Source code

Revision control

Copy as Markdown

Other Tools

Test Info:

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.gradient.radial.cone.shape1</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>
<h1>2d.gradient.radial.cone.shape1</h1>
<p class="desc"></p>
<script>
var t = async_test("");
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; // tolerance to avoid antialiasing artifacts
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.fillStyle = '#f00';
ctx.beginPath();
ctx.moveTo(30+tol, 40);
ctx.lineTo(110, -20+tol);
ctx.lineTo(110, 100-tol);
ctx.fill();
var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
g.addColorStop(0, '#0f0');
g.addColorStop(1, '#0f0');
ctx.fillStyle = g;
ctx.fillRect(0, 0, 100, 50);
_assertPixel(canvas, 1,1, 0,255,0,255);
_assertPixel(canvas, 50,1, 0,255,0,255);
_assertPixel(canvas, 98,1, 0,255,0,255);
_assertPixel(canvas, 1,25, 0,255,0,255);
_assertPixel(canvas, 50,25, 0,255,0,255);
_assertPixelApprox(canvas, 98,25, 0,255,0,255, 1);
_assertPixel(canvas, 1,48, 0,255,0,255);
_assertPixelApprox(canvas, 50,48, 0,255,0,255, 1);
_assertPixel(canvas, 98,48, 0,255,0,255);
t.done();
});
</script>