73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
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/*
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* Copyright 2015 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 "bench/SKPAnimationBench.h"
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#include "include/core/SkSurface.h"
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#include "tools/flags/CommandLineFlags.h"
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SKPAnimationBench::SKPAnimationBench(const char* name, const SkPicture* pic, const SkIRect& clip,
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sk_sp<Animation> animation, bool doLooping)
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: INHERITED(name, pic, clip, 1.0, doLooping)
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, fAnimation(std::move(animation)) {
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fUniqueName.printf("%s_%s", name, fAnimation->getTag());
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}
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const char* SKPAnimationBench::onGetUniqueName() {
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return fUniqueName.c_str();
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}
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void SKPAnimationBench::onPerCanvasPreDraw(SkCanvas* canvas) {
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INHERITED::onPerCanvasPreDraw(canvas);
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fDevBounds = canvas->getDeviceClipBounds();
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SkAssertResult(!fDevBounds.isEmpty());
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}
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void SKPAnimationBench::drawPicture() {
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for (int j = 0; j < this->tileRects().count(); ++j) {
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SkMatrix trans = SkMatrix::Translate(-1.f * this->tileRects()[j].fLeft,
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-1.f * this->tileRects()[j].fTop);
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fAnimation->preConcatFrameMatrix(fAnimationTime.nextRangeF(0, 1000), fDevBounds, &trans);
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this->surfaces()[j]->getCanvas()->drawPicture(this->picture(), &trans, nullptr);
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}
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for (int j = 0; j < this->tileRects().count(); ++j) {
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this->surfaces()[j]->flush();
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}
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}
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class ZoomAnimation : public SKPAnimationBench::Animation {
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public:
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ZoomAnimation(SkScalar zoomMax, double zoomPeriodMs)
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: fZoomMax(zoomMax)
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, fZoomPeriodMs(zoomPeriodMs) {
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}
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const char* getTag() override { return "zoom"; }
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void preConcatFrameMatrix(double animationTimeMs, const SkIRect& devBounds,
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SkMatrix* drawMatrix) override {
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double t = fmod(animationTimeMs / fZoomPeriodMs, 1.0); // t is in [0, 1).
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t = fabs(2 * t - 1); // Make t ping-pong between 0 and 1
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SkScalar zoom = static_cast<SkScalar>(pow(fZoomMax, t));
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SkPoint center = SkPoint::Make((devBounds.fLeft + devBounds.fRight) / 2.0f,
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(devBounds.fTop + devBounds.fBottom) / 2.0f);
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drawMatrix->preTranslate(center.fX, center.fY);
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drawMatrix->preScale(zoom, zoom);
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drawMatrix->preTranslate(-center.fX, -center.fY);
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}
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private:
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double fZoomMax;
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double fZoomPeriodMs;
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};
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sk_sp<SKPAnimationBench::Animation> SKPAnimationBench::MakeZoomAnimation(SkScalar zoomMax,
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double zoomPeriodMs) {
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return sk_make_sp<ZoomAnimation>(zoomMax, zoomPeriodMs);
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}
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