Method numParticles

src/IECoreScene/NParticleReader.cpp:177–207

}

size_t NParticleReader::numParticles()
{
	if( !open() )
	{
		return 0;
	}

	int numParticles = 0;
	int frameIndex = m_frameParameter->getNumericValue();
	int frame = m_frames->readable()[frameIndex];
	std::map<int, IFFFile::Chunk::ChunkIterator>::const_iterator frameIt = frameToRootChildren.find( frame );
	if( frameIt == frameToRootChildren.end() )
	{
		msg( Msg::Warning, "NParticleReader::attributeNames()", boost::format( "Frame '%d' (index '%d') does not exist in '%s'." ) % frame % frameIndex % m_iffFileName );
		return 0;
	}

	IFFFile::Chunk::ChunkIterator child = frameIt->second;
	IFFFile::Chunk::ChunkIterator it = child->childrenBegin();

	for ( ; it != child->childrenEnd(); it++ )
	{
		if ( it->type().id() == kSIZE )
		{
			it->read( numParticles );
			break;
		}
	}

	return numParticles;
}

void NParticleReader::attributeNames( std::vector<std::string> &names )
{