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// Copyright: Matra-Datavision 1995
// File: Select2D_SensitiveSegment.cxx
// Created: Thu Jan 26 11:50:08 1995
// Author: Mister rmi
// <rmi>
#include <Select2D_SensitiveSegment.ixx>
#include <Bnd_Box2d.hxx>
#include <gp_Lin2d.hxx>
#include <gp_Dir2d.hxx>
#include <gp_Vec2d.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <SelectBasics_BasicTool.hxx>
//=====================================================
// Function : Create
// Purpose :Constructor
//=====================================================
Select2D_SensitiveSegment::
Select2D_SensitiveSegment(const Handle(SelectBasics_EntityOwner)& OwnerId,
const gp_Pnt2d& FirstP,
const gp_Pnt2d& LastP,
const Standard_Integer MaxRect):
Select2D_SensitiveEntity(OwnerId),
mymaxrect(MaxRect),
mystart(FirstP),
myend(LastP)
{}
//=====================================================
// Function : Areas
// Purpose :
//=====================================================
void Select2D_SensitiveSegment::
Areas(SelectBasics_ListOfBox2d& boxes)
{
// look for the angle with X axis if x % pi/4 <pi/12 -> one box
//gp_Dir2d dy (0.,1.);
gp_Vec2d MyVec(mystart,myend),VAxx(gp_Dir2d(0.,1.));
Standard_Real theangle = (VAxx.Angle(MyVec));
theangle = Abs(theangle);
if(theangle>=PI/2.) theangle-=PI/2;
if(theangle>=PI/12. && theangle <=5*PI/12.)
{
TColgp_Array1OfPnt2d BoxPoint (1,mymaxrect+1);
BoxPoint (1) = mystart;BoxPoint(mymaxrect+1)=myend;
gp_Vec2d Vtr = MyVec/mymaxrect;
// for (Standard_Integer i=2;i<=mymaxrect;i++)
Standard_Integer i;
for ( i=2;i<=mymaxrect;i++)
{BoxPoint (i) = BoxPoint (i-1).Translated(Vtr);}
for (i=2;i<=mymaxrect+1;i++)
{ Bnd_Box2d curbox;
curbox.Set(BoxPoint(i-1));
curbox.Add(BoxPoint(i));
boxes.Append(curbox);
}
}
else
{
Bnd_Box2d curbox;
curbox.Set(mystart);
curbox.Add(myend);
boxes.Append(curbox);
}
}
//=====================================================
// Function :Matches
// Purpose :
//=====================================================
Standard_Boolean Select2D_SensitiveSegment::
Matches(const Standard_Real X,
const Standard_Real Y,
const Standard_Real aTol,
Standard_Real& DMin)
{
// gp_Pnt2d pickpoint(X,Y);
// gp_Vec2d V(mystart,myend);
// gp_Lin2d Lin(mystart,V);
Standard_Real TheTol = HasOwnTolerance()? myOwnTolerance : aTol;
DMin=0.0;
if(mystart.Distance(myend)<=TheTol) DMin = Min(mystart.Distance(gp_Pnt2d(X,Y)),
myend.Distance(gp_Pnt2d(X,Y)));
else
DMin =Abs (gp_Lin2d(mystart,gp_Vec2d(mystart,myend)).Distance(gp_Pnt2d(X,Y)));
if(DMin<=TheTol) return Standard_True;
return Standard_False;
}
Standard_Boolean Select2D_SensitiveSegment::
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;
Bnd_Box2d BoundBox;
BoundBox.Update(XMin-TheTol,YMin-TheTol,XMax+TheTol,YMax+TheTol);
if (BoundBox.IsOut(mystart)&&BoundBox.IsOut(myend)) return Standard_False;
return Standard_True;
}
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