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0022725: BRepOffsetAPI_ThruSections algorithm produces twisted surface on some wires

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This commit is contained in:
JGV 2011-09-23 05:29:38 +00:00 committed by bugmaster
parent b299a91c4d
commit 7ba3b47cf9
1 changed files with 97 additions and 0 deletions
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97
src/BRepFill/BRepFill_CompatibleWires.cxx
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@ -1442,14 +1442,19 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean polar )
//Consider that all wires have same number of edges (polar==Standard_False)
TopTools_SequenceOfShape PrevSeq;
TopTools_SequenceOfShape PrevEseq;
Standard_Integer theLength = 0;
const TopoDS_Wire& wire = TopoDS::Wire( myWork(ideb) );
for (anExp.Init(wire); anExp.More(); anExp.Next())
{
PrevSeq.Append(anExp.CurrentVertex());
PrevEseq.Append(anExp.Current());
theLength++;
}
Standard_Integer nbs, NbSamples = 0;
if (theLength <= 2)
NbSamples = 4;
for (i = ideb+1; i <= ifin; i++)
{
const TopoDS_Wire& wire = TopoDS::Wire(myWork(i));
@ -1485,6 +1490,27 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean polar )
const TopoDS_Vertex& V = TopoDS::Vertex( SeqVertices(k) );
gp_Pnt P = BRep_Tool::Pnt(V);
SumDist += Pprev.Distance(P);
if (NbSamples > 0)
{
const TopoDS_Edge& PrevEdge = TopoDS::Edge(PrevEseq(n));
const TopoDS_Edge& CurEdge = TopoDS::Edge(SeqEdges(k));
BRepAdaptor_Curve PrevEcurve(PrevEdge);
BRepAdaptor_Curve Ecurve(CurEdge);
Standard_Real SampleOnPrev = (PrevEcurve.LastParameter()-PrevEcurve.FirstParameter())/NbSamples;
Standard_Real SampleOnCur = (Ecurve.LastParameter()-Ecurve.FirstParameter())/NbSamples;
for (nbs = 1; nbs <= NbSamples-1; nbs++)
{
Standard_Real ParOnPrev = (PrevEdge.Orientation() == TopAbs_FORWARD)?
(PrevEcurve.FirstParameter() + nbs*SampleOnPrev) :
(PrevEcurve.FirstParameter() + (NbSamples-nbs)*SampleOnPrev);
Standard_Real ParOnCur = (CurEdge.Orientation() == TopAbs_FORWARD)?
(Ecurve.FirstParameter() + nbs*SampleOnCur) :
(Ecurve.FirstParameter() + (NbSamples-nbs)*SampleOnCur);
gp_Pnt PonPrev = PrevEcurve.Value(ParOnPrev);
gp_Pnt PonCur = Ecurve.Value(ParOnCur);
SumDist += PonPrev.Distance(PonCur);
}
}
}
for (k = 1; k < j; k++, n++)
{
@ -1493,6 +1519,27 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean polar )
const TopoDS_Vertex& V = TopoDS::Vertex( SeqVertices(k) );
gp_Pnt P = BRep_Tool::Pnt(V);
SumDist += Pprev.Distance(P);
if (NbSamples > 0)
{
const TopoDS_Edge& PrevEdge = TopoDS::Edge(PrevEseq(n));
const TopoDS_Edge& CurEdge = TopoDS::Edge(SeqEdges(k));
BRepAdaptor_Curve PrevEcurve(PrevEdge);
BRepAdaptor_Curve Ecurve(CurEdge);
Standard_Real SampleOnPrev = (PrevEcurve.LastParameter()-PrevEcurve.FirstParameter())/NbSamples;
Standard_Real SampleOnCur = (Ecurve.LastParameter()-Ecurve.FirstParameter())/NbSamples;
for (nbs = 1; nbs <= NbSamples-1; nbs++)
{
Standard_Real ParOnPrev = (PrevEdge.Orientation() == TopAbs_FORWARD)?
(PrevEcurve.FirstParameter() + nbs*SampleOnPrev) :
(PrevEcurve.FirstParameter() + (NbSamples-nbs)*SampleOnPrev);
Standard_Real ParOnCur = (CurEdge.Orientation() == TopAbs_FORWARD)?
(Ecurve.FirstParameter() + nbs*SampleOnCur) :
(Ecurve.FirstParameter() + (NbSamples-nbs)*SampleOnCur);
gp_Pnt PonPrev = PrevEcurve.Value(ParOnPrev);
gp_Pnt PonCur = Ecurve.Value(ParOnCur);
SumDist += PonPrev.Distance(PonCur);
}
}
}
if (SumDist < MinSumDist)
{
@ -1510,6 +1557,30 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean polar )
const TopoDS_Vertex& V = TopoDS::Vertex( SeqVertices(k) );
gp_Pnt P = BRep_Tool::Pnt(V);
SumDist += Pprev.Distance(P);
if (NbSamples > 0)
{
Standard_Integer k_cur = k-1;
if (k_cur == 0)
k_cur = theLength;
const TopoDS_Edge& PrevEdge = TopoDS::Edge(PrevEseq(n));
const TopoDS_Edge& CurEdge = TopoDS::Edge(SeqEdges(k_cur));
BRepAdaptor_Curve PrevEcurve(PrevEdge);
BRepAdaptor_Curve Ecurve(CurEdge);
Standard_Real SampleOnPrev = (PrevEcurve.LastParameter()-PrevEcurve.FirstParameter())/NbSamples;
Standard_Real SampleOnCur = (Ecurve.LastParameter()-Ecurve.FirstParameter())/NbSamples;
for (nbs = 1; nbs <= NbSamples-1; nbs++)
{
Standard_Real ParOnPrev = (PrevEdge.Orientation() == TopAbs_FORWARD)?
(PrevEcurve.FirstParameter() + nbs*SampleOnPrev) :
(PrevEcurve.FirstParameter() + (NbSamples-nbs)*SampleOnPrev);
Standard_Real ParOnCur = (CurEdge.Orientation() == TopAbs_FORWARD)?
(Ecurve.FirstParameter() + (NbSamples-nbs)*SampleOnCur) :
(Ecurve.FirstParameter() + nbs*SampleOnCur);
gp_Pnt PonPrev = PrevEcurve.Value(ParOnPrev);
gp_Pnt PonCur = Ecurve.Value(ParOnCur);
SumDist += PonPrev.Distance(PonCur);
}
}
}
for (k = theLength; k > j; k--, n++)
{
@ -1518,6 +1589,27 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean polar )
const TopoDS_Vertex& V = TopoDS::Vertex( SeqVertices(k) );
gp_Pnt P = BRep_Tool::Pnt(V);
SumDist += Pprev.Distance(P);
if (NbSamples > 0)
{
const TopoDS_Edge& PrevEdge = TopoDS::Edge(PrevEseq(n));
const TopoDS_Edge& CurEdge = TopoDS::Edge(SeqEdges(k-1));
BRepAdaptor_Curve PrevEcurve(PrevEdge);
BRepAdaptor_Curve Ecurve(CurEdge);
Standard_Real SampleOnPrev = (PrevEcurve.LastParameter()-PrevEcurve.FirstParameter())/NbSamples;
Standard_Real SampleOnCur = (Ecurve.LastParameter()-Ecurve.FirstParameter())/NbSamples;
for (nbs = 1; nbs <= NbSamples-1; nbs++)
{
Standard_Real ParOnPrev = (PrevEdge.Orientation() == TopAbs_FORWARD)?
(PrevEcurve.FirstParameter() + nbs*SampleOnPrev) :
(PrevEcurve.FirstParameter() + (NbSamples-nbs)*SampleOnPrev);
Standard_Real ParOnCur = (CurEdge.Orientation() == TopAbs_FORWARD)?
(Ecurve.FirstParameter() + (NbSamples-nbs)*SampleOnCur) :
(Ecurve.FirstParameter() + nbs*SampleOnCur);
gp_Pnt PonPrev = PrevEcurve.Value(ParOnPrev);
gp_Pnt PonCur = Ecurve.Value(ParOnCur);
SumDist += PonPrev.Distance(PonCur);
}
}
}
if (SumDist < MinSumDist)
{
@ -1528,17 +1620,20 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean polar )
}
PrevSeq.Clear();
PrevEseq.Clear();
if (forward)
{
for (j = jmin; j <= theLength; j++)
{
BB.Add( newwire, TopoDS::Edge(SeqEdges(j)) );
PrevSeq.Append( SeqVertices(j) );
PrevEseq.Append( SeqEdges(j) );
}
for (j = 1; j < jmin; j++)
{
BB.Add( newwire, TopoDS::Edge(SeqEdges(j)) );
PrevSeq.Append( SeqVertices(j) );
PrevEseq.Append( SeqEdges(j) );
}
}
else
@ -1548,12 +1643,14 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean polar )
TopoDS_Shape aLocalShape = SeqEdges(j).Reversed();
BB.Add( newwire, TopoDS::Edge(aLocalShape) );
//PrevSeq.Append( SeqVertices(j) );
PrevEseq.Append( SeqEdges(j).Reversed() );
}
for (j = theLength; j >= jmin; j--)
{
TopoDS_Shape aLocalShape = SeqEdges(j).Reversed();
BB.Add( newwire, TopoDS::Edge(aLocalShape) );
//PrevSeq.Append( SeqVertices(j) );
PrevEseq.Append( SeqEdges(j).Reversed() );
}
for (j = jmin; j >= 1; j--)
PrevSeq.Append( SeqVertices(j) );