Python turtle module confusion
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by John
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Published on 2010-05-08T16:02:20Z
Indexed on
2010/05/08
16:08 UTC
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Hi, I'm trying to to add more lines to the triangle, so instead of 3 leading off there will be 5 depending on the parameter given but I really have no idea what to do at this stage and any help would be very welcome. Thanks in advance!:)
def draw_sierpinski_triangle(tracer_on, colour, initial_modulus, line_width, initial_heading,initial_x, initial_y, steps):
turtle=Turtle()
turtle.name = 'Mother of all turtles'
turtle.reset ()
turtle.tracer (tracer_on)
turtle.speed ('fastest')
turtle.color (colour)
turtle.width (line_width)
turtle.up()
turtle.goto (initial_x, initial_y)
turtle.down()
turtle.set_heading (initial_heading)
draw_sub_pattern (tracer_on, turtle, initial_modulus, 0, steps)
def draw_sub_pattern (tracer_on, turtle, modulus, depth, steps):
if (depth >= steps):
return;
x, y = turtle.position ()
heading = turtle.heading ()
# draw the pattern
turtle.up()
turtle.down()
turtle.forward (modulus)
draw_sub_pattern(tracer_on, turtle, modulus * 0.5, depth + 1, steps)
turtle.up()
turtle.goto(x, y)
turtle.down()
turtle.set_heading (heading + 120)
turtle.forward (modulus)
draw_sub_pattern(tracer_on, turtle, modulus * 0.5, depth + 1, steps)
turtle.up()
turtle.goto(x, y)
turtle.down()
turtle.set_heading (heading + 240)
turtle.forward (modulus)
draw_sub_pattern(tracer_on, turtle, modulus * 0.5, depth + 1, steps)
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