vtkio.h

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/*
 * Author: Steven Ludtke, 04/10/2003 (sludtke@bcm.edu)
 * Copyright (c) 2000-2006 Baylor College of Medicine
 * 
 * This software is issued under a joint BSD/GNU license. You may use the
 * source code in this file under either license. However, note that the
 * complete EMAN2 and SPARX software packages have some GPL dependencies,
 * so you are responsible for compliance with the licenses of these packages
 * if you opt to use BSD licensing. The warranty disclaimer below holds
 * in either instance.
 * 
 * This complete copyright notice must be included in any revised version of the
 * source code. Additional authorship citations may be added, but existing
 * author citations must be preserved.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 * 
 * */
 
#ifndef eman__vtkio_h__
#define eman__vtkio_h__ 1
 
#include "imageio.h"
 
namespace EMAN
{
 
        class VtkIO : public ImageIO
        {
          public:
                explicit VtkIO(const string & fname, IOMode rw_mode = READ_ONLY);
                ~VtkIO();
 
                DEFINE_IMAGEIO_FUNC;
                static bool is_valid(const void *first_block);
 
          private:
                static const char *MAGIC;
 
                enum VtkType
                {
                        VTK_UNKNOWN,
                        VTK_ASCII,
                        VTK_BINARY                      
                };
 
                enum DataType
                {
                        DATATYPE_UNKNOWN,
                        BIT,
                        UNSIGNED_CHAR,
                        CHAR,                   
                        UNSIGNED_SHORT,
                        SHORT,
                        UNSIGNED_INT,
                        INT,
                        UNSIGNED_LONG,
                        LONG,
                        FLOAT,
                        DOUBLE
                };
 
                enum DatasetType
                {
                        DATASET_UNKNOWN,
                        STRUCTURED_POINTS,
                        STRUCTURED_GRID,
                        RECTILINEAR_GRID,
                        UNSTRUCTURED_GRID,
                        POLYDATA
                };
                
                int to_em_datatype(int vtk_datatype);
                int get_mode_size(DataType d);
                
                void read_dataset(DatasetType dstype);
                DataType get_datatype_from_name(const string& datatype_name);
                DatasetType get_datasettype_from_name(const string& dataset_name);
        
                bool is_big_endian;
                bool is_new_file;
 
                DataType datatype;
                VtkType filetype;
                int nx;
                int ny;
                int nz;
                float originx;
                float originy;
                float originz;
                float spacingx;
                float spacingy;
                float spacingz;
                off_t file_offset;
 
        };
 
}
 
#endif  //eman__vtkio_h__