test_2d.path.arc.shape.3.html (1890B)
1 <!DOCTYPE HTML> 2 <title>Canvas test: 2d.path.arc.shape.3</title> 3 <!-- Testing: arc() from 0 to -pi/2 does not draw anything in the wrong quadrant --> 4 <script src="/tests/SimpleTest/SimpleTest.js"></script> 5 <link rel="stylesheet" href="/tests/SimpleTest/test.css"> 6 <body> 7 <canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> 8 <script> 9 function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) { 10 var pixel = ctx.getImageData(x, y, 1, 1); 11 var pr = pixel.data[0], 12 pg = pixel.data[1], 13 pb = pixel.data[2], 14 pa = pixel.data[3]; 15 ok(r-d <= pr && pr <= r+d && 16 g-d <= pg && pg <= g+d && 17 b-d <= pb && pb <= b+d && 18 a-d <= pa && pa <= a+d, 19 "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d); 20 } 21 function todo_isPixel(ctx, x,y, r,g,b,a, pos, colour, d) { 22 var pixel = ctx.getImageData(x, y, 1, 1); 23 var pr = pixel.data[0], 24 pg = pixel.data[1], 25 pb = pixel.data[2], 26 pa = pixel.data[3]; 27 todo(r-d <= pr && pr <= r+d && 28 g-d <= pg && pg <= g+d && 29 b-d <= pb && pb <= b+d && 30 a-d <= pa && pa <= a+d, 31 "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d); 32 } 33 34 SimpleTest.waitForExplicitFinish(); 35 addLoadEvent(function () { 36 37 var canvas = document.getElementById('c'); 38 var ctx = canvas.getContext('2d'); 39 40 ctx.fillStyle = '#0f0'; 41 ctx.fillRect(0, 0, 100, 50); 42 ctx.lineWidth = 100; 43 ctx.strokeStyle = '#f00'; 44 ctx.beginPath(); 45 ctx.arc(0, 50, 50, 0, -Math.PI/2, false); 46 ctx.stroke(); 47 isPixel(ctx, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 0); 48 isPixel(ctx, 1,1, 0,255,0,255, "1,1", "0,255,0,255", 0); 49 isPixel(ctx, 98,1, 0,255,0,255, "98,1", "0,255,0,255", 0); 50 isPixel(ctx, 1,48, 0,255,0,255, "1,48", "0,255,0,255", 0); 51 isPixel(ctx, 98,48, 0,255,0,255, "98,48", "0,255,0,255", 0); 52 53 SimpleTest.finish(); 54 55 }); 56 </script>