matthiasm@8: %
matthiasm@8: % INTERVAL2DEGREE
matthiasm@8: % 
matthiasm@8: % [degree,success,errormessage] = interval2degree(interval,accidentals,{verbose})
matthiasm@8: % 
matthiasm@8: % Converts an interval and accidental pair to a degree string.
matthiasm@8: % 
matthiasm@8: % Success = 1 if interval converted correctly, 0 otherwise.
matthiasm@8: % 
matthiasm@8: % If optional argument 'verbose' is 1, function prints any errormessage to 
matthiasm@8: % the screen.
matthiasm@8: % 
matthiasm@8: % returns:  degree (string)
matthiasm@8: %           success (boolean)
matthiasm@8: %           errormessage (string)
matthiasm@8: %
matthiasm@8: % Author: Christopher Harte,  August 2005
matthiasm@8: % 
matthiasm@8: % Copyright: Centre for Digital Music, Queen Mary University of London 2005 
matthiasm@8: %
matthiasm@8: % This file is part of the C4DM Chord Toolkit.  
matthiasm@8: %
matthiasm@8: % The C4DM Chord Toolkit is free software; you can redistribute it and/or 
matthiasm@8: % modify it under the terms of the GNU General Public License as published 
matthiasm@8: % by the Free Software Foundation; either version 2 of the License, or
matthiasm@8: % (at your option) any later version.
matthiasm@8: %
matthiasm@8: % The C4DM Chord Toolkit is distributed in the hope that it will be useful,
matthiasm@8: % but WITHOUT ANY WARRANTY; without even the implied warranty of
matthiasm@8: % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
matthiasm@8: % GNU General Public License for more details.
matthiasm@8: %
matthiasm@8: % You should have received a copy of the GNU General Public License
matthiasm@8: % along with the C4DM Toolkit; if not, write to the Free Software
matthiasm@8: % Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
matthiasm@8: 
matthiasm@8: %		
matthiasm@8: function [degree,success,errormessage] = interval2degree(interval,accidentals, verbose)
matthiasm@8: 
matthiasm@8: % set verbose default to 0
matthiasm@8: if nargin < 3
matthiasm@8:     verbose = 0;
matthiasm@8: end
matthiasm@8: 
matthiasm@8: errormessage = '';
matthiasm@8: 
matthiasm@8: 
matthiasm@8: success = 1;
matthiasm@8: degree = '';
matthiasm@8: 
matthiasm@8: 
matthiasm@8: if accidentals >=1
matthiasm@8:    % then the interval is either a natural or has a number of sharps 
matthiasm@8:     if accidentals ~= 0
matthiasm@8:         for index = 1:accidentals 
matthiasm@8:             degree = [degree '#'];
matthiasm@8:         end
matthiasm@8:     end
matthiasm@8:     
matthiasm@8: else
matthiasm@8:     % then the interval has a number of flats
matthiasm@8:     
matthiasm@8:     for index = 1:abs(accidentals) 
matthiasm@8:    
matthiasm@8:         degree = [degree 'b'];
matthiasm@8:     end
matthiasm@8:     
matthiasm@8: end
matthiasm@8: 
matthiasm@8: if isnumeric(interval)
matthiasm@8:     
matthiasm@8:     intervalstring = num2str(interval);
matthiasm@8:     degree = [degree intervalstring];
matthiasm@8:     
matthiasm@8: else
matthiasm@8:    success = 0;
matthiasm@8:    errormessage = 'Error in interval2degree: incorrect interval';
matthiasm@8: end
matthiasm@8:     
matthiasm@8: if (success == 0) && (verbose == 1)   
matthiasm@8:     fprintf(1,errormessage);
matthiasm@8: end  
matthiasm@8: 
matthiasm@8: