#
JustForFun i created these Sierpinski triangles using #
Python's #
turtle module | #
maths #
math #
programming #
fractals #
recursionimport loggingimport turtleimport timeSPEED_INT = 5 # 1-10 where 0 is as fast as possiblelogging.basicConfig(level=logging.DEBUG)DISPLAY_WIDTH = 1620# Turtle setupscreen = turtle.getscreen()t = turtle.getturtle()turtle.title("Sierpinski Triangle (using turtle)")t.shape("turtle")t.speed(SPEED_INT)turtle.setheading(0)# ..set start positiont.penup()turtle.setx(-DISPLAY_WIDTH // 2)turtle.sety(-450)t.pendown()start_pos = t.pos()time.sleep(1)def draw_recursive(i_level: int, i_direction: int): """Level 1 is the starting i_starting_level (0 doesn't exist)""" logging.debug(f"{i_level * '-'} draw_recursive called with level {i_level}") if i_level == 1: t.forward(distance) return draw_recursive(i_level - 1, -i_direction) t.left(i_direction * 60) draw_recursive(i_level - 1, i_direction) t.left(i_direction * 60) draw_recursive(i_level - 1, -i_direction)distance = 0def draw_(i_starting_level: int, i_pen_color_channel: float = 0.0): logging.debug(f"==== draw_ called with starting level {i_starting_level} ====") t.penup() t.setpos(start_pos) t.setheading(0) t.pendown() global distance distance = 1024 / (2 ** (i_starting_level - 1)) distance = min(100, distance) pen_size = distance // 2 if pen_size < 1: raise Exception("Pen size is smaller than one") t.pensize(distance // 2) t.pencolor((i_pen_color_channel,) * 3) if i_starting_level % 2 == 0: direction = 1 else: direction = -1 draw_recursive(i_starting_level, direction)# draw_(9)pen_color_channel = 0.8for i_starting_level in range(5, 8): if pen_color_channel < 0: raise Exception("Pen color channel smaller than zero") draw_(i_starting_level, pen_color_channel) pen_color_channel -= 0.2t.hideturtle()turtle.done()
