Public Member Functions | |
| SpriteGenerator (const GeoInfo *info) | |
| size_t | getParticleCount () const |
| bool | getSprite (unsigned index, MatrixArray *transform, Sprite &sprite) |
| Hash | getHash (int i) const |
Helper structure to generate a particular sprite
| size_t SpriteGenerator::getParticleCount | ( | ) | const |
get the number of available particles
| 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().
| 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().