% function [ref] = tristimulus(illuminant, observer)
%

function [ref] = tristimulus(illuminant, observer)

ref = [0.95047 1 1.08883]';

switch observer
    case {'2°'}
        switch illuminant
        case {'A'}
        ref = [1.09850 1 0.35585]';
        case {'C'}
        ref = [0.98074 1 1.18232]';
        case {'D50'}
        ref = [0.96422 1 0.82521]';
        case {'D55'}
        ref = [0.95682 1 0.92149]';
        case {'D65'}
        ref = [0.95047 1 1.08883]';
        case {'D75'}
        ref = [0.94972 1 1.22638]';
        case {'F2'}
        ref = [0.99187 1 0.67395]';
        case {'F7'}
        ref = [0.95044 1 1.08755]';
        case {'F11'}
        ref = [1.00966 1 0.64370]';
        
        case {'Incandescent'}           % same as 'A'
        ref = [1.09850 1 0.35585]';
        case {'Daylight'}               % same as 'D65'
        ref = [0.95047 1 1.08883]';
        case {'Fluorescent'}            % same as 'F2'
        ref = [0.99187 1 0.67395]';
        
        otherwise
        ref = [0.95047 1 1.08883]';
    end;

    case {'10°'}
    switch illuminant
        case {'A'}
        ref = [1.11144 1 0.35200]';
        case {'C'}
        ref = [0.97285 1 1.16145]';
        case {'D50'}
        ref = [0.96720 1 0.81427]';
        case {'D55'}
        ref = [0.95799 1 0.90926]';
        case {'D65'}
        ref = [0.94811 1 1.07304]';
        case {'D75'}
        ref = [0.94416 1 1.20641]';
        case {'F2'}
        ref = [1.03280 1 0.69026]';
        case {'F7'}
        ref = [0.95792 1 1.07687]';
        case {'F11'}
        ref = [1.03866 1 0.65627]';
        
        case {'Incandescent'}           % same as 'A'
        ref = [1.11144 1 0.35200]';
        case {'Daylight'}               % same as 'D65'
        ref = [0.94811 1 1.07304]';
        case {'Fluorescent'}            % same as 'F2'
        ref = [1.03280 1 0.69026]';
        
        otherwise
        ref = [0.94811 1 1.07304]';
    end;
end;