content/canvas/test/test_2d.path.isPointInPath.winding.html

   1 <!DOCTYPE HTML>
   2 <title>Canvas test: 2d.path.isPointInPath.winding</title>
   3 <!-- Testing: isPointInPath() uses the non-zero winding number rule -->
   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
  11 SimpleTest.waitForExplicitFinish();
  12 MochiKit.DOM.addLoadEvent(function () {
  13
  14 var canvas = document.getElementById('c');
  15 var ctx = canvas.getContext('2d');
  16
  17 // Create a square ring, using opposite windings to make a hole in the centre
  18 ctx.moveTo(0, 0);
  19 ctx.lineTo(50, 0);
  20 ctx.lineTo(50, 50);
  21 ctx.lineTo(0, 50);
  22 ctx.lineTo(0, 0);
  23 ctx.lineTo(10, 10);
  24 ctx.lineTo(10, 40);
  25 ctx.lineTo(40, 40);
  26 ctx.lineTo(40, 10);
  27 ctx.lineTo(10, 10);
  28
  29 ok(ctx.isPointInPath(5, 5) === true, "ctx.isPointInPath(5, 5) === true");
  30 ok(ctx.isPointInPath(25, 5) === true, "ctx.isPointInPath(25, 5) === true");
  31 ok(ctx.isPointInPath(45, 5) === true, "ctx.isPointInPath(45, 5) === true");
  32 ok(ctx.isPointInPath(5, 25) === true, "ctx.isPointInPath(5, 25) === true");
  33 ok(ctx.isPointInPath(25, 25) === false, "ctx.isPointInPath(25, 25) === false");
  34 ok(ctx.isPointInPath(45, 25) === true, "ctx.isPointInPath(45, 25) === true");
  35 ok(ctx.isPointInPath(5, 45) === true, "ctx.isPointInPath(5, 45) === true");
  36 ok(ctx.isPointInPath(25, 45) === true, "ctx.isPointInPath(25, 45) === true");
  37 ok(ctx.isPointInPath(45, 45) === true, "ctx.isPointInPath(45, 45) === true");
  38
  39 SimpleTest.finish();
  40
  41 });
  42 </script>
  43