vtkRectilinearWipeRepresentation.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkRectilinearWipeRepresentation.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 vtkRectilinearWipeRepresentation_h
#define vtkRectilinearWipeRepresentation_h
 
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkWidgetRepresentation.h"
 
class vtkImageRectilinearWipe;
class vtkImageActor;
class vtkPoints;
class vtkCellArray;
class vtkPolyData;
class vtkProperty2D;
class vtkPolyDataMapper2D;
class vtkActor2D;
 
class VTKINTERACTIONWIDGETS_EXPORT vtkRectilinearWipeRepresentation : public vtkWidgetRepresentation
{
public:
  static vtkRectilinearWipeRepresentation* New();
 
 
  vtkTypeMacro(vtkRectilinearWipeRepresentation, vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  void SetRectilinearWipe(vtkImageRectilinearWipe* wipe);
  vtkGetObjectMacro(RectilinearWipe, vtkImageRectilinearWipe);
 
 
  void SetImageActor(vtkImageActor* imageActor);
  vtkGetObjectMacro(ImageActor, vtkImageActor);
 
 
  vtkSetClampMacro(Tolerance, int, 1, 10);
  vtkGetMacro(Tolerance, int);
 
 
  vtkGetObjectMacro(Property, vtkProperty2D);
 
 
  void BuildRepresentation() override;
  void StartWidgetInteraction(double eventPos[2]) override;
  void WidgetInteraction(double eventPos[2]) override;
  int ComputeInteractionState(int X, int Y, int modify = 0) override;
 
  // Enums define the state of the prop relative to the mouse pointer
  // position. Used by ComputeInteractionState() to communicate with the
  // widget.
  enum _InteractionState
  {
    Outside = 0,
    MovingHPane,
    MovingVPane,
    MovingCenter
  };
 
 
  void GetActors2D(vtkPropCollection*) override;
  void ReleaseGraphicsResources(vtkWindow*) override;
  int RenderOverlay(vtkViewport* viewport) override;
  int RenderOpaqueGeometry(vtkViewport* viewport) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport* viewport) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;
 
protected:
  vtkRectilinearWipeRepresentation();
  ~vtkRectilinearWipeRepresentation() override;
 
  // Instances that this class manipulates
  vtkImageRectilinearWipe* RectilinearWipe;
  vtkImageActor* ImageActor;
 
  // The pick tolerance of the widget in pixels
  int Tolerance;
 
  // This is used to track the beginning of interaction with the prop
  double StartWipePosition[2];
 
  // Indicates which part of widget is currently active based on the
  // state of the instance of the vtkImageRectilinearWipe.
  int ActiveParts;
 
  // Geometric structure of widget
  vtkPoints* Points;   // The nine points defining the widget geometry
  vtkCellArray* Lines; // lines defining the boundary
  vtkPolyData* Wipe;
  vtkPolyDataMapper2D* WipeMapper;
  vtkActor2D* WipeActor;
  vtkProperty2D* Property;
 
  // These are used to track the coordinates (in display coordinate system)
  // of the mid-edge and center point of the widget
  double DP4[3];
  double DP5[3];
  double DP6[3];
  double DP7[3];
  double DP8[3];
 
  int Dims[3]; // Dimensions of the input image to the wipe
  int I;       // the i-j define the plane that is being displayed
  int J;
 
private:
  vtkRectilinearWipeRepresentation(const vtkRectilinearWipeRepresentation&) = delete;
  void operator=(const vtkRectilinearWipeRepresentation&) = delete;
};
 
#endif