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// File: ChFi3d_SearchSing.cxx
// Created: Fri Mar 28 15:37:38 1997
// Author: Philippe MANGIN
// <pmn@sgi29>
#include <ChFi3d_SearchSing.ixx>
#include <gp_Pnt.hxx>
#include <gp_Vec.hxx>
ChFi3d_SearchSing::ChFi3d_SearchSing(const Handle(Geom_Curve)& C1,
const Handle(Geom_Curve)& C2)
{
myC1 = C1;
myC2 = C2;
}
Standard_Boolean ChFi3d_SearchSing::Value(const Standard_Real X,
Standard_Real& F)
{
gp_Pnt P1, P2;
gp_Vec V1, V2;
myC1->D1(X, P1, V1);
myC2->D1(X, P2, V2);
gp_Vec V(P1,P2);
F = V * (V2-V1);
return Standard_True;
}
Standard_Boolean ChFi3d_SearchSing::Derivative(const Standard_Real X,
Standard_Real& D )
{
gp_Pnt P1, P2;
gp_Vec V1, V2, W1, W2;
myC1->D2(X, P1, V1, W1);
myC2->D2(X, P2, V2, W2);
gp_Vec V(P1,P2), VPrim;
VPrim = V2 -V1;
D = VPrim.SquareMagnitude() + (V * (W2-W1));
return Standard_True;
}
Standard_Boolean ChFi3d_SearchSing::Values(const Standard_Real X,
Standard_Real& F,
Standard_Real& D )
{
gp_Pnt P1, P2;
gp_Vec V1, V2, W1, W2;
myC1->D2(X, P1, V1, W1);
myC2->D2(X, P2, V2, W2);
gp_Vec V(P1,P2), VPrim;
VPrim = V2 -V1;
F = V * VPrim;
D = VPrim.SquareMagnitude() + (V * (W2-W1));
return Standard_True;
}
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