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

  Program:   Visualization Toolkit
  Module:    vtkProp3DButtonRepresentation.h

  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.

=========================================================================*/
// .NAME vtkProp3DButtonRepresentation - defines a representation for a vtkButtonWidget
// .SECTION Description
// This class implements one type of vtkButtonRepresentation. Each button
// state can be represented with a separate instance of vtkProp3D. Thus
// buttons can be represented with vtkActor, vtkImageActor, volumes (e.g.,
// vtkVolume) and/or any other vtkProp3D. Also, the class invokes events when
// highlighting occurs (i.e., hovering, selecting) so that appropriate action
// can be taken to highlight the button (if desired).
//
// To use this representation, always begin by specifying the number of
// button states.  Then provide, for each state, an instance of vtkProp3D.
//
// This widget representation uses the conventional placement method. The
// button is placed inside the bounding box defined by PlaceWidget by translating
// and scaling the vtkProp3D to fit (each vtkProp3D is transformed). Therefore,
// you must define the number of button states and each state (i.e., vtkProp3D)
// prior to calling vtkPlaceWidget.

// .SECTION See Also
// vtkButtonWidget vtkButtonRepresentation vtkButtonSource vtkEllipticalButtonSource
// vtkRectangularButtonSource


#ifndef __vtkProp3DButtonRepresentation_h
#define __vtkProp3DButtonRepresentation_h

#include "vtkButtonRepresentation.h"

class vtkPropPicker;
class vtkProp3D;
class vtkProp3DFollower;
class vtkPropArray; //PIMPLd

class VTK_WIDGETS_EXPORT vtkProp3DButtonRepresentation : public vtkButtonRepresentation
{
public:
  // Description:
  // Instantiate the class.
  static vtkProp3DButtonRepresentation *New();

  // Description:
  // Standard methods for instances of the class.
  vtkTypeMacro(vtkProp3DButtonRepresentation,vtkButtonRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Add the ith texture corresponding to the ith button state.
  // The parameter i should be (0 <= i < NumberOfStates).
  void SetButtonProp(int i, vtkProp3D *prop);
  vtkProp3D *GetButtonProp(int i);

  // Description:
  // Specify whether the button should always face the camera. If enabled,
  // the button reorients itself towards the camera as the camera moves.
  vtkSetMacro(FollowCamera,int);
  vtkGetMacro(FollowCamera,int);
  vtkBooleanMacro(FollowCamera,int);

  // Description:
  // Extend the vtkButtonRepresentation::SetState() method.
  virtual void SetState(int state);

  // Description:
  // Provide the necessary methods to satisfy the vtkWidgetRepresentation API.
  virtual int ComputeInteractionState(int X, int Y, int modify=0);
  virtual void BuildRepresentation();

  // Description:
  // This method positions (translates and scales the props) into the
  // bounding box specified. Note all the button props are scaled.
  virtual void PlaceWidget(double bounds[6]);

  // Description:
  // Provide the necessary methods to satisfy the rendering API.
  virtual void ShallowCopy(vtkProp *prop);
  virtual double *GetBounds();
  virtual void GetActors(vtkPropCollection *pc);
  virtual void ReleaseGraphicsResources(vtkWindow*);
  virtual int RenderOpaqueGeometry(vtkViewport*);
  virtual int RenderVolumetricGeometry(vtkViewport*);
  virtual int RenderTranslucentPolygonalGeometry(vtkViewport*);
  virtual int HasTranslucentPolygonalGeometry();

protected:
  vtkProp3DButtonRepresentation();
  ~vtkProp3DButtonRepresentation();

  // The current vtkProp3D used to represent the button
  vtkProp3D *CurrentProp;

  // Follow the camera if requested
  vtkProp3DFollower *Follower;
  int FollowCamera;

  // Keep track of the props associated with the N
  // states of the button. This is a PIMPLd stl map.
  vtkPropArray *PropArray;

  // For picking the button
  vtkPropPicker *Picker;

private:
  vtkProp3DButtonRepresentation(const vtkProp3DButtonRepresentation&);  //Not implemented
  void operator=(const vtkProp3DButtonRepresentation&);  //Not implemented
};

#endif