vtkAttributesErrorMetric.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkAttributesErrorMetric.h,v $

  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 __vtkAttributesErrorMetric_h
#define __vtkAttributesErrorMetric_h

#include "vtkGenericSubdivisionErrorMetric.h"

class vtkGenericAttributeCollection;
class vtkGenericDataSet;

class VTK_FILTERING_EXPORT vtkAttributesErrorMetric : public vtkGenericSubdivisionErrorMetric
{
public:
  static vtkAttributesErrorMetric *New();
  

  vtkTypeRevisionMacro(vtkAttributesErrorMetric,vtkGenericSubdivisionErrorMetric);
  void PrintSelf(ostream& os, vtkIndent indent);
  

  vtkGetMacro(AbsoluteAttributeTolerance, double);
  
  void SetAbsoluteAttributeTolerance(double value);
  

  vtkGetMacro(AttributeTolerance, double);
  
  void SetAttributeTolerance(double value);


  int RequiresEdgeSubdivision(double *leftPoint, double *midPoint, double *rightPoint,
                              double alpha);
  

  double GetError(double *leftPoint, double *midPoint,
                  double *rightPoint, double alpha);
  
protected:
  vtkAttributesErrorMetric();
  virtual ~vtkAttributesErrorMetric();
  
  void ComputeSquareAbsoluteAttributeTolerance();
  
  double AttributeTolerance;
  
  double SquareAbsoluteAttributeTolerance; // cached value computed from
  // AttributeTolerance and active attribute/component
  
  double AbsoluteAttributeTolerance;
  int DefinedByAbsolute;
  
  vtkTimeStamp SquareAbsoluteAttributeToleranceComputeTime;
  
  double Range; // cached value computed from active attribute/component
  
  vtkGenericAttributeCollection *AttributeCollection;

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

#endif

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