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// Copyright: Matra-Datavision 1995
// File: Select2D_SensitiveArc.cxx
// Created: Tue May 23 13:22:33 1995
// Author: Robert COUBLANC
// <rob>
#include <Select2D_SensitiveArc.ixx>
#include <Bnd_Box2d.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Vec2d.hxx>
#include <Precision.hxx>
//#include <.hxx>
//#include <.hxx>
//#include <.hxx>
//==================================================
// Function: Constructor
// Purpose :
//==================================================
Select2D_SensitiveArc::
Select2D_SensitiveArc(const Handle(SelectBasics_EntityOwner)& OwnerId,
const gp_Ax2d& OriginAxis,
const Standard_Real Angle,
const Standard_Real Radius,
const Standard_Integer NbPoints):
Select2D_SensitiveEntity(OwnerId),
myradius(Radius),
myax2d( OriginAxis),
myangle(Angle),
mynbpt(NbPoints)
{
if(myangle<=Precision::Confusion()) myangle=2*PI;
}
//=====================================================
// Function : Areas
// Purpose :
//=====================================================
void Select2D_SensitiveArc::
Areas (SelectBasics_ListOfBox2d& boxes)
{
Bnd_Box2d abox;
Standard_Real deteta =myangle/mynbpt;
gp_Pnt2d P1 = myax2d.Location().Translated(gp_Vec2d(myax2d.Direction())*myradius);
abox.Set(P1);
for(Standard_Integer i=1;i<=mynbpt;i++){
abox.Add(P1.Rotated(myax2d.Location(),deteta*i));}
boxes.Append(abox);
}
//=====================================================
// Function : Matches
// Purpose :
//=====================================================
Standard_Boolean Select2D_SensitiveArc::
Matches (const Standard_Real X,
const Standard_Real Y,
const Standard_Real aTol,
Standard_Real& DMin)
{
Standard_Real TheTol = HasOwnTolerance()? myOwnTolerance : aTol;
gp_Pnt2d Pick(X,Y);
Standard_Real Angle = (gp_Dir2d(gp_Vec2d(myax2d.Location(),Pick))).Angle(myax2d.Direction());
if(Angle<0 && Angle>myangle) return Standard_False;
else
{
DMin =myax2d.Location().Distance(Pick);
if (DMin>myradius-TheTol&&DMin<=myradius+TheTol) return Standard_True;
}
return Standard_False;
}
Standard_Boolean Select2D_SensitiveArc::
Matches (const Standard_Real XMin,
const Standard_Real YMin,
const Standard_Real XMax,
const Standard_Real YMax,
const Standard_Real aTol)
{
Standard_Real TheTol = HasOwnTolerance()? myOwnTolerance : aTol;
if(mynbpt<1) return Standard_True; //to avoid problems...
Standard_Real deteta = myangle/mynbpt;
Bnd_Box2d BoundBox;
BoundBox.Update(XMin-TheTol,YMin-TheTol,XMax+TheTol,YMax+TheTol);
gp_Pnt2d ExtPt = myax2d.Location().Translated(gp_Vec2d(myax2d.Direction())*myradius);
if(BoundBox.IsOut(ExtPt)) return Standard_False;
for (Standard_Integer I=1;I<=mynbpt;I++)
{
if(BoundBox.IsOut(ExtPt.Rotated(myax2d.Location(),deteta*I))) return Standard_False;
}
return Standard_True;
}
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