79 lines
2.0 KiB
HTML
79 lines
2.0 KiB
HTML
<!doctype html>
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<html>
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<head>
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<script src="../../resources/js-test-pre.js"></script>
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</head>
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<body>
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<script>
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description("Series of tests to ensure correct results of the winding rule.");
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var tmpimg = document.createElement('canvas');
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tmpimg.width = 200;
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tmpimg.height = 200;
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ctx = tmpimg.getContext('2d');
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// Create the image for blending test with images.
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var img = document.createElement('canvas');
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img.width = 100;
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img.height = 100;
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var imgCtx = img.getContext('2d');
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function pixelDataAtPoint()
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{
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return ctx.getImageData(50, 50, 1, 1).data;
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}
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function checkResult(expectedColors, sigma) {
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for (var i = 0; i < 4; i++)
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shouldBeCloseTo("pixelDataAtPoint()[" + i + "]", expectedColors[i], sigma);
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}
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// Execute test.
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function prepareTestScenario() {
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debug('Testing default clip');
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ctx.fillStyle = 'rgb(255,0,0)';
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ctx.fillRect(0, 0, 100, 100);
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ctx.fillStyle = 'rgb(0,255,0)';
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ctx.beginPath();
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ctx.rect(0, 0, 100, 100);
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ctx.rect(25, 25, 50, 50);
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ctx.clip();
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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checkResult([0, 255, 0, 255], 5);
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debug('');
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debug('Testing nonzero clip');
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ctx.fillStyle = 'rgb(255,0,0)';
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ctx.fillRect(0, 0, 100, 100);
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ctx.fillStyle = 'rgb(0,255,0)';
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ctx.beginPath();
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ctx.rect(0, 0, 100, 100);
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ctx.rect(25, 25, 50, 50);
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ctx.clip('nonzero');
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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checkResult([0, 255, 0, 255], 5);
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debug('');
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debug('Testing evenodd clip');
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ctx.fillStyle = 'rgb(255,0,0)';
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ctx.fillRect(0, 0, 100, 100);
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ctx.fillStyle = 'rgb(0,255,0)';
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ctx.beginPath();
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ctx.rect(0, 0, 100, 100);
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ctx.rect(25, 25, 50, 50);
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ctx.clip('evenodd');
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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checkResult([255, 0, 0, 255], 5);
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debug('');
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}
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// Run test and allow variation of results.
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prepareTestScenario();
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</script>
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<script src="../../resources/js-test-post.js"></script>
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</body> |