81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkCanvas.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkString.h"
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#include "include/utils/SkCamera.h"
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#include "src/effects/SkEmbossMaskFilter.h"
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#include "tools/DecodeFile.h"
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#include "tools/Resources.h"
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#include "tools/timer/TimeUtils.h"
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#include "tools/viewer/Slide.h"
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namespace {
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class CameraSlide : public Slide {
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SkTArray<sk_sp<SkShader>> fShaders;
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int fShaderIndex = 0;
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bool fFrontFace = false;
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SkScalar fRX = 0;
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SkScalar fRY = 0;
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SkSize fSize;
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public:
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CameraSlide() { fName = "Camera"; }
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void load(SkScalar w, SkScalar h) override {
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fSize = {w, h};
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for (const char* resource : {
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"images/mandrill_512_q075.jpg",
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"images/dog.jpg",
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"images/gamut.png",
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}) {
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SkBitmap bm;
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if (GetResourceAsBitmap(resource, &bm)) {
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SkRect src = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
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SkRect dst = { -150, -150, 150, 150 };
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fShaders.push_back(bm.makeShader(SkSamplingOptions(SkFilterMode::kLinear),
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SkMatrix::RectToRect(src, dst)));
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}
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}
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}
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void draw(SkCanvas* canvas) override {
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canvas->clear(0xFFDDDDDD);
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if (fShaders.size() > 0) {
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canvas->translate(fSize.width()/2, fSize.height()/2);
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Sk3DView view;
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view.rotateX(fRX);
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view.rotateY(fRY);
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view.applyToCanvas(canvas);
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bool frontFace = view.dotWithNormal(0, 0, SK_Scalar1) < 0;
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if (frontFace != fFrontFace) {
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fFrontFace = frontFace;
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fShaderIndex = (fShaderIndex + 1) % fShaders.size();
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}
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setShader(fShaders[fShaderIndex]);
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SkRect r = { -150, -150, 150, 150 };
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canvas->drawRoundRect(r, 30, 30, paint);
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}
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}
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void resize(SkScalar w, SkScalar h) override { fSize = {w, h}; }
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bool animate(double nanos) override {
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fRY = nanos ? TimeUtils::Scaled(1e-9 * nanos, 90, 360) : 0;
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return true;
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}
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};
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} // namespace
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DEF_SLIDE( return new CameraSlide(); )
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