vtkImplicitPlaneWidget.h

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

  Program:   Visualization Toolkit
  Module:    vtkImplicitPlaneWidget.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 vtkImplicitPlaneWidget_h
#define vtkImplicitPlaneWidget_h

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

class vtkActor;
class vtkPolyDataMapper;
class vtkCellPicker;
class vtkConeSource;
class vtkLineSource;
class vtkSphereSource;
class vtkTubeFilter;
class vtkPlane;
class vtkCutter;
class vtkProperty;
class vtkImageData;
class vtkOutlineFilter;
class vtkFeatureEdges;
class vtkPolyData;
class vtkTransform;

class VTKINTERACTIONWIDGETS_EXPORT vtkImplicitPlaneWidget : public vtkPolyDataSourceWidget
{
public:
  static vtkImplicitPlaneWidget *New();

  vtkTypeMacro(vtkImplicitPlaneWidget,vtkPolyDataSourceWidget);
  void PrintSelf(ostream& os, vtkIndent indent);


  virtual void SetEnabled(int);
  virtual void PlaceWidget(double bounds[6]);
  void PlaceWidget()
    {this->Superclass::PlaceWidget();}
  void PlaceWidget(double xmin, double xmax, double ymin, double ymax,
                   double zmin, double zmax)
    {this->Superclass::PlaceWidget(xmin,xmax,ymin,ymax,zmin,zmax);}


  virtual void SetOrigin(double x, double y, double z);
  virtual void SetOrigin(double x[3]);
  double* GetOrigin();
  void GetOrigin(double xyz[3]);


  void SetNormal(double x, double y, double z);
  void SetNormal(double x[3]);
  double* GetNormal();
  void GetNormal(double xyz[3]);


  void SetNormalToXAxis(int);
  vtkGetMacro(NormalToXAxis,int);
  vtkBooleanMacro(NormalToXAxis,int);
  void SetNormalToYAxis(int);
  vtkGetMacro(NormalToYAxis,int);
  vtkBooleanMacro(NormalToYAxis,int);
  void SetNormalToZAxis(int);
  vtkGetMacro(NormalToZAxis,int);
  vtkBooleanMacro(NormalToZAxis,int);


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


  void SetDrawPlane(int plane);
  vtkGetMacro(DrawPlane,int);
  vtkBooleanMacro(DrawPlane,int);


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


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


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


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


  vtkSetClampMacro(DiagonalRatio,double,0,2);
  vtkGetMacro(DiagonalRatio,double);

  void GetPolyData(vtkPolyData *pd);

  vtkPolyDataAlgorithm* GetPolyDataAlgorithm();

  void GetPlane(vtkPlane *plane);

  void UpdatePlacement();

  virtual void SizeHandles();


  vtkGetObjectMacro(NormalProperty,vtkProperty);
  vtkGetObjectMacro(SelectedNormalProperty,vtkProperty);


  vtkGetObjectMacro(PlaneProperty,vtkProperty);
  vtkGetObjectMacro(SelectedPlaneProperty,vtkProperty);


  vtkGetObjectMacro(OutlineProperty,vtkProperty);
  vtkGetObjectMacro(SelectedOutlineProperty,vtkProperty);


  vtkGetObjectMacro(EdgesProperty,vtkProperty);

protected:
  vtkImplicitPlaneWidget();
  ~vtkImplicitPlaneWidget();

  // Manage the state of the widget
  int State;
  enum WidgetState
  {
    Start=0,
    MovingPlane,
    MovingOutline,
    MovingOrigin,
    Scaling,
    Pushing,
    Rotating,
    Outside
  };

  //handles the events
  static void ProcessEvents(vtkObject* object, unsigned long event,
                            void* clientdata, void* calldata);

  // ProcessEvents() dispatches to these methods.
  void OnLeftButtonDown();
  void OnLeftButtonUp();
  void OnMiddleButtonDown();
  void OnMiddleButtonUp();
  void OnRightButtonDown();
  void OnRightButtonUp();
  void OnMouseMove();

  // Controlling ivars
  int NormalToXAxis;
  int NormalToYAxis;
  int NormalToZAxis;
  void UpdateRepresentation();

  // The actual plane which is being manipulated
  vtkPlane *Plane;

  // The bounding box is represented by a single voxel image data
  vtkImageData      *Box;
  vtkOutlineFilter  *Outline;
  vtkPolyDataMapper *OutlineMapper;
  vtkActor          *OutlineActor;
  void HighlightOutline(int highlight);
  int OutlineTranslation; //whether the outline can be moved
  int ScaleEnabled; //whether the widget can be scaled
  int OutsideBounds; //whether the widget can be moved outside input's bounds

  // The cut plane is produced with a vtkCutter
  vtkCutter         *Cutter;
  vtkPolyDataMapper *CutMapper;
  vtkActor          *CutActor;
  int               DrawPlane;
  virtual void HighlightPlane(int highlight);

  // Optional tubes are represented by extracting boundary edges and tubing
  vtkFeatureEdges   *Edges;
  vtkTubeFilter     *EdgesTuber;
  vtkPolyDataMapper *EdgesMapper;
  vtkActor          *EdgesActor;
  int               Tubing; //control whether tubing is on

  // Control final length of the arrow:
  double DiagonalRatio;

  // The + normal cone
  vtkConeSource     *ConeSource;
  vtkPolyDataMapper *ConeMapper;
  vtkActor          *ConeActor;
  void HighlightNormal(int highlight);

  // The + normal line
  vtkLineSource     *LineSource;
  vtkPolyDataMapper *LineMapper;
  vtkActor          *LineActor;

  // The - normal cone
  vtkConeSource     *ConeSource2;
  vtkPolyDataMapper *ConeMapper2;
  vtkActor          *ConeActor2;

  // The - normal line
  vtkLineSource     *LineSource2;
  vtkPolyDataMapper *LineMapper2;
  vtkActor          *LineActor2;

  // The origin positioning handle
  vtkSphereSource   *Sphere;
  vtkPolyDataMapper *SphereMapper;
  vtkActor          *SphereActor;
  int OriginTranslation; //whether the origin (sphere) can be moved

  // Do the picking
  vtkCellPicker *Picker;

  // Register internal Pickers within PickingManager
  virtual void RegisterPickers();

  // Transform the normal (used for rotation)
  vtkTransform *Transform;

  // Methods to manipulate the plane
  void ConstrainOrigin(double x[3]);
  void Rotate(int X, int Y, double *p1, double *p2, double *vpn);
  void TranslatePlane(double *p1, double *p2);
  void TranslateOutline(double *p1, double *p2);
  void TranslateOrigin(double *p1, double *p2);
  void Push(double *p1, double *p2);
  void Scale(double *p1, double *p2, int X, int Y);

  // Properties used to control the appearance of selected objects and
  // the manipulator in general.
  vtkProperty *NormalProperty;
  vtkProperty *SelectedNormalProperty;
  vtkProperty *PlaneProperty;
  vtkProperty *SelectedPlaneProperty;
  vtkProperty *OutlineProperty;
  vtkProperty *SelectedOutlineProperty;
  vtkProperty *EdgesProperty;
  void CreateDefaultProperties();

  void GeneratePlane();

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

#endif