dox/Interaction/Widgets/vtkDistanceRepresentation3D.h

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

  Program:   Visualization Toolkit
  Module:    vtkDistanceRepresentation3D.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 __vtkDistanceRepresentation3D_h
#define __vtkDistanceRepresentation3D_h

#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkDistanceRepresentation.h"

class vtkPoints;
class vtkPolyData;
class vtkPolyDataMapper;
class vtkActor;
class vtkVectorText;
class vtkFollower;
class vtkBox;
class vtkCylinderSource;
class vtkGlyph3D;
class vtkDoubleArray;
class vtkTransformPolyDataFilter;
class vtkProperty;


class VTKINTERACTIONWIDGETS_EXPORT vtkDistanceRepresentation3D : public vtkDistanceRepresentation
{
public:
  static vtkDistanceRepresentation3D *New();


  vtkTypeMacro(vtkDistanceRepresentation3D,vtkDistanceRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);


  virtual double GetDistance()
    {return this->Distance;}


  void SetGlyphScale(double scale);
  vtkGetMacro(GlyphScale, double);

  virtual vtkProperty *GetLineProperty();


  void SetLabelPosition(double labelPosition);
  vtkGetMacro(LabelPosition, double);


  vtkSetClampMacro(MaximumNumberOfRulerTicks, int, 1, VTK_INT_MAX);
  vtkGetMacro(MaximumNumberOfRulerTicks, int);


  vtkGetObjectMacro(GlyphActor, vtkActor);


  vtkGetObjectMacro(LabelActor, vtkFollower);


  double* GetPoint1WorldPosition();
  double* GetPoint2WorldPosition();
  void GetPoint1WorldPosition(double pos[3]);
  void GetPoint2WorldPosition(double pos[3]);
  void SetPoint1WorldPosition(double pos[3]);
  void SetPoint2WorldPosition(double pos[3]);

  void SetPoint1DisplayPosition(double pos[3]);
  void SetPoint2DisplayPosition(double pos[3]);
  void GetPoint1DisplayPosition(double pos[3]);
  void GetPoint2DisplayPosition(double pos[3]);


  virtual void BuildRepresentation();
  virtual double *GetBounds();


  virtual void ReleaseGraphicsResources(vtkWindow *w);
  virtual int RenderOpaqueGeometry(vtkViewport *viewport);
  virtual int RenderTranslucentPolygonalGeometry(vtkViewport *viewport);


  void SetLabelScale(double x, double y, double z)
  {
    double scale[3];
    scale[0] = x;
    scale[1] = y;
    scale[2] = z;
    this->SetLabelScale(scale);
  }
  virtual void SetLabelScale( double scale[3] );
  virtual double * GetLabelScale();

  virtual vtkProperty *GetLabelProperty();

protected:
  vtkDistanceRepresentation3D();
  ~vtkDistanceRepresentation3D();

  // The line
  vtkPoints         *LinePoints;
  vtkPolyData       *LinePolyData;
  vtkPolyDataMapper *LineMapper;
  vtkActor          *LineActor;

  // The distance label
  vtkVectorText     *LabelText;
  vtkPolyDataMapper *LabelMapper;
  vtkFollower       *LabelActor;

  // Support internal operations
  bool LabelScaleSpecified;

  // The 3D disk tick marks
  vtkPoints         *GlyphPoints;
  vtkDoubleArray    *GlyphVectors;
  vtkPolyData       *GlyphPolyData;
  vtkCylinderSource *GlyphCylinder;
  vtkTransformPolyDataFilter *GlyphXForm;
  vtkGlyph3D        *Glyph3D;
  vtkPolyDataMapper *GlyphMapper;
  vtkActor          *GlyphActor;

  // Glyph3D scale
  double GlyphScale;
  bool   GlyphScaleSpecified;

  // The distance between the two points
  double Distance;

  // Support GetBounds() method
  vtkBox *BoundingBox;

  // Maximum number of ticks on the 3d ruler
  int MaximumNumberOfRulerTicks;

  // Label title position
  double LabelPosition;

private:
  vtkDistanceRepresentation3D(const vtkDistanceRepresentation3D&);  //Not implemented
  void operator=(const vtkDistanceRepresentation3D&);  //Not implemented

  // Internal method to update the position of the label.
  void UpdateLabelPosition();
};

#endif