vtkBoxRepresentation.h

Go to the documentation of this file.

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

  Program:   Visualization Toolkit
  Module:    vtkBoxRepresentation.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 vtkBoxRepresentation_h
#define vtkBoxRepresentation_h

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

class vtkActor;
class vtkPolyDataMapper;
class vtkLineSource;
class vtkSphereSource;
class vtkCellPicker;
class vtkProperty;
class vtkPolyData;
class vtkPoints;
class vtkPolyDataAlgorithm;
class vtkPointHandleRepresentation3D;
class vtkTransform;
class vtkPlane;
class vtkPlanes;
class vtkBox;
class vtkDoubleArray;
class vtkMatrix4x4;


class VTKINTERACTIONWIDGETS_EXPORT vtkBoxRepresentation : public vtkWidgetRepresentation
{
public:
  static vtkBoxRepresentation *New();


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

  void GetPlanes(vtkPlanes *planes);

  // Get the underlying planes used by this rep
  // this can be used as a cropping planes in vtkMapper
  vtkPlane *GetUnderlyingPlane(int i) {
    return this->Planes[i]; }


  vtkSetMacro(InsideOut,vtkTypeBool);
  vtkGetMacro(InsideOut,vtkTypeBool);
  vtkBooleanMacro(InsideOut,vtkTypeBool);

  virtual void GetTransform(vtkTransform *t);

  virtual void SetTransform(vtkTransform* t);

  void GetPolyData(vtkPolyData *pd);


  vtkGetObjectMacro(HandleProperty,vtkProperty);
  vtkGetObjectMacro(SelectedHandleProperty,vtkProperty);


  vtkGetObjectMacro(FaceProperty,vtkProperty);
  vtkGetObjectMacro(SelectedFaceProperty,vtkProperty);


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


  void SetOutlineFaceWires(int);
  vtkGetMacro(OutlineFaceWires,int);
  void OutlineFaceWiresOn() {this->SetOutlineFaceWires(1);}
  void OutlineFaceWiresOff() {this->SetOutlineFaceWires(0);}


  void SetOutlineCursorWires(int);
  vtkGetMacro(OutlineCursorWires,int);
  void OutlineCursorWiresOn() {this->SetOutlineCursorWires(1);}
  void OutlineCursorWiresOff() {this->SetOutlineCursorWires(0);}


  virtual void HandlesOn();
  virtual void HandlesOff();


  void PlaceWidget(double bounds[6]) override;
  void BuildRepresentation() override;
  int  ComputeInteractionState(int X, int Y, int modify=0) override;
  void StartWidgetInteraction(double e[2]) override;
  void WidgetInteraction(double e[2]) override;
  double *GetBounds() VTK_SIZEHINT(6) override;
  void StartComplexInteraction(
    vtkRenderWindowInteractor *iren,
    vtkAbstractWidget *widget,
    unsigned long event, void *calldata) override;
  void ComplexInteraction(
    vtkRenderWindowInteractor *iren,
    vtkAbstractWidget *widget,
    unsigned long event, void *calldata) override;
  int ComputeComplexInteractionState(
    vtkRenderWindowInteractor *iren,
    vtkAbstractWidget *widget,
    unsigned long event, void *calldata, int modify = 0) override;
  void EndComplexInteraction(
    vtkRenderWindowInteractor *iren,
    vtkAbstractWidget *widget,
    unsigned long event, void *calldata) override;


  void ReleaseGraphicsResources(vtkWindow*) override;
  int  RenderOpaqueGeometry(vtkViewport*) override;
  int  RenderTranslucentPolygonalGeometry(vtkViewport*) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;

  // Used to manage the state of the widget
  enum {Outside=0,MoveF0,MoveF1,MoveF2,MoveF3,MoveF4,MoveF5,Translating,Rotating,Scaling};

  void SetInteractionState(int state);


  vtkGetMacro(TwoPlaneMode, bool);
  void SetTwoPlaneMode(bool);


  vtkGetMacro(SnapToAxes, bool);
  vtkSetMacro(SnapToAxes, bool);


  void StepForward();
  void StepBackward();

  /*
  * Register internal Pickers within PickingManager
  */
  void RegisterPickers() override;

protected:
  vtkBoxRepresentation();
  ~vtkBoxRepresentation() override;

  // Manage how the representation appears
  double LastEventPosition[3];
  double LastEventOrientation[4];
  double StartEventOrientation[4];
  double SnappedEventOrientations[3][4];
  bool SnappedOrientation[3];
  bool SnapToAxes;

  bool TwoPlaneMode;

  // the hexahedron (6 faces)
  vtkActor          *HexActor;
  vtkPolyDataMapper *HexMapper;
  vtkPolyData       *HexPolyData;
  vtkPoints         *Points;  //used by others as well
  double             N[6][3]; //the normals of the faces

  // A face of the hexahedron
  vtkActor          *HexFace;
  vtkPolyDataMapper *HexFaceMapper;
  vtkPolyData       *HexFacePolyData;

  // glyphs representing hot spots (e.g., handles)
  vtkActor          **Handle;
  vtkPolyDataMapper **HandleMapper;
  vtkSphereSource   **HandleGeometry;
  virtual void PositionHandles();
  int HighlightHandle(vtkProp *prop); //returns cell id
  void HighlightFace(int cellId);
  void HighlightOutline(int highlight);
  virtual void ComputeNormals();
  virtual void SizeHandles();

  // wireframe outline
  vtkActor          *HexOutline;
  vtkPolyDataMapper *OutlineMapper;
  vtkPolyData       *OutlinePolyData;

  // Do the picking
  vtkCellPicker *HandlePicker;
  vtkCellPicker *HexPicker;
  vtkActor *CurrentHandle;
  int      CurrentHexFace;
  vtkCellPicker *LastPicker;

  // Transform the hexahedral points (used for rotations)
  vtkTransform *Transform;

  // Support GetBounds() method
  vtkBox *BoundingBox;

  // Properties used to control the appearance of selected objects and
  // the manipulator in general.
  vtkProperty *HandleProperty;
  vtkProperty *SelectedHandleProperty;
  vtkProperty *FaceProperty;
  vtkProperty *SelectedFaceProperty;
  vtkProperty *OutlineProperty;
  vtkProperty *SelectedOutlineProperty;
  virtual void CreateDefaultProperties();

  // Control the orientation of the normals
  vtkTypeBool InsideOut;
  int OutlineFaceWires;
  int OutlineCursorWires;
  void GenerateOutline();

  // Helper methods
  virtual void Translate(double *p1, double *p2);
  virtual void Scale(double *p1, double *p2, int X, int Y);
  virtual void Rotate(int X, int Y, double *p1, double *p2, double *vpn);
  void MovePlusXFace(double *p1, double *p2);
  void MoveMinusXFace(double *p1, double *p2);
  void MovePlusYFace(double *p1, double *p2);
  void MoveMinusYFace(double *p1, double *p2);
  void MovePlusZFace(double *p1, double *p2);
  void MoveMinusZFace(double *p1, double *p2);
  void UpdatePose(double *p1, double *d1, double *p2, double *d2);

  // Internal ivars for performance
  vtkPoints      *PlanePoints;
  vtkDoubleArray *PlaneNormals;
  vtkMatrix4x4   *Matrix;

  // The actual planes which are being manipulated
  vtkPlane *Planes[6];

  //"dir" is the direction in which the face can be moved i.e. the axis passing
  //through the center
  void MoveFace(double *p1, double *p2, double *dir,
                double *x1, double *x2, double *x3, double *x4,
                double *x5);
  //Helper method to obtain the direction in which the face is to be moved.
  //Handles special cases where some of the scale factors are 0.
  void GetDirection(const double Nx[3],const double Ny[3],
                    const double Nz[3], double dir[3]);


private:
  vtkBoxRepresentation(const vtkBoxRepresentation&) = delete;
  void operator=(const vtkBoxRepresentation&) = delete;
};

#endif