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64 lines
2.0 KiB
64 lines
2.0 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkPointPicker.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 vtkPointPicker - select a point by shooting a ray into a graphics window
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// .SECTION Description
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// vtkPointPicker is used to select a point by shooting a ray into a graphics
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// window and intersecting with actor's defining geometry - specifically its
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// points. Beside returning coordinates, actor, and mapper, vtkPointPicker
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// returns the id of the point projecting closest onto the ray (within the
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// specified tolerance). Ties are broken (i.e., multiple points all
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// projecting within the tolerance along the pick ray) by choosing the point
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// closest to the ray.
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//
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// .SECTION See Also
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// vtkPicker vtkCellPicker.
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#ifndef __vtkPointPicker_h
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#define __vtkPointPicker_h
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#include "vtkPicker.h"
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class VTK_RENDERING_EXPORT vtkPointPicker : public vtkPicker
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{
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public:
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static vtkPointPicker *New();
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vtkTypeRevisionMacro(vtkPointPicker,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 point. If PointId = -1, nothing was picked.
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vtkGetMacro(PointId, vtkIdType);
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protected:
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vtkPointPicker();
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~vtkPointPicker() {};
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vtkIdType PointId; //picked point
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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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vtkPointPicker(const vtkPointPicker&); // Not implemented.
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void operator=(const vtkPointPicker&); // Not implemented.
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};
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#endif
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