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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 "include/core/SkCanvas.h"
#include "include/core/SkShader.h"
#include "include/core/SkString.h"
#include "include/utils/SkCamera.h"
#include "samplecode/DecodeFile.h"
#include "samplecode/Sample.h"
#include "src/effects/SkEmbossMaskFilter.h"
#include "tools/Resources.h"
#include "tools/timer/TimeUtils.h"
namespace {
class CameraView : public Sample {
SkTArray<sk_sp<SkShader>> fShaders;
int fShaderIndex = 0;
bool fFrontFace = false;
SkScalar fRX = 0;
SkScalar fRY = 0;
SkString name() override { return SkString("Camera"); }
void onOnceBeforeDraw() override {
for (const char* resource : {
"images/mandrill_512_q075.jpg",
"images/dog.jpg",
"images/gamut.png",
}) {
SkBitmap bm;
if (GetResourceAsBitmap(resource, &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));
}
}
this->setBGColor(0xFFDDDDDD);
}
void onDrawContent(SkCanvas* canvas) override {
if (fShaders.count() > 0) {
canvas->translate(this->width()/2, this->height()/2);
Sk3DView view;
view.rotateX(fRX);
view.rotateY(fRY);
view.applyToCanvas(canvas);
bool frontFace = view.dotWithNormal(0, 0, SK_Scalar1) < 0;
if (frontFace != fFrontFace) {
fFrontFace = frontFace;
fShaderIndex = (fShaderIndex + 1) % fShaders.count();
}
SkPaint paint;
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(double nanos) override {
fRY = nanos ? TimeUtils::Scaled(1e-9 * nanos, 90, 360) : 0;
return true;
}
};
} // namespace
DEF_SAMPLE( return new CameraView(); )
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