220, y=0
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gradient = ctx.createLinearGradient(220, 0, 420, 0);
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gradient.addColorStop(0, "green");
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gradient.addColorStop(0.5, "cyan");
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gradient.addColorStop(1, "green");
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ctx.fillStyle = gradient;
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ctx.fillRect(220, 20, 200, 100);
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</script>
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