circle.m

％ ％ set some variables in the workspace to control behaviour: ％ ％ graphicsMode 0 no graphics, ％

function circle(center, rad, ls)

	n = 200;

	th = [0:n]'/n*2*pi;
	x = rad*cos(th);
	y = rad*sin(th);

	plot(x+center(1), y+center(2), ls);