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76 lines
2.3 KiB
76 lines
2.3 KiB
2 years ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkCellPicker.h,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkCellPicker - select a cell by shooting a ray into graphics window
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// .SECTION Description
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// vtkCellPicker is used to select a cell by shooting a ray into graphics
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// window and intersecting with actor's defining geometry - specifically
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// its cells. Beside returning coordinates, actor and mapper, vtkCellPicker
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// returns the id of the closest cell within the tolerance along the pick
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// ray, and the dataset that was picked.
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// .SECTION See Also
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// vtkPicker vtkPointPicker
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#ifndef __vtkCellPicker_h
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#define __vtkCellPicker_h
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#include "vtkPicker.h"
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class vtkGenericCell;
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class VTK_RENDERING_EXPORT vtkCellPicker : public vtkPicker
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{
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public:
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static vtkCellPicker *New();
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vtkTypeRevisionMacro(vtkCellPicker,vtkPicker);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Get the id of the picked cell. If CellId = -1, nothing was picked.
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vtkGetMacro(CellId, vtkIdType);
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// Description:
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// Get the subId of the picked cell. If SubId = -1, nothing was picked.
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vtkGetMacro(SubId, int);
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// Description:
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// Get the parametric coordinates of the picked cell. Only valid if
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// pick was made.
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vtkGetVectorMacro(PCoords, double,3);
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protected:
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vtkCellPicker();
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~vtkCellPicker();
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vtkIdType CellId; // picked cell
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int SubId; // picked cell subId
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double PCoords[3]; // picked cell parametric coordinates
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virtual double IntersectWithLine(double p1[3], double p2[3], double tol,
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vtkAssemblyPath *path, vtkProp3D *p,
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vtkAbstractMapper3D *m);
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void Initialize();
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private:
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vtkGenericCell *Cell; //used to accelerate picking
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private:
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vtkCellPicker(const vtkCellPicker&); // Not implemented.
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void operator=(const vtkCellPicker&); // Not implemented.
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};
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#endif
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