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/*
* 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 "DecodeFile.h"
#include "SampleCode.h"
#include "SkAnimTimer.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkCamera.h"
#include "SkEmbossMaskFilter.h"
#include "SkGradientShader.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkRandom.h"
class CameraView : public SampleView {
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(SkShader::MakeBitmapShader(bm,
SkShader::kClamp_TileMode,
SkShader::kClamp_TileMode,
&matrix));
} else {
break;
}
}
this->setBGColor(0xFFDDDDDD);
}
protected:
// overrides from SkEventSink
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::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 SkAnimTimer& timer) override {
if (timer.isStopped()) {
fRY = 0;
} else {
fRY = timer.scaled(90, 360);
}
return true;
}
private:
SkScalar fRX, fRY, fRZ;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new CameraView; }
static SkViewRegister reg(MyFactory);
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