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0031242: Scaling with different coefficients along axes produces invalid shape

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GeomConvert_1.cxx:
Creation periodic BSpline surfaces from trimmed periodic surface if trim is boundaries of periodic domain is allowed

BRepTools_NurbsConvertModification.cxx:
Checking domain of 2dCurves if surfaces are periodic is added

Test case tests/bugs/mesh/bug30008_2 is modified according to current behavior

Test case tests/bugs/modalg_7/bug31242 is added
This commit is contained in:
ifv
2019-12-18 13:53:11 +03:00
parent 9504a30d15
commit bdd09cfaf4
4 changed files with 38 additions and 6 deletions
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15
src/BRepTools/BRepTools_NurbsConvertModification.cxx
View File

@@ -482,6 +482,8 @@ Standard_Boolean BRepTools_NurbsConvertModification::NewCurve2d
}
return Standard_True;
}
//
GeomAdaptor_Surface GAS(S,Uinf-u,Usup+u,Vinf-v,Vsup+v);
Handle(GeomAdaptor_HSurface) GAHS = new GeomAdaptor_HSurface(GAS);
@@ -490,6 +492,19 @@ Standard_Boolean BRepTools_NurbsConvertModification::NewCurve2d
if(ProjOnCurve.IsDone()) {
Curve2d = ProjOnCurve.BSpline();
if (S->IsUPeriodic() || S->IsVPeriodic())
{
//Surface is periodic, checking curve2d domain
//Old domain
gp_Pnt2d aPf = C2d->Value(f2d);
//New domain
gp_Pnt2d aNewPf = Curve2d->Value(f2d);
gp_Vec2d aT(aNewPf, aPf);
if (aT.SquareMagnitude() > Precision::SquarePConfusion())
{
Curve2d = Handle(Geom2d_Curve)::DownCast(Curve2d->Translated(aT));
}
}
Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
if(newTol > Tol)
{

14
src/GeomConvert/GeomConvert_1.cxx
View File

@@ -329,6 +329,7 @@ Handle(Geom_BSplineSurface) GeomConvert::SplitBSplineSurface
Handle(Geom_BSplineSurface) GeomConvert::SurfaceToBSplineSurface
(const Handle(Geom_Surface)& Sr)
{
Standard_Real U1, U2, V1, V2;
Sr->Bounds (U1, U2, V1, V2);
Standard_Real UFirst = Min (U1, U2);
@@ -380,7 +381,10 @@ Handle(Geom_BSplineSurface) GeomConvert::SurfaceToBSplineSurface
VFirst, VLast);
return SurfaceToBSplineSurface(aStrim);
}
//
//For cylinders, cones, spheres, toruses
const Standard_Boolean isUClosed = Abs((ULast - UFirst) - 2. * M_PI) <= Precision::PConfusion();
//
if (Surf->IsKind(STANDARD_TYPE(Geom_Plane))) {
TColgp_Array2OfPnt Poles (1, 2, 1, 2);
Poles (1, 1) = Strim->Value (U1, V1);
@@ -409,7 +413,7 @@ Handle(Geom_BSplineSurface) GeomConvert::SurfaceToBSplineSurface
Handle(Geom_CylindricalSurface)::DownCast(Surf);
gp_Cylinder Cyl = TheElSurf->Cylinder();
if (Strim->IsUClosed()) {
if (isUClosed) {
Convert_CylinderToBSplineSurface Convert (Cyl, VFirst, VLast);
TheSurface = BSplineSurfaceBuilder (Convert);
}
@@ -425,7 +429,7 @@ Handle(Geom_BSplineSurface) GeomConvert::SurfaceToBSplineSurface
Handle(Geom_ConicalSurface) TheElSurf =
Handle(Geom_ConicalSurface)::DownCast(Surf);
gp_Cone Co = TheElSurf->Cone();
if (Strim->IsUClosed()) {
if (isUClosed) {
Convert_ConeToBSplineSurface Convert (Co, VFirst, VLast);
TheSurface = BSplineSurfaceBuilder (Convert);
}
@@ -442,7 +446,7 @@ Handle(Geom_BSplineSurface) GeomConvert::SurfaceToBSplineSurface
Handle(Geom_SphericalSurface)::DownCast(Surf);
gp_Sphere Sph = TheElSurf->Sphere();
//OCC217
if (Strim->IsUClosed()) {
if (isUClosed) {
//if (Strim->IsVClosed()) {
//Convert_SphereToBSplineSurface Convert (Sph, UFirst, ULast);
Convert_SphereToBSplineSurface Convert (Sph, VFirst, VLast, Standard_False);
@@ -461,7 +465,7 @@ Handle(Geom_BSplineSurface) GeomConvert::SurfaceToBSplineSurface
Handle(Geom_ToroidalSurface)::DownCast(Surf);
gp_Torus Tr = TheElSurf->Torus();
if (Strim->IsUClosed()) {
if (isUClosed) {
Convert_TorusToBSplineSurface Convert (Tr, VFirst, VLast,
Standard_False);
TheSurface = BSplineSurfaceBuilder (Convert);