PyObject* BSplineSurfacePy::reparametrize(PyObject * args)
{
int u,v;
double tol = 0.000001;
if (!PyArg_ParseTuple(args, "ii|d", &u, &v, &tol))
return 0;
// u,v must be at least 2
u = std::max<int>(u, 2);
v = std::max<int>(v, 2);
try {
Handle_Geom_BSplineSurface surf = Handle_Geom_BSplineSurface::DownCast
(getGeometryPtr()->handle());
double maxU = surf->UKnot(surf->NbUKnots()); // 1.0 if normalized surface
double maxV = surf->VKnot(surf->NbVKnots()); // 1.0 if normalized surface
GeomBSplineSurface* geom = new GeomBSplineSurface();
Handle_Geom_BSplineSurface spline = Handle_Geom_BSplineSurface::DownCast
(geom->handle());
for (int i=1; i<u-1; i++) {
double U = i * 1.0 / (u-1.0);
spline->InsertUKnot(U,i,tol,Standard_True);
}
for (int i=1; i<v-1; i++) {
double V = i * 1.0 / (v-1.0);
spline->InsertVKnot(V,i,tol,Standard_True);
}
for (int j=0; j<u; j++) {
double U = j * maxU / (u-1.0);
double newU = j * 1.0 / (u-1.0);
for (int k=0; k<v; k++) {
double V = k * maxV / (v-1.0);
double newV = k * 1.0 / (v-1.0);
// Get UV point and move new surface UV point
gp_Pnt point = surf->Value(U,V);
int ufirst, ulast, vfirst, vlast;
spline->MovePoint(newU, newV, point, j+1, j+1, k+1, k+1, ufirst, ulast, vfirst, vlast);
}
}
return new BSplineSurfacePy(geom);
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
PyErr_SetString(PyExc_Exception, e->GetMessageString());
return 0;
}
}
Py::List BSplineSurfacePy::getUKnotSequence(void) const
{
Handle_Geom_BSplineSurface surf = Handle_Geom_BSplineSurface::DownCast
(getGeometryPtr()->handle());
Standard_Integer m = 0;
for (int i=1; i<= surf->NbUKnots(); i++)
m += surf->UMultiplicity(i);
TColStd_Array1OfReal k(1,m);
surf->UKnotSequence(k);
Py::List list;
for (Standard_Integer i=k.Lower(); i<=k.Upper(); i++) {
list.append(Py::Float(k(i)));
}
return list;
}
PyObject* BSplineSurfacePy::getUKnots(PyObject *args)
{
if (!PyArg_ParseTuple(args, ""))
return 0;
try {
Handle_Geom_BSplineSurface surf = Handle_Geom_BSplineSurface::DownCast
(getGeometryPtr()->handle());
TColStd_Array1OfReal w(1,surf->NbUKnots());
surf->UKnots(w);
Py::List knots;
for (Standard_Integer i=w.Lower(); i<=w.Upper(); i++) {
knots.append(Py::Float(w(i)));
}
return Py::new_reference_to(knots);
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
PyErr_SetString(PyExc_Exception, e->GetMessageString());
return 0;
}
}
Py::Int BSplineSurfacePy::getNbUKnots(void) const
{
Handle_Geom_BSplineSurface surf = Handle_Geom_BSplineSurface::DownCast
(getGeometryPtr()->handle());
return Py::Int(surf->NbUKnots());
}
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;
}
