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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPVRayCastPickingHelper.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 vtkPVRayCastPickingHelper
* @brief helper class that used selection and ray
* casting to find the intersection point between the user picking point
* and the concreate cell underneath.
*/
#ifndef vtkPVRayCastPickingHelper_h
#define vtkPVRayCastPickingHelper_h
#include "vtkObject.h"
#include "vtkPVClientServerCoreRenderingModule.h" //needed for exports
class vtkAlgorithm;
class vtkDataSet;
class VTKPVCLIENTSERVERCORERENDERING_EXPORT vtkPVRayCastPickingHelper : public vtkObject
{
public:
static vtkPVRayCastPickingHelper* New();
vtkTypeMacro(vtkPVRayCastPickingHelper, vtkObject);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
/**
* Set input on which the selection apply
*/
void SetInput(vtkAlgorithm*);
/**
* Set the selection that extract the cell that intersect the ray
*/
void SetSelection(vtkAlgorithm*);
//@{
/**
* Set the point 1 that compose the ray
*/
vtkSetVector3Macro(PointA, double);
vtkGetVector3Macro(PointA, double);
//@}
//@{
/**
* Set the point 2 that compose the ray
*/
vtkSetVector3Macro(PointB, double);
vtkGetVector3Macro(PointB, double);
//@}
//@{
/**
* Set the flag to use directly selected points on mesh as intersection
*/
vtkSetMacro(SnapOnMeshPoint, bool);
vtkGetMacro(SnapOnMeshPoint, bool);
//@}
/**
* Compute the intersection
*/
void ComputeIntersection();
// Descritpion:
// Provide access to the resulting intersection
vtkGetVector3Macro(Intersection, double);
protected:
vtkPVRayCastPickingHelper();
~vtkPVRayCastPickingHelper();
/**
* Compute the intersection using provided dataset
*/
void ComputeIntersectionFromDataSet(vtkDataSet* ds);
double Intersection[3];
double PointA[3];
double PointB[3];
bool SnapOnMeshPoint;
vtkAlgorithm* Input;
vtkAlgorithm* Selection;
private:
vtkPVRayCastPickingHelper(const vtkPVRayCastPickingHelper&) VTK_DELETE_FUNCTION;
void operator=(const vtkPVRayCastPickingHelper&) VTK_DELETE_FUNCTION;
};
#endif
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