def interpret_Lsytem(path, forward=7, angle=60, filename='', ignore = None):
"""
@param turtle The turtle to guide
@param dist Distance to be made with each 'forward'
@param angle Angle for 'left' and 'right'
"""
turtle = Turtle(filename)
turtle.left(180)
if ignore == None: ignore = []
stack = []
for c in path:
if c == '+':
turtle.right(angle)
elif c == '-':
turtle.left(angle)
elif c == '[':
stack.append(turtle.serialize())
elif c == ']':
turtle.deserialize(stack.pop())
elif c not in ignore:
turtle.forward(forward)
if filename:
turtle.save()
return
def interpret_Lsytem2(path, forward=7, angle=60, filename=''):
# goes through the path and draws
turtle = Turtle(filename)
turtle.left(90)
states = []
instr = { 'A' : ['forward', forward],
'F' : ['forward', forward],
'B' : ['forward', forward],
'x' : ['forward', 0],
'y' : ['forward', 0],
'-' : ['left', angle],
'+' : ['right', angle]}
for step in path:
if step == '[':
states.append(turtle.serialize())
elif step == ']':
#state = states.pop()
turtle.deserialize(states.pop())
else:
getattr(turtle, instr[step][0])( instr[step][1])
if filename:
turtle.save()
return
