dox/Widgets/vtkOrientedGlyphFocalPlaneContourRepresentation.h

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

  Program:   Visualization Toolkit
  Module:    vtkOrientedGlyphFocalPlaneContourRepresentation.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.

=========================================================================*/
#ifndef __vtkOrientedGlyphFocalPlaneContourRepresentation_h
#define __vtkOrientedGlyphFocalPlaneContourRepresentation_h

#include "vtkFocalPlaneContourRepresentation.h"

class vtkProperty2D;
class vtkActor2D;
class vtkPolyDataMapper2D;
class vtkPolyData;
class vtkGlyph2D;
class vtkPoints;
class vtkPolyData;

class VTK_WIDGETS_EXPORT vtkOrientedGlyphFocalPlaneContourRepresentation : 
  public vtkFocalPlaneContourRepresentation
{
public:
  static vtkOrientedGlyphFocalPlaneContourRepresentation *New();


  vtkTypeMacro(vtkOrientedGlyphFocalPlaneContourRepresentation,
                                    vtkFocalPlaneContourRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);


  void SetCursorShape(vtkPolyData *cursorShape);
  vtkPolyData *GetCursorShape();


  void SetActiveCursorShape(vtkPolyData *activeShape);
  vtkPolyData *GetActiveCursorShape();


  vtkGetObjectMacro(Property,vtkProperty2D);
  

  vtkGetObjectMacro(ActiveProperty,vtkProperty2D);
  

  vtkGetObjectMacro(LinesProperty,vtkProperty2D);
  

  virtual void SetRenderer(vtkRenderer *ren);
  virtual void BuildRepresentation();
  virtual void StartWidgetInteraction(double eventPos[2]);
  virtual void WidgetInteraction(double eventPos[2]);
  virtual int ComputeInteractionState(int X, int Y, int modified=0);


  virtual void GetActors2D(vtkPropCollection *);
  virtual void ReleaseGraphicsResources(vtkWindow *);
  virtual int RenderOverlay(vtkViewport *viewport);
  virtual int RenderOpaqueGeometry(vtkViewport *viewport);
  virtual int RenderTranslucentPolygonalGeometry(vtkViewport *viewport);
  virtual int HasTranslucentPolygonalGeometry();
  
  virtual vtkPolyData * GetContourRepresentationAsPolyData();
  
  vtkMatrix4x4   *GetContourPlaneDirectionCosines(const double origin[3]);
 
protected:
  vtkOrientedGlyphFocalPlaneContourRepresentation();
  ~vtkOrientedGlyphFocalPlaneContourRepresentation();

  // Render the cursor
  vtkActor2D           *Actor;
  vtkPolyDataMapper2D  *Mapper;
  vtkGlyph2D           *Glypher;
  vtkActor2D           *ActiveActor;
  vtkPolyDataMapper2D  *ActiveMapper;
  vtkGlyph2D           *ActiveGlypher;
  vtkPolyData          *CursorShape;
  vtkPolyData          *ActiveCursorShape;
  vtkPolyData          *FocalData;
  vtkPoints            *FocalPoint;
  vtkPolyData          *ActiveFocalData;
  vtkPoints            *ActiveFocalPoint;

  // The polydata represents the contour in display co-ordinates.
  vtkPolyData          *Lines;
  vtkPolyDataMapper2D  *LinesMapper;
  vtkActor2D           *LinesActor;

  // The polydata represents the contour in world coordinates. It is updated
  // (kept in sync with Lines) every time the GetContourRepresentationAsPolyData() 
  // method is called. 
  vtkPolyData          *LinesWorldCoordinates;

  // Support picking
  double LastPickPosition[3];
  double LastEventPosition[2];
  
  // Methods to manipulate the cursor
  void Translate(double eventPos[2]);
  void Scale(double eventPos[2]);
  void ShiftContour(double eventPos[2]);
  void ScaleContour(double eventPos[2]);

  void ComputeCentroid(double* ioCentroid);

  // Properties used to control the appearance of selected objects and
  // the manipulator in general.
  vtkProperty2D *Property;
  vtkProperty2D *ActiveProperty;
  vtkProperty2D *LinesProperty;

  vtkMatrix4x4  *ContourPlaneDirectionCosines;

  void           CreateDefaultProperties();
  
  
  // Distance between where the mouse event happens and where the
  // widget is focused - maintain this distance during interaction.
  double InteractionOffset[2];

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

#endif