Handle(Geom_BSplineSurface) Approx_Presentation::CreateBSplineSurface(TColStd_Array2OfReal& aZPoints,
Standard_Real theXStep,
Standard_Real theYStep,
Standard_Integer Count)
{
Standard_Real aX0 = -300, aY0 = -200;
GeomAPI_PointsToBSplineSurface aPTBS;
aPTBS.Init(aZPoints,aX0,theXStep,aY0,theYStep,
DegMin[Count],DegMax[Count],Continuity[Count],Tol[Count]);
Handle(Geom_BSplineSurface) aSurface = aPTBS.Surface();
return aSurface;
}
PyObject* BSplineSurfacePy::approximate(PyObject *args)
{
PyObject* obj;
Standard_Integer degMin=0;
Standard_Integer degMax=0;
Standard_Integer continuity=0;
Standard_Real tol3d = Precision::Approximation();
Standard_Real X0=0;
Standard_Real dX=0;
Standard_Real Y0=0;
Standard_Real dY=0;
int len = PyTuple_GET_SIZE(args);
if (!PyArg_ParseTuple(args, "O!iiid|dddd",&(PyList_Type), &obj, °Min, °Max, &continuity, &tol3d, &X0, &dX, &Y0, &dY))
return 0;
try {
Py::List list(obj);
Standard_Integer lu = list.size();
Py::List col(list.getItem(0));
Standard_Integer lv = col.size();
TColgp_Array2OfPnt interpolationPoints(1, lu, 1, lv);
TColStd_Array2OfReal zPoints(1, lu, 1, lv);
//Base::Console().Message("lu=%d, lv=%d\n", lu, lv);
Standard_Integer index1 = 0;
Standard_Integer index2 = 0;
for (Py::List::iterator it1 = list.begin(); it1 != list.end(); ++it1) {
index1++;
index2=0;
Py::List row(*it1);
for (Py::List::iterator it2 = row.begin(); it2 != row.end(); ++it2) {
index2++;
if(len == 5){
Py::Vector v(*it2);
Base::Vector3d pnt = v.toVector();
gp_Pnt newPoint(pnt.x,pnt.y,pnt.z);
interpolationPoints.SetValue(index1, index2, newPoint);
}
else {
Standard_Real val = PyFloat_AsDouble((*it2).ptr());
zPoints.SetValue(index1, index2, val);
}
}
}
if(continuity<0 || continuity>3){
Standard_Failure::Raise("continuity must be between 0 and 3");
}
GeomAbs_Shape c;
switch(continuity){
case 0:
c = GeomAbs_C0;
case 1:
c = GeomAbs_C1;
case 2:
c = GeomAbs_C2;
case 3:
c = GeomAbs_C3;
}
if (interpolationPoints.RowLength() < 2 || interpolationPoints.ColLength() < 2) {
Standard_Failure::Raise("not enough points given");
}
GeomAPI_PointsToBSplineSurface surInterpolation;
if(len == 5){
surInterpolation.Init(interpolationPoints, degMin, degMax, c, tol3d);
}
else {
surInterpolation.Init(zPoints, X0, dX, Y0, dY, degMin, degMax, c, tol3d);
}
Handle_Geom_BSplineSurface sur(surInterpolation.Surface());
this->getGeomBSplineSurfacePtr()->setHandle(sur);
Py_Return;
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
std::string err = e->GetMessageString();
if (err.empty()) err = e->DynamicType()->Name();
PyErr_SetString(PyExc_Exception, err.c_str());
return 0;
}
}