| Index: LayoutTests/fast/canvas/canvas-arc-circumference.html
|
| diff --git a/LayoutTests/fast/canvas/canvas-arc-circumference.html b/LayoutTests/fast/canvas/canvas-arc-circumference.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..1a8695bb08d8fb5e607a0499a2c18d3e50d4cb29
|
| --- /dev/null
|
| +++ b/LayoutTests/fast/canvas/canvas-arc-circumference.html
|
| @@ -0,0 +1,59 @@
|
| +<!DOCTYPE html>
|
| +<html>
|
| +<head></head>
|
| +<body>
|
| +<canvas id="mycanvas" width="600" height="400"></canvas>
|
| +<script>
|
| +if (window.testRunner)
|
| + testRunner.dumpAsText(true);
|
| +
|
| +var canvas = document.getElementById('mycanvas');
|
| +var ctx = canvas.getContext('2d');
|
| +
|
| +ctx.lineWidth = 3;
|
| +ctx.strokeStyle = 'rgba(0, 0, 0, 0.5)';
|
| +
|
| +// 20 angles.
|
| +var sweepAngles = [
|
| + -123.7, -2.3, -2, -1, -0.3, -0.000001, 0, 0.000001, 0.3, 0.7,
|
| + 1, 1.3, 1.5, 1.7, 1.99999, 2, 2.00001, 2.3, 4.3, 3934723942837.3
|
| +];
|
| +for (var i = 0; i < sweepAngles.length; i++) {
|
| + sweepAngles[i] = sweepAngles[i] * Math.PI;
|
| +}
|
| +
|
| +var startAngles = [
|
| + -1, -0.5, 0, 0.5
|
| +]
|
| +for (var i = 0; i < startAngles.length; i++) {
|
| + startAngles[i] = startAngles[i] * Math.PI;
|
| +}
|
| +
|
| +var startAngle = 0;
|
| +var anticlockwise = false;
|
| +var sign = 1;
|
| +for (var i = 0; i < startAngles.length * 2; i++) {
|
| + if (i == startAngles.length) {
|
| + anticlockwise = true;
|
| + sign = -1;
|
| + }
|
| + startAngle = startAngles[i % startAngles.length] * sign;
|
| + ctx.save();
|
| + for (var j = 0; j < sweepAngles.length; j++) {
|
| + ctx.save();
|
| + ctx.beginPath();
|
| + ctx.moveTo(0, 2);
|
| + ctx.arc(18, 15, 10, startAngle, startAngle + (sweepAngles[j] * sign), anticlockwise);
|
| + ctx.lineTo(0, 28);
|
| + ctx.stroke();
|
| + ctx.restore();
|
| + ctx.translate(30, 0);
|
| + }
|
| + ctx.restore();
|
| + ctx.translate(0, 40);
|
| +}
|
| +
|
| +</script>
|
| +</body>
|
| +</html>
|
| +
|
|
|
Chromium Code Reviews
Issue 18286007:
Fix edge case bugs of canvas arc. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@ellipse