---

Common/vtkCoordinate.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkCoordinate.h,v $
  Language:  C++

  Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkCoordinate_h
#define __vtkCoordinate_h

#include "vtkObject.h"
class vtkViewport;

#define VTK_DISPLAY             0
#define VTK_NORMALIZED_DISPLAY  1
#define VTK_VIEWPORT            2
#define VTK_NORMALIZED_VIEWPORT 3
#define VTK_VIEW                4
#define VTK_WORLD               5
#define VTK_USERDEFINED         6

class VTK_COMMON_EXPORT vtkCoordinate : public vtkObject
{
public:
  vtkTypeRevisionMacro(vtkCoordinate,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkCoordinate* New();


  vtkSetMacro(CoordinateSystem, int);
  vtkGetMacro(CoordinateSystem, int);
  void SetCoordinateSystemToDisplay() {this->SetCoordinateSystem(VTK_DISPLAY);}
  void SetCoordinateSystemToNormalizedDisplay() 
        {this->SetCoordinateSystem(VTK_NORMALIZED_DISPLAY);}
  void SetCoordinateSystemToViewport() 
        {this->SetCoordinateSystem(VTK_VIEWPORT);}
  void SetCoordinateSystemToNormalizedViewport() 
        {this->SetCoordinateSystem(VTK_NORMALIZED_VIEWPORT);}
  void SetCoordinateSystemToView() {this->SetCoordinateSystem(VTK_VIEW);}
  void SetCoordinateSystemToWorld() {this->SetCoordinateSystem(VTK_WORLD);}
    
  const char *GetCoordinateSystemAsString ();


  vtkSetVector3Macro(Value,float);
  vtkGetVector3Macro(Value,float);
  void SetValue(float a, float b) { this->SetValue(a,b,0.0);}
  

  virtual void SetReferenceCoordinate(vtkCoordinate*);
  vtkGetObjectMacro(ReferenceCoordinate,vtkCoordinate);


  void SetViewport(vtkViewport *viewport);
  vtkGetObjectMacro(Viewport,vtkViewport);


  float *GetComputedWorldValue(vtkViewport *);
  int *GetComputedViewportValue(vtkViewport *);
  int *GetComputedDisplayValue(vtkViewport *);
  int *GetComputedLocalDisplayValue(vtkViewport *);

  float *GetComputedFloatViewportValue(vtkViewport *);
  float *GetComputedFloatDisplayValue(vtkViewport *);

  float *GetComputedValue(vtkViewport *);


  virtual float *GetComputedUserDefinedValue(vtkViewport *)
    { return this->Value; }

protected:
  vtkCoordinate();
  ~vtkCoordinate();

  float Value[3];
  int   CoordinateSystem;
  vtkCoordinate *ReferenceCoordinate;
  vtkViewport *Viewport;
  float ComputedWorldValue[3];
  int   ComputedDisplayValue[2];
  int   ComputedViewportValue[2];
  int   Computing;

  float ComputedFloatDisplayValue[2];
  float ComputedFloatViewportValue[2];
  float ComputedUserDefinedValue[3];

private:
  vtkCoordinate(const vtkCoordinate&);  // Not implemented.
  void operator=(const vtkCoordinate&);  // Not implemented.
};

#endif

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