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0031840: Modeling Algorithms - CRUnionface change seam edge from Line to BSplineCurve

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ShapeBuild_Edge::BuildCurve3d(const TopoDS_Edge& edge) was modified to create Geom_Line instead of Geom_BSplineCurve for cylindical and conical surfaces,
if the PCurve on these surfaces is line and coincides with the V-direction.
This commit is contained in:
aavtamon
2020-12-22 10:38:37 +03:00
parent 894133a5ad
commit 552473f54d
1 changed files with 50 additions and 1 deletions
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51
src/ShapeBuild/ShapeBuild_Edge.cxx
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@@ -35,9 +35,13 @@
#include <Geom2dConvert.hxx>
#include <Geom2dConvert_ApproxCurve.hxx>
#include <Geom_Curve.hxx>
#include <Geom_Line.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <Geom_ConicalSurface.hxx>
#include <Geom_CylindricalSurface.hxx>
#include <Geom_RectangularTrimmedSurface.hxx>
#include <Geom_OffsetCurve.hxx>
#include <Geom_Surface.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <GeomAPI.hxx>
#include <gp_GTrsf2d.hxx>
#include <gp_Lin2d.hxx>
@@ -600,6 +604,51 @@ Standard_Boolean ShapeBuild_Edge::BuildCurve3d (const TopoDS_Edge& edge) const
{
try {
OCC_CATCH_SIGNALS
//The next piece of code has been added in order to fix bug31840
//Trying to create a straight line instead of bspline-curve if it's possible
//Start of the new code
Handle(Geom2d_Curve) anEdgeCurve;
Handle(Geom_Surface) anEdgeSurface;
TopLoc_Location aLocation;
Standard_Real aFirst, aLast;
Handle(Geom_Curve) aCurve = BRep_Tool::Curve(edge, aLocation, aFirst, aLast);
if (!aCurve.IsNull())
return Standard_True;
BRep_Tool::CurveOnSurface(edge, anEdgeCurve, anEdgeSurface, aLocation, aFirst, aLast);
if (anEdgeCurve.IsNull() || anEdgeSurface.IsNull())
return Standard_False;
while (anEdgeCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve))) {
Handle(Geom2d_TrimmedCurve) aTrCurve = Handle(Geom2d_TrimmedCurve)::DownCast(anEdgeCurve);
anEdgeCurve = aTrCurve->BasisCurve();
}
while (anEdgeSurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
Handle(Geom_RectangularTrimmedSurface) aTrSurf = Handle(Geom_RectangularTrimmedSurface)::DownCast(anEdgeSurface);
anEdgeSurface = aTrSurf->BasisSurface();
}
Handle(Geom2d_Line) aL = Handle(Geom2d_Line)::DownCast(anEdgeCurve);
if ((anEdgeSurface->IsKind(STANDARD_TYPE(Geom_ConicalSurface)) ||
anEdgeSurface->IsKind(STANDARD_TYPE(Geom_CylindricalSurface))) &&
!aL.IsNull()) {
gp_Pnt2d p1 = anEdgeCurve->Value(aFirst);
gp_Pnt2d p2 = anEdgeCurve->Value(aLast);
gp_Dir2d aDir = aL->Position().Direction();
if (aDir.IsParallel(gp_Dir2d(0, 1), Precision::Angular())) {
gp_Pnt P1 = anEdgeSurface->Value(p1.X(), p1.Y());
gp_Pnt P2 = anEdgeSurface->Value(p2.X(), p2.Y());
gp_Vec aVec(P1, P2);
Handle(Geom_Line) aLine = new Geom_Line(gp_Ax1(P1, aVec));
gp_Pnt P0 = aLine->Value(-aFirst);
aLine->Translate(P1, P0);
Handle(Geom_TrimmedCurve) aNewCurve = new Geom_TrimmedCurve(aLine, aFirst, aLast);
BRep_Builder aBuilder;
Standard_Real aTol = BRep_Tool::Tolerance(edge);
aBuilder.UpdateEdge(edge, aNewCurve, aLocation, aTol);
return Standard_True;
}
}
//End of the new code
//#48 rln 10.12.98 S4054 UKI60107-5 entity 365
//C0 surface (but curve 3d is required as C1) and tolerance is 1e-07
//lets use maximum of tolerance and default parameter 1.e-5