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/*=========================================================================
Program: Visualization Toolkit
Module: vtkParallelopipedWidget.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.
=========================================================================*/
// .NAME vtkParallelopipedWidget - a widget to manipulate 3D parallelopipeds
//
// .SECTION Description
// This widget was designed with the aim of visualizing / probing cuts on
// a skewed image data / structured grid.
//
// .SECTION Interaction
// The widget allows you to create a parallelopiped (defined by 8 handles).
// The widget is initially placed by using the "PlaceWidget" method in the
// representation class. After the widget has been created, the following
// interactions may be used to manipulate it :
// 1) Click on a handle and drag it around moves the handle in space, while
// keeping the same axis alignment of the parallelopiped
// 2) Dragging a handle with the shift button pressed resizes the piped
// along an axis.
// 3) Control-click on a handle creates a chair at that position. (A chair
// is a depression in the piped that allows you to visualize cuts in the
// volume).
// 4) Clicking on a chair and dragging it around moves the chair within the
// piped.
// 5) Shift-click on the piped enables you to translate it.
//
// .SECTION Caveats
// .SECTION See Also vtkParallelopipedRepresentation
#ifndef __vtkParallelopipedWidget_h
#define __vtkParallelopipedWidget_h
#include "vtkAbstractWidget.h"
class vtkParallelopipedRepresentation;
class vtkHandleWidget;
class vtkWidgetSet;
class VTK_WIDGETS_EXPORT vtkParallelopipedWidget : public vtkAbstractWidget
{
//BTX
friend class vtkWidgetSet;
//ETX
public:
// Description:
// Instantiate the object.
static vtkParallelopipedWidget *New();
vtkTypeMacro(vtkParallelopipedWidget,vtkAbstractWidget);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Override the superclass method. This is a composite widget, (it internally
// consists of handle widgets). We will override the superclass method, so
// that we can pass the enabled state to the internal widgets as well.
virtual void SetEnabled(int);
// Description:
// Specify an instance of vtkWidgetRepresentation used to represent this
// widget in the scene. Note that the representation is a subclass of vtkProp
// so it can be added to the renderer independent of the widget.
void SetRepresentation(vtkParallelopipedRepresentation *r)
{
this->Superclass::SetWidgetRepresentation(
reinterpret_cast<vtkWidgetRepresentation*>(r));
}
// Description:
// Enable/disable the creation of a chair on this widget. If off,
// chairs cannot be created.
vtkSetMacro(EnableChairCreation,int);
vtkGetMacro(EnableChairCreation,int);
vtkBooleanMacro(EnableChairCreation,int);
// Description:
// Create the default widget representation if one is not set.
void CreateDefaultRepresentation();
// Description:
// Methods to change the whether the widget responds to interaction.
// Overridden to pass the state to component widgets.
virtual void SetProcessEvents(int);
protected:
vtkParallelopipedWidget();
~vtkParallelopipedWidget();
static void RequestResizeCallback (vtkAbstractWidget* );
static void RequestResizeAlongAnAxisCallback (vtkAbstractWidget* );
static void RequestChairModeCallback (vtkAbstractWidget* );
static void TranslateCallback (vtkAbstractWidget* );
static void OnMouseMoveCallback (vtkAbstractWidget* );
static void OnLeftButtonUpCallback (vtkAbstractWidget* );
// Control whether chairs can be created
int EnableChairCreation;
// Description:
void BeginTranslateAction ( vtkParallelopipedWidget *dispatcher);
void TranslateAction ( vtkParallelopipedWidget *dispatcher);
// helper methods for cursor management
void SetCursor(int state);
// To break reference count loops
virtual void ReportReferences(vtkGarbageCollector* collector);
// The positioning handle widgets
vtkHandleWidget **HandleWidgets;
//BTX
// Description:
// Events invoked by this widget
enum WidgetEventIds
{
RequestResizeEvent = 10000,
RequestResizeAlongAnAxisEvent,
RequestChairModeEvent
};
//ETX
vtkWidgetSet* WidgetSet;
private:
vtkParallelopipedWidget(const vtkParallelopipedWidget&); //Not implemented
void operator=(const vtkParallelopipedWidget&); //Not implemented
};
#endif