2d.line.cap.round.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/line-styles/2d.line.cap.round.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

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

<title>OffscreenCanvas test: 2d.line.cap.round</title>

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

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

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

<h1>2d.line.cap.round</h1>

<p class="desc">lineCap 'round' is rendered correctly</p>

<script>

var t = async_test("lineCap 'round' is rendered correctly");

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');

  ctx.fillStyle = '#0f0';

  ctx.fillRect(0, 0, 100, 50);

  var tol = 1; // tolerance to avoid antialiasing artifacts

  ctx.lineCap = 'round';

  ctx.lineWidth = 20;

  ctx.fillStyle = '#f00';

  ctx.strokeStyle = '#0f0';

  ctx.beginPath();

  ctx.moveTo(35-tol, 15);

  ctx.arc(25, 15, 10-tol, 0, Math.PI, true);

  ctx.arc(25, 35, 10-tol, Math.PI, 0, true);

  ctx.fill();

  ctx.beginPath();

  ctx.moveTo(25, 15);

  ctx.lineTo(25, 35);

  ctx.stroke();

  ctx.fillStyle = '#0f0';

  ctx.strokeStyle = '#f00';

  ctx.beginPath();

  ctx.moveTo(75, 15);

  ctx.lineTo(75, 35);

  ctx.stroke();

  ctx.beginPath();

  ctx.moveTo(85+tol, 15);

  ctx.arc(75, 15, 10+tol, 0, Math.PI, true);

  ctx.arc(75, 35, 10+tol, Math.PI, 0, true);

  ctx.fill();

  _assertPixel(canvas, 17,6, 0,255,0,255);

  _assertPixel(canvas, 25,6, 0,255,0,255);

  _assertPixel(canvas, 32,6, 0,255,0,255);

  _assertPixel(canvas, 17,43, 0,255,0,255);

  _assertPixel(canvas, 25,43, 0,255,0,255);

  _assertPixel(canvas, 32,43, 0,255,0,255);

  _assertPixel(canvas, 67,6, 0,255,0,255);

  _assertPixel(canvas, 75,6, 0,255,0,255);

  _assertPixel(canvas, 82,6, 0,255,0,255);

  _assertPixel(canvas, 67,43, 0,255,0,255);

  _assertPixel(canvas, 75,43, 0,255,0,255);

  _assertPixel(canvas, 82,43, 0,255,0,255);

  t.done();

});

</script>