vtkPolygonalSurfaceContourLineInterpolator.h

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

  Program:   Visualization Toolkit
  Module:    vtkPolygonalSurfaceContourLineInterpolator.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 vtkPolygonalSurfaceContourLineInterpolator_h
#define vtkPolygonalSurfaceContourLineInterpolator_h

#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkPolyDataContourLineInterpolator.h"

class vtkDijkstraGraphGeodesicPath;
class vtkIdList;

class VTKINTERACTIONWIDGETS_EXPORT vtkPolygonalSurfaceContourLineInterpolator : public vtkPolyDataContourLineInterpolator
{
public:

  vtkTypeMacro(vtkPolygonalSurfaceContourLineInterpolator, vtkPolyDataContourLineInterpolator);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkPolygonalSurfaceContourLineInterpolator *New();

  int InterpolateLine( vtkRenderer *ren,
                               vtkContourRepresentation *rep,
                               int idx1, int idx2 ) override;

  int UpdateNode( vtkRenderer *,
                          vtkContourRepresentation *,
                          double * vtkNotUsed(node), int vtkNotUsed(idx) ) override;


  vtkSetMacro( DistanceOffset, double );
  vtkGetMacro( DistanceOffset, double );

  void GetContourPointIds( vtkContourRepresentation *rep, vtkIdList *idList );

protected:
  vtkPolygonalSurfaceContourLineInterpolator();
  ~vtkPolygonalSurfaceContourLineInterpolator() override;

  double         DistanceOffset;

private:
  vtkPolygonalSurfaceContourLineInterpolator(const vtkPolygonalSurfaceContourLineInterpolator&) = delete;
  void operator=(const vtkPolygonalSurfaceContourLineInterpolator&) = delete;

  // Cache the last used vertex id's (start and end).
  // If they are the same, don't recompute.
  vtkIdType      LastInterpolatedVertexIds[2];

  vtkDijkstraGraphGeodesicPath* DijkstraGraphGeodesicPath;
};

#endif