2d.imageData.object.round.html (2247B)
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>Canvas test: 2d.imageData.object.round</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 <link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css"> 9 <body class="show_output"> 10 11 <h1>2d.imageData.object.round</h1> 12 <p class="desc">ImageData.data rounds numbers with round-to-zero</p> 13 14 15 <p class="output">Actual output:</p> 16 <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> 17 18 <ul id="d"></ul> 19 <script> 20 var t = async_test("ImageData.data rounds numbers with round-to-zero"); 21 _addTest(function(canvas, ctx) { 22 23 var imgdata = ctx.getImageData(0, 0, 10, 10); 24 imgdata.data[0] = 0.499; 25 _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); 26 imgdata.data[0] = 0.5; 27 _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); 28 imgdata.data[0] = 0.501; 29 _assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1"); 30 imgdata.data[0] = 1.499; 31 _assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1"); 32 imgdata.data[0] = 1.5; 33 _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2"); 34 imgdata.data[0] = 1.501; 35 _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2"); 36 imgdata.data[0] = 2.5; 37 _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2"); 38 imgdata.data[0] = 3.5; 39 _assertSame(imgdata.data[0], 4, "imgdata.data[\""+(0)+"\"]", "4"); 40 imgdata.data[0] = 252.5; 41 _assertSame(imgdata.data[0], 252, "imgdata.data[\""+(0)+"\"]", "252"); 42 imgdata.data[0] = 253.5; 43 _assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254"); 44 imgdata.data[0] = 254.5; 45 _assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254"); 46 imgdata.data[0] = 256.5; 47 _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255"); 48 imgdata.data[0] = -0.5; 49 _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); 50 imgdata.data[0] = -1.5; 51 _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); 52 53 }); 54 </script>