def create_sun(setup) :
	canvas, size = setup['canvas'], setup['size']
	d = min([x * 0.08 * 5 * size for x in canvas])
	planet = [ (x - d) / 2  for x in canvas ]
	planet.append(planet[0] + d)
	planet.append(planet[1] + d)
	setup['sun'] = planet
	setup['diam'] = d
	setup['rad'] = d / 2
	setup['center'] = [ planet[0] + d / 2, planet[1] + d / 2 ]