2d.path.arcTo.shape.curve1.html (1843B)
1 <!DOCTYPE html> 2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> 3 <meta charset="UTF-8"> 4 <title>OffscreenCanvas test: 2d.path.arcTo.shape.curve1</title> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <script src="/html/canvas/resources/canvas-tests.js"></script> 8 9 <h1>2d.path.arcTo.shape.curve1</h1> 10 <p class="desc">arcTo() curves in the right kind of shape</p> 11 12 13 <script> 14 var t = async_test("arcTo() curves in the right kind of shape"); 15 var t_pass = t.done.bind(t); 16 var t_fail = t.step_func(function(reason) { 17 throw reason; 18 }); 19 t.step(function() { 20 21 var canvas = new OffscreenCanvas(100, 50); 22 var ctx = canvas.getContext('2d'); 23 24 var tol = 1.5; // tolerance to avoid antialiasing artifacts 25 26 ctx.fillStyle = '#0f0'; 27 ctx.fillRect(0, 0, 100, 50); 28 29 ctx.strokeStyle = '#f00'; 30 ctx.lineWidth = 10; 31 ctx.beginPath(); 32 ctx.moveTo(10, 25); 33 ctx.arcTo(75, 25, 75, 60, 20); 34 ctx.stroke(); 35 36 ctx.fillStyle = '#0f0'; 37 ctx.beginPath(); 38 ctx.rect(10, 20, 45, 10); 39 ctx.moveTo(80, 45); 40 ctx.arc(55, 45, 25+tol, 0, -Math.PI/2, true); 41 ctx.arc(55, 45, 15-tol, -Math.PI/2, 0, false); 42 ctx.fill(); 43 44 _assertPixel(canvas, 50,25, 0,255,0,255); 45 _assertPixel(canvas, 55,19, 0,255,0,255); 46 _assertPixel(canvas, 55,20, 0,255,0,255); 47 _assertPixel(canvas, 55,21, 0,255,0,255); 48 _assertPixel(canvas, 64,22, 0,255,0,255); 49 _assertPixel(canvas, 65,21, 0,255,0,255); 50 _assertPixel(canvas, 72,28, 0,255,0,255); 51 _assertPixel(canvas, 73,27, 0,255,0,255); 52 _assertPixel(canvas, 78,36, 0,255,0,255); 53 _assertPixel(canvas, 79,35, 0,255,0,255); 54 _assertPixel(canvas, 80,44, 0,255,0,255); 55 _assertPixel(canvas, 80,45, 0,255,0,255); 56 _assertPixel(canvas, 80,46, 0,255,0,255); 57 _assertPixel(canvas, 65,45, 0,255,0,255); 58 t.done(); 59 60 }); 61 </script>