Animation using sine , cosine signal in MATLAB

%Code:

clc

clear all

close all

figure;

axis([-15 15 -5 5]);

pause(2);

t=-5*pi:0.1:5*pi;

x=sin(t)+sin(2*t);

x1=-(sin(t)+sin(2*t));

m=0;

for i=1:length(x)

    a=t(i)+0.5*cos(t);

    b=x(i)+0.5*sin(t);

       fill(a,b,'m');

    axis([-10 10 -5 5]);

    hold on;

    a=t(i)+0.5*cos(t);

    b=x1(i)+0.5*sin(t);

       fill(a,b,'g');

    axis([-15 15 -5 5]);

    hold on;

    pause(0.04);

end