| 35 | |
| 36 | template <class ContourCombiner> |
| 37 | typename ShapeDistanceFinder<ContourCombiner>::DistanceType ShapeDistanceFinder<ContourCombiner>::oneShotDistance(const Shape &shape, const Point2 &origin) { |
| 38 | ContourCombiner contourCombiner(shape); |
| 39 | contourCombiner.reset(origin); |
| 40 | |
| 41 | for (std::vector<Contour>::const_iterator contour = shape.contours.begin(); contour != shape.contours.end(); ++contour) { |
| 42 | if (!contour->edges.empty()) { |
| 43 | typename ContourCombiner::EdgeSelectorType &edgeSelector = contourCombiner.edgeSelector(int(contour-shape.contours.begin())); |
| 44 | |
| 45 | const EdgeSegment *prevEdge = contour->edges.size() >= 2 ? *(contour->edges.end()-2) : *contour->edges.begin(); |
| 46 | const EdgeSegment *curEdge = contour->edges.back(); |
| 47 | for (std::vector<EdgeHolder>::const_iterator edge = contour->edges.begin(); edge != contour->edges.end(); ++edge) { |
| 48 | const EdgeSegment *nextEdge = *edge; |
| 49 | typename ContourCombiner::EdgeSelectorType::EdgeCache dummy; |
| 50 | edgeSelector.addEdge(dummy, prevEdge, curEdge, nextEdge); |
| 51 | prevEdge = curEdge; |
| 52 | curEdge = nextEdge; |
| 53 | } |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | return contourCombiner.distance(); |
| 58 | } |
| 59 | |
| 60 | } |