2d.imageData.get.rounding.worker.js (1261B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.imageData.get.rounding 3 // Description:Test the handling of non-integer source coordinates in getImageData(). 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test("Test the handling of non-integer source coordinates in getImageData()."); 10 var t_pass = t.done.bind(t); 11 var t_fail = t.step_func(function(reason) { 12 throw reason; 13 }); 14 t.step(function() { 15 16 var canvas = new OffscreenCanvas(100, 50); 17 var ctx = canvas.getContext('2d'); 18 19 function testDimensions(sx, sy, sw, sh, width, height) 20 { 21 imageData = ctx.getImageData(sx, sy, sw, sh); 22 _assert(imageData.width == width, "imageData.width == width"); 23 _assert(imageData.height == height, "imageData.height == height"); 24 } 25 26 testDimensions(0, 0, 20, 10, 20, 10); 27 28 testDimensions(.1, .2, 20, 10, 20, 10); 29 testDimensions(.9, .8, 20, 10, 20, 10); 30 31 testDimensions(0, 0, 20.9, 10.9, 20, 10); 32 testDimensions(0, 0, 20.1, 10.1, 20, 10); 33 34 testDimensions(-1, -1, 20, 10, 20, 10); 35 36 testDimensions(-1.1, 0, 20, 10, 20, 10); 37 testDimensions(-1.9, 0, 20, 10, 20, 10); 38 t.done(); 39 }); 40 done();