| /* |
| * Copyright 2019 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkParticleEffect_DEFINED |
| #define SkParticleEffect_DEFINED |
| |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkString.h" |
| #include "include/private/SkTArray.h" |
| #include "include/private/SkTemplates.h" |
| #include "include/utils/SkRandom.h" |
| #include "modules/particles/include/SkParticleData.h" |
| #include "modules/particles/include/SkReflected.h" |
| |
| #include <memory> |
| |
| class SkCanvas; |
| class SkParticleDrawable; |
| class SkParticleExternalValue; |
| |
| namespace SkSL { |
| struct ByteCode; |
| class Compiler; |
| } |
| |
| class SkParticleBinding : public SkReflected { |
| public: |
| SkParticleBinding(const char* name = "name") : fName(name) {} |
| |
| REFLECTED_ABSTRACT(SkParticleBinding, SkReflected) |
| |
| void visitFields(SkFieldVisitor* v) override; |
| virtual std::unique_ptr<SkParticleExternalValue> toValue(SkSL::Compiler&) = 0; |
| |
| static void RegisterBindingTypes(); |
| |
| protected: |
| SkString fName; |
| }; |
| |
| class SkParticleEffectParams : public SkRefCnt { |
| public: |
| SkParticleEffectParams(); |
| |
| int fMaxCount; |
| float fEffectDuration; |
| float fRate; |
| |
| // Drawable (image, sprite sheet, etc.) |
| sk_sp<SkParticleDrawable> fDrawable; |
| |
| // Code with spawn() and update() functions |
| SkString fCode; |
| |
| SkTArray<sk_sp<SkParticleBinding>> fBindings; |
| |
| void visitFields(SkFieldVisitor* v); |
| |
| private: |
| friend class SkParticleEffect; |
| |
| // Cached |
| std::unique_ptr<SkSL::ByteCode> fByteCode; |
| SkTArray<std::unique_ptr<SkParticleExternalValue>> fExternalValues; |
| |
| void rebuild(); |
| }; |
| |
| class SkParticleEffect : public SkRefCnt { |
| public: |
| SkParticleEffect(sk_sp<SkParticleEffectParams> params, const SkRandom& random); |
| |
| void start(double now, bool looping = false); |
| void update(double now); |
| void draw(SkCanvas* canvas); |
| |
| bool isAlive() const { return fSpawnTime >= 0; } |
| int getCount() const { return fCount; } |
| |
| private: |
| void setCapacity(int capacity); |
| |
| sk_sp<SkParticleEffectParams> fParams; |
| |
| SkRandom fRandom; |
| |
| bool fLooping; |
| double fSpawnTime; |
| |
| int fCount; |
| double fLastTime; |
| float fSpawnRemainder; |
| |
| SkParticles fParticles; |
| SkAutoTMalloc<SkRandom> fStableRandoms; |
| |
| // Cached |
| int fCapacity; |
| }; |
| |
| #endif // SkParticleEffect_DEFINED |