PinkWink's Blog

% Initialize Figure
t = 0:0.1:2*pi;
h=figure;
plot(10*cos(t), 10*sin(t), 'g'); grid on; axis square
hold(gca, 'on');
t_m = 0:2*pi/60:2*pi;
plot(10*cos(t_m), 10*sin(t_m), 'go', 'MarkerFaceColor','g', 'MarkerSize',5)
t_h = 0:2*pi/12:2*pi;
plot(10*cos(t_h), 10*sin(t_h), 'ro', 'MarkerFaceColor','r', 'MarkerSize',8)
plot(0, 0, 'go', 'MarkerFaceColor','g', 'MarkerSize',10)
set(gca, 'Xlim', [-11 11], 'Ylim', [-11 11], 'box', 'off', 'XColor', [0.801 0.801 0.801], 'YColor', [0.801 0.801 0.801], 'Color', [0.801 0.801 0.801])

% Initialize Each hand
time = datestr(now);
hour = str2double(time(13:14));
min = str2double(time(16:17));
second_r = str2double(time(19:20));

hour_t = pi/2-2*pi/12*hour-2*pi/12*min/60;
hour_hand = line([0.5*cos(hour_t), 4.5*cos(hour_t)], [0.5*sin(hour_t), 4.5*sin(hour_t)], 'color', 'k','LineWidth',12);
min_t = pi/2-2*pi/60*min;
min_hand = line([0.5*cos(min_t), 8*cos(min_t)], [0.5*sin(min_t), 8*sin(min_t)], 'color', 'k','LineWidth',6);
second_t = pi/2-2*pi/60*second_r;
second_hand = line([0.5*cos(second_t), 9*cos(second_t)], [0.5*sin(second_t), 9*sin(second_t)], 'color', 'b','LineWidth',3);

% Main code
while(1)
    time = datestr(now);
    hour = str2double(time(13:14));
    min = str2double(time(16:17));
    second = str2double(time(19:20));
    
    if second ~= second_r
        % Update time
        updateHour = pi/2-2*pi/12*hour-2*pi/12*min/60;
        updateMin = pi/2-2*pi/60*min;
        updateSec = pi/2-2*pi/60*second;
        
        % Calculate position of each hand
        updateHour_x = [0.5*cos(updateHour), 4.5*cos(updateHour)];
        updateHour_y = [0.5*sin(updateHour), 4.5*sin(updateHour)];
        updateMin_x = [0.5*cos(updateMin), 8*cos(updateMin)];
        updateMin_y = [0.5*sin(updateMin), 8*sin(updateMin)];
        updateSec_x = [0.5*cos(updateSec), 9*cos(updateSec)];
        updateSec_y = [0.5*sin(updateSec), 9*sin(updateSec)];
        
        % Update position of each hand
        set(hour_hand, 'Xdata', updateHour_x, 'Ydata', updateHour_y);
        set(min_hand, 'Xdata', updateMin_x, 'Ydata', updateMin_y);
        set(second_hand, 'Xdata', updateSec_x, 'Ydata', updateSec_y);
        
        drawnow;
        second_r = updateSec;
    end
end