1 /* 2 * Copyright 2012 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "gm.h" 9 #include "SkLightingImageFilter.h" 10 #include "SkOffsetImageFilter.h" 11 #include "SkPoint3.h" 12 13 #define WIDTH 330 14 #define HEIGHT 660 15 16 namespace skiagm { 17 18 class ImageLightingGM : public GM { 19 public: ImageLightingGM()20 ImageLightingGM() { 21 this->setBGColor(0xFF000000); 22 } 23 24 protected: 25 onShortName()26 SkString onShortName() override { 27 return SkString("lighting"); 28 } 29 onISize()30 SkISize onISize() override { 31 return SkISize::Make(WIDTH, HEIGHT); 32 } 33 drawClippedBitmap(SkCanvas * canvas,const SkPaint & paint,int x,int y)34 void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) { 35 canvas->save(); 36 canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); 37 canvas->clipRect(SkRect::MakeWH( 38 SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height()))); 39 canvas->drawBitmap(fBitmap, 0, 0, &paint); 40 canvas->restore(); 41 } 42 onOnceBeforeDraw()43 void onOnceBeforeDraw() override { 44 fBitmap = sk_tool_utils::create_string_bitmap(100, 100, 0xFFFFFFFF, 20, 70, 96, "e"); 45 } 46 onDraw(SkCanvas * canvas)47 void onDraw(SkCanvas* canvas) override { 48 canvas->clear(sk_tool_utils::color_to_565(0xFF101010)); 49 SkPaint checkPaint; 50 checkPaint.setColor(sk_tool_utils::color_to_565(0xFF202020)); 51 for (int y = 0; y < HEIGHT; y += 16) { 52 for (int x = 0; x < WIDTH; x += 16) { 53 canvas->save(); 54 canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); 55 canvas->drawRect(SkRect::MakeXYWH(8, 0, 8, 8), checkPaint); 56 canvas->drawRect(SkRect::MakeXYWH(0, 8, 8, 8), checkPaint); 57 canvas->restore(); 58 } 59 } 60 SkPoint3 pointLocation = SkPoint3::Make(0, 0, SkIntToScalar(10)); 61 SkScalar azimuthRad = SkDegreesToRadians(SkIntToScalar(225)); 62 SkScalar elevationRad = SkDegreesToRadians(SkIntToScalar(5)); 63 SkPoint3 distantDirection = SkPoint3::Make(SkScalarMul(SkScalarCos(azimuthRad), 64 SkScalarCos(elevationRad)), 65 SkScalarMul(SkScalarSin(azimuthRad), 66 SkScalarCos(elevationRad)), 67 SkScalarSin(elevationRad)); 68 SkPoint3 spotLocation = SkPoint3::Make(SkIntToScalar(-10), 69 SkIntToScalar(-10), 70 SkIntToScalar(20)); 71 SkPoint3 spotTarget = SkPoint3::Make(SkIntToScalar(40), SkIntToScalar(40), 0); 72 SkScalar spotExponent = SK_Scalar1; 73 SkScalar cutoffAngle = SkIntToScalar(15); 74 SkScalar kd = SkIntToScalar(2); 75 SkScalar ks = SkIntToScalar(1); 76 SkScalar shininess = SkIntToScalar(8); 77 SkScalar surfaceScale = SkIntToScalar(1); 78 SkColor white(0xFFFFFFFF); 79 SkPaint paint; 80 81 SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(20, 10, 60, 65)); 82 SkImageFilter::CropRect fullSizeCropRect(SkRect::MakeXYWH(0, 0, 100, 100)); 83 SkAutoTUnref<SkImageFilter> noopCropped(SkOffsetImageFilter::Create(0, 0, nullptr, &cropRect)); 84 85 int y = 0; 86 for (int i = 0; i < 3; i++) { 87 const SkImageFilter::CropRect* cr = (i == 1) ? &cropRect : (i == 2) ? &fullSizeCropRect : nullptr; 88 SkImageFilter* input = (i == 2) ? noopCropped.get() : nullptr; 89 paint.setImageFilter(SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, 90 white, 91 surfaceScale, 92 kd, 93 input, 94 cr))->unref(); 95 drawClippedBitmap(canvas, paint, 0, y); 96 97 paint.setImageFilter(SkLightingImageFilter::CreateDistantLitDiffuse(distantDirection, 98 white, 99 surfaceScale, 100 kd, 101 input, 102 cr))->unref(); 103 drawClippedBitmap(canvas, paint, 110, y); 104 105 paint.setImageFilter(SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation, 106 spotTarget, 107 spotExponent, 108 cutoffAngle, 109 white, 110 surfaceScale, 111 kd, 112 input, 113 cr))->unref(); 114 drawClippedBitmap(canvas, paint, 220, y); 115 116 y += 110; 117 118 paint.setImageFilter(SkLightingImageFilter::CreatePointLitSpecular(pointLocation, 119 white, 120 surfaceScale, 121 ks, 122 shininess, 123 input, 124 cr))->unref(); 125 drawClippedBitmap(canvas, paint, 0, y); 126 127 paint.setImageFilter(SkLightingImageFilter::CreateDistantLitSpecular(distantDirection, 128 white, 129 surfaceScale, 130 ks, 131 shininess, 132 input, 133 cr))->unref(); 134 drawClippedBitmap(canvas, paint, 110, y); 135 136 paint.setImageFilter(SkLightingImageFilter::CreateSpotLitSpecular(spotLocation, 137 spotTarget, 138 spotExponent, 139 cutoffAngle, 140 white, 141 surfaceScale, 142 ks, 143 shininess, 144 input, 145 cr))->unref(); 146 drawClippedBitmap(canvas, paint, 220, y); 147 148 y += 110; 149 } 150 } 151 152 private: 153 SkBitmap fBitmap; 154 155 typedef GM INHERITED; 156 }; 157 158 ////////////////////////////////////////////////////////////////////////////// 159 160 DEF_GM(return new ImageLightingGM;) 161 } 162