classdef CardiacPhase < Phase
        properties
        FullPhase = Phase;
        SelectedPhase = [];
        SystolePositions = [];
        DiastolePositions = [];
        end
    
    methods %constructor
        function obj=CardiacPhase(Phase)
            if nargin==0;return;end
            % gets properties of superclass
            obj.FullPhase = Phase.Values;
            obj.WorkLoad = Phase.WorkLoad;
            obj.Video = Phase.Video;
        end
%     
%     methods %set methods
% %         function set.ToBeSetByUser(obj,val)
% %             if ~isboolean(val);error('provide a boolean value please');end
% %             obj.ToBeSetByUser=val;
% %         end
%     end
%
        % Choose the correct IMF depending on the work load
        function SelectPhase(obj)
            if strcmp(obj.WorkLoad,'Rest')
                imf_number = 3;
            else if strcmp(obj.WorkLoad,'Exercise')
                    imf_number = 2;
                else if strcmp(obj.WorkLoad,'Continuous Acquisition')
                        imf_number = 3;
                    end
                end
            end
            obj.SelectedPhase = obj.FullPhase(imf_number,:); % Phase corresponding to the cardiac phase
        end
        
        % Detects the frame's positions of diastolic events
        function Diastole(obj)
            max_heart_phase = max(obj.SelectedPhase); % cardiac phase maxima
            treshold_diast = 0.8*max_heart_phase; % diastole treshold 
            index1 = obj.SelectedPhase > treshold_diast; % frames with phase above the diastolic treshold
            indexNumeric1 = find(index1);
            values1 = obj.SelectedPhase(indexNumeric1);
            [ordered_values1 oredered_index1] = sort(values1);
            obj.DiastolePositions = indexNumeric1(oredered_index1); % sorts the frames in ascending cardiac phase
        end
        
        % Detects the frame's positions of systolic events
        function Systole(obj)
            min_heart_phase = min(obj.SelectedPhase); % cardiac phase minima
            treshold_syst = 0.8*min_heart_phase; % systole treshold
            index2 = obj.SelectedPhase < treshold_syst; % frames with phase below the systolic treshold
            indexNumeric2 = find(index2);
            values2 = obj.SelectedPhase(indexNumeric2);
            [ordered_values2 oredered_index2] = sort(values2);
            obj.SystolePositions = indexNumeric2(oredered_index2); % sorts the frames in ascending cardiac phase
        end
    end
            
end