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| (Empty) |
| 1 description("Ensure that canvas shadowBlur is not affected by transformations.")
; | |
| 2 | |
| 3 function print(message, color) | |
| 4 { | |
| 5 var paragraph = document.createElement("div"); | |
| 6 paragraph.appendChild(document.createTextNode(message)); | |
| 7 paragraph.style.fontFamily = "monospace"; | |
| 8 if (color) | |
| 9 paragraph.style.color = color; | |
| 10 document.getElementById("console").appendChild(paragraph); | |
| 11 } | |
| 12 | |
| 13 function shouldBeAround(a, b) | |
| 14 { | |
| 15 var evalA; | |
| 16 try { | |
| 17 evalA = eval(a); | |
| 18 } catch(e) { | |
| 19 evalA = e; | |
| 20 } | |
| 21 | |
| 22 if (Math.abs(evalA - b) < 10) | |
| 23 print("PASS " + a + " is around " + b , "green") | |
| 24 else | |
| 25 print("FAIL " + a + " is not around " + b + " (actual: " + evalA + ")",
"red"); | |
| 26 } | |
| 27 | |
| 28 var canvas = document.createElement('canvas'); | |
| 29 document.body.appendChild(canvas); | |
| 30 canvas.setAttribute('width', '600'); | |
| 31 canvas.setAttribute('height', '600'); | |
| 32 var ctx = canvas.getContext('2d'); | |
| 33 | |
| 34 ctx.shadowBlur = 25; | |
| 35 ctx.shadowOffsetX = 100; | |
| 36 ctx.shadowOffsetY = 100; | |
| 37 ctx.fillStyle = 'rgba(0, 0, 255, 1)'; | |
| 38 | |
| 39 // top left | |
| 40 ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; | |
| 41 ctx.scale(4, 4); | |
| 42 ctx.rotate(Math.PI/2); | |
| 43 ctx.translate(25, -50); | |
| 44 ctx.fillRect(0, 0, 25, 25); | |
| 45 | |
| 46 // bottom left | |
| 47 ctx.shadowColor = 'rgba(255, 0, 0, 0.5)'; | |
| 48 ctx.setTransform(1, 0, 0, 1, 0, 0); | |
| 49 ctx.scale(0.5, 0.5); | |
| 50 ctx.fillRect(200, 600, 200, 200); | |
| 51 | |
| 52 // top right | |
| 53 ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; | |
| 54 ctx.scale(2, 2); | |
| 55 ctx.fillRect(300, 100, 100, 100); | |
| 56 | |
| 57 // bottom right | |
| 58 ctx.shadowColor = 'rgba(255, 0, 0, 0.5)'; | |
| 59 ctx.fillRect(300, 300, 100, 100); | |
| 60 | |
| 61 var d; | |
| 62 | |
| 63 // top left | |
| 64 d = ctx.getImageData(250, 250, 1, 1).data; | |
| 65 shouldBe('d[0]', '255'); | |
| 66 shouldBe('d[1]', '0'); | |
| 67 shouldBe('d[2]', '0'); | |
| 68 shouldBeAround('d[3]', '255'); | |
| 69 | |
| 70 d = ctx.getImageData(250, 175, 1, 1).data; | |
| 71 shouldBe('d[0]', '0'); | |
| 72 shouldBe('d[1]', '0'); | |
| 73 shouldBe('d[2]', '0'); | |
| 74 shouldBe('d[3]', '0'); | |
| 75 | |
| 76 d = ctx.getImageData(250, 325, 1, 1).data; | |
| 77 shouldBe('d[0]', '0'); | |
| 78 shouldBe('d[1]', '0'); | |
| 79 shouldBe('d[2]', '0'); | |
| 80 shouldBe('d[3]', '0'); | |
| 81 | |
| 82 d = ctx.getImageData(175, 250, 1, 1).data; | |
| 83 shouldBe('d[0]', '0'); | |
| 84 shouldBe('d[1]', '0'); | |
| 85 shouldBe('d[2]', '0'); | |
| 86 shouldBe('d[3]', '0'); | |
| 87 | |
| 88 d = ctx.getImageData(325, 250, 1, 1).data; | |
| 89 shouldBe('d[0]', '0'); | |
| 90 shouldBe('d[1]', '0'); | |
| 91 shouldBe('d[2]', '0'); | |
| 92 shouldBe('d[3]', '0'); | |
| 93 | |
| 94 // bottom left | |
| 95 d = ctx.getImageData(250, 450, 1, 1).data; | |
| 96 shouldBe('d[0]', '255'); | |
| 97 shouldBe('d[1]', '0'); | |
| 98 shouldBe('d[2]', '0'); | |
| 99 shouldBeAround('d[3]', '126'); | |
| 100 | |
| 101 d = ctx.getImageData(250, 375, 1, 1).data; | |
| 102 shouldBe('d[0]', '0'); | |
| 103 shouldBe('d[1]', '0'); | |
| 104 shouldBe('d[2]', '0'); | |
| 105 shouldBe('d[3]', '0'); | |
| 106 | |
| 107 d = ctx.getImageData(250, 525, 1, 1).data; | |
| 108 shouldBe('d[0]', '0'); | |
| 109 shouldBe('d[1]', '0'); | |
| 110 shouldBe('d[2]', '0'); | |
| 111 shouldBe('d[3]', '0'); | |
| 112 | |
| 113 d = ctx.getImageData(175, 450, 1, 1).data; | |
| 114 shouldBe('d[0]', '0'); | |
| 115 shouldBe('d[1]', '0'); | |
| 116 shouldBe('d[2]', '0'); | |
| 117 shouldBe('d[3]', '0'); | |
| 118 | |
| 119 d = ctx.getImageData(325, 450, 1, 1).data; | |
| 120 shouldBe('d[0]', '0'); | |
| 121 shouldBe('d[1]', '0'); | |
| 122 shouldBe('d[2]', '0'); | |
| 123 shouldBe('d[3]', '0'); | |
| 124 | |
| 125 d = ctx.getImageData(250, 250, 1, 1).data; | |
| 126 shouldBe('d[0]', '255'); | |
| 127 shouldBe('d[1]', '0'); | |
| 128 shouldBe('d[2]', '0'); | |
| 129 shouldBeAround('d[3]', '255'); | |
| 130 | |
| 131 // top right | |
| 132 d = ctx.getImageData(450, 250, 1, 1).data; | |
| 133 shouldBe('d[0]', '255'); | |
| 134 shouldBe('d[1]', '0'); | |
| 135 shouldBe('d[2]', '0'); | |
| 136 shouldBeAround('d[3]', '255'); | |
| 137 | |
| 138 d = ctx.getImageData(450, 175, 1, 1).data; | |
| 139 shouldBe('d[0]', '0'); | |
| 140 shouldBe('d[1]', '0'); | |
| 141 shouldBe('d[2]', '0'); | |
| 142 shouldBe('d[3]', '0'); | |
| 143 | |
| 144 d = ctx.getImageData(450, 325, 1, 1).data; | |
| 145 shouldBe('d[0]', '0'); | |
| 146 shouldBe('d[1]', '0'); | |
| 147 shouldBe('d[2]', '0'); | |
| 148 shouldBe('d[3]', '0'); | |
| 149 | |
| 150 d = ctx.getImageData(375, 250, 1, 1).data; | |
| 151 shouldBe('d[0]', '0'); | |
| 152 shouldBe('d[1]', '0'); | |
| 153 shouldBe('d[2]', '0'); | |
| 154 shouldBe('d[3]', '0'); | |
| 155 | |
| 156 d = ctx.getImageData(525, 250, 1, 1).data; | |
| 157 shouldBe('d[0]', '0'); | |
| 158 shouldBe('d[1]', '0'); | |
| 159 shouldBe('d[2]', '0'); | |
| 160 shouldBe('d[3]', '0'); | |
| 161 | |
| 162 // top right | |
| 163 d = ctx.getImageData(450, 450, 1, 1).data; | |
| 164 shouldBe('d[0]', '255'); | |
| 165 shouldBe('d[1]', '0'); | |
| 166 shouldBe('d[2]', '0'); | |
| 167 shouldBeAround('d[3]', '126'); | |
| 168 | |
| 169 d = ctx.getImageData(450, 375, 1, 1).data; | |
| 170 shouldBe('d[0]', '0'); | |
| 171 shouldBe('d[1]', '0'); | |
| 172 shouldBe('d[2]', '0'); | |
| 173 shouldBe('d[3]', '0'); | |
| 174 | |
| 175 d = ctx.getImageData(450, 525, 1, 1).data; | |
| 176 shouldBe('d[0]', '0'); | |
| 177 shouldBe('d[1]', '0'); | |
| 178 shouldBe('d[2]', '0'); | |
| 179 shouldBe('d[3]', '0'); | |
| 180 | |
| 181 d = ctx.getImageData(375, 450, 1, 1).data; | |
| 182 shouldBe('d[0]', '0'); | |
| 183 shouldBe('d[1]', '0'); | |
| 184 shouldBe('d[2]', '0'); | |
| 185 shouldBe('d[3]', '0'); | |
| 186 | |
| 187 d = ctx.getImageData(525, 450, 1, 1).data; | |
| 188 shouldBe('d[0]', '0'); | |
| 189 shouldBe('d[1]', '0'); | |
| 190 shouldBe('d[2]', '0'); | |
| 191 shouldBe('d[3]', '0'); | |
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