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common/vtkBitArray.h

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

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


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
#ifndef __vtkBitArray_h
#define __vtkBitArray_h

#include "vtkDataArray.h"

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

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

  void Initialize();

  // satisfy vtkDataArray API
  vtkDataArray *MakeObject();
  int GetDataType() {return VTK_BIT;};
  
  void SetNumberOfTuples(const int number);

  float *GetTuple(const int i);

  void GetTuple(const int i, float * tuple);
  void GetTuple(const int i, double * tuple);
  
  void SetTuple(const int i, const float * tuple);
  void SetTuple(const int i, const double * tuple);
  
  void InsertTuple(const int i, const float * tuple);
  void InsertTuple(const int i, const double * tuple);

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

  void Squeeze();

  int GetValue(const int id);

  void SetNumberOfValues(const int number);

  void SetValue(const int id, const int value);

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

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

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

  void DeepCopy(vtkDataArray *da);

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

#ifndef VTK_REMOVE_LEGACY_CODE

  void DeepCopy(vtkBitArray &da) 
    {VTK_LEGACY_METHOD(DeepCopy,"3.2"); this->DeepCopy(&da);}
#endif
  
protected:
  vtkBitArray(int numComp=1);
  ~vtkBitArray();
  vtkBitArray(const vtkBitArray&) {};
  void operator=(const vtkBitArray&) {};

  unsigned char *Array;   // pointer to data
  unsigned char *Resize(const int sz);  // function to resize data

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

  int SaveUserArray;

private:
  // hide superclass' DeepCopy() from the user and the compiler
  void DeepCopy(vtkDataArray &da) {this->vtkDataArray::DeepCopy(&da);}
  
};

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

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

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

inline void vtkBitArray::InsertValue(const int id, const int i)
{
  if ( id >= this->Size )
    {
    this->Resize(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 int vtkBitArray::InsertNextValue(const int i)
{
  this->InsertValue (++this->MaxId,i); return this->MaxId;
}

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

#endif

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