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0000358: BSpline curves not closing correctly

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This commit is contained in:
wmayer 2013-10-24 16:18:03 +02:00
parent f5e12c74ac
commit f6c776e577
1 changed files with 63 additions and 22 deletions
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53
src/Mod/Part/App/BSplineCurvePyImp.cpp
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@ -689,8 +689,16 @@ Py::List BSplineCurvePy::getKnotSequence(void) const
Handle_Geom_BSplineCurve curve = Handle_Geom_BSplineCurve::DownCast
(getGeometryPtr()->handle());
Standard_Integer m = 0;
if (curve->IsPeriodic()) {
// knots=poles+2*degree-mult(1)+2
m = curve->NbPoles() + 2*curve->Degree() - curve->Multiplicity(1) + 2;
}
else {
// knots=poles+degree+1
for (int i=1; i<= curve->NbKnots(); i++)
m += curve->Multiplicity(i);
}
TColStd_Array1OfReal k(1,m);
curve->KnotSequence(k);
Py::List list;
@ -736,9 +744,9 @@ PyObject* BSplineCurvePy::interpolate(PyObject *args)
{
PyObject* obj;
double tol3d = Precision::Approximation();
PyObject* closed = Py_False;
PyObject* periodic = Py_False;
PyObject* t1=0; PyObject* t2=0;
if (!PyArg_ParseTuple(args, "O|O!dO!O!",&obj, &PyBool_Type, &closed, &tol3d,
if (!PyArg_ParseTuple(args, "O|O!dO!O!",&obj, &PyBool_Type, &periodic, &tol3d,
&Base::VectorPy::Type, &t1, &Base::VectorPy::Type, &t2))
return 0;
try {
@ -755,7 +763,7 @@ PyObject* BSplineCurvePy::interpolate(PyObject *args)
Standard_Failure::Raise("not enough points given");
}
GeomAPI_Interpolate aBSplineInterpolation(interpolationPoints, PyObject_IsTrue(closed), tol3d);
GeomAPI_Interpolate aBSplineInterpolation(interpolationPoints, PyObject_IsTrue(periodic), tol3d);
if (t1 && t2) {
Base::Vector3d v1 = Py::Vector(t1,false).toVector();
Base::Vector3d v2 = Py::Vector(t1,false).toVector();
@ -786,8 +794,9 @@ PyObject* BSplineCurvePy::buildFromPoles(PyObject *args)
{
PyObject* obj;
int degree = 3;
PyObject* closed = Py_False;
if (!PyArg_ParseTuple(args, "O|O!i",&obj, &PyBool_Type, &closed, &degree))
PyObject* periodic = Py_False;
PyObject* interpolate = Py_False;
if (!PyArg_ParseTuple(args, "O|O!iO!",&obj, &PyBool_Type, &periodic, &degree, &PyBool_Type, interpolate))
return 0;
try {
Py::Sequence list(obj);
@ -802,6 +811,37 @@ PyObject* BSplineCurvePy::buildFromPoles(PyObject *args)
if (poles.Length() <= degree)
degree = poles.Length()-1;
if (PyObject_IsTrue(periodic)) {
int mult;
int len;
if (PyObject_IsTrue(interpolate)) {
mult = degree;
len = poles.Length() - mult + 2;
}
else {
mult = 1;
len = poles.Length() + 1;
}
TColStd_Array1OfReal knots(1, len);
TColStd_Array1OfInteger mults(1, len);
for (int i=1; i<=knots.Length(); i++){
knots.SetValue(i,(double)(i-1)/(knots.Length()-1));
mults.SetValue(i,1);
}
mults.SetValue(1, mult);
mults.SetValue(knots.Length(), mult);
Handle_Geom_BSplineCurve spline = new Geom_BSplineCurve(poles, knots, mults, degree, Standard_True);
if (!spline.IsNull()) {
this->getGeomBSplineCurvePtr()->setHandle(spline);
Py_Return;
}
else {
Standard_Failure::Raise("failed to create spline");
return 0; // goes to the catch block
}
}
else {
TColStd_Array1OfReal knots(1, poles.Length()+degree+1-2*(degree));
TColStd_Array1OfInteger mults(1, poles.Length()+degree+1-2*(degree));
for (int i=1; i<=knots.Length(); i++){
@ -811,7 +851,7 @@ PyObject* BSplineCurvePy::buildFromPoles(PyObject *args)
mults.SetValue(1, degree+1);
mults.SetValue(knots.Length(), degree+1);
Handle_Geom_BSplineCurve spline = new Geom_BSplineCurve(poles, knots, mults, degree, PyObject_IsTrue(closed));
Handle_Geom_BSplineCurve spline = new Geom_BSplineCurve(poles, knots, mults, degree, Standard_False);
if (!spline.IsNull()) {
this->getGeomBSplineCurvePtr()->setHandle(spline);
Py_Return;
@ -821,6 +861,7 @@ PyObject* BSplineCurvePy::buildFromPoles(PyObject *args)
return 0; // goes to the catch block
}
}
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
PyErr_SetString(PyExc_Exception, e->GetMessageString());