skia2/samplecode/SampleCamera.cpp
reed@android.com f2b98d67dc merge with changes for GPU backend
git-svn-id: http://skia.googlecode.com/svn/trunk@637 2bbb7eff-a529-9590-31e7-b0007b416f81
2010-12-20 18:26:13 +00:00

115 lines
3.3 KiB
C++

#include "SampleCode.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"
#include "SkImageDecoder.h"
class CameraView : public SkView {
SkTDArray<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 (SkImageDecoder::DecodeFile(str.c_str(), &bm)) {
SkShader* s = SkShader::CreateBitmapShader(bm,
SkShader::kClamp_TileMode,
SkShader::kClamp_TileMode);
SkRect src = { 0, 0, bm.width(), bm.height() };
SkRect dst = { -150, -150, 150, 150 };
SkMatrix matrix;
matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit);
s->setLocalMatrix(matrix);
*fShaders.append() = s;
} else {
break;
}
}
}
virtual ~CameraView() {
fShaders.unrefAll();
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt))
{
SampleCode::TitleR(evt, "Camera");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawBG(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
canvas->translate(this->width()/2, this->height()/2);
Sk3DView view;
view.rotateX(fRX);
view.rotateY(fRY);
view.applyToCanvas(canvas);
SkPaint paint;
SkScalar rad = SkIntToScalar(50);
SkScalar dim = rad*2;
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]);
#if 0
canvas->drawCircle(0, 0, rad, paint);
canvas->drawCircle(-dim, -dim, rad, paint);
canvas->drawCircle(-dim, dim, rad, paint);
canvas->drawCircle( dim, -dim, rad, paint);
canvas->drawCircle( dim, dim, rad, paint);
#else
SkRect r = { -150, -150, 150, 150 };
canvas->drawRoundRect(r, 30, 30, paint);
#endif
}
fRY += SampleCode::GetAnimSecondsDelta() * 90;
if (fRY >= SkIntToScalar(360)) {
fRY = 0;
}
this->inval(NULL);
}
private:
SkScalar fRX, fRY, fRZ;
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new CameraView; }
static SkViewRegister reg(MyFactory);