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Add Part.distToShape()

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WandererFan 2014-02-14 13:08:52 -05:00 committed by wmayer
parent 6d1d55dc15
commit dcc4839968
2 changed files with 141 additions and 0 deletions
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7
src/Mod/Part/App/TopoShapePy.xml
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@ -367,6 +367,13 @@ Boolean indicates if the point lying directly on a face is considered to be insi
<UserDocu>Removes redundant edges from the B-REP model</UserDocu>
</Documentation>
</Methode>
<Methode Name="distToShape" Const="true">
<Documentation>
<UserDocu>Find the minimum distance to another shape.
distToShape(Shape s): Returns a list of minimum distance and solution point pairs - [mindist, (pointonthis,supporttype,
pointons,supporttype),(...),...]</UserDocu>
</Documentation>
</Methode>
<Methode Name="getElement" Const="true">
<Documentation>
<UserDocu>Returns a SubElement</UserDocu>

134
src/Mod/Part/App/TopoShapePyImp.cpp
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@ -34,6 +34,8 @@
# include <BRepOffsetAPI_MakePipeShell.hxx>
# include <BRepProj_Projection.hxx>
# include <BRepTools.hxx>
# include <BRepExtrema_DistShapeShape.hxx>
# include <BRepExtrema_SupportType.hxx>
# include <gp_Ax1.hxx>
# include <gp_Ax2.hxx>
# include <gp_Dir.hxx>
@ -1452,6 +1454,138 @@ PyObject* TopoShapePy::getElement(PyObject *args)
return 0;
}
PyObject* _getSupportIndex(char* suppStr, TopoShape* ts, TopoDS_Shape suppShape) {
std::stringstream ss;
TopoDS_Shape subShape;
unsigned long nSubShapes = ts->countSubShapes(suppStr);
PyObject* pSupportIndex = PyInt_FromLong(-1);
for (unsigned long j=1; j<=nSubShapes; j++){
ss.str("");
ss << suppStr << j;
subShape = ts->getSubShape(ss.str().c_str());
if (subShape.IsEqual(suppShape)) {
pSupportIndex = PyInt_FromLong(j-1);
break;
}
}
return pSupportIndex;
}
PyObject* TopoShapePy::distToShape(PyObject *args)
{
PyObject* ps2;
PyObject *soln,*pPt1,*pPt2,*pSuppType1,*pSuppType2,
*pSupportIndex1, *pSupportIndex2, *pParm1, *pParm2;
gp_Pnt P1,P2;
BRepExtrema_SupportType supportType1,supportType2;
TopoDS_Shape suppS1,suppS2;
Standard_Real minDist = -1, t1,t2,u1,v1,u2,v2;
if (!PyArg_ParseTuple(args, "O!",&(TopoShapePy::Type), &ps2))
return 0;
const TopoDS_Shape& s1 = getTopoShapePtr()->_Shape;
TopoShape* ts1 = getTopoShapePtr();
const TopoDS_Shape& s2 = static_cast<Part::TopoShapePy*>(ps2)->getTopoShapePtr()->_Shape;
TopoShape* ts2 = static_cast<Part::TopoShapePy*>(ps2)->getTopoShapePtr();
if (s2.IsNull()) {
PyErr_SetString(PyExc_TypeError, "distToShape: Shape parameter is invalid");
return 0;
}
BRepExtrema_DistShapeShape extss(s1, s2);
if (!extss.IsDone()) {
PyErr_SetString(PyExc_TypeError, "BRepExtrema_DistShapeShape failed");
return 0;
}
PyObject* solutions = PyList_New(0);
unsigned long count = extss.NbSolution();
if (count != 0) {
minDist = extss.Value();
//extss.Dump(std::cout);
for (int i=1; i<= count; i++) {
P1 = extss.PointOnShape1(i);
pPt1 = new Base::VectorPy(new Base::Vector3d(P1.X(),P1.Y(),P1.Z()));
supportType1 = extss.SupportTypeShape1(i);
suppS1 = extss.SupportOnShape1(i);
switch (supportType1) {
case BRepExtrema_IsVertex:
pSuppType1 = PyString_FromString("Vertex");
pSupportIndex1 = _getSupportIndex("Vertex",ts1,suppS1);
pParm1 = Py_None;
break;
case BRepExtrema_IsOnEdge:
pSuppType1 = PyString_FromString("Edge");
pSupportIndex1 = _getSupportIndex("Edge",ts1,suppS1);
extss.ParOnEdgeS1(i,t1);
pParm1 = PyFloat_FromDouble(t1);
break;
case BRepExtrema_IsInFace:
pSuppType1 = PyString_FromString("Face");
pSupportIndex1 = _getSupportIndex("Face",ts1,suppS1);
extss.ParOnFaceS1(i,u1,v1);
pParm1 = PyTuple_New(2);
PyTuple_SetItem(pParm1,0,PyFloat_FromDouble(u1));
PyTuple_SetItem(pParm1,1,PyFloat_FromDouble(v1));
break;
default:
Base::Console().Message("distToShape: supportType1 is unknown: %d \n",supportType1);
pSuppType1 = PyString_FromString("Unknown");
pSupportIndex1 = PyInt_FromLong(-1);
pParm1 = Py_None;
}
P2 = extss.PointOnShape2(i);
pPt2 = new Base::VectorPy(new Base::Vector3d(P2.X(),P2.Y(),P2.Z()));
supportType2 = extss.SupportTypeShape2(i);
suppS2 = extss.SupportOnShape2(i);
switch (supportType2) {
case BRepExtrema_IsVertex:
pSuppType2 = PyString_FromString("Vertex");
pSupportIndex2 = _getSupportIndex("Vertex",ts2,suppS2);
pParm2 = Py_None;
break;
case BRepExtrema_IsOnEdge:
pSuppType2 = PyString_FromString("Edge");
pSupportIndex2 = _getSupportIndex("Edge",ts2,suppS2);
extss.ParOnEdgeS2(i,t2);
pParm2 = PyFloat_FromDouble(t2);
break;
case BRepExtrema_IsInFace:
pSuppType2 = PyString_FromString("Face");
pSupportIndex2 = _getSupportIndex("Face",ts2,suppS2);
extss.ParOnFaceS2(i,u2,v2);
pParm2 = PyTuple_New(2);
PyTuple_SetItem(pParm2,0,PyFloat_FromDouble(u2));
PyTuple_SetItem(pParm2,1,PyFloat_FromDouble(v2));
break;
default:
Base::Console().Message("distToShape: supportType2 is unknown: %d \n",supportType1);
pSuppType2 = PyString_FromString("Unknown");
pSupportIndex2 = PyInt_FromLong(-1);
}
soln = PyTuple_New(8);
PyTuple_SetItem(soln,0,pPt1);
PyTuple_SetItem(soln,1,pSuppType1);
PyTuple_SetItem(soln,2,pSupportIndex1);
PyTuple_SetItem(soln,3,pParm1);
PyTuple_SetItem(soln,4,pPt2);
PyTuple_SetItem(soln,5,pSuppType2);
PyTuple_SetItem(soln,6,pSupportIndex2);
PyTuple_SetItem(soln,7,pParm2);
int PyErr = PyList_Append(solutions, soln);
}
}
else {
PyErr_SetString(PyExc_TypeError, "distToShape: No Solutions Found.");
return 0;
}
return Py_BuildValue("dO", minDist, solutions);
}
// End of Methods, Start of Attributes
#if 0 // see ComplexGeoDataPy::Matrix which does the same
Py::Object TopoShapePy::getLocation(void) const
{