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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPropPicker.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 vtkPropPicker - pick an actor/prop using graphics hardware
// .SECTION Description
// vtkPropPicker is used to pick an actor/prop given a selection
// point (in display coordinates) and a renderer. This class uses
// graphics hardware/rendering system to pick rapidly (as compared
// to using ray casting as does vtkCellPicker and vtkPointPicker).
// This class determines the actor/prop and pick position in world
// coordinates; point and cell ids are not determined.
// .SECTION See Also
// vtkPicker vtkWorldPointPicker vtkCellPicker vtkPointPicker
#ifndef vtkPropPicker_h
#define vtkPropPicker_h
#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkAbstractPropPicker.h"
class vtkProp;
class vtkWorldPointPicker;
class VTKRENDERINGCORE_EXPORT vtkPropPicker : public vtkAbstractPropPicker
{
public:
static vtkPropPicker *New();
vtkTypeMacro(vtkPropPicker, vtkAbstractPropPicker);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Perform the pick and set the PickedProp ivar. If something is picked, a
// 1 is returned, otherwise 0 is returned. Use the GetViewProp() method
// to get the instance of vtkProp that was picked. Props are picked from
// the renderers list of pickable Props.
int PickProp(double selectionX, double selectionY, vtkRenderer *renderer);
// Description:
// Perform a pick from the user-provided list of vtkProps and not from the
// list of vtkProps that the render maintains.
int PickProp(double selectionX, double selectionY, vtkRenderer *renderer,
vtkPropCollection* pickfrom);
// Description:
// Overide superclasses' Pick() method.
int Pick(double selectionX, double selectionY, double selectionZ,
vtkRenderer *renderer);
int Pick(double selectionPt[3], vtkRenderer *renderer)
{ return this->Pick( selectionPt[0],
selectionPt[1], selectionPt[2], renderer); }
protected:
vtkPropPicker();
~vtkPropPicker();
void Initialize();
vtkPropCollection* PickFromProps;
// Used to get x-y-z pick position
vtkWorldPointPicker *WorldPointPicker;
private:
vtkPropPicker(const vtkPropPicker&); // Not implemented.
void operator=(const vtkPropPicker&); // Not implemented.
};
#endif
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