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

  Program:   ParaView
  Module:    vtkPVAnimationCue.h

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html 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.

=========================================================================*/
// .NAME vtkPVAnimationCue - proxy for vtkAnimationCue.
// .SECTION Description
// This is a proxy for vtkAnimationCue. All animation proxies are client
// side proxies.
// This class needs a vtkPVCueManipulator. The \b Manipulator
// performs the actual interpolation.
// .SECTION See Also
// vtkAnimationCue vtkSMAnimationSceneProxy
//

#ifndef vtkPVAnimationCue_h
#define vtkPVAnimationCue_h

#include "vtkAnimationCue.h"
#include "vtkPVAnimationModule.h" // needed for export macro

class vtkAnimationCue;
class vtkCommand;
class vtkPVCueManipulator;

class VTKPVANIMATION_EXPORT vtkPVAnimationCue : public vtkAnimationCue
{
public:
  vtkTypeMacro(vtkPVAnimationCue, vtkAnimationCue);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // The index of the element of the property this cue animates.
  // If the index is -1, the cue will animate all the elements
  // of the animated property.
  vtkSetMacro(AnimatedElement, int);
  vtkGetMacro(AnimatedElement, int);

  // Description:
  // Get/Set the manipulator used to compute values
  // for each instance in the animation.
  // Note that the time passed to the Manipulator is normalized [0,1]
  // to the extents of this cue.
  void SetManipulator(vtkPVCueManipulator*);
  vtkGetObjectMacro(Manipulator, vtkPVCueManipulator);

  // Description:
  // Enable/Disable this cue.
  vtkSetMacro(Enabled, int);
  vtkGetMacro(Enabled, int);
  vtkBooleanMacro(Enabled, int);

  // Description:
  // Used to update the animated item. This API makes it possible for vtk-level
  // classes to update properties without actually linking with the
  // ServerManager library. This only works since they object are created only
  // on the client.
  virtual void BeginUpdateAnimationValues() = 0;
  virtual void SetAnimationValue(int index, double value) =0;
  virtual void EndUpdateAnimationValues() = 0;

  // Description:
  // When set to true, the manipulator is skipped and the key frame value is set
  // by using the ClockTime directly. false by default.
  vtkSetMacro(UseAnimationTime, bool);
  vtkGetMacro(UseAnimationTime, bool);

  // Description:
  // Overridden to ignore the calls when this->Enabled == false.
  virtual void Initialize();
  virtual void Tick(double currenttime, double deltatime, double clocktime);
  virtual void Finalize();

protected:
  vtkPVAnimationCue();
  ~vtkPVAnimationCue();

  // Description:
  virtual void StartCueInternal();
  virtual void TickInternal(double currenttime, double deltatime,
    double clocktime);
  virtual void EndCueInternal();

//BTX
  friend class vtkSMAnimationSceneProxy;
//ETX

  unsigned long ObserverID;
  bool UseAnimationTime;
  int AnimatedElement;
  int Enabled;

  vtkAnimationCue *AnimationCue;
  vtkPVCueManipulator* Manipulator;
private:
  vtkPVAnimationCue(const vtkPVAnimationCue&); // Not implemented
  void operator=(const vtkPVAnimationCue&); // Not implemented
};

#endif