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Parameter transformation

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This commit is contained in:
wmayer 2013-11-14 11:27:07 +01:00
parent b3738a2fce
commit babcf2f027
2 changed files with 27 additions and 32 deletions
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25
src/Mod/Part/App/TopoShapeEdgePy.xml
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@ -14,14 +14,19 @@
<Author Licence="LGPL" Name="Juergen Riegel" EMail="Juergen.Riegel@web.de" />
<UserDocu>TopoShapeEdge is the OpenCasCade topological edge wrapper</UserDocu>
</Documentation>
<Methode Name="tangentAt">
<Methode Name="getParameterByLength">
<Documentation>
<UserDocu>float = getParameterByLength(float) - Return parameter [First,Last]. Input value must be of [0|Length]</UserDocu>
</Documentation>
</Methode>
<Methode Name="tangentAt">
<Documentation>
<UserDocu>Vector = tangentAt(pos) - Get the tangent at the given parameter [0|Length] if defined</UserDocu>
<UserDocu>Vector = tangentAt(pos) - Get the tangent at the given parameter [First|Last] if defined</UserDocu>
</Documentation>
</Methode>
<Methode Name="valueAt">
<Documentation>
<UserDocu>Vector = valueAt(pos) - Get the point at the given parameter [0|Length] if defined</UserDocu>
<UserDocu>Vector = valueAt(pos) - Get the point at the given parameter [First|Last] if defined</UserDocu>
</Documentation>
</Methode>
<Methode Name="parameterAt">
@ -31,32 +36,32 @@
</Methode>
<Methode Name="normalAt">
<Documentation>
<UserDocu>Vector = normalAt(pos) - Get the normal vector at the given parameter [0|Length] if defined</UserDocu>
<UserDocu>Vector = normalAt(pos) - Get the normal vector at the given parameter [First|Last] if defined</UserDocu>
</Documentation>
</Methode>
<Methode Name="derivative1At">
<Documentation>
<UserDocu>Vector = d1At(pos) - Get the first derivative at the given parameter [0|Length] if defined</UserDocu>
<UserDocu>Vector = d1At(pos) - Get the first derivative at the given parameter [First|Last] if defined</UserDocu>
</Documentation>
</Methode>
<Methode Name="derivative2At">
<Documentation>
<UserDocu>Vector = d2At(pos) - Get the second derivative at the given parameter [0|Length] if defined</UserDocu>
<UserDocu>Vector = d2At(pos) - Get the second derivative at the given parameter [First|Last] if defined</UserDocu>
</Documentation>
</Methode>
<Methode Name="derivative3At">
<Documentation>
<UserDocu>Vector = d3At(pos) - Get the third derivative at the given parameter [0|Length] if defined</UserDocu>
<UserDocu>Vector = d3At(pos) - Get the third derivative at the given parameter [First|Last] if defined</UserDocu>
</Documentation>
</Methode>
<Methode Name="curvatureAt">
<Documentation>
<UserDocu>Float = curvatureAt(pos) - Get the curvature at the given parameter [0|Length] if defined</UserDocu>
<UserDocu>Float = curvatureAt(pos) - Get the curvature at the given parameter [First|Last] if defined</UserDocu>
</Documentation>
</Methode>
<Methode Name="centerOfCurvatureAt">
<Documentation>
<UserDocu>Vector = centerOfCurvatureAt(float pos) - Get the center of curvature at the given parameter [0|Length] if defined</UserDocu>
<UserDocu>Vector = centerOfCurvatureAt(float pos) - Get the center of curvature at the given parameter [First|Last] if defined</UserDocu>
</Documentation>
</Methode>
<Methode Name="setTolerance">
@ -132,8 +137,6 @@ absolute Cartesian coordinate system.</UserDocu>
<Parameter Name="Degenerated" Type="Boolean"/>
</Attribute>
<ClassDeclarations>
private:
double getNormalizedParameter(double) const;
</ClassDeclarations>
</PythonExport>
</GenerateModel>

34
src/Mod/Part/App/TopoShapeEdgePyImp.cpp
View File

@ -166,23 +166,31 @@ int TopoShapeEdgePy::PyInit(PyObject* args, PyObject* /*kwd*/)
// ====== Methods ======================================================================
double TopoShapeEdgePy::getNormalizedParameter(double u) const
PyObject* TopoShapeEdgePy::getParameterByLength(PyObject *args)
{
#if 0
double u;
if (!PyArg_ParseTuple(args, "d",&u))
return 0;
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
// normalizing parameter space to length
// transform value of [0,Length] to [First,Last]
double first = BRepLProp_CurveTool::FirstParameter(adapt);
double last = BRepLProp_CurveTool::LastParameter(adapt);
if (!Precision::IsInfinite(first) && !Precision::IsInfinite(last)) {
double length = GCPnts_AbscissaPoint::Length(adapt);
if (u < 0 || u > length) {
PyErr_SetString(PyExc_ValueError, "value out of range");
return 0;
}
double stretch = (last - first) / length;
u = first + u*stretch;
}
#endif
return u;
return PyFloat_FromDouble(u);
}
PyObject* TopoShapeEdgePy::valueAt(PyObject *args)
@ -194,8 +202,6 @@ PyObject* TopoShapeEdgePy::valueAt(PyObject *args)
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
u = getNormalizedParameter(u);
// Check now the orientation of the edge to make
// sure that we get the right wanted point!
BRepLProp_CLProps prop(adapt,u,0,Precision::Confusion());
@ -241,8 +247,6 @@ PyObject* TopoShapeEdgePy::tangentAt(PyObject *args)
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
u = getNormalizedParameter(u);
BRepLProp_CLProps prop(adapt,u,2,Precision::Confusion());
if (prop.IsTangentDefined()) {
gp_Dir dir;
@ -264,8 +268,6 @@ PyObject* TopoShapeEdgePy::normalAt(PyObject *args)
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
u = getNormalizedParameter(u);
try {
BRepLProp_CLProps prop(adapt,u,2,Precision::Confusion());
gp_Dir V ;
@ -288,8 +290,6 @@ PyObject* TopoShapeEdgePy::curvatureAt(PyObject *args)
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
u = getNormalizedParameter(u);
try {
BRepLProp_CLProps prop(adapt,u,2,Precision::Confusion());
double C = prop.Curvature();
@ -311,8 +311,6 @@ PyObject* TopoShapeEdgePy::centerOfCurvatureAt(PyObject *args)
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
u = getNormalizedParameter(u);
try {
BRepLProp_CLProps prop(adapt,u,2,Precision::Confusion());
gp_Pnt V ;
@ -335,8 +333,6 @@ PyObject* TopoShapeEdgePy::derivative1At(PyObject *args)
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
u = getNormalizedParameter(u);
try {
BRepLProp_CLProps prop(adapt,u,1,Precision::Confusion());
const gp_Vec& V = prop.D1();
@ -358,8 +354,6 @@ PyObject* TopoShapeEdgePy::derivative2At(PyObject *args)
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
u = getNormalizedParameter(u);
try {
BRepLProp_CLProps prop(adapt,u,2,Precision::Confusion());
const gp_Vec& V = prop.D2();
@ -381,8 +375,6 @@ PyObject* TopoShapeEdgePy::derivative3At(PyObject *args)
const TopoDS_Edge& e = TopoDS::Edge(getTopoShapePtr()->_Shape);
BRepAdaptor_Curve adapt(e);
u = getNormalizedParameter(u);
try {
BRepLProp_CLProps prop(adapt,u,3,Precision::Confusion());
const gp_Vec& V = prop.D3();