| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| #include "SkLightingImageFilter.h" |
| |
| #define WIDTH 330 |
| #define HEIGHT 440 |
| |
| namespace skiagm { |
| |
| class ImageLightingGM : public GM { |
| public: |
| ImageLightingGM() : fInitialized(false) { |
| this->setBGColor(0xFF000000); |
| } |
| |
| protected: |
| virtual SkString onShortName() { |
| return SkString("lighting"); |
| } |
| |
| void make_bitmap() { |
| fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 100, 100); |
| fBitmap.allocPixels(); |
| SkDevice device(fBitmap); |
| SkCanvas canvas(&device); |
| canvas.clear(0x00000000); |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setColor(0xFFFFFFFF); |
| paint.setTextSize(SkIntToScalar(96)); |
| const char* str = "e"; |
| canvas.drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint); |
| } |
| |
| virtual SkISize onISize() { |
| return make_isize(WIDTH, HEIGHT); |
| } |
| |
| void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) { |
| canvas->save(); |
| canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); |
| canvas->clipRect(SkRect::MakeWH( |
| SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height()))); |
| canvas->drawBitmap(fBitmap, 0, 0, &paint); |
| canvas->restore(); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| if (!fInitialized) { |
| make_bitmap(); |
| fInitialized = true; |
| } |
| canvas->clear(0xFF101010); |
| SkPaint checkPaint; |
| checkPaint.setColor(0xFF202020); |
| for (int y = 0; y < HEIGHT; y += 16) { |
| for (int x = 0; x < WIDTH; x += 16) { |
| canvas->save(); |
| canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); |
| canvas->drawRect(SkRect::MakeXYWH(8, 0, 8, 8), checkPaint); |
| canvas->drawRect(SkRect::MakeXYWH(0, 8, 8, 8), checkPaint); |
| canvas->restore(); |
| } |
| } |
| SkPoint3 pointLocation(0, 0, SkIntToScalar(10)); |
| SkScalar azimuthRad = SkDegreesToRadians(SkIntToScalar(225)); |
| SkScalar elevationRad = SkDegreesToRadians(SkIntToScalar(5)); |
| SkPoint3 distantDirection(SkScalarMul(SkScalarCos(azimuthRad), SkScalarCos(elevationRad)), |
| SkScalarMul(SkScalarSin(azimuthRad), SkScalarCos(elevationRad)), |
| SkScalarSin(elevationRad)); |
| SkPoint3 spotLocation(SkIntToScalar(-10), SkIntToScalar(-10), SkIntToScalar(20)); |
| SkPoint3 spotTarget(SkIntToScalar(40), SkIntToScalar(40), 0); |
| SkScalar spotExponent = SK_Scalar1; |
| SkScalar cutoffAngle = SkIntToScalar(15); |
| SkScalar kd = SkIntToScalar(2); |
| SkScalar ks = SkIntToScalar(1); |
| SkScalar shininess = SkIntToScalar(8); |
| SkScalar surfaceScale = SkIntToScalar(1); |
| SkColor white(0xFFFFFFFF); |
| SkPaint paint; |
| |
| SkIRect cropRect = SkIRect::MakeXYWH(20, 10, 60, 65); |
| |
| int y = 0; |
| for (int i = 0; i < 2; i++) { |
| const SkIRect* cr = (i == 0) ? NULL : &cropRect; |
| paint.setImageFilter(SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, white, surfaceScale, kd, NULL, cr))->unref(); |
| drawClippedBitmap(canvas, paint, 0, y); |
| |
| paint.setImageFilter(SkLightingImageFilter::CreateDistantLitDiffuse(distantDirection, white, surfaceScale, kd, NULL, cr))->unref(); |
| drawClippedBitmap(canvas, paint, 110, y); |
| |
| paint.setImageFilter(SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation, spotTarget, spotExponent, cutoffAngle, white, surfaceScale, kd, NULL, cr))->unref(); |
| drawClippedBitmap(canvas, paint, 220, y); |
| |
| y += 110; |
| |
| paint.setImageFilter(SkLightingImageFilter::CreatePointLitSpecular(pointLocation, white, surfaceScale, ks, shininess, NULL, cr))->unref(); |
| drawClippedBitmap(canvas, paint, 0, y); |
| |
| paint.setImageFilter(SkLightingImageFilter::CreateDistantLitSpecular(distantDirection, white, surfaceScale, ks, shininess, NULL, cr))->unref(); |
| drawClippedBitmap(canvas, paint, 110, y); |
| |
| paint.setImageFilter(SkLightingImageFilter::CreateSpotLitSpecular(spotLocation, spotTarget, spotExponent, cutoffAngle, white, surfaceScale, ks, shininess, NULL, cr))->unref(); |
| drawClippedBitmap(canvas, paint, 220, y); |
| |
| y += 110; |
| } |
| } |
| |
| private: |
| typedef GM INHERITED; |
| SkBitmap fBitmap; |
| bool fInitialized; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static GM* MyFactory(void*) { return new ImageLightingGM; } |
| static GMRegistry reg(MyFactory); |
| |
| } |