Function deletePoints

src/IECoreScene/PointsAlgo.cpp:111–154

template<typename T>
PointsPrimitivePtr deletePoints( const PointsPrimitive *pointsPrimitive, IECoreScene::PrimitiveVariable::IndexedView<T>& deleteFlagView, bool invert, const Canceller *canceller )
{
	PointsPrimitivePtr outPointsPrimitive = new PointsPrimitive( 0 );

	IECoreScene::PrimitiveVariableAlgos::DeleteFlaggedUniformFunctor<T> vertexFunctor( deleteFlagView, invert );

	for( PrimitiveVariableMap::const_iterator it = pointsPrimitive->variables.begin(), e = pointsPrimitive->variables.end(); it != e; ++it )
	{
		Canceller::check( canceller );
		switch( it->second.interpolation )
		{
			case PrimitiveVariable::Vertex:
			case PrimitiveVariable::Varying:
			case PrimitiveVariable::FaceVarying:
			{
				if( !pointsPrimitive->isPrimitiveVariableValid( it->second ) )
				{
					throw InvalidArgumentException(
						boost::str ( boost::format( "PointsAlgo::deletePoints cannot process invalid primitive variable \"%s\"" ) % it->first ) );
				}
				const IECore::Data *inputData = it->second.data.get();
				vertexFunctor.setIndices( it->second.indices.get() );
				IECoreScene::PrimitiveVariableAlgos::IndexedData indexedData = dispatch( inputData, vertexFunctor );
				outPointsPrimitive->variables[it->first] = PrimitiveVariable( it->second.interpolation, indexedData.data, indexedData.indices );
				break;
			}
			case PrimitiveVariable::Uniform:
			case PrimitiveVariable::Constant:
			case PrimitiveVariable::Invalid:
			{
				outPointsPrimitive->variables[it->first] = it->second;
				break;
			}
		}
	}

	V3fVectorDataPtr positionData = outPointsPrimitive->variableData<V3fVectorData>( "P" );
	if( positionData )
	{
		outPointsPrimitive->setNumPoints( positionData->readable().size() );
	}

	return outPointsPrimitive;
}

struct CollectDataFn
{