slice3.cpp

VTK入门样例(种类齐全)

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: TestCompress.cxx,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.

=========================================================================*/
// .NAME Test of vtkZLibDataCompressor
// .SECTION Description
//

#include "vtkZLibDataCompressor.h"
#include "vtkOutputWindow.h"
#include "vtkObjectFactory.h"


int main(int argc, char *argv[])
{
  int res = 1;
  const unsigned int start_size = 100024;
  unsigned int cc; 
  unsigned char buffer[start_size];
  unsigned char* cbuffer;
  unsigned char* ucbuffer;
  unsigned long nlen;
  unsigned long rlen;

  vtkZLibDataCompressor* compressor = vtkZLibDataCompressor::New();
  for ( cc = 0; cc < start_size; cc ++ )
    {
    buffer[cc] = cc % sizeof(unsigned char);
    }
  buffer[0] = 'v';
  buffer[1] = 't';
  buffer[2] = 'k';

  nlen = compressor->GetMaximumCompressionSpace(start_size);
  cbuffer = new unsigned char[ nlen ];
  rlen = compressor->Compress(buffer, start_size, cbuffer, nlen);
  if ( rlen > 0 )
    {
    ucbuffer = new unsigned char[ start_size ];
    rlen = compressor->Uncompress(cbuffer, rlen, ucbuffer, start_size);
    if ( rlen == start_size )
      {
      cout << argv[0] << " Works " << argc << endl;
      cout << ucbuffer[0] << ucbuffer[1] << ucbuffer[2] << endl;
      res = 0;
      }
    delete [] ucbuffer;
    }
  delete [] cbuffer;
  
  compressor->Delete();
  return res;
}