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// Copyright: Matra-Datavision 1995
// File: Select3D_SensitiveCurve.cxx
// Created: Mon Mar 13 09:57:58 1995
// Author: Robert COUBLANC
// <rob>
#include <Select3D_SensitiveCurve.ixx>
#include <SelectBasics_BasicTool.hxx>
#include <gp_Lin2d.hxx>
#include <Precision.hxx>
#include <ElCLib.hxx>
#include <CSLib_Class2d.hxx>
//==================================================
// Function:
// Purpose :
//==================================================
Select3D_SensitiveCurve
::Select3D_SensitiveCurve(const Handle(SelectBasics_EntityOwner)& OwnerId,
const Handle(Geom_Curve)& C,
const Standard_Integer NbPoints):
Select3D_SensitivePoly(OwnerId, NbPoints),
mylastseg(0)
{
LoadPoints(C,NbPoints);
}
//==================================================
// Function: Creation
// Purpose :
//==================================================
Select3D_SensitiveCurve
::Select3D_SensitiveCurve(const Handle(SelectBasics_EntityOwner)& OwnerId,
const Handle(TColgp_HArray1OfPnt)& ThePoints):
Select3D_SensitivePoly(OwnerId, ThePoints),
mylastseg(0)
{
}
//==================================================
// Function: Creation
// Purpose :
//==================================================
Select3D_SensitiveCurve
::Select3D_SensitiveCurve(const Handle(SelectBasics_EntityOwner)& OwnerId,
const TColgp_Array1OfPnt& ThePoints):
Select3D_SensitivePoly(OwnerId, ThePoints),
mylastseg(0)
{
}
//==================================================
// Function: Matches
// Purpose :
//==================================================
Standard_Boolean Select3D_SensitiveCurve
::Matches(const Standard_Real X,
const Standard_Real Y,
const Standard_Real aTol,
Standard_Real& DMin)
{
Standard_Integer Rank;
TColgp_Array1OfPnt2d aArrayOf2dPnt(1, mynbpoints);
Points2D(aArrayOf2dPnt);
if (SelectBasics_BasicTool::MatchPolyg2d (aArrayOf2dPnt,
X, Y,
aTol,
DMin,
Rank))
{
mylastseg = Rank;
// compute and validate the depth (::Depth()) along the eyeline
return Select3D_SensitiveEntity::Matches (X, Y, aTol, DMin);
}
return Standard_False;
}
//==================================================
// Function: Matches
// Purpose : know if a box touches the projected polygon
// of the Curve.
//==================================================
Standard_Boolean Select3D_SensitiveCurve::
Matches (const Standard_Real XMin,
const Standard_Real YMin,
const Standard_Real XMax,
const Standard_Real YMax,
const Standard_Real aTol)
{
Bnd_Box2d BoundBox;
BoundBox.Update(XMin-aTol,YMin-aTol,XMax+aTol,YMax+aTol);
for(Standard_Integer j=0; j<mynbpoints; j++)
{
if(BoundBox.IsOut(((Select3D_Pnt2d*)mypolyg2d)[j])) return Standard_False;
}
return Standard_True;
}
//=======================================================================
//function : Matches
//purpose :
//=======================================================================
Standard_Boolean Select3D_SensitiveCurve::
Matches (const TColgp_Array1OfPnt2d& aPoly,
const Bnd_Box2d& aBox,
const Standard_Real aTol)
{
Standard_Real Umin,Vmin,Umax,Vmax;
aBox.Get(Umin,Vmin,Umax,Vmax);
CSLib_Class2d aClassifier2d(aPoly,aTol,aTol,Umin,Vmin,Umax,Vmax);
for(Standard_Integer j=0;j<mynbpoints;j++){
Standard_Integer RES = aClassifier2d.SiDans(((Select3D_Pnt2d*)mypolyg2d)[j]);
if(RES!=1) return Standard_False;
}
return Standard_True;
}
//==================================================
// Function:
// Purpose :
//==================================================
void Select3D_SensitiveCurve
::LoadPoints (const Handle(Geom_Curve)& aCurve,const Standard_Integer NbP)
{
/*this method is private and it used only inside of constructor.
That's why check !NbP==mypolyg3d->Length() was removed*/
Standard_Real Step = (aCurve->LastParameter()- aCurve->FirstParameter())/(NbP-1);
Standard_Real Curparam = aCurve->FirstParameter();
for(Standard_Integer i=0;i<mynbpoints;i++)
{
((Select3D_Pnt*)mypolyg3d)[i] = aCurve->Value(Curparam);
Curparam+=Step;
}
}
//=======================================================================
//function : Dump
//purpose :
//=======================================================================
void Select3D_SensitiveCurve::Dump(Standard_OStream& S,const Standard_Boolean FullDump) const
{
S<<"\tSensitiveCurve 3D :"<<endl;
if(HasLocation())
S<<"\t\tExisting Location"<<endl;
S<<"\t\tNumber Of Points :"<<mynbpoints<<endl;
if(FullDump){
// S<<"\t\t\tOwner:"<<myOwnerId<<endl;
Select3D_SensitiveEntity::DumpBox(S,mybox2d);
}
}
//=======================================================================
//function : ComputeDepth
//purpose :
//=======================================================================
Standard_Real Select3D_SensitiveCurve::ComputeDepth(const gp_Lin& EyeLine) const
{
if(mylastseg==0) return Precision::Infinite(); // non implemente actuellement...
gp_XYZ TheCDG(((Select3D_Pnt*)mypolyg3d)[mylastseg]);
TheCDG+=((Select3D_Pnt*)mypolyg3d)[mylastseg+1];
TheCDG/=2.;
return ElCLib::Parameter(EyeLine,gp_Pnt(TheCDG));
}
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