2d.path.arcTo.shape.curve1.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve1.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.arcTo.shape.curve1</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.arcTo.shape.curve1</h1>

<p class="desc">arcTo() curves in the right kind of shape</p>

<script>

var t = async_test("arcTo() curves in the right kind of shape");

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 tol = 1.5; // tolerance to avoid antialiasing artifacts

  ctx.fillStyle = '#0f0';

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

  ctx.strokeStyle = '#f00';

  ctx.lineWidth = 10;

  ctx.beginPath();

  ctx.moveTo(10, 25);

  ctx.arcTo(75, 25, 75, 60, 20);

  ctx.stroke();

  ctx.fillStyle = '#0f0';

  ctx.beginPath();

  ctx.rect(10, 20, 45, 10);

  ctx.moveTo(80, 45);

  ctx.arc(55, 45, 25+tol, 0, -Math.PI/2, true);

  ctx.arc(55, 45, 15-tol, -Math.PI/2, 0, false);

  ctx.fill();

  _assertPixel(canvas, 50,25, 0,255,0,255);

  _assertPixel(canvas, 55,19, 0,255,0,255);

  _assertPixel(canvas, 55,20, 0,255,0,255);

  _assertPixel(canvas, 55,21, 0,255,0,255);

  _assertPixel(canvas, 64,22, 0,255,0,255);

  _assertPixel(canvas, 65,21, 0,255,0,255);

  _assertPixel(canvas, 72,28, 0,255,0,255);

  _assertPixel(canvas, 73,27, 0,255,0,255);

  _assertPixel(canvas, 78,36, 0,255,0,255);

  _assertPixel(canvas, 79,35, 0,255,0,255);

  _assertPixel(canvas, 80,44, 0,255,0,255);

  _assertPixel(canvas, 80,45, 0,255,0,255);

  _assertPixel(canvas, 80,46, 0,255,0,255);

  _assertPixel(canvas, 65,45, 0,255,0,255);

  t.done();

});

</script>