| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkPath.h" |
| #include "include/core/SkRegion.h" |
| #include "include/core/SkShader.h" |
| #include "include/core/SkString.h" |
| #include "include/effects/SkGradientShader.h" |
| #include "include/utils/SkCamera.h" |
| #include "include/utils/SkRandom.h" |
| #include "samplecode/DecodeFile.h" |
| #include "samplecode/Sample.h" |
| #include "src/effects/SkEmbossMaskFilter.h" |
| #include "src/utils/SkUTF.h" |
| #include "tools/timer/AnimTimer.h" |
| |
| class CameraView : public Sample { |
| SkTArray<sk_sp<SkShader>> fShaders; |
| int fShaderIndex; |
| bool fFrontFace; |
| public: |
| CameraView() { |
| fRX = fRY = fRZ = 0; |
| fShaderIndex = 0; |
| fFrontFace = false; |
| |
| for (int i = 0;; i++) { |
| SkString str; |
| str.printf("/skimages/elephant%d.jpeg", i); |
| SkBitmap bm; |
| if (decode_file(str.c_str(), &bm)) { |
| SkRect src = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) }; |
| SkRect dst = { -150, -150, 150, 150 }; |
| SkMatrix matrix; |
| matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); |
| |
| fShaders.push_back(bm.makeShader(&matrix)); |
| } else { |
| break; |
| } |
| } |
| this->setBGColor(0xFFDDDDDD); |
| } |
| |
| protected: |
| bool onQuery(Sample::Event* evt) override { |
| if (Sample::TitleQ(*evt)) { |
| Sample::TitleR(evt, "Camera"); |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| void onDrawContent(SkCanvas* canvas) override { |
| canvas->translate(this->width()/2, this->height()/2); |
| |
| Sk3DView view; |
| view.rotateX(fRX); |
| view.rotateY(fRY); |
| view.applyToCanvas(canvas); |
| |
| SkPaint paint; |
| if (fShaders.count() > 0) { |
| bool frontFace = view.dotWithNormal(0, 0, SK_Scalar1) < 0; |
| if (frontFace != fFrontFace) { |
| fFrontFace = frontFace; |
| fShaderIndex = (fShaderIndex + 1) % fShaders.count(); |
| } |
| |
| paint.setAntiAlias(true); |
| paint.setShader(fShaders[fShaderIndex]); |
| paint.setFilterQuality(kLow_SkFilterQuality); |
| SkRect r = { -150, -150, 150, 150 }; |
| canvas->drawRoundRect(r, 30, 30, paint); |
| } |
| } |
| |
| bool onAnimate(const AnimTimer& timer) override { |
| if (timer.isStopped()) { |
| fRY = 0; |
| } else { |
| fRY = timer.scaled(90, 360); |
| } |
| return true; |
| } |
| |
| private: |
| SkScalar fRX, fRY, fRZ; |
| typedef Sample INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_SAMPLE( return new CameraView(); ) |