41248071ac
gm, slides, and samples no longer need to know about the implementation
details of AnimTimer.
This
virtual bool onAnimate(const AnimTimer&);
becomes this:
virtual bool onAnimate(double /*nanoseconds*/);
which is much easier to reason about.
AnimTimer itself is now part of viewer.
Change-Id: Ib70bf7a0798b1991f25204ae84f70463cdbeb358
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/226838
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
147 lines
4.0 KiB
C++
147 lines
4.0 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/SkColorPriv.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkPathMeasure.h"
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#include "include/core/SkRegion.h"
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#include "include/core/SkShader.h"
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#include "include/effects/Sk1DPathEffect.h"
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#include "include/effects/SkCornerPathEffect.h"
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#include "include/effects/SkGradientShader.h"
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#include "include/utils/SkRandom.h"
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#include "samplecode/Sample.h"
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#include "src/utils/SkUTF.h"
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#include "tools/timer/TimeUtils.h"
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#define CORNER_RADIUS 12
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static const int gXY[] = {
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4, 0, 0, -4, 8, -4, 12, 0, 8, 4, 0, 4
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};
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static sk_sp<SkPathEffect> make_pe(int flags, SkScalar phase) {
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if (flags == 1) {
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return SkCornerPathEffect::Make(SkIntToScalar(CORNER_RADIUS));
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}
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SkPath path;
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path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1]));
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for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2)
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path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1]));
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path.close();
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path.offset(SkIntToScalar(-6), 0);
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auto outer = SkPath1DPathEffect::Make(path, 12, phase, SkPath1DPathEffect::kRotate_Style);
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if (flags == 2)
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return outer;
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auto inner = SkCornerPathEffect::Make(SkIntToScalar(CORNER_RADIUS));
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return SkPathEffect::MakeCompose(outer, inner);
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}
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static sk_sp<SkPathEffect> make_warp_pe(SkScalar phase) {
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SkPath path;
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path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1]));
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for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2) {
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path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1]));
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}
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path.close();
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path.offset(SkIntToScalar(-6), 0);
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auto outer = SkPath1DPathEffect::Make(
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path, 12, phase, SkPath1DPathEffect::kMorph_Style);
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auto inner = SkCornerPathEffect::Make(SkIntToScalar(CORNER_RADIUS));
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return SkPathEffect::MakeCompose(outer, inner);
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}
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///////////////////////////////////////////////////////////
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#include "include/core/SkColorFilter.h"
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class PathEffectView : public Sample {
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SkPath fPath;
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SkPoint fClickPt;
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SkScalar fPhase;
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public:
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PathEffectView() : fPhase(0) {
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}
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protected:
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void onOnceBeforeDraw() override {
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SkRandom rand;
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int steps = 20;
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SkScalar dist = SkIntToScalar(400);
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SkScalar x = SkIntToScalar(20);
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SkScalar y = SkIntToScalar(50);
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fPath.moveTo(x, y);
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for (int i = 0; i < steps; i++) {
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x += dist/steps;
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SkScalar tmpY = y + SkIntToScalar(rand.nextS() % 25);
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if (i == steps/2) {
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fPath.moveTo(x, tmpY);
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} else {
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fPath.lineTo(x, tmpY);
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}
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}
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{
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SkRect oval;
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oval.set(SkIntToScalar(20), SkIntToScalar(30),
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SkIntToScalar(100), SkIntToScalar(60));
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oval.offset(x, 0);
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fPath.addRoundRect(oval, SkIntToScalar(8), SkIntToScalar(8));
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}
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fClickPt.set(SkIntToScalar(200), SkIntToScalar(200));
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this->setBGColor(0xFFDDDDDD);
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}
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SkString name() override { return SkString("PathEffects"); }
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void onDrawContent(SkCanvas* canvas) override {
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SkPaint paint;
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canvas->translate(0, 50);
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paint.setColor(SK_ColorBLUE);
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paint.setPathEffect(make_pe(2, fPhase));
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canvas->drawPath(fPath, paint);
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canvas->translate(0, 50);
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paint.setARGB(0xFF, 0, 0xBB, 0);
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paint.setPathEffect(make_pe(3, fPhase));
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canvas->drawPath(fPath, paint);
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canvas->translate(0, 50);
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paint.setARGB(0xFF, 0, 0, 0);
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paint.setPathEffect(make_warp_pe(fPhase));
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canvas->drawPath(fPath, paint);
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}
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bool onAnimate(double nanos) override {
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fPhase = TimeUtils::Scaled(1e-9 * nanos, 40);
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return true;
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}
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private:
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typedef Sample INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_SAMPLE( return new PathEffectView(); )
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