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# readdsgl

## (Toolbox/readdsgl.m in BrainStorm 2.0 (Alpha))

### Function Synopsis

    NFV=readdsgl(s)

### Help Text

    READDSGL - Loads a BrainSuite .dsgl format tessellation file.
     function NFV=readdsgl(s)
       NFV = READDSGL(FILENAME) loads the file specified by FILENAME string.

     NFV has the following structure:
       NFV.faces    : the face data,
       NFV.vertices : the face data,
       NFV.res      : voxel dimensions [xres yres zres]'
     Examples
       outerskull = readdsgl('outerskull.dsgl');

### Cross-Reference Information

This function is called by

    subject_editor                     C:\BrainStorm_2001\Toolbox\subject_editor.m

### Listing of function C:\BrainStorm_2001\Toolbox\readdsgl.m

    function NFV=readdsgl(s)
    %READDSGL - Loads a BrainSuite .dsgl format tessellation file.
    % function NFV=readdsgl(s)
    %   NFV = READDSGL(FILENAME) loads the file specified by FILENAME string.
    %
    % NFV has the following structure:
    %   NFV.faces    : the face data,
    %   NFV.vertices : the face data,
    %   NFV.res      : voxel dimensions [xres yres zres]'
    % Examples
    %   outerskull = readdsgl('outerskull.dsgl');

    %<autobegin> ---------------------- 26-May-2004 11:34:13 -----------------------
    % --------- Automatically Generated Comments Block Using AUTO_COMMENTS ---------
    %
    % CATEGORY: Data Processing
    %
    % At Check-in: $Author: Mosher $  $Revision: 12 $  $Date: 5/26/04 10:02a $
    %
    % This software is part of BrainStorm Toolbox Version 2.0 (Alpha) 24-May-2004
    %
    % Principal Investigators and Developers:
    % ** Richard M. Leahy, PhD, Signal & Image Processing Institute,
    %    University of Southern California, Los Angeles, CA
    % ** John C. Mosher, PhD, Biophysics Group,
    %    Los Alamos National Laboratory, Los Alamos, NM
    % ** Sylvain Baillet, PhD, Cognitive Neuroscience & Brain Imaging Laboratory,
    %    CNRS, Hopital de la Salpetriere, Paris, France
    %
    % See BrainStorm website at http://neuroimage.usc.edu for further information.
    %
    % Copyright (c) 2004 BrainStorm by the University of Southern California
    % This software distributed  under the terms of the GNU General Public License
    % as published by the Free Software Foundation. Further details on the GPL
    % license can be found at http://www.gnu.org/copyleft/gpl.html .
    %
    % FOR RESEARCH PURPOSES ONLY. THE SOFTWARE IS PROVIDED "AS IS," AND THE
    % UNIVERSITY OF SOUTHERN CALIFORNIA AND ITS COLLABORATORS DO NOT MAKE ANY
    % WARRANTY, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF
    % MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, NOR DO THEY ASSUME ANY
    % LIABILITY OR RESPONSIBILITY FOR THE USE OF THIS SOFTWARE.
    %<autoend> ------------------------ 26-May-2004 11:34:13 -----------------------

    % Author : David Shattuck (shattuck@sipi.usc.edu) 2000
    % 29-May-2002 JCM : inclusion into BrainStorm MMII, some comments, formatting

    fid=fopen(s,'rb','ieee-le');

    if (fid<0),
       error('unable to open file');
    end

    magic1 = ['d' 's' 'g' 'l']';
    magic2 = ['l' 'g' 's' 'd']';
    magic = char(fread(fid,4,'char'));
    if (magic~=magic1)

       if (magic==magic2)

          fclose(fid);
          fid=fopen(s,'rb','ieee-be');

          if (fid<0)
             error('unable to open file');
          end

       end

    end

    NFV.origin = [0 0 0];
    hsize=fread(fid,1,'int32');

    if (hsize>44)
       version=char(fread(fid,8,'char'))';
    end

    ntris=fread(fid,1,'int32');
    nverts=fread(fid,1,'int32');
    nStripPoints=fread(fid,1,'int32');
    NFV.res   = fread(fid,3,'float32');

    if (hsize>44)
       NFV.origin = fread(fid,3,'float');
    end

    r=fseek(fid,hsize,-1);
    if (r~=0)
       error('file is truncated');
    end

    NFV.faces = fread(fid,[3 ntris  ],'int32')';
    NFV.faces = NFV.faces + 1;
    NFV.vertices = fread(fid,[3 nverts ],'float')';

    fclose(fid);

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