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322 lines
8.9 KiB
C++
322 lines
8.9 KiB
C++
// Created on: 1995-03-08
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// Created by: Laurent BUCHARD
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// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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//#define No_Standard_OutOfRange
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#include <CSLib_Class2d.hxx>
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#include <gp_Pnt2d.hxx>
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static inline
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Standard_Real Transform2d(const Standard_Real u,
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const Standard_Real umin,
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const Standard_Real umaxmumin);
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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template <class TCol_Containers2d>
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void CSLib_Class2d::Init(const TCol_Containers2d& TP2d,
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const Standard_Real aTolu,
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const Standard_Real aTolv,
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const Standard_Real umin,
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const Standard_Real vmin,
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const Standard_Real umax,
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const Standard_Real vmax)
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{
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Umin = umin;
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Vmin = vmin;
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Umax = umax;
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Vmax = vmax;
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//
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if ((umax <= umin) || (vmax <= vmin) || (TP2d.Length() < 3))
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{
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MyPnts2dX.Nullify();
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MyPnts2dY.Nullify();
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N = 0;
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}
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//
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else
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{
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Standard_Integer i, iLower;
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Standard_Real du, dv, aPrc;
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//
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aPrc = 1.e-10;
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N = TP2d.Length();
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Tolu = aTolu;
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Tolv = aTolv;
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MyPnts2dX = new TColStd_Array1OfReal(0, N);
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MyPnts2dY = new TColStd_Array1OfReal(0, N);
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du = umax - umin;
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dv = vmax - vmin;
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//
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iLower = TP2d.Lower();
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for (i = 0; i<N; ++i)
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{
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const gp_Pnt2d& aP2D = TP2d(i + iLower);
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MyPnts2dX->ChangeValue(i) = Transform2d(aP2D.X(), umin, du);
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MyPnts2dY->ChangeValue(i) = Transform2d(aP2D.Y(), vmin, dv);
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}
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MyPnts2dX->ChangeLast() = MyPnts2dX->First();
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MyPnts2dY->ChangeLast() = MyPnts2dY->First();
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//
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if (du>aPrc)
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{
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Tolu /= du;
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}
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if (dv>aPrc)
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{
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Tolv /= dv;
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}
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}
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}
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//=======================================================================
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//function : CSLib_Class2d
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//purpose :
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//=======================================================================
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CSLib_Class2d::CSLib_Class2d(const TColgp_Array1OfPnt2d& thePnts2d,
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const Standard_Real theTolU,
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const Standard_Real theTolV,
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const Standard_Real theUMin,
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const Standard_Real theVMin,
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const Standard_Real theUMax,
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const Standard_Real theVMax)
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{
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Init(thePnts2d, theTolU, theTolV, theUMin,
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theVMin, theUMax, theVMax);
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}
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//=======================================================================
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//function : CSLib_Class2d
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//purpose :
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//=======================================================================
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CSLib_Class2d::CSLib_Class2d(const TColgp_SequenceOfPnt2d& thePnts2d,
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const Standard_Real theTolU,
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const Standard_Real theTolV,
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const Standard_Real theUMin,
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const Standard_Real theVMin,
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const Standard_Real theUMax,
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const Standard_Real theVMax)
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{
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Init(thePnts2d, theTolU, theTolV, theUMin,
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theVMin, theUMax, theVMax);
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}
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//=======================================================================
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//function : SiDans
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//purpose :
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//=======================================================================
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Standard_Integer CSLib_Class2d::SiDans(const gp_Pnt2d& P) const
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{
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if(!N) {
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return 0;
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}
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//
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Standard_Real x,y, aTolu, aTolv;
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//
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x = P.X(); y = P.Y();
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aTolu=Tolu*(Umax-Umin);
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aTolv=Tolv*(Vmax-Vmin);
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//
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if(Umin<Umax && Vmin<Vmax) {
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if( ( x<(Umin-aTolu) ) ||
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( x>(Umax+aTolu) ) ||
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( y<(Vmin-aTolv) ) ||
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( y>(Vmax+aTolv) ) ) {
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return -1;
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}
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x=Transform2d(x,Umin,Umax-Umin);
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y=Transform2d(y,Vmin,Vmax-Vmin);
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}
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Standard_Integer res = InternalSiDansOuOn(x,y);
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if(res==-1) {
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return 0;
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}
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if(Tolu || Tolv) {
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if(res != InternalSiDans(x-Tolu,y-Tolv)) return 0;
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if(res != InternalSiDans(x+Tolu,y-Tolv)) return 0;
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if(res != InternalSiDans(x-Tolu,y+Tolv)) return 0;
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if(res != InternalSiDans(x+Tolu,y+Tolv)) return 0;
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}
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//
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return((res)? 1: -1);
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}
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//=======================================================================
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//function : SiDans_OnMode
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//purpose :
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//=======================================================================
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Standard_Integer CSLib_Class2d::SiDans_OnMode(const gp_Pnt2d& P,
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const Standard_Real Tol) const
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{
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if(!N){
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return 0;
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}
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//
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Standard_Real x,y, aTolu, aTolv;
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//
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x = P.X(); y = P.Y();
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aTolu=Tol;
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aTolv=Tol;
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//-- ****** TO DO LATER, ESTIMATE AT EACH POINT Tol2d depending on Tol3d *****
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if(Umin<Umax && Vmin<Vmax) {
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if(x<(Umin-aTolu) || (x>Umax+aTolu) ||
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(y<Vmin-aTolv) || (y>Vmax+aTolv)) {
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return -1;
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}
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x=Transform2d(x,Umin,Umax-Umin);
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y=Transform2d(y,Vmin,Vmax-Vmin);
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}
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//
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Standard_Integer res = InternalSiDansOuOn(x,y);
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if(aTolu || aTolv) {
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if(res != InternalSiDans(x-aTolu,y-aTolv)) return 0;
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if(res != InternalSiDans(x+aTolu,y-aTolv)) return 0;
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if(res != InternalSiDans(x-aTolu,y+aTolv)) return 0;
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if(res != InternalSiDans(x+aTolu,y+aTolv)) return 0;
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}
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return((res)? 1: -1);
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}
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//=======================================================================
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//function : InternalSiDans
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//purpose :
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//=======================================================================
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Standard_Integer CSLib_Class2d::InternalSiDans(const Standard_Real Px,
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const Standard_Real Py) const
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{
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Standard_Integer nbc, i, ip1, SH, NH;
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Standard_Real x, y, nx, ny;
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//
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nbc = 0;
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i = 0;
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ip1 = 1;
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x = (MyPnts2dX->Value(i)-Px);
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y = (MyPnts2dY->Value(i)-Py);
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SH = (y<0.)? -1 : 1;
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//
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for(i=0; i<N ; i++,ip1++) {
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nx = MyPnts2dX->Value(ip1) - Px;
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ny = MyPnts2dY->Value(ip1) - Py;
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NH = (ny<0.)? -1 : 1;
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if(NH!=SH) {
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if(x>0. && nx>0.) {
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nbc++;
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}
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else {
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if(x>0.0 || nx>0.) {
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if((x-y*(nx-x)/(ny-y))>0.) {
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nbc++;
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}
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}
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}
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SH = NH;
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}
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x = nx; y = ny;
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}
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return(nbc&1);
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}
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//modified by NIZNHY-PKV Fri Jan 15 09:03:48 2010f
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//=======================================================================
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//function : InternalSiDansOuOn
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//purpose : same code as above + test on ON (return(-1) in this case
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//=======================================================================
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Standard_Integer CSLib_Class2d::InternalSiDansOuOn(const Standard_Real Px,
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const Standard_Real Py) const
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{
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Standard_Integer nbc, i, ip1, SH, NH, iRet;
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Standard_Real x, y, nx, ny, aX;
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Standard_Real aYmin;
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//
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nbc = 0;
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i = 0;
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ip1 = 1;
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x = (MyPnts2dX->Value(i)-Px);
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y = (MyPnts2dY->Value(i)-Py);
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aYmin=y;
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SH = (y<0.)? -1 : 1;
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for(i=0; i<N ; i++, ip1++) {
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nx = MyPnts2dX->Value(ip1) - Px;
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ny = MyPnts2dY->Value(ip1) - Py;
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//-- le 14 oct 97
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if(nx<Tolu && nx>-Tolu && ny<Tolv && ny>-Tolv) {
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iRet=-1;
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return iRet;
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}
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//find Y coordinate of polyline for current X gka
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//in order to detect possible status ON
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Standard_Real aDx = (MyPnts2dX->Value(ip1) - MyPnts2dX->Value(ip1-1));
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if( (MyPnts2dX->Value(ip1-1) - Px) * nx < 0.)
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{
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Standard_Real aCurPY = MyPnts2dY->Value(ip1) - (MyPnts2dY->Value(ip1) - MyPnts2dY->Value(ip1-1))/aDx *nx;
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Standard_Real aDeltaY = aCurPY - Py;
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if(aDeltaY >= -Tolv && aDeltaY <= Tolv)
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{
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iRet=-1;
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return iRet;
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}
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}
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//
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NH = (ny<0.)? -1 : 1;
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if(NH!=SH) {
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if(x>0. && nx>0.) {
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nbc++;
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}
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else {
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if(x>0. || nx>0.) {
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aX=x-y*(nx-x)/(ny-y);
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if(aX>0.){
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nbc++;
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}
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}
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}
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SH = NH;
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}
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else {// y has same sign as ny
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if (ny<aYmin) {
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aYmin=ny;
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}
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}
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x = nx; y = ny;
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}// for(i=0; i<N ; i++,ip1++) {
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iRet=nbc&1;
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return iRet;
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}
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//modified by NIZNHY-PKV Fri Jan 15 09:03:55 2010t
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//=======================================================================
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//function : Transform2d
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//purpose :
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//=======================================================================
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Standard_Real Transform2d(const Standard_Real u,
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const Standard_Real umin,
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const Standard_Real umaxmumin)
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{
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if(umaxmumin>1e-10) {
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Standard_Real U = (u-umin)/umaxmumin;
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return U;
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}
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else {
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return u;
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}
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}
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