1 /* 2 * Copyright 2011 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 "include/core/SkCanvas.h" 9 #include "include/core/SkShader.h" 10 #include "include/core/SkString.h" 11 #include "include/utils/SkCamera.h" 12 #include "samplecode/DecodeFile.h" 13 #include "samplecode/Sample.h" 14 #include "src/effects/SkEmbossMaskFilter.h" 15 #include "tools/Resources.h" 16 #include "tools/timer/TimeUtils.h" 17 18 namespace { 19 class CameraView : public Sample { 20 SkTArray<sk_sp<SkShader>> fShaders; 21 int fShaderIndex = 0; 22 bool fFrontFace = false; 23 SkScalar fRX = 0; 24 SkScalar fRY = 0; 25 name()26 SkString name() override { return SkString("Camera"); } 27 onOnceBeforeDraw()28 void onOnceBeforeDraw() override { 29 for (const char* resource : { 30 "images/mandrill_512_q075.jpg", 31 "images/dog.jpg", 32 "images/gamut.png", 33 }) { 34 SkBitmap bm; 35 if (GetResourceAsBitmap(resource, &bm)) { 36 SkRect src = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) }; 37 SkRect dst = { -150, -150, 150, 150 }; 38 SkMatrix matrix; 39 matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit); 40 fShaders.push_back(bm.makeShader(&matrix)); 41 } 42 } 43 this->setBGColor(0xFFDDDDDD); 44 } 45 onDrawContent(SkCanvas * canvas)46 void onDrawContent(SkCanvas* canvas) override { 47 if (fShaders.count() > 0) { 48 canvas->translate(this->width()/2, this->height()/2); 49 50 Sk3DView view; 51 view.rotateX(fRX); 52 view.rotateY(fRY); 53 view.applyToCanvas(canvas); 54 55 bool frontFace = view.dotWithNormal(0, 0, SK_Scalar1) < 0; 56 if (frontFace != fFrontFace) { 57 fFrontFace = frontFace; 58 fShaderIndex = (fShaderIndex + 1) % fShaders.count(); 59 } 60 61 SkPaint paint; 62 paint.setAntiAlias(true); 63 paint.setShader(fShaders[fShaderIndex]); 64 paint.setFilterQuality(kLow_SkFilterQuality); 65 SkRect r = { -150, -150, 150, 150 }; 66 canvas->drawRoundRect(r, 30, 30, paint); 67 } 68 } 69 onAnimate(double nanos)70 bool onAnimate(double nanos) override { 71 fRY = nanos ? TimeUtils::Scaled(1e-9 * nanos, 90, 360) : 0; 72 return true; 73 } 74 }; 75 } // namespace 76 DEF_SAMPLE( return new CameraView(); ) 77
