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chromium/third_party/blink/web_tests/external/wpt/html/canvas/offscreen/path-objects/2d.path.isPointInPath.winding.html 

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.path.isPointInPath.winding</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.isPointInPath.winding</h1>
<p class="desc">isPointInPath() uses the non-zero winding number rule</p>


<script>
var t = async_test("isPointInPath() uses the non-zero winding number rule");
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');

  // Create a square ring, using opposite windings to make a hole in the centre
  ctx.moveTo(0, 0);
  ctx.lineTo(50, 0);
  ctx.lineTo(50, 50);
  ctx.lineTo(0, 50);
  ctx.lineTo(0, 0);
  ctx.lineTo(10, 10);
  ctx.lineTo(10, 40);
  ctx.lineTo(40, 40);
  ctx.lineTo(40, 10);
  ctx.lineTo(10, 10);

  _assertSame(ctx.isPointInPath(5, 5), true, "ctx.isPointInPath(5, 5)", "true");
  _assertSame(ctx.isPointInPath(25, 5), true, "ctx.isPointInPath(25, 5)", "true");
  _assertSame(ctx.isPointInPath(45, 5), true, "ctx.isPointInPath(45, 5)", "true");
  _assertSame(ctx.isPointInPath(5, 25), true, "ctx.isPointInPath(5, 25)", "true");
  _assertSame(ctx.isPointInPath(25, 25), false, "ctx.isPointInPath(25, 25)", "false");
  _assertSame(ctx.isPointInPath(45, 25), true, "ctx.isPointInPath(45, 25)", "true");
  _assertSame(ctx.isPointInPath(5, 45), true, "ctx.isPointInPath(5, 45)", "true");
  _assertSame(ctx.isPointInPath(25, 45), true, "ctx.isPointInPath(25, 45)", "true");
  _assertSame(ctx.isPointInPath(45, 45), true, "ctx.isPointInPath(45, 45)", "true");
  t.done();

});
</script>