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0030560: Modeling Algorithms - Improvement of the method BRepTools::DetectClosedness

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1. Rewrite the method BRepTools::DetectClosedness.
2. Correct the method BRepOffset_Tool::EnLargeFace to process properly non-periodic but closed faces.
This commit is contained in:
jgv
2019-03-14 12:38:09 +03:00
committed by apn
parent 31fe1f8ec4
commit 85c103d277
4 changed files with 43 additions and 33 deletions
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43
src/BRepTools/BRepTools.cxx
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@@ -67,25 +67,6 @@
#include <errno.h>
//=======================================================================
//function : IsPCurveUiso
//purpose :
//=======================================================================
static Standard_Boolean IsPCurveUiso(const Handle(Geom2d_Curve)& thePCurve,
Standard_Real theFirstPar,
Standard_Real theLastPar)
{
gp_Pnt2d FirstP2d = thePCurve->Value(theFirstPar);
gp_Pnt2d LastP2d = thePCurve->Value(theLastPar);
Standard_Real DeltaU = Abs(FirstP2d.X() - LastP2d.X());
Standard_Real DeltaV = Abs(FirstP2d.Y() - LastP2d.Y());
return (DeltaU < DeltaV);
}
//=======================================================================
//function : UVBounds
//purpose :
@@ -977,28 +958,24 @@ void BRepTools::DetectClosedness(const TopoDS_Face& theFace,
{
theUclosed = theVclosed = Standard_False;
BRepAdaptor_Surface BAsurf(theFace, Standard_False);
Standard_Boolean IsSurfUclosed = BAsurf.IsUClosed();
Standard_Boolean IsSurfVclosed = BAsurf.IsVClosed();
if (!IsSurfUclosed && !IsSurfVclosed)
return;
TopExp_Explorer Explo(theFace, TopAbs_EDGE);
for (; Explo.More(); Explo.Next())
{
const TopoDS_Edge& anEdge = TopoDS::Edge(Explo.Current());
if (BRepTools::IsReallyClosed(anEdge, theFace))
if (BRep_Tool::IsClosed(anEdge, theFace) &&
BRepTools::IsReallyClosed(anEdge, theFace))
{
Standard_Real fpar, lpar;
Handle(Geom2d_Curve) aPCurve = BRep_Tool::CurveOnSurface(anEdge, theFace, fpar, lpar);
Standard_Boolean IsUiso = IsPCurveUiso(aPCurve, fpar, lpar);
if (IsSurfUclosed && IsUiso)
Handle(Geom2d_Curve) PCurve1 = BRep_Tool::CurveOnSurface(anEdge, theFace, fpar, lpar);
Handle(Geom2d_Curve) PCurve2 = BRep_Tool::CurveOnSurface(TopoDS::Edge(anEdge.Reversed()),
theFace, fpar, lpar);
gp_Pnt2d Point1 = PCurve1->Value(fpar);
gp_Pnt2d Point2 = PCurve2->Value(fpar);
Standard_Boolean IsUiso = (Abs(Point1.X() - Point2.X()) > Abs(Point1.Y() - Point2.Y()));
if (IsUiso)
theUclosed = Standard_True;
if (IsSurfVclosed && !IsUiso)
else
theVclosed = Standard_True;
if (theUclosed && theVclosed)
break;
}
}
}