125daa4d1a
- Collapsed the per-particle data into a single struct, and use that to communicate with drawables, too. Let the drawables manage allocation of xforms, colors, etc. Helpful for non-atlas drawables, and just to keep the effect code simpler. - Having all of the params in a single struct allows us to move the remaining animated behaviors into affectors (color/frame). - Added SkColorCurve, which works like SkCurve for SkColor4f. Use that to create a color affector (rather than simple start/end colors in the effect params). - Also put the stable random in SkParticleState. This is going to be necessary if/when we change affectors to operate on all particles (rather than one at a time). Still need to move t value into the particle struct (or eval it from the lifetime params on demand). Change-Id: Icf39116acbfd5d6e8eb91e9affbd8898d106211d Reviewed-on: https://skia-review.googlesource.com/c/193473 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
/*
|
|
* 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 SkParticleAffector_DEFINED
|
|
#define SkParticleAffector_DEFINED
|
|
|
|
#include "SkReflected.h"
|
|
|
|
#include "SkPoint.h"
|
|
|
|
struct SkColorCurve;
|
|
struct SkCurve;
|
|
struct SkParticleState;
|
|
struct SkParticleUpdateParams;
|
|
|
|
class SkParticleAffector : public SkReflected {
|
|
public:
|
|
REFLECTED_ABSTRACT(SkParticleAffector, SkReflected)
|
|
|
|
virtual void apply(SkParticleUpdateParams& params, SkParticleState& ps) = 0;
|
|
|
|
static void RegisterAffectorTypes();
|
|
|
|
static sk_sp<SkParticleAffector> MakeLinearVelocity(const SkCurve& angle,
|
|
const SkCurve& strength,
|
|
bool force);
|
|
static sk_sp<SkParticleAffector> MakePointForce(SkPoint point, SkScalar constant,
|
|
SkScalar invSquare);
|
|
static sk_sp<SkParticleAffector> MakeOrientAlongVelocity();
|
|
|
|
static sk_sp<SkParticleAffector> MakeSize(const SkCurve& curve);
|
|
static sk_sp<SkParticleAffector> MakeFrame(const SkCurve& curve);
|
|
static sk_sp<SkParticleAffector> MakeColor(const SkColorCurve& curve);
|
|
};
|
|
|
|
#endif // SkParticleAffector_DEFINED
|