src/GLViewer/GLViewer_CoordSystem.h

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//  Copyright (C) 2005 OPEN CASCADE
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2.1 of the License.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
//  Author : OPEN CASCADE
//

// File:      GLViewer_CoordSystem.h
// Created:   November, 2004

#ifndef GLVIEWER_COORDSYSTEM_H
#define GLVIEWER_COORDSYSTEM_H

#include "GLViewer.h"

#ifdef WNT
#pragma warning( disable:4251 )
#endif

class GLVIEWER_API GLViewer_CoordSystem
{
public:
  enum CSType
  {
    Cartesian,
    Polar     
  };
  
private:
  double myX0, myY0;
  double myXUnit, myYUnit;
  double myRotation;
  
  CSType myType;
  
public:
  GLViewer_CoordSystem( CSType aType, double X0 = 0.0, double Y0 = 0.0, 
                        double XUnit = 1.0, double YUnit = 1.0, double Rotation = 0.0 );
  
  void getOrigin( double& x, double& y ) const;
  void setOrigin( double x, double y );
  
  void getUnits( double& x, double& y ) const;
  void setUnits( double x, double y );
  
  double getRotation() const;
  void   setRotation( double rotation );
  
  CSType getType() const;
  void setType( CSType type );
  
  void transform( GLViewer_CoordSystem& aSystem, double& x, double& y );
  
  
  virtual void getStretching( GLViewer_CoordSystem& aSystem, double& theX, double& theY );
  
  
protected:
  virtual void toReference( double& x, double& y );
  virtual void fromReference( double& x, double& y );
};

#ifdef WNT
#pragma warning ( default:4251 )
#endif

#endif

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