classdef Signalgenerator
    %NAME Summary of this class goes here
    %   Detailed explanation goes here

    properties(Access=public)
        form
        length
        fs
        fsig

    end

    methods (Access=public)
        function obj = Signalgenerator(options)
            %NAME Construct an instance of this class
            %   Detailed explanation goes here

            arguments
                options.form signalform = signalform.sine
                options.length double = 1024
                options.fs double = 1000 %Hz sampling
                options.fsig double = 50 % Hz fundamental frex e.g. of the sine or sawtooth
            end

            % 
            fn = fieldnames(options);
            for n = 1:numel(fn)
                try
                    obj.(fn{n}) = options.(fn{n});
                end
            end

        end

        function signalclass_out = process(obj)

            % actual processing of the signal (steps 1. - 3.)
            signal          = obj.build_signal();
            signalclass_out = Informationsignal(signal,"fs",obj.fs);

            % append to logbook
            lbdesc = ['Signalgenerator: ',char(obj.form), ''];
            signalclass_out  = signalclass_out.logbookentry(lbdesc);

        end

        function signal = build_signal(obj)
            %METHOD1 Summary of this method goes here
            %   Detailed explanation goes here
            arguments(Input)
                obj
            end

            arguments(Output)
                signal double
            end
            
            switch obj.form
                case signalform.sine
                    % Parameters
                    T = 1/obj.fs;         % Sampling period (seconds per sample)
                    L = obj.length;       % Length of signal (number of samples)
                    t = (0:L-1)*T;        % Time vector

                    % Sine wave parameters
                    f = obj.fsig;         % Frequency of the sine wave (Hz)
                    A = 1;                % Amplitude of the sine wave

                    % Generate sine wave
                    signal = A * sin(2*pi*f*t);
                case  signalform.noise
                    
            end
            

          
        end

    end

    methods (Access=private)
    % Cant be seen from outside! So put all your functions here that can/
    % shall not be called from outside


    end
end