DD::Image::SpriteGenerator Class Reference

#include <ParticlesSprite.h>

Public Member Functions
	SpriteGenerator (const GeoInfo *info)
size_t	getParticleCount () const
bool	getSprite (unsigned index, MatrixArray *transform, Sprite &sprite)
Hash	getHash (int i) const

Detailed Description

Helper structure to generate a particular sprite

Member Function Documentation

getParticleCount()

size_t SpriteGenerator::getParticleCount

(

)

const

get the number of available particles

Referenced by DD::Image::ParticlesSprite::tessellate().

getSprite()

bool SpriteGenerator::getSprite	(	unsigned	index,
		MatrixArray *	transform,
		Sprite &	sprite
	)

fill the sprite structure passed in for the particle at the given index, applying the given transform. This function returns true if the particle is visible after applying the transform, false if not. If the particle is not visible, the sprite structure will not contain a valid sprite and should not be used

References DD::Image::MatrixArray::matrix(), and DD::Image::Matrix4::z_axis().

Referenced by DD::Image::ParticlesSprite::tessellateSprite().

getHash()

Hash SpriteGenerator::getHash

(

int

i

)

const

get a unique hash for the particle; this can be used to identify the same particle at another point in time

Referenced by DD::Image::ParticlesSprite::tessellateSprite().