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// File: GccIter_FunctionTanObl.gxx
// Created: Mon Jan 20 16:35:40 1992
// Author: Remi GILET
// <reg@phobox>
#include <gp_Vec2d.hxx>
#include <gp_Pnt2d.hxx>
GccIter_FunctionTanObl::
GccIter_FunctionTanObl(const TheCurve& C ,
const gp_Dir2d& Dir ) {
TheCurv = C;
TheDirection = Dir;
}
Standard_Boolean GccIter_FunctionTanObl::
Value (const Standard_Real X ,
Standard_Real& Fval ) {
gp_Pnt2d Point;
gp_Vec2d Vect;
TheCurveTool::D1(TheCurv,X,Point,Vect);
Standard_Real NormeD1 = Vect.Magnitude();
Fval = TheDirection.XY().Crossed(Vect.XY())/NormeD1;
return Standard_True;
}
Standard_Boolean GccIter_FunctionTanObl::
Derivative (const Standard_Real X ,
Standard_Real& Deriv ) {
gp_Pnt2d Point;
gp_Vec2d Vec1;
gp_Vec2d Vec2;
TheCurveTool::D2(TheCurv,X,Point,Vec1,Vec2);
Standard_Real NormeD1 = Vec1.Magnitude();
Deriv = TheDirection.XY().Crossed(Vec2.XY())/NormeD1-
Vec1.XY().Dot(Vec2.XY())*TheDirection.XY().Crossed(Vec1.XY())/NormeD1;
return Standard_True;
}
Standard_Boolean GccIter_FunctionTanObl::
Values (const Standard_Real X ,
Standard_Real& Fval ,
Standard_Real& Deriv ) {
gp_Pnt2d Point;
gp_Vec2d Vec1;
gp_Vec2d Vec2;
TheCurveTool::D2(TheCurv,X,Point,Vec1,Vec2);
Standard_Real NormeD1 = Vec1.Magnitude();
Fval = TheDirection.XY().Crossed(Vec1.XY())/NormeD1;
Deriv = TheDirection.XY().Crossed(Vec2.XY())/NormeD1-
Vec1.XY().Dot(Vec2.XY())*TheDirection.XY().Crossed(Vec1.XY())/NormeD1;
return Standard_True;
}
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