content/canvas/test/test_2d.path.arcTo.shape.curve1.html

   1 <!DOCTYPE HTML>
   2 <title>Canvas test: 2d.path.arcTo.shape.curve1</title>
   3 <!-- Testing: arcTo() curves in the right kind of shape -->
   4 <script src="/MochiKit/MochiKit.js"></script>
   5 <script src="/tests/SimpleTest/SimpleTest.js"></script>
   6 <link rel="stylesheet" href="/tests/SimpleTest/test.css">
   7 <body>
   8 <canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
   9 <script>
  10 function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
  11     var pixel = ctx.getImageData(x, y, 1, 1);
  12     var pr = pixel.data[0],
  13         pg = pixel.data[1],
  14         pb = pixel.data[2],
  15         pa = pixel.data[3];
  16     ok(r-d <= pr && pr <= r+d &&
  17        g-d <= pg && pg <= g+d &&
  18        b-d <= pb && pb <= b+d &&
  19        a-d <= pa && pa <= a+d,
  20        "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
  21 }
  22 function todo_isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
  23     var pixel = ctx.getImageData(x, y, 1, 1);
  24     var pr = pixel.data[0],
  25         pg = pixel.data[1],
  26         pb = pixel.data[2],
  27         pa = pixel.data[3];
  28     todo(r-d <= pr && pr <= r+d &&
  29        g-d <= pg && pg <= g+d &&
  30        b-d <= pb && pb <= b+d &&
  31        a-d <= pa && pa <= a+d,
  32        "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
  33 }
  34
  35 SimpleTest.waitForExplicitFinish();
  36 MochiKit.DOM.addLoadEvent(function () {
  37
  38 var canvas = document.getElementById('c');
  39 var ctx = canvas.getContext('2d');
  40
  41 var tol = 1.5; // tolerance to avoid antialiasing artifacts
  42
  43 ctx.fillStyle = '#0f0';
  44 ctx.fillRect(0, 0, 100, 50);
  45
  46 ctx.strokeStyle = '#f00';
  47 ctx.lineWidth = 10;
  48 ctx.beginPath();
  49 ctx.moveTo(10, 25);
  50 ctx.arcTo(75, 25, 75, 60, 20);
  51 ctx.stroke();
  52
  53 ctx.fillStyle = '#0f0';
  54 ctx.beginPath();
  55 ctx.rect(10, 20, 45, 10);
  56 ctx.moveTo(80, 45);
  57 ctx.arc(55, 45, 25+tol, 0, -Math.PI/2, true);
  58 ctx.arc(55, 45, 15-tol, -Math.PI/2, 0, false);
  59 ctx.fill();
  60
  61 isPixel(ctx, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 0);
  62 isPixel(ctx, 55,19, 0,255,0,255, "55,19", "0,255,0,255", 0);
  63 isPixel(ctx, 55,20, 0,255,0,255, "55,20", "0,255,0,255", 0);
  64 isPixel(ctx, 55,21, 0,255,0,255, "55,21", "0,255,0,255", 0);
  65 isPixel(ctx, 64,22, 0,255,0,255, "64,22", "0,255,0,255", 0);
  66 isPixel(ctx, 65,21, 0,255,0,255, "65,21", "0,255,0,255", 0);
  67 isPixel(ctx, 72,28, 0,255,0,255, "72,28", "0,255,0,255", 0);
  68 isPixel(ctx, 73,27, 0,255,0,255, "73,27", "0,255,0,255", 0);
  69 isPixel(ctx, 78,36, 0,255,0,255, "78,36", "0,255,0,255", 0);
  70 isPixel(ctx, 79,35, 0,255,0,255, "79,35", "0,255,0,255", 0);
  71 isPixel(ctx, 80,44, 0,255,0,255, "80,44", "0,255,0,255", 0);
  72 todo_isPixel(ctx, 80,45, 0,255,0,255, "80,45", "0,255,0,255", 0);
  73 todo_isPixel(ctx, 80,46, 0,255,0,255, "80,46", "0,255,0,255", 0);
  74
  75 SimpleTest.finish();
  76
  77 });
  78 </script>
  79