dox/Widgets/vtkClosedSurfacePointPlacer.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkClosedSurfacePointPlacer.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.

=========================================================================*/
#ifndef __vtkClosedSurfacePointPlacer_h
#define __vtkClosedSurfacePointPlacer_h

#include "vtkPointPlacer.h"

class vtkPlane;
class vtkPlaneCollection;
class vtkPlanes;
class vtkRenderer;

class VTK_WIDGETS_EXPORT vtkClosedSurfacePointPlacer : public vtkPointPlacer
{
public:
  static vtkClosedSurfacePointPlacer *New();


  vtkTypeMacro(vtkClosedSurfacePointPlacer,vtkPointPlacer);
  void PrintSelf(ostream& os, vtkIndent indent);


  void AddBoundingPlane(vtkPlane *plane);
  void RemoveBoundingPlane(vtkPlane *plane);
  void RemoveAllBoundingPlanes();
  virtual void SetBoundingPlanes(vtkPlaneCollection*);
  vtkGetObjectMacro(BoundingPlanes,vtkPlaneCollection);
  void SetBoundingPlanes(vtkPlanes *planes);


  int ComputeWorldPosition( vtkRenderer *ren,
                            double displayPos[2], 
                            double worldPos[3],
                            double worldOrient[9] );
  

  int ComputeWorldPosition( vtkRenderer *ren,
                            double displayPos[2], 
                            double refWorldPos[2],
                            double worldPos[3],
                            double worldOrient[9] );
  
  int ValidateWorldPosition( double worldPos[3] );
  
  // Descrption:
  // Orientationation is ignored, and the above method
  // is called instead.
  int ValidateWorldPosition( double worldPos[3],
                             double worldOrient[9]);

  // Descrption:
  // The minimum distance the object should be from the faces of the object.
  // Must be greater than 0. Default is 0.
  vtkSetClampMacro( MinimumDistance, double, 0.0, VTK_DOUBLE_MAX );
  vtkGetMacro( MinimumDistance, double );
  
protected:
  vtkClosedSurfacePointPlacer();
  ~vtkClosedSurfacePointPlacer();

  // A collection of planes used to bound the projection
  // plane
  vtkPlaneCollection *BoundingPlanes;

  // Calculate the distance of a point from the Object. Negative 
  // values imply that the point is outside. Positive values imply that it is
  // inside. The closest point to the object is returned in closestPt. 
  static double GetDistanceFromObject( double               pos[3],
                                       vtkPlaneCollection * pc,
                                       double               closestPt[3]);

  void BuildPlanes();

  double               MinimumDistance;
  vtkPlaneCollection * InnerBoundingPlanes;
  
private:
  vtkClosedSurfacePointPlacer(const vtkClosedSurfacePointPlacer&);  //Not implemented
  void operator=(const vtkClosedSurfacePointPlacer&);  //Not implemented
};

#endif