% Project Eyetracking
% Name: John Doe
% Matrikelnummer: 123456789
clear
close all 

%% Definition of constants
framerate = 60;  % Hz
screen_width = 0.376;  % m
screen_height = 0.301;  % m
screen_resolution_x = 1280;  % pixel
screen_resolution_y = 1024;  % pixel
fixation_x = screen_resolution_x/2;  % position of fixation cross on screen
fixation_y = screen_resolution_y/2;  % position of fixation cross on screen
fixation_marker = 1;  % event marker for fixtion period
movement_marker = 2;  % event marker for free movement period

data_files = [fullfile("..", "data", "1_1.mat"), fullfile("..", "data", "1_5.mat")];
scenes = [fullfile("..", "data", "Genesis_VIII.png"), fullfile("..", "data", "Genesis_XXXIX.png")];

%% Process files
for i = 1:length(data_files)
    file = data_files(i);
    scene = scenes(i);
    
    fprintf("processing: %s\n", file)
    [frame_indices, x, y, event_marker, eye_found] = load_eye_tracking_data(file);
    [x_offset, y_offset] = get_fixation_offset(x, y, event_marker, fixation_marker, fixation_x, fixation_y);
    [true_x, true_y] = correct_eye_positions(x, y, x_offset, y_offset); 
    [true_x, true_y] = fix_eye_lost(true_x, true_y, frame_indices, eye_found);
    time = convert_indices_to_time(frame_indices, framerate);
    
    fig = plot_image_position_overlay(true_x, true_y, time, scene);
    saveas(fig, sprintf("test_%i", i), "pdf")
end