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0033170: Modeling Algorithms - Checking for canonical geometry: plane detection problems

Browse Source 
GeomLib_IsPlanarSurface.cxx - using poles for checking BSpline, Bezier curves and surface changed
                              on checking by curve, surface points.

BRepOffset_MakeOffset.cxx - set normal of plane surface according to normal of initial face surface

tests/cr/bugs/bug33170 - new test case added
This commit is contained in:
ifv
2022-10-14 12:59:06 +03:00
committed by Vadim Glukhikh
parent d7d89acb39
commit cc164fd7dc
4 changed files with 117 additions and 105 deletions
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47
src/BRepOffset/BRepOffset_MakeOffset.cxx
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@@ -4953,6 +4953,53 @@ Standard_Boolean BRepOffset_MakeOffset::IsPlanar()
if (aPlanarityChecker.IsPlanar())
{
gp_Pln aPln = aPlanarityChecker.Plan();
Standard_Real u1, u2, v1, v2, um, vm;
aSurf->Bounds(u1, u2, v1, v2);
Standard_Boolean isInf1 = Precision::IsInfinite(u1), isInf2 = Precision::IsInfinite(u2);
if (!isInf1 && !isInf2)
{
um = (u1 + u2) / 2.;
}
else if(isInf1 && !isInf2)
{
um = u2 - 1.;
}
else if(!isInf1 && isInf2)
{
um = u1 + 1.;
}
else //isInf1 && isInf2
{
um = 0.;
}
isInf1 = Precision::IsInfinite(v1), isInf2 = Precision::IsInfinite(v2);
if (!isInf1 && !isInf2)
{
vm = (v1 + v2) / 2.;
}
else if (isInf1 && !isInf2)
{
vm = v2 - 1.;
}
else if(!isInf1 && isInf2)
{
vm = v1 + 1.;
}
else //isInf1 && isInf2
{
vm = 0.;
}
gp_Pnt aP;
gp_Vec aD1, aD2;
aBAS.D1(um, vm, aP, aD1, aD2);
gp_Vec aNorm = aD1.Crossed(aD2);
gp_Dir aPlnNorm = aPln.Position().Direction();
if (aNorm.Dot(aPlnNorm) < 0.)
{
aPlnNorm.Reverse();
gp_Ax1 anAx(aPln.Position().Location(), aPlnNorm);
aPln.SetAxis(anAx);
}
Handle(Geom_Plane) aPlane = new Geom_Plane(aPln);
TopoDS_Face aPlanarFace;
aBB.MakeFace(aPlanarFace, aPlane, aTolForFace);