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0028213: Visualization, StdPrs_ShadedShape - compute face edges for triangulation-only Faces

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This commit is contained in:
kgv
2016-12-12 12:54:25 +03:00
committed by apn
parent 3a4a396251
commit 0a8630615d
4 changed files with 98 additions and 47 deletions
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40
src/StdPrs/StdPrs_ShadedShape.cxx
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@@ -304,6 +304,17 @@ namespace
Standard_Integer aNbPolylines = 0;
TopLoc_Location aTrsf;
TColgp_SequenceOfPnt aSeqPntsExtra;
for (TopExp_Explorer aFaceIter (theShape, TopAbs_FACE); aFaceIter.More(); aFaceIter.Next())
{
const TopoDS_Face& aFace = TopoDS::Face (aFaceIter.Current());
TopoDS_Iterator aSubShapeIter (aFace);
if (!aSubShapeIter.More())
{
// handle specifically faces without boundary definition (triangulation-only)
StdPrs_WFShape::AddEdgesOnTriangulation (aSeqPntsExtra, aFace, Standard_False);
}
}
// explore all boundary edges
TopTools_IndexedDataMapOfShapeListOfShape anEdgesMap;
@@ -335,12 +346,24 @@ namespace
}
if (aNodeNumber == 0)
{
return Handle(Graphic3d_ArrayOfSegments)();
if (aSeqPntsExtra.Size() < 2)
{
return Handle(Graphic3d_ArrayOfSegments)();
}
Standard_Integer aNbVertices = aSeqPntsExtra.Size();
Handle(Graphic3d_ArrayOfSegments) aSegments = new Graphic3d_ArrayOfSegments (aNbVertices);
for (Standard_Integer aPntIter = 1; aPntIter <= aNbVertices; aPntIter += 2)
{
aSegments->AddVertex (aSeqPntsExtra.Value (aPntIter));
aSegments->AddVertex (aSeqPntsExtra.Value (aPntIter + 1));
}
return aSegments;
}
// create indexed segments array to pack polylines from different edges into single array
const Standard_Integer aSegmentEdgeNb = (aNodeNumber - aNbPolylines) * 2;
Handle(Graphic3d_ArrayOfSegments) aSegments = new Graphic3d_ArrayOfSegments (aNodeNumber, aSegmentEdgeNb);
Handle(Graphic3d_ArrayOfSegments) aSegments = new Graphic3d_ArrayOfSegments (aNodeNumber + aSeqPntsExtra.Size(), aSegmentEdgeNb + aSeqPntsExtra.Size());
for (TopTools_IndexedDataMapOfShapeListOfShape::Iterator anEdgeIter (anEdgesMap); anEdgeIter.More(); anEdgeIter.Next())
{
if (anEdgeIter.Value().Extent() == 0)
@@ -388,6 +411,19 @@ namespace
}
}
}
{
Standard_Integer aSegmentEdge = aSegments->VertexNumber();
const Standard_Integer aNbVertices = aSeqPntsExtra.Size();
for (Standard_Integer aPntIter = 1; aPntIter <= aNbVertices; aPntIter += 2)
{
aSegments->AddVertex (aSeqPntsExtra.Value (aPntIter));
aSegments->AddEdge (++aSegmentEdge);
aSegments->AddVertex (aSeqPntsExtra.Value (aPntIter + 1));
aSegments->AddEdge (++aSegmentEdge);
}
}
return aSegments;
}