Method GetBatches

trinity/Tr2Model.cpp:33–92

}

void Tr2Model::GetBatches( ITriRenderBatchAccumulator* batches,
						   TriBatchType batchType,
						   const Matrix& m,
						   const Tr2PerObjectData* data )
{
	Matrix* pm = batches->Allocate<Matrix>();

	CCP_ASSERT_M( pm, "No memory available for opaque batches." );
	if( pm == NULL )
	{
		return;
	}
	*pm = m;

	// Transparent batches are sorted by the mesh bounding box order
	if( batchType == TRIBATCHTYPE_TRANSPARENT )
	{
		Tr2MeshItemList meshesToSort( "Tr2Model/GetBatches" );

		const Vector3 viewPos = Tr2Renderer::GetViewPosition();

		unsigned int meshCount = (unsigned int)m_meshes.size();
		for( unsigned int meshIx = 0; meshIx < meshCount; ++meshIx )
		{
			Tr2Mesh* pMesh = m_meshes[meshIx];
			if( pMesh->GetDisplay() )
			{
				Tr2MeshItem item;
				item.m_mesh = pMesh;

				auto center = TransformCoord( pMesh->GetBounds().Center(), m );
				item.m_distance = LengthSq( center - viewPos );
				meshesToSort.push_back( item );
			}
		}

		// Sort the list back to front
		std::sort( meshesToSort.begin(), meshesToSort.end() );

		// Now get the batches in order
		for( Tr2MeshItemList::iterator meshIt = meshesToSort.begin();
			 meshIt != meshesToSort.end();
			 ++meshIt )
		{
			Tr2Mesh* mesh = meshIt->m_mesh;
			GetBatchesFromMesh( mesh, batchType, batches, pm, data );
		}
	}
	else
	{
		// In all other cases, we just get the batches in order
		for( Tr2MeshVector::iterator meshIt = m_meshes.begin();
			 meshIt != m_meshes.end();
			 ++meshIt )
		{
			Tr2Mesh* mesh = *meshIt;
			GetBatchesFromMesh( mesh, batchType, batches, pm, data );
		}