| 414 | } |
| 415 | |
| 416 | void CurvesPrimitive::ensureVertIds() const |
| 417 | { |
| 418 | if( m_memberData->vertIdsBuffer ) |
| 419 | { |
| 420 | return; |
| 421 | } |
| 422 | |
| 423 | IECore::UIntVectorDataPtr vertIdsData = new IECore::UIntVectorData; |
| 424 | vector<unsigned int> &vertIds = vertIdsData->writable(); |
| 425 | |
| 426 | unsigned vertIndex = 0; |
| 427 | const vector<int> &vertsPerCurve = m_memberData->vertsPerCurve->readable(); |
| 428 | for( vector<int>::const_iterator it = vertsPerCurve.begin(), eIt = vertsPerCurve.end(); it != eIt; it++ ) |
| 429 | { |
| 430 | const int numSegments = *it - 1; |
| 431 | for( int i = 0; i < numSegments; i++ ) |
| 432 | { |
| 433 | vertIds.push_back( vertIndex ); |
| 434 | vertIds.push_back( ++vertIndex ); |
| 435 | } |
| 436 | if( m_memberData->periodic ) |
| 437 | { |
| 438 | vertIds.push_back( vertIndex ); |
| 439 | vertIds.push_back( vertIndex - numSegments ); |
| 440 | } |
| 441 | vertIndex++; |
| 442 | } |
| 443 | |
| 444 | m_memberData->numVertIds = vertIds.size(); |
| 445 | |
| 446 | CachedConverterPtr cachedConverter = CachedConverter::defaultCachedConverter(); |
| 447 | m_memberData->vertIdsBuffer = IECore::runTimeCast<const Buffer>( cachedConverter->convert( vertIdsData.get() ) ); |
| 448 | } |
| 449 | |
| 450 | void CurvesPrimitive::ensureAdjacencyVertIds() const |
| 451 | { |