1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.path.arc.shape.2</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.arc.shape.2</h1>
<p class="desc">arc() from 0 to pi draws stuff in the right half</p>
<script>
var t = async_test("arc() from 0 to pi draws stuff in the right half");
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 = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.lineWidth = 100;
ctx.strokeStyle = '#0f0';
ctx.beginPath();
ctx.arc(50, 50, 50, 0, Math.PI, true);
ctx.stroke();
_assertPixel(canvas, 50,25, 0,255,0,255);
_assertPixel(canvas, 1,1, 0,255,0,255);
_assertPixel(canvas, 98,1, 0,255,0,255);
_assertPixel(canvas, 1,48, 0,255,0,255);
_assertPixel(canvas, 20,48, 0,255,0,255);
_assertPixel(canvas, 98,48, 0,255,0,255);
t.done();
});
</script>
|
