| 1558 | //------------------------------------------------------------------------------ |
| 1559 | |
| 1560 | bool Clipper::ExecuteInternal() |
| 1561 | { |
| 1562 | bool succeeded = true; |
| 1563 | try { |
| 1564 | Reset(); |
| 1565 | m_Maxima = MaximaList(); |
| 1566 | m_SortedEdges = 0; |
| 1567 | |
| 1568 | succeeded = true; |
| 1569 | cInt botY, topY; |
| 1570 | if (!PopScanbeam(botY)) return false; |
| 1571 | InsertLocalMinimaIntoAEL(botY); |
| 1572 | while (PopScanbeam(topY) || LocalMinimaPending()) |
| 1573 | { |
| 1574 | ProcessHorizontals(); |
| 1575 | ClearGhostJoins(); |
| 1576 | if (!ProcessIntersections(topY)) |
| 1577 | { |
| 1578 | succeeded = false; |
| 1579 | break; |
| 1580 | } |
| 1581 | ProcessEdgesAtTopOfScanbeam(topY); |
| 1582 | botY = topY; |
| 1583 | InsertLocalMinimaIntoAEL(botY); |
| 1584 | } |
| 1585 | } |
| 1586 | catch(...) |
| 1587 | { |
| 1588 | succeeded = false; |
| 1589 | } |
| 1590 | |
| 1591 | if (succeeded) |
| 1592 | { |
| 1593 | //fix orientations ... |
| 1594 | for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) |
| 1595 | { |
| 1596 | OutRec *outRec = m_PolyOuts[i]; |
| 1597 | if (!outRec->Pts || outRec->IsOpen) continue; |
| 1598 | if ((outRec->IsHole ^ m_ReverseOutput) == (Area(*outRec) > 0)) |
| 1599 | ReversePolyPtLinks(outRec->Pts); |
| 1600 | } |
| 1601 | |
| 1602 | if (!m_Joins.empty()) JoinCommonEdges(); |
| 1603 | |
| 1604 | //unfortunately FixupOutPolygon() must be done after JoinCommonEdges() |
| 1605 | for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) |
| 1606 | { |
| 1607 | OutRec *outRec = m_PolyOuts[i]; |
| 1608 | if (!outRec->Pts) continue; |
| 1609 | if (outRec->IsOpen) |
| 1610 | FixupOutPolyline(*outRec); |
| 1611 | else |
| 1612 | FixupOutPolygon(*outRec); |
| 1613 | } |
| 1614 | |
| 1615 | if (m_StrictSimple) DoSimplePolygons(); |
| 1616 | } |
| 1617 |
nothing calls this directly
no test coverage detected