Common/vtkBitArray.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkBitArray.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 __vtkBitArray_h
#define __vtkBitArray_h

#include "vtkDataArray.h"

class VTK_COMMON_EXPORT vtkBitArray : public vtkDataArray
{
public:
  static vtkBitArray *New();
  vtkTypeRevisionMacro(vtkBitArray,vtkDataArray);
  void PrintSelf(ostream& os, vtkIndent indent);

  int Allocate(vtkIdType sz, vtkIdType ext=1000);

  void Initialize();

  // satisfy vtkDataArray API
  int GetDataType() {return VTK_BIT;};
  int GetDataTypeSize() { return 0; }
  
  void SetNumberOfTuples(vtkIdType number);

  double *GetTuple(vtkIdType i);

  void GetTuple(vtkIdType i, double * tuple);
  

  void SetTuple(vtkIdType i, const float * tuple);
  void SetTuple(vtkIdType i, const double * tuple);
  

  void InsertTuple(vtkIdType i, const float * tuple);
  void InsertTuple(vtkIdType i, const double * tuple);


  vtkIdType InsertNextTuple(const float * tuple);
  vtkIdType InsertNextTuple(const double * tuple);

  void SetComponent(vtkIdType i, int j, double c);

  void Squeeze();

  virtual void Resize(vtkIdType numTuples);

  int GetValue(vtkIdType id);

  void SetNumberOfValues(vtkIdType number);

  void SetValue(vtkIdType id, int value);


  void InsertValue(vtkIdType id, int i);
  vtkIdType InsertNextValue(int i);

  virtual void InsertComponent(vtkIdType i, int j, double c);

  unsigned char *GetPointer(vtkIdType id) {return this->Array + id/8;}


  unsigned char *WritePointer(vtkIdType id, vtkIdType number);
  void *GetVoidPointer(vtkIdType id)
    {return (void *)this->GetPointer(id);};

  void DeepCopy(vtkDataArray *da);


  void SetArray(unsigned char* array, vtkIdType size, int save);
  void SetVoidArray(void *array, vtkIdType size, int save) 
    {this->SetArray((unsigned char *)array, size, save);};

 
protected:
  vtkBitArray(vtkIdType numComp=1);
  ~vtkBitArray();

  unsigned char *Array;   // pointer to data
  unsigned char *ResizeAndExtend(vtkIdType sz);
    // function to resize data

  int TupleSize; //used for data conversion
  double *Tuple;

  int SaveUserArray;

private:
  // hide superclass' DeepCopy() from the user and the compiler
  void DeepCopy(vtkDataArray &da) {this->vtkDataArray::DeepCopy(&da);}
  
private:
  vtkBitArray(const vtkBitArray&);  // Not implemented.
  void operator=(const vtkBitArray&);  // Not implemented.
};

inline unsigned char *vtkBitArray::WritePointer(vtkIdType id,
                                                vtkIdType number)
{
  vtkIdType newSize=id+number;
  if ( newSize > this->Size )
    {
    this->ResizeAndExtend(newSize);
    }
  if ( (--newSize) > this->MaxId )
    {
    this->MaxId = newSize;
    }
  return this->Array + id/8;
}

inline void vtkBitArray::SetNumberOfValues(vtkIdType number) 
{
  this->Allocate(number);
  this->MaxId = number - 1;
}

inline void vtkBitArray::SetValue(vtkIdType id, int value) 
{
  if (value)
    {
    this->Array[id/8] |= (0x80 >> id%8);
    }
  else
    {
    this->Array[id/8] &= (~(0x80 >> id%8));
    }
}

inline void vtkBitArray::InsertValue(vtkIdType id, int i)
{
  if ( id >= this->Size )
    {
    this->ResizeAndExtend(id+1);
    }
  if (i)
    {
    this->Array[id/8] |= (0x80 >> id%8);
    }
  else
    {
    this->Array[id/8] &= (~(0x80 >> id%8));
    }
  if ( id > this->MaxId )
    {
    this->MaxId = id;
    }
}

inline vtkIdType vtkBitArray::InsertNextValue(int i)
{
  this->InsertValue (++this->MaxId,i); return this->MaxId;
}

inline void vtkBitArray::Squeeze() {this->ResizeAndExtend (this->MaxId+1);}

#endif

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