dox/Widgets/vtkOrientedGlyphContourRepresentation.h

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

  Program:   Visualization Toolkit
  Module:    vtkOrientedGlyphContourRepresentation.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 __vtkOrientedGlyphContourRepresentation_h
#define __vtkOrientedGlyphContourRepresentation_h

#include "vtkContourRepresentation.h"

class vtkProperty;
class vtkActor;
class vtkPolyDataMapper;
class vtkPolyData;
class vtkGlyph3D;
class vtkPoints;

class VTK_WIDGETS_EXPORT vtkOrientedGlyphContourRepresentation : public vtkContourRepresentation
{
public:
  static vtkOrientedGlyphContourRepresentation *New();


  vtkTypeMacro(vtkOrientedGlyphContourRepresentation,vtkContourRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);


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


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


  vtkGetObjectMacro(Property,vtkProperty);
  

  vtkGetObjectMacro(ActiveProperty,vtkProperty);
  

  vtkGetObjectMacro(LinesProperty,vtkProperty);
  

  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 GetActors(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();


  vtkSetMacro( AlwaysOnTop, int );
  vtkGetMacro( AlwaysOnTop, int );
  vtkBooleanMacro( AlwaysOnTop, int );

  void SetLineColor(double r, double g, double b);
  
  virtual void SetShowSelectedNodes(int);
  
  virtual double *GetBounds();
  
protected:
  vtkOrientedGlyphContourRepresentation();
  ~vtkOrientedGlyphContourRepresentation();

  // Render the cursor
  vtkActor             *Actor;
  vtkPolyDataMapper    *Mapper;
  vtkGlyph3D           *Glypher;
  vtkActor             *ActiveActor;
  vtkPolyDataMapper    *ActiveMapper;
  vtkGlyph3D           *ActiveGlypher;
  vtkPolyData          *CursorShape;
  vtkPolyData          *ActiveCursorShape;
  vtkPolyData          *FocalData;
  vtkPoints            *FocalPoint;
  vtkPolyData          *ActiveFocalData;
  vtkPoints            *ActiveFocalPoint;
  
  vtkPolyData          *SelectedNodesData;
  vtkPoints            *SelectedNodesPoints;
  vtkActor             *SelectedNodesActor;
  vtkPolyDataMapper    *SelectedNodesMapper;
  vtkGlyph3D           *SelectedNodesGlypher;
  vtkPolyData          *SelectedNodesCursorShape;
  void CreateSelectedNodesRepresentation();

  vtkPolyData          *Lines;
  vtkPolyDataMapper    *LinesMapper;
  vtkActor             *LinesActor;
  
  // 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.
  vtkProperty   *Property;
  vtkProperty   *ActiveProperty;
  vtkProperty   *LinesProperty;
  void           CreateDefaultProperties();
  
  
  // Distance between where the mouse event happens and where the
  // widget is focused - maintain this distance during interaction.
  double InteractionOffset[2];

  int AlwaysOnTop;

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

#endif

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