/* * 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" #include "SkOffsetImageFilter.h" #include "SkPoint3.h" #define WIDTH 330 #define HEIGHT 660 namespace skiagm { class ImageLightingGM : public GM { public: ImageLightingGM() { this->setBGColor(0xFF000000); } protected: SkString onShortName() override { return SkString("lighting"); } SkISize onISize() override { return SkISize::Make(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(); } void onOnceBeforeDraw() override { fBitmap = sk_tool_utils::create_string_bitmap(100, 100, 0xFFFFFFFF, 20, 70, 96, "e"); } void onDraw(SkCanvas* canvas) override { canvas->clear(sk_tool_utils::color_to_565(0xFF101010)); SkPaint checkPaint; checkPaint.setColor(sk_tool_utils::color_to_565(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 = SkPoint3::Make(0, 0, SkIntToScalar(10)); SkScalar azimuthRad = SkDegreesToRadians(SkIntToScalar(225)); SkScalar elevationRad = SkDegreesToRadians(SkIntToScalar(5)); SkPoint3 distantDirection = SkPoint3::Make(SkScalarMul(SkScalarCos(azimuthRad), SkScalarCos(elevationRad)), SkScalarMul(SkScalarSin(azimuthRad), SkScalarCos(elevationRad)), SkScalarSin(elevationRad)); SkPoint3 spotLocation = SkPoint3::Make(SkIntToScalar(-10), SkIntToScalar(-10), SkIntToScalar(20)); SkPoint3 spotTarget = SkPoint3::Make(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; SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(20, 10, 60, 65)); SkImageFilter::CropRect fullSizeCropRect(SkRect::MakeXYWH(0, 0, 100, 100)); SkAutoTUnref<SkImageFilter> noopCropped(SkOffsetImageFilter::Create(0, 0, nullptr, &cropRect)); int y = 0; for (int i = 0; i < 3; i++) { const SkImageFilter::CropRect* cr = (i == 1) ? &cropRect : (i == 2) ? &fullSizeCropRect : nullptr; SkImageFilter* input = (i == 2) ? noopCropped.get() : nullptr; paint.setImageFilter(SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, white, surfaceScale, kd, input, cr))->unref(); drawClippedBitmap(canvas, paint, 0, y); paint.setImageFilter(SkLightingImageFilter::CreateDistantLitDiffuse(distantDirection, white, surfaceScale, kd, input, cr))->unref(); drawClippedBitmap(canvas, paint, 110, y); paint.setImageFilter(SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation, spotTarget, spotExponent, cutoffAngle, white, surfaceScale, kd, input, cr))->unref(); drawClippedBitmap(canvas, paint, 220, y); y += 110; paint.setImageFilter(SkLightingImageFilter::CreatePointLitSpecular(pointLocation, white, surfaceScale, ks, shininess, input, cr))->unref(); drawClippedBitmap(canvas, paint, 0, y); paint.setImageFilter(SkLightingImageFilter::CreateDistantLitSpecular(distantDirection, white, surfaceScale, ks, shininess, input, cr))->unref(); drawClippedBitmap(canvas, paint, 110, y); paint.setImageFilter(SkLightingImageFilter::CreateSpotLitSpecular(spotLocation, spotTarget, spotExponent, cutoffAngle, white, surfaceScale, ks, shininess, input, cr))->unref(); drawClippedBitmap(canvas, paint, 220, y); y += 110; } } private: SkBitmap fBitmap; typedef GM INHERITED; }; ////////////////////////////////////////////////////////////////////////////// DEF_GM(return new ImageLightingGM;) }