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 triangles(side=100, step=20, n=10):
t = Turtle('triangles')
d = 300
for i in xrange(n):
side += (3*step)
t.polygon(3, side)
t.right(120)
t.pen_up()
t.forward(step)
t.left(120)
t.back(step)
t.pen_down()
t.save()
def squares(max_levels = 15):
t = Turtle('squares')
d = 300
for i in range(max_levels):
for i in range(4):
t.forward(d)
t.right(90)
t.forward(d/4)
t.right(90/5)
d = sqrt((d/4)**2 + (d - d/4)**2)
t.save()
from Turtle import Turtle
import math
dist = 100
golden_ratio = (1 + 5**0.5) / 2
turtle = Turtle('pentagram_rel')
turtle.right(90 / 5)
for i in range(5):
turtle.right(360 / 5)
turtle.forward(dist)
turtle.right(90 + 90 / 5)
for i in range(5):
turtle.right((180 - (360 / 5)) / 3)
if i % 2 == 0:
turtle.forward(dist * golden_ratio)
else:
turtle.back(dist * golden_ratio)
turtle.save()
#################### pentagram absolute
import svgwrite
from math import sin, sqrt, tan, cos, pi
def render(lines):
from Turtle import Turtle
import math
turtle = Turtle('r_polygon')
n = 5
dist = 1000 / n
for i in range(n):
turtle.right(360/n)
turtle.forward(dist)
turtle.save()
from Turtle import Turtle
import math
turtle = Turtle('r_polygon')
n = 5
dist = 1000 / n
for i in range(n):
turtle.right(360 / n)
turtle.forward(dist)
turtle.save()
draw.penDown()
angle = 180 - 360. / (2 * n)
for i in xrange(n):
draw.forward(a)
draw.right(angle)
draw.penUp()
if __name__ == "__main__":
draw = Turtle("test_pictures")
draw.penUp()
draw.setCoord(-50, -50)
draw.forward(100)
draw.right(90)
draw.forward(50)
draw.left(90)
regularPolygon(draw, 100, 5)
draw.resetDir()
draw.right(36)
star(draw, 100 * (sin(108 / 360. * 2 * pi) / sin(36 / 360. * 2 * pi)), 5)
draw.resetDir()
draw.forward(300)
verticies = regularPolygon(draw, 100, 5)
for i, vortex in enumerate(verticies[:3]):
draw.addLine(vortex, verticies[(i + 2) % len(verticies)])