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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 for details.
This software is distributed WITHOUT ANY WARRANTY; without even
PURPOSE. See the above copyright notice for more information.
// .NAME vtkRectilinearWipeRepresentation - represent a vtkRectilinearWipeWidget
// .SECTION Description
// This class is used to represent and render a vtkRectilinearWipeWidget. To
// use this class, you need to specify an instance of a
// vtkImageRectilinearWipe and vtkImageActor. This provides the information
// for this representation to construct and place itself.
// The class may be subclassed so that alternative representations can
// be created. The class defines an API and a default implementation that
// the vtkRectilinearWipeWidget interacts with to render itself in the scene.
// .SECTION Caveats
// The separation of the widget event handling and representation enables
// users and developers to create new appearances for the widget. It also
// facilitates parallel processing, where the client application handles
// events, and remote representations of the widget are slaves to the
// client (and do not handle events).
// .SECTION See Also
// vtkRectilinearWipeWidget vtkWidgetRepresentation vtkAbstractWidget
#ifndef __vtkRectilinearWipeRepresentation_h
#define __vtkRectilinearWipeRepresentation_h
#include "vtkWidgetRepresentation.h"
class vtkImageRectilinearWipe;
class vtkImageActor;
class vtkPoints;
class vtkCellArray;
class vtkPolyData;
class vtkProperty2D;
class vtkPolyDataMapper2D;
class vtkActor2D;
class VTK_WIDGETS_EXPORT vtkRectilinearWipeRepresentation : public vtkWidgetRepresentation
// Description:
// Instantiate this class.
static vtkRectilinearWipeRepresentation *New();
// Description:
// Standard methods for instances of this class.
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Specify an instance of vtkImageRectilinearWipe to manipulate.
void SetRectilinearWipe(vtkImageRectilinearWipe *wipe);
// Description:
// Specify an instance of vtkImageActor to decorate.
void SetImageActor(vtkImageActor *imageActor);
// Description:
// The tolerance representing the distance to the widget (in pixels)
// in which the cursor is considered to be on the widget, or on a
// widget feature (e.g., a corner point or edge).
// Description:
// Get the properties for the widget. This can be manipulated to set
// different colors, line widths, etc.
// Description:
// Subclasses of vtkRectilinearWipeRepresentation must implement these methods. These
// are the methods that the widget and its representation use to
// communicate with each other.
virtual void BuildRepresentation();
virtual void StartWidgetInteraction(double eventPos[2]);
virtual void WidgetInteraction(double eventPos[2]);
virtual int ComputeInteractionState(int X, int Y, int modify=0);
// Enums define the state of the prop relative to the mouse pointer
// position. Used by ComputeInteractionState() to communicate with the
// widget.
enum _InteractionState
// Description:
// Methods to make this class behave as a vtkProp.
virtual void GetActors2D(vtkPropCollection *);
virtual void ReleaseGraphicsResources(vtkWindow *);
virtual int RenderOverlay(vtkViewport *viewport);
virtual int RenderOpaqueGeometry(vtkViewport *viewport);
virtual int RenderTranslucentPolygonalGeometry(vtkViewport *viewport);
virtual int HasTranslucentPolygonalGeometry();
// 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;
vtkRectilinearWipeRepresentation(const vtkRectilinearWipeRepresentation&); //Not implemented
void operator=(const vtkRectilinearWipeRepresentation&); //Not implemented