int convert_to_ifc(const Handle_Geom_Surface& s, IfcSchema::IfcSurface*& surface, bool advanced) {
if (s->DynamicType() == STANDARD_TYPE(Geom_Plane)) {
Handle_Geom_Plane plane = Handle_Geom_Plane::DownCast(s);
IfcSchema::IfcAxis2Placement3D* place;
/// @todo: Note that the Ax3 is converted to an Ax2 here
if (!convert_to_ifc(plane->Position().Ax2(), place, advanced)) {
return 0;
}
surface = new IfcSchema::IfcPlane(place);
return 1;
}
#ifdef USE_IFC4
else if (s->DynamicType() == STANDARD_TYPE(Geom_CylindricalSurface)) {
Handle_Geom_CylindricalSurface cyl = Handle_Geom_CylindricalSurface::DownCast(s);
IfcSchema::IfcAxis2Placement3D* place;
/// @todo: Note that the Ax3 is converted to an Ax2 here
if (!convert_to_ifc(cyl->Position().Ax2(), place, advanced)) {
return 0;
}
surface = new IfcSchema::IfcCylindricalSurface(place, cyl->Radius());
return 1;
} else if (s->DynamicType() == STANDARD_TYPE(Geom_BSplineSurface)) {
typedef IfcTemplatedEntityListList<IfcSchema::IfcCartesianPoint> points_t;
Handle_Geom_BSplineSurface bspline = Handle_Geom_BSplineSurface::DownCast(s);
points_t::ptr points(new points_t);
TColgp_Array2OfPnt poles(1, bspline->NbUPoles(), 1, bspline->NbVPoles());
bspline->Poles(poles);
for (int i = 1; i <= bspline->NbUPoles(); ++i) {
std::vector<IfcSchema::IfcCartesianPoint*> ps;
ps.reserve(bspline->NbVPoles());
for (int j = 1; j <= bspline->NbVPoles(); ++j) {
IfcSchema::IfcCartesianPoint* p;
if (!convert_to_ifc(poles.Value(i, j), p, advanced)) {
return 0;
}
ps.push_back(p);
}
points->push(ps);
}
IfcSchema::IfcKnotType::IfcKnotType knot_spec_u = opencascade_knotspec_to_ifc(bspline->UKnotDistribution());
IfcSchema::IfcKnotType::IfcKnotType knot_spec_v = opencascade_knotspec_to_ifc(bspline->VKnotDistribution());
if (knot_spec_u != knot_spec_v) {
knot_spec_u = IfcSchema::IfcKnotType::IfcKnotType_UNSPECIFIED;
}
std::vector<int> umults;
std::vector<int> vmults;
std::vector<double> uknots;
std::vector<double> vknots;
std::vector< std::vector<double> > weights;
TColStd_Array1OfInteger bspline_umults(1, bspline->NbUKnots());
TColStd_Array1OfInteger bspline_vmults(1, bspline->NbVKnots());
TColStd_Array1OfReal bspline_uknots(1, bspline->NbUKnots());
TColStd_Array1OfReal bspline_vknots(1, bspline->NbVKnots());
TColStd_Array2OfReal bspline_weights(1, bspline->NbUPoles(), 1, bspline->NbVPoles());
bspline->UMultiplicities(bspline_umults);
bspline->VMultiplicities(bspline_vmults);
bspline->UKnots(bspline_uknots);
bspline->VKnots(bspline_vknots);
bspline->Weights(bspline_weights);
opencascade_array_to_vector(bspline_umults, umults);
opencascade_array_to_vector(bspline_vmults, vmults);
opencascade_array_to_vector(bspline_uknots, uknots);
opencascade_array_to_vector(bspline_vknots, vknots);
opencascade_array_to_vector2(bspline_weights, weights);
bool rational = false;
for (std::vector< std::vector<double> >::const_iterator it = weights.begin(); it != weights.end(); ++it) {
for (std::vector<double>::const_iterator jt = it->begin(); jt != it->end(); ++jt) {
if ((*jt) != 1.) {
rational = true;
break;
}
}
}
if (rational) {
surface = new IfcSchema::IfcRationalBSplineSurfaceWithKnots(
bspline->UDegree(),
bspline->VDegree(),
points,
IfcSchema::IfcBSplineSurfaceForm::IfcBSplineSurfaceForm_UNSPECIFIED,
bspline->IsUClosed(),
bspline->IsVClosed(),
false,
umults,
vmults,
uknots,
vknots,
knot_spec_u,
weights
);
} else {
surface = new IfcSchema::IfcBSplineSurfaceWithKnots(
bspline->UDegree(),
bspline->VDegree(),
points,
IfcSchema::IfcBSplineSurfaceForm::IfcBSplineSurfaceForm_UNSPECIFIED,
bspline->IsUClosed(),
bspline->IsVClosed(),
false,
umults,
vmults,
uknots,
vknots,
knot_spec_u
);
}
return 1;
}
#endif
return 0;
}
