| 155 | } |
| 156 | |
| 157 | template<typename From> ReturnType operator()( const From* data ) |
| 158 | { |
| 159 | typename From::Ptr result = static_cast< From* >( Object::create( data->typeId() ).get() ); |
| 160 | typename From::ValueType &trg = result->writable(); |
| 161 | const typename From::ValueType &src = data->readable(); |
| 162 | |
| 163 | size_t numVerts = m_mesh->variableSize( PrimitiveVariable::Vertex ); |
| 164 | std::vector<int> count( numVerts, 0 ); |
| 165 | trg.resize( numVerts, typename From::ValueType::value_type( 0.0f ) ); |
| 166 | |
| 167 | const std::vector<int>& vertexIds = m_mesh->vertexIds()->readable(); |
| 168 | std::vector<int>::const_iterator vertexIdIt = vertexIds.begin(); |
| 169 | typename From::ValueType::const_iterator srcIt = src.begin(), srcEnd = src.end(); |
| 170 | |
| 171 | int cancelTestCounter = 0; |
| 172 | for( ; srcIt != srcEnd ; ++srcIt, ++vertexIdIt ) |
| 173 | { |
| 174 | if( cancelTestCounter++ == 1000 ) |
| 175 | { |
| 176 | Canceller::check( m_canceller ); |
| 177 | cancelTestCounter = 0; |
| 178 | } |
| 179 | trg[ *vertexIdIt ] += *srcIt; |
| 180 | ++count[ *vertexIdIt ]; |
| 181 | } |
| 182 | |
| 183 | std::vector<int>::const_iterator cIt = count.begin(); |
| 184 | typename From::ValueType::iterator trgIt = trg.begin(), trgEnd = trg.end(); |
| 185 | for( trgIt = trg.begin(); trgIt != trgEnd ; ++trgIt, ++cIt ) |
| 186 | { |
| 187 | if( cancelTestCounter++ == 1000 ) |
| 188 | { |
| 189 | Canceller::check( m_canceller ); |
| 190 | cancelTestCounter = 0; |
| 191 | } |
| 192 | *trgIt /= *cIt; |
| 193 | } |
| 194 | |
| 195 | IECoreScene::PrimitiveVariableAlgos::GeometricInterpretationCopier<From> copier; |
| 196 | copier( data, result.get() ); |
| 197 | |
| 198 | return result; |
| 199 | } |
| 200 | |
| 201 | const MeshPrimitive *m_mesh; |
| 202 | const Canceller *m_canceller; |