add_default_center_param.m

function add_default_center_param(ROOT)
    if ( ~exist('ROOT','var') )
        ROOT = pwd();
    end
    
    flist = dir(fullfile(ROOT,'*params.json'));
    for i=1:length(flist)
        filepath = fullfile(ROOT,flist(i).name);
        jsonparams = fileread(filepath);
        
        s = jsondecode(jsonparams);
        fieldList = fieldnames(s);
        if ( ~all(ismember({'render','view'}, fieldList)) )
            continue;
        end
        
        if ( ~ismember({'center'},fieldnames(s.view)) )
            s.view = add_center(s.view);
        end
    
        jsonData = Utils.CreateJSON(s, true);
        
%         tok = regexp(flist(i).name, '(.*?)_params\.json', 'once','tokens');
%         movieName = tok{1};
        
%         fid = fopen(fullfile(ROOT,[movieName '_params.json']), 'wt');
        fid = fopen(filepath,'wt');
        fprintf(fid, '%s\n', jsonData);
        fclose(fid);
    end
end


function newview = add_center(view)
    newview = view;
    newview.center = [0.0;0.0;0.0];
    
    newview = orderfields(newview, {'zoom','pos','center','worldRot','bClip','clipPlane'});
end