vtkSliderRepresentation3D.h

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

  Program:   Visualization Toolkit
  Module:    vtkSliderRepresentation3D.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 vtkSliderRepresentation3D_h
#define vtkSliderRepresentation3D_h

#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkSliderRepresentation.h"
#include "vtkCoordinate.h" // For vtkViewportCoordinateMacro

class vtkActor;
class vtkPolyDataMapper;
class vtkSphereSource;
class vtkCellPicker;
class vtkProperty;
class vtkCylinderSource;
class vtkVectorText;
class vtkAssembly;
class vtkTransform;
class vtkTransformPolyDataFilter;
class vtkMatrix4x4;


class VTKINTERACTIONWIDGETS_EXPORT vtkSliderRepresentation3D : public vtkSliderRepresentation
{
public:
  static vtkSliderRepresentation3D *New();


  vtkTypeMacro(vtkSliderRepresentation3D,vtkSliderRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkCoordinate *GetPoint1Coordinate();
  void SetPoint1InWorldCoordinates(double x, double y, double z);


  vtkCoordinate *GetPoint2Coordinate();
  void SetPoint2InWorldCoordinates(double x, double y, double z);


  void SetTitleText(const char*) override;
  const char* GetTitleText() override;


  vtkSetClampMacro(SliderShape,int,SphereShape,CylinderShape);
  vtkGetMacro(SliderShape, int);
  void SetSliderShapeToSphere() { this->SetSliderShape(SphereShape); }
  void SetSliderShapeToCylinder() { this->SetSliderShape(CylinderShape); }


  vtkSetMacro(Rotation,double);
  vtkGetMacro(Rotation,double);


  vtkGetObjectMacro(SliderProperty,vtkProperty);


  vtkGetObjectMacro(TubeProperty,vtkProperty);
  vtkGetObjectMacro(CapProperty,vtkProperty);


  vtkGetObjectMacro(SelectedProperty,vtkProperty);


  void PlaceWidget(double bounds[6]) override;
  void BuildRepresentation() override;
  void StartWidgetInteraction(double eventPos[2]) override;
  void WidgetInteraction(double newEventPos[2]) override;
  void Highlight(int) override;


  double *GetBounds() VTK_SIZEHINT(6) override;
  void GetActors(vtkPropCollection*) override;
  void ReleaseGraphicsResources(vtkWindow*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;

  vtkMTimeType GetMTime() override;

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

protected:
  vtkSliderRepresentation3D();
  ~vtkSliderRepresentation3D() override;

  // Positioning the widget
  vtkCoordinate *Point1Coordinate;
  vtkCoordinate *Point2Coordinate;
  double        Length;

  // These are the slider end points taking into account the thickness
  // of the slider
  double        SP1[3];
  double        SP2[3];

  // More ivars controlling the appearance of the widget
  double Rotation;
  int    SliderShape;

  // Do the picking
  vtkCellPicker *Picker;

  // Determine the parameter t along the slider
  virtual double ComputePickPosition(double eventPos[2]);

  // The widget consists of several actors, all grouped
  // together using an assembly. This makes it easier to
  // perform the final transformation into
  vtkAssembly *WidgetAssembly;

  // Cylinder used by other objects
  vtkCylinderSource          *CylinderSource;
  vtkTransformPolyDataFilter *Cylinder;

  // The tube
  vtkPolyDataMapper *TubeMapper;
  vtkActor          *TubeActor;
  vtkProperty       *TubeProperty;

  // The slider
  vtkSphereSource   *SliderSource;
  vtkPolyDataMapper *SliderMapper;
  vtkActor          *SliderActor;
  vtkProperty       *SliderProperty;
  vtkProperty       *SelectedProperty;

  // The left cap
  vtkPolyDataMapper *LeftCapMapper;
  vtkActor          *LeftCapActor;
  vtkProperty       *CapProperty;

  // The right cap
  vtkPolyDataMapper *RightCapMapper;
  vtkActor          *RightCapActor;

  // The text. There is an extra transform used to rotate
  // both the title and label
  vtkVectorText     *LabelText;
  vtkPolyDataMapper *LabelMapper;
  vtkActor          *LabelActor;

  vtkVectorText     *TitleText;
  vtkPolyDataMapper *TitleMapper;
  vtkActor          *TitleActor;

  // Transform used during slider motion
  vtkMatrix4x4 *Matrix;
  vtkTransform *Transform;

  // Manage the state of the widget
  enum _SliderShape {
    SphereShape,
    CylinderShape
  };



private:
  vtkSliderRepresentation3D(const vtkSliderRepresentation3D&) = delete;
  void operator=(const vtkSliderRepresentation3D&) = delete;
};

#endif