## Copyright (C) 2013   Ming Liu   <u5221472@gmail.com>
##
## 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 3 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, see <http://www.gnu.org/licenses/>.

function xyz = whitepoint(string)
switch string
    case 'a'
        xyz = [1.0985    1.0000    0.3558];
    case 'c'
        xyz = [0.9807    1.0000    1.1823];
    case 'd50'
        xyz = [0.9642    1.0000    0.8251];
    case 'd55'
        xyz = [0.9568    1.0000    0.9214];
    case 'd65'
        xyz = [0.9504    1.0000    1.0889];
    case 'icc'
        xyz = [0.9642    1.0000    0.8249];
    otherwise
        error('string must be one of a, c, icc, d50, d55, d65');
end
end


%XYZ color values of standard illuminants