def lsystem2drawille(lsystem, n, size, initial_rotation):
def restore():
pos, angl = q.pop()
t.up()
t.move(pos[0], pos[1])
t.rotation = angl
t.down()
def move(pen):
if not pen:
t.up()
t.fd(size)
if not pen:
t.down()
q = []
methods = {
'-': lambda: t.left(lsystem.angle),
'+': lambda: t.right(lsystem.angle),
'[': lambda: q.append(([t.pos_x, t.pos_y], t.rotation)),
']': restore,
}
for v in lsystem.ignore:
methods[v] = lambda: None
t = Turtle()
t.rotation = initial_rotation
for c in lsystem.iterate(n):
try:
methods[c]()
except KeyError:
move(c.isupper())
pass
return t.frame()
def goldenratio2drawille(goldenratio, n, s, angle):
def square(size):
for i in range(4):
t.forward(size)
t.right(goldenratio.angle)
# Taken from python turtle library
def circle(radius, extent=None, steps=None):
fullCircle = 360
if extent is None:
extent = fullCircle
if steps is None:
frac = abs(extent) / fullCircle
steps = 1+int(min(11+abs(radius) / 6.0, 59.0)*frac)
w = 1.0 * extent / steps
w2 = 0.5 * w
l = 2.0 * radius * sin(w2*pi/180.0)
if radius < 0:
l, w, w2 = -l, -w, -w2
t.right(w2)
for i in range(steps):
t.forward(l)
t.right(w)
t.left(w2)
t = Turtle()
size = getTerminalSize()[0] + s
t.rotation = goldenratio.angle + angle
for i in range(n):
square(size)
t.forward(size)
t.right(goldenratio.angle)
t.forward(size)
size /= goldenratio.phi
t.up()
t.move(0, 0)
t.down()
size = getTerminalSize()[0] + s
t.rotation = goldenratio.angle + angle
for i in range(n):
circle(size, 90)
size /= goldenratio.phi
return t.frame()
