/*
   render/particle.h
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#ifndef __INCLUDED_RENDER_PARTICLE_H__
#define __INCLUDED_RENDER_PARTICLE_H__

#include "math/axis.h"
#include "math/color.h"
#include "math/vector3f.h"

namespace render {
	
/* ---- class Particle --------------------------------------------- */

/**
 * @brief One particle
 * */
class Particle
{
public:
	Particle(const math::Vector3f &location, const unsigned long timestamp);
	Particle(const math::Vector3f &location, const math::Vector3f &velocity, const unsigned long timestamp);

	/**
	 * @brief location of the particle
	 * */
	inline const math::Vector3f &location() const {
		return particle_location;
	}

	/**
	 * @brief velocity vector of the particle
	 * */
	inline const math::Vector3f &velocity() const {
		return particle_velocity;
	}
	
	const float radius() const
	{
		return particle_radius;
	}
	
	const float alpha() const
	{
		return particle_alpha;
	}
		
	/**
	 * @brief creation timestamp
	 * */
	inline const unsigned long timestamp() const {
		return particle_timestamp;
	}

	/**
	 * @brief reference to the location of the particle
	 * */
	inline math::Vector3f &get_location() {
		return particle_location;
	}

	/**
	 * @brief reference velocity vector of the particle
	 * */
	inline math::Vector3f &get_velocity() {
		return particle_velocity;
	}
	
	/**
	 * @brief set the location of the particle
	 * */
	inline void set_location(const math::Vector3f &location)
	{
		particle_location.assign(location);
	}
	
	/**
	 * @brief set the velocity of the particle
	 * */
	inline void set_velocity(const math::Vector3f &velocity)
	{
		particle_velocity.assign(velocity);
	}
	
	inline void set_radius(const float radius)
	{
		particle_radius = radius;
	}
	
	inline void set_alpha(const float alpha)
	{
		particle_alpha = alpha;
	}

protected:
	math::Vector3f	particle_location;
	math::Vector3f	particle_velocity;
	float		particle_radius;
	float		particle_alpha;
	unsigned long	particle_timestamp;
};

} // namespace

#endif // __INCLUDED_RENDER_PARTICLE_H__