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Add method for getting tangent on curve by parameter

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This commit is contained in:
gka 2006-04-24 07:43:11 +00:00
parent 5eaa0b7f1e
commit f5b9e11841
2 changed files with 52 additions and 0 deletions
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49
src/GEOMImpl/GEOMImpl_IBasicOperations.cxx
View File

@ -221,6 +221,55 @@ Handle(GEOM_Object) GEOMImpl_IBasicOperations::MakePointOnCurve
return aPoint;
}
//=============================================================================
/*!
* MakeTangentOnCurve
*/
//=============================================================================
Handle(GEOM_Object) GEOMImpl_IBasicOperations::MakeTangentOnCurve
(const Handle(GEOM_Object)& theCurve, double theParameter)
{
SetErrorCode(KO);
if (theCurve.IsNull()) return NULL;
//Add a new Vector object
Handle(GEOM_Object) aVec = GetEngine()->AddObject(GetDocID(), GEOM_VECTOR);
//Add a new Point function for creation a point relativley another point
Handle(GEOM_Function) aFunction = aVec->AddFunction(GEOMImpl_VectorDriver::GetID(), VECTOR_TANGENT_CURVE_PAR);
//Check if the function is set correctly
if (aFunction->GetDriverGUID() != GEOMImpl_VectorDriver::GetID()) return NULL;
GEOMImpl_IVector aVI (aFunction);
Handle(GEOM_Function) aRefFunction = theCurve->GetLastFunction();
if (aRefFunction.IsNull()) return NULL;
aVI.SetCurve(aRefFunction);
aVI.SetParameter(theParameter);
//Compute the vector value
try {
if (!GetSolver()->ComputeFunction(aFunction)) {
SetErrorCode("Vector driver failed");
return NULL;
}
}
catch (Standard_Failure) {
Handle(Standard_Failure) aFail = Standard_Failure::Caught();
SetErrorCode(aFail->GetMessageString());
return NULL;
}
//Make a Python command
GEOM::TPythonDump(aFunction) << aVec << " = geompy.MakeTangentOnCurve("
<< theCurve << ", " << theParameter << ")";
SetErrorCode(OK);
return aVec;
}
//=============================================================================
/*!

3
src/GEOMImpl/GEOMImpl_IBasicOperations.hxx
View File

@ -47,6 +47,9 @@ class GEOMImpl_IBasicOperations : public GEOM_IOperations {
Standard_EXPORT Handle(GEOM_Object) MakeVectorTwoPnt (Handle(GEOM_Object) thePnt1,
Handle(GEOM_Object) thePnt2);
Standard_EXPORT Handle(GEOM_Object) MakeTangentOnCurve(const Handle(GEOM_Object)& theCurve,
double theParameter);
// Line
Standard_EXPORT Handle(GEOM_Object) MakeLineTwoPnt (Handle(GEOM_Object) thePnt1,
Handle(GEOM_Object) thePnt2);