dox/Widgets/vtkBiDimensionalRepresentation.h

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

  Program:   Visualization Toolkit
  Module:    vtkBiDimensionalRepresentation.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 __vtkBiDimensionalRepresentation_h
#define __vtkBiDimensionalRepresentation_h

#include "vtkWidgetRepresentation.h"

class vtkHandleRepresentation;


class VTK_WIDGETS_EXPORT vtkBiDimensionalRepresentation : public vtkWidgetRepresentation
{
public:

  vtkTypeMacro(vtkBiDimensionalRepresentation,vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);


  virtual void SetPoint1WorldPosition(double pos[3]);
  virtual void SetPoint2WorldPosition(double pos[3]);
  virtual void SetPoint3WorldPosition(double pos[3]);
  virtual void SetPoint4WorldPosition(double pos[3]);
  virtual void GetPoint1WorldPosition(double pos[3]);
  virtual void GetPoint2WorldPosition(double pos[3]);
  virtual void GetPoint3WorldPosition(double pos[3]);
  virtual void GetPoint4WorldPosition(double pos[3]);
  virtual void SetPoint1DisplayPosition(double pos[3]);
  virtual void SetPoint2DisplayPosition(double pos[3]);
  virtual void SetPoint3DisplayPosition(double pos[3]);
  virtual void SetPoint4DisplayPosition(double pos[3]);
  virtual void GetPoint1DisplayPosition(double pos[3]);
  virtual void GetPoint2DisplayPosition(double pos[3]);
  virtual void GetPoint3DisplayPosition(double pos[3]);
  virtual void GetPoint4DisplayPosition(double pos[3]);


  vtkGetObjectMacro(Point1Representation,vtkHandleRepresentation);
  vtkGetObjectMacro(Point2Representation,vtkHandleRepresentation);
  vtkGetObjectMacro(Point3Representation,vtkHandleRepresentation);
  vtkGetObjectMacro(Point4Representation,vtkHandleRepresentation);


  vtkSetMacro(Line1Visibility,int);
  vtkGetMacro(Line1Visibility,int);
  vtkBooleanMacro(Line1Visibility,int);
  vtkSetMacro(Line2Visibility,int);
  vtkGetMacro(Line2Visibility,int);
  vtkBooleanMacro(Line2Visibility,int);


  void SetHandleRepresentation(vtkHandleRepresentation *handle);
  virtual void InstantiateHandleRepresentation();


  vtkSetClampMacro(Tolerance,int,1,100);
  vtkGetMacro(Tolerance,int);

  virtual double GetLength1();

  virtual double GetLength2();


  vtkSetStringMacro(LabelFormat);
  vtkGetStringMacro(LabelFormat);

//BTX -- used to communicate about the state of the representation
  enum {Outside=0,NearP1,NearP2,NearP3,NearP4,OnL1Inner,OnL1Outer,OnL2Inner,OnL2Outer,OnCenter};
//ETX


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


  void SetID(vtkIdType id);
  vtkGetMacro(ID, vtkIdType);

  virtual char* GetLabelText() = 0;


  virtual double* GetLabelPosition() = 0;
  virtual void GetLabelPosition(double pos[3]) = 0;
  virtual void GetWorldLabelPosition(double pos[3]) = 0;


  virtual void StartWidgetDefinition(double e[2]) = 0;
  virtual void Point2WidgetInteraction(double e[2]) = 0;
  virtual void Point3WidgetInteraction(double e[2]) = 0;
  virtual void StartWidgetManipulation(double e[2]) = 0;

protected:
  vtkBiDimensionalRepresentation();
  ~vtkBiDimensionalRepresentation();

  // Keep track if modifier is set
  int Modifier;

  // The handle and the rep used to close the handles
  vtkHandleRepresentation *HandleRepresentation;
  vtkHandleRepresentation *Point1Representation;
  vtkHandleRepresentation *Point2Representation;
  vtkHandleRepresentation *Point3Representation;
  vtkHandleRepresentation *Point4Representation;

  // Selection tolerance for the handles
  int Tolerance;

  // Visibility of the lines
  int Line1Visibility;
  int Line2Visibility;

  vtkIdType ID;
  int IDInitialized;

  // Internal variables
  double P1World[3];
  double P2World[3];
  double P3World[3];
  double P4World[3];
  double P21World[3];
  double P43World[3];
  double T21;
  double T43;
  double CenterWorld[3];
  double StartEventPositionWorld[4];

  // Format for printing the distance
  char *LabelFormat;

  // toggle to determine whether to place text above or below widget
  int ShowLabelAboveWidget;

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

#endif