vtkCameraInterpolator.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkCameraInterpolator.h,v $

  Copyright (c) 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 __vtkCameraInterpolator_h
#define __vtkCameraInterpolator_h

#include "vtkObject.h"

class vtkCamera;
class vtkCameraList;
class vtkTupleInterpolator;
class vtkCameraList;


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

  static vtkCameraInterpolator* New();

  int GetNumberOfCameras();


  double GetMinimumT();
  double GetMaximumT();

  void Initialize();
  
  void AddCamera(double t, vtkCamera *camera);

  void RemoveCamera(double t);

  void InterpolateCamera(double t, vtkCamera *camera);

//BTX

  enum {INTERPOLATION_TYPE_LINEAR=0,
        INTERPOLATION_TYPE_SPLINE,
        INTERPOLATION_TYPE_MANUAL
  };
//ETX


  vtkSetClampMacro(InterpolationType,int, INTERPOLATION_TYPE_LINEAR,
                   INTERPOLATION_TYPE_MANUAL);
  vtkGetMacro(InterpolationType,int);
  void SetInterpolationTypeToLinear()
    {this->SetInterpolationType(INTERPOLATION_TYPE_LINEAR);}
  void SetInterpolationTypeToSpline()
    {this->SetInterpolationType(INTERPOLATION_TYPE_SPLINE);}
  void SetInterpolationTypeToManual()
    {this->SetInterpolationType(INTERPOLATION_TYPE_MANUAL);}


  virtual void SetPositionInterpolator(vtkTupleInterpolator*);
  vtkGetObjectMacro(PositionInterpolator,vtkTupleInterpolator);

  virtual void SetFocalPointInterpolator(vtkTupleInterpolator*);
  vtkGetObjectMacro(FocalPointInterpolator,vtkTupleInterpolator);

  virtual void SetViewUpInterpolator(vtkTupleInterpolator*);
  vtkGetObjectMacro(ViewUpInterpolator,vtkTupleInterpolator);

  virtual void SetViewAngleInterpolator(vtkTupleInterpolator*);
  vtkGetObjectMacro(ViewAngleInterpolator,vtkTupleInterpolator);

  virtual void SetParallelScaleInterpolator(vtkTupleInterpolator*);
  vtkGetObjectMacro(ParallelScaleInterpolator,vtkTupleInterpolator);

  virtual void SetClippingRangeInterpolator(vtkTupleInterpolator*);
  vtkGetObjectMacro(ClippingRangeInterpolator,vtkTupleInterpolator);

  unsigned long GetMTime();

protected:
  vtkCameraInterpolator();
  virtual ~vtkCameraInterpolator();

  // Control the interpolation type
  int InterpolationType;

  // These perform the interpolation
  vtkTupleInterpolator *PositionInterpolator;
  vtkTupleInterpolator *FocalPointInterpolator;
  vtkTupleInterpolator *ViewUpInterpolator;
  vtkTupleInterpolator *ViewAngleInterpolator;
  vtkTupleInterpolator *ParallelScaleInterpolator;
  vtkTupleInterpolator *ClippingRangeInterpolator;

  // Initialize the interpolating splines
  int Initialized;
  vtkTimeStamp InitializeTime;
  void InitializeInterpolation();

  // Hold the list of cameras. PIMPL'd STL list.
  vtkCameraList *CameraList;

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

};

#endif

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