turtlehack.py

import turtle
import random

# A function that takes a turtle, a radius, a color, and an optional
# thickness and draws a circle


def colored_circle(turtle, radius, color, thickness=1):
    turtle.width(thickness)
    turtle.color(color)
    turtle.circle(radius)


# A function that takes a side length and a color and makes a square.
def colored_square(turtle, side_length, color):
    turtle.color(color)
    for i in range(4):
        turtle.forward(side_length)
        turtle.left(90)
    turtle.left(90)

# A function that take a turtle, dot size, color, and number of dots in
# line to make a dotted line


def dotted_line(turtle, number_of_dots, dot_size, color):
    for i in range(number_of_dots):
        turtle.dot(dot_size, color)
        turtle.penup()
        turtle.forward(dot_size * 2)
        turtle.pendown()

# A function that takes a number and makes that many random sized circles


def random_circle(turtle, number_of_circles, max_size=100):
    for i in range(number_of_circles):
        turtle.circle(random.randint(0, max_size + 1))

# A function that changes the turtle's color to a random color


def random_color():
    '''
    returns a random hex value
    '''
    color_value = format(random.randint(0, 16777215), '06x')
    return "#" + color_value

# A function that takes a turtle and a pair of numbers and sets the turtle
# to a random location from x to -x and y to -y


def random_location(turtle, x, y, relative=False):
    '''
    Moves a turtle to a random location within x,y bounds
    takes turtle, x bound, y bound, uselrelative location (boolean)
    '''
    if relative is False:
        random_x = random.randint(-x, x)
        random_y = random.randint(-y, y)
        turtle.setpos(random_x, random_y)
    if relative is True:
        random_x = turtle.xcor() + random.randint(-x, x)
        random_y = turtle.ycor() + random.randint(-y, y)
        turtle.setpos(random_x, random_y)
    else:
        raise Exception("expected boolean")
# A function that makes n random colored and located dots inside x, y
# Thanks to Stacey Mantooth for the idea


def pox(turtle, x, y, n=10):
    origx = turtle.xcor()
    origy = turtle.ycor()
    turtle.penup()
    for i in range(n):
        random_location(turtle, x, y, True)
        turtle.dot(random.randint(3, 10), random_color())
        turtle.setpos(origx, origy)
    turtle.pendown()

# A function that draws an n-sided polygon


def n_sided_polygon(
    turtle,
    n,
    color="#FFFFFF",
    line_thickness=1,
        line_length=80):
    '''
    Draw an n-sided polygon
    input: turtle, number of sides, line color, line thickness, line length
    '''
    # for n times:
    # Draw a line, then turn 360/n degrees and draw another

    # set initial parameters
    turtle.degrees()
    turtle.pensize(line_thickness)
    turn_angle = (360 / n)

    # Draw each line segment and turn

    for i in range(0, n):
        turtle.color(color)
        turtle.pendown()
        turtle.forward(line_length)
        turtle.penup()
        turtle.left(turn_angle)

    # return the turtle to its original starting location
    turtle.left(turn_angle)

    return 0