2d.path.isPointInStroke.scaleddashes.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/path-objects/2d.path.isPointInStroke.scaleddashes.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->

<meta charset="UTF-8">

<title>OffscreenCanvas test: 2d.path.isPointInStroke.scaleddashes</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/html/canvas/resources/canvas-tests.js"></script>

<h1>2d.path.isPointInStroke.scaleddashes</h1>

<p class="desc">isPointInStroke() should return correct results on dashed paths at high scale factors</p>

<script>

var t = async_test("isPointInStroke() should return correct results on dashed paths at high scale factors");

var t_pass = t.done.bind(t);

var t_fail = t.step_func(function(reason) {

    throw reason;

});

t.step(function() {

  var canvas = new OffscreenCanvas(100, 50);

  var ctx = canvas.getContext('2d');

  var scale = 20;

  ctx.setLineDash([10, 21.4159]); // dash from t=0 to t=10 along the circle

  ctx.scale(scale, scale);

  ctx.ellipse(6, 10, 5, 5, 0, 2*Math.PI, false);

  ctx.stroke();

  // hit-test the beginning of the dash (t=0)

  _assertSame(ctx.isPointInStroke(11*scale, 10*scale), true, "ctx.isPointInStroke(11*scale, 10*scale)", "true");

  // hit-test the middle of the dash (t=5)

  _assertSame(ctx.isPointInStroke(8.70*scale, 14.21*scale), true, "ctx.isPointInStroke(8.70*scale, 14.21*scale)", "true");

  // hit-test the end of the dash (t=9.8)

  _assertSame(ctx.isPointInStroke(4.10*scale, 14.63*scale), true, "ctx.isPointInStroke(4.10*scale, 14.63*scale)", "true");

  // hit-test past the end of the dash (t=10.2)

  _assertSame(ctx.isPointInStroke(3.74*scale, 14.46*scale), false, "ctx.isPointInStroke(3.74*scale, 14.46*scale)", "false");

  t.done();

});

</script>