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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTensorProbeWidget.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.
=========================================================================*/
/**
* @class vtkTensorProbeWidget
* @brief a widget to probe tensors on a polyline
*
* The class is used to probe tensors on a trajectory. The representation
* (vtkTensorProbeRepresentation) is free to choose its own method of
* rendering the tensors. For instance vtkEllipsoidTensorProbeRepresentation
* renders the tensors as ellipsoids. The interactions of the widget are
* controlled by the left mouse button. A left click on the tensor selects
* it. It can dragged around the trajectory to probe the tensors on it.
*
* For instance dragging the ellipsoid around with
* vtkEllipsoidTensorProbeRepresentation will manifest itself with the
* ellipsoid shape changing as needed along the trajectory.
*/
#ifndef vtkTensorProbeWidget_h
#define vtkTensorProbeWidget_h
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkAbstractWidget.h"
class vtkTensorProbeRepresentation;
class vtkPolyData;
class VTKINTERACTIONWIDGETS_EXPORT vtkTensorProbeWidget : public vtkAbstractWidget
{
public:
/**
* Instantiate this class.
*/
static vtkTensorProbeWidget *New();
//@{
/**
* Standard VTK class macros.
*/
vtkTypeMacro(vtkTensorProbeWidget, vtkAbstractWidget);
void PrintSelf(ostream& os, vtkIndent indent);
//@}
/**
* 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(vtkTensorProbeRepresentation *r)
{
this->Superclass::SetWidgetRepresentation(
reinterpret_cast<vtkWidgetRepresentation*>(r));
}
/**
* Return the representation as a vtkTensorProbeRepresentation.
*/
vtkTensorProbeRepresentation *GetTensorProbeRepresentation()
{return reinterpret_cast<vtkTensorProbeRepresentation*>(this->WidgetRep);}
/**
* See vtkWidgetRepresentation for details.
*/
virtual void CreateDefaultRepresentation();
protected:
vtkTensorProbeWidget();
~vtkTensorProbeWidget();
// 1 when the probe has been selected, for instance when dragging it around
int Selected;
int LastEventPosition[2];
// Callback interface to capture events and respond
static void SelectAction (vtkAbstractWidget*);
static void MoveAction (vtkAbstractWidget*);
static void EndSelectAction (vtkAbstractWidget*);
private:
vtkTensorProbeWidget(
const vtkTensorProbeWidget&) VTK_DELETE_FUNCTION;
void operator=(const vtkTensorProbeWidget&) VTK_DELETE_FUNCTION;
};
#endif
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