how to draw a irregular shape ?

help me drawing a ir regular shape

Answer 1

[Star Strider]

Here is one way:

N= 12;                                  % Number Of Sides To Polygon
a = sort(rand(N,1))*2*pi;
r = randi(9, N, 1);
x = cos(a).*r;
y = sin(a).*r;

figure(1)
plot([x; x(1)], [y; y(1)])

This creates a randomly-shaped polygon. Change it to produce the sort of shape you want.

Answer 2

[Image Analyst]

Try imfreehand(). See attached demos.