Servers/Filters/vtkSubdivisionAlgorithm.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkSubdivisionAlgorithm.h,v $
  Language:  C++

  Copyright 2003 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
  license for use of this work by or on behalf of the
  U.S. Government. Redistribution and use in source and binary forms, with
  or without modification, are permitted provided that this Notice and any
  statement of authorship are reproduced on all copies.

=========================================================================*/
#ifndef __vtkSubdivisionAlgorithm_h
#define __vtkSubdivisionAlgorithm_h

#include "vtkObject.h"

class vtkDataSetAttributes;
class vtkMatrix4x4;
class vtkStreamingTessellator;

class VTK_EXPORT vtkSubdivisionAlgorithm : public vtkObject
{
  public:
    vtkTypeRevisionMacro(vtkSubdivisionAlgorithm,vtkObject);
    virtual void PrintSelf( ostream& os, vtkIndent indent );

    virtual bool EvaluateEdge( const double* p0, double* p1, const double* p2, int field_start ) = 0 ;

    virtual int PassField( int sourceId, int sourceSize, vtkStreamingTessellator* t );

    virtual void ResetFieldList();

    virtual bool DontPassField( int sourceId, vtkStreamingTessellator* t );

    const int* GetFieldIds() const;

    const int* GetFieldOffsets() const;

    int GetOutputField( int fieldId ) const;

    int GetNumberOfFields() const;

  protected:
    vtkSubdivisionAlgorithm();
    virtual ~vtkSubdivisionAlgorithm();

    int* FieldIds;
    int* FieldOffsets;
    int  NumberOfFields;

    bool ViewDependentEval( const double* p0, double* p1, double* p1_actual, const double* p2, int field_start, vtkMatrix4x4* viewtrans, const double* pixelSize, double allowableChordErr ) const;

    bool FixedFieldErrorEval( const double* p0, double* p1, double* p1_actual, const double* p2, int field_start, int field_criteria, double* allowableFieldErr ) const;

  private:
    vtkSubdivisionAlgorithm( const vtkSubdivisionAlgorithm& ); // Not implemented.
    void operator = ( const vtkSubdivisionAlgorithm& ); // Not implemented.
};

//BTX

inline const int* vtkSubdivisionAlgorithm::GetFieldIds() const { return this->FieldIds; }
inline const int* vtkSubdivisionAlgorithm::GetFieldOffsets() const { return this->FieldOffsets; }
inline int vtkSubdivisionAlgorithm::GetNumberOfFields() const { return this->NumberOfFields; }

//ETX

#endif // __vtkSubdivisionAlgorithm_h

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