/* SPDX-License-Identifier: Apache-2.0
 * Copyright 2011-2022 Blender Foundation */

#ifndef __PARTICLES_H__
#define __PARTICLES_H__

#include "util/array.h"
#include "util/types.h"

#include "graph/node.h"

CCL_NAMESPACE_BEGIN

class Device;
class DeviceScene;
class Progress;
class Scene;

/* Particle System */

struct Particle {
  int index;
  float age;
  float lifetime;
  float3 location;
  float4 rotation;
  float size;
  float3 velocity;
  float3 angular_velocity;
};

class ParticleSystem : public Node {
 public:
  NODE_DECLARE

  ParticleSystem();
  ~ParticleSystem();

  void tag_update(Scene *scene);

  array<Particle> particles;
};

/* ParticleSystem Manager */

class ParticleSystemManager {
  bool need_update_;

 public:
  ParticleSystemManager();
  ~ParticleSystemManager();

  void device_update_particles(Device *device,
                               DeviceScene *dscene,
                               Scene *scene,
                               Progress &progress);
  void device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress &progress);
  void device_free(Device *device, DeviceScene *dscene);

  void tag_update(Scene *scene);

  bool need_update() const;
};

CCL_NAMESPACE_END

#endif /* __PARTICLES_H__ */