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// Copyright: Matra-Datavision 1995
// File: Select3D_SensitivePoint.cxx
// Created: Fri Mar 10 13:41:23 1995
// Author: Mister rmi
// <rmi>
#include <Select3D_SensitivePoint.ixx>
#include <Select3D_Projector.hxx>
#include <Bnd_Box2d.hxx>
#include <ElCLib.hxx>
#include <CSLib_Class2d.hxx>
//==================================================
// Function:
// Purpose :
//==================================================
Select3D_SensitivePoint
::Select3D_SensitivePoint(const Handle(SelectBasics_EntityOwner)& anOwner,
const gp_Pnt& aPoint):
Select3D_SensitiveEntity(anOwner)
{
SetSensitivityFactor(4.);
mypoint = aPoint;
}
//==================================================
// Function:
// Purpose :
//==================================================
void Select3D_SensitivePoint
::Project (const Handle(Select3D_Projector)& aProj)
{
Select3D_SensitiveEntity::Project(aProj); // to set the field last proj...
gp_Pnt2d aPoint2d;
if(!HasLocation())
aProj->Project(mypoint, aPoint2d);
else{
gp_Pnt aP(mypoint.x, mypoint.y, mypoint.z);
aProj->Project(aP.Transformed(Location().Transformation()), aPoint2d);
}
myprojpt = aPoint2d;
}
//==================================================
// Function:
// Purpose :
//==================================================
void Select3D_SensitivePoint
::Areas(SelectBasics_ListOfBox2d& boxes)
{
Bnd_Box2d abox;
abox.Set(myprojpt);
boxes.Append(abox);
}
//==================================================
// Function:
// Purpose :
//==================================================
Standard_Boolean Select3D_SensitivePoint
::Matches(const Standard_Real X,
const Standard_Real Y,
const Standard_Real aTol,
Standard_Real& DMin)
{
DMin = gp_Pnt2d(X,Y).Distance(myprojpt);
if(DMin<=aTol*SensitivityFactor())
{
// compute and validate the depth (::Depth()) along the eyeline
return Select3D_SensitiveEntity::Matches(X,Y,aTol,DMin);
}
return Standard_False;
}
Standard_Boolean Select3D_SensitivePoint::
Matches (const Standard_Real XMin,
const Standard_Real YMin,
const Standard_Real XMax,
const Standard_Real YMax,
const Standard_Real aTol)
{
Bnd_Box2d B;
B.Update(Min(XMin,XMax),Min(YMin,YMax),Max(XMin,XMax),Max(YMin,YMax));
B.Enlarge(aTol);
return !B.IsOut(myprojpt);
}
//=======================================================================
//function : Matches
//purpose :
//=======================================================================
Standard_Boolean Select3D_SensitivePoint::
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);
Standard_Integer RES = aClassifier2d.SiDans(myprojpt);
if(RES==1) return Standard_True;
return Standard_False;
}
//=======================================================================
//function : Point
//purpose :
//=======================================================================
gp_Pnt Select3D_SensitivePoint::Point() const
{return mypoint;}
//=======================================================================
//function : GetConnected
//purpose :
//=======================================================================
Handle(Select3D_SensitiveEntity) Select3D_SensitivePoint::GetConnected(const TopLoc_Location& aLoc)
{
Handle(Select3D_SensitivePoint) NiouEnt = new Select3D_SensitivePoint(myOwnerId,mypoint);
if(HasLocation()) NiouEnt->SetLocation(Location());
NiouEnt->UpdateLocation(aLoc);
return NiouEnt;
}
//=======================================================================
//function : Dump
//purpose :
//=======================================================================
void Select3D_SensitivePoint::Dump(Standard_OStream& S,const Standard_Boolean FullDump) const
{
S<<"\tSensitivePoint 3D :";
if(HasLocation())
S<<"\t\tExisting Location"<<endl;
S<<"\t\t P3d [ "<<mypoint.x<<" , "<<mypoint.y<<" , "<<mypoint.z<<" ]"<<endl;
S<<"\t\t P2d [ "<<myprojpt.x<<" , "<<myprojpt.y<<" ]"<<endl;
}
//=======================================================================
//function : ComputeDepth
//purpose :
//=======================================================================
Standard_Real Select3D_SensitivePoint::ComputeDepth(const gp_Lin& EyeLine) const
{
return ElCLib::Parameter(EyeLine,mypoint);
}
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