diff options
Diffstat (limited to 'Source/WebCore/rendering/ExclusionPolygon.cpp')
| -rw-r--r-- | Source/WebCore/rendering/ExclusionPolygon.cpp | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/Source/WebCore/rendering/ExclusionPolygon.cpp b/Source/WebCore/rendering/ExclusionPolygon.cpp index efb6acddb..21beac1ec 100644 --- a/Source/WebCore/rendering/ExclusionPolygon.cpp +++ b/Source/WebCore/rendering/ExclusionPolygon.cpp @@ -190,13 +190,13 @@ static inline bool getVertexIntersectionVertices(const EdgeIntersection& interse if ((intersection.type == VertexMinY && (thisEdge.vertex1().y() < thisEdge.vertex2().y())) || (intersection.type == VertexMaxY && (thisEdge.vertex1().y() > thisEdge.vertex2().y()))) { - prevVertex = polygon.vertexAt(thisEdge.previousEdge().vertexIndex2); + prevVertex = polygon.vertexAt(thisEdge.previousEdge().vertexIndex1); thisVertex = polygon.vertexAt(thisEdge.vertexIndex1); nextVertex = polygon.vertexAt(thisEdge.vertexIndex2); } else { prevVertex = polygon.vertexAt(thisEdge.vertexIndex1); thisVertex = polygon.vertexAt(thisEdge.vertexIndex2); - nextVertex = polygon.vertexAt(thisEdge.nextEdge().vertexIndex1); + nextVertex = polygon.vertexAt(thisEdge.nextEdge().vertexIndex2); } return true; @@ -219,7 +219,7 @@ static bool compareEdgeIntersectionX(const EdgeIntersection& intersection1, cons return (x1 == x2) ? intersection1.type < intersection2.type : x1 < x2; } -void ExclusionPolygon::computeXIntersections(float y, Vector<ExclusionInterval>& result) const +void ExclusionPolygon::computeXIntersections(float y, bool isMinY, Vector<ExclusionInterval>& result) const { Vector<ExclusionPolygon::EdgeInterval> overlappingEdges; m_edgeTree.allOverlaps(ExclusionPolygon::EdgeInterval(y, y, 0), overlappingEdges); @@ -265,19 +265,19 @@ void ExclusionPolygon::computeXIntersections(float y, Vector<ExclusionInterval>& } if (evenOddCrossing) { - bool edgeCrossing = false; - if (thisIntersection.type == Normal || !inside || index == intersections.size() - 1) - edgeCrossing = true; - else { + bool edgeCrossing = thisIntersection.type == Normal; + if (!edgeCrossing) { FloatPoint prevVertex; FloatPoint thisVertex; FloatPoint nextVertex; if (getVertexIntersectionVertices(thisIntersection, prevVertex, thisVertex, nextVertex)) { - if (prevVertex.y() == y) - edgeCrossing = (thisVertex.x() > prevVertex.x()) ? nextVertex.y() > y : nextVertex.y() < y; + if (nextVertex.y() == y) + edgeCrossing = (isMinY) ? prevVertex.y() > y : prevVertex.y() < y; + else if (prevVertex.y() == y) + edgeCrossing = (isMinY) ? nextVertex.y() > y : nextVertex.y() < y; else - edgeCrossing = (nextVertex.y() != y); + edgeCrossing = true; } } if (edgeCrossing) @@ -331,8 +331,8 @@ void ExclusionPolygon::getExcludedIntervals(float logicalTop, float logicalHeigh float y2 = maxYForLogicalLine(logicalTop, logicalHeight); Vector<ExclusionInterval> y1XIntervals, y2XIntervals; - computeXIntersections(y1, y1XIntervals); - computeXIntersections(y2, y2XIntervals); + computeXIntersections(y1, true, y1XIntervals); + computeXIntersections(y2, false, y2XIntervals); Vector<ExclusionInterval> mergedIntervals; mergeExclusionIntervals(y1XIntervals, y2XIntervals, mergedIntervals); @@ -358,8 +358,8 @@ void ExclusionPolygon::getIncludedIntervals(float logicalTop, float logicalHeigh float y2 = maxYForLogicalLine(logicalTop, logicalHeight); Vector<ExclusionInterval> y1XIntervals, y2XIntervals; - computeXIntersections(y1, y1XIntervals); - computeXIntersections(y2, y2XIntervals); + computeXIntersections(y1, true, y1XIntervals); + computeXIntersections(y2, false, y2XIntervals); Vector<ExclusionInterval> commonIntervals; intersectExclusionIntervals(y1XIntervals, y2XIntervals, commonIntervals); |