# IterativeTree.py
#
# Description: Draws a tree iteratively (i.e., using a loop).
#
# Author: Alenjandra Jahns and AL
# Last Modification Date: March 4 2024

# Import the turtle and the random libraries
import turtle
import random


# Define a function that draws leaves
def drawLeaf(aTurtle, aColour):
    '''Draws a leaf ietratively where 
       "aTurtle" is the turtle drawing the tree and
       "aColour" is the colour of the leaf.
    '''

    aTurtle.color(aColour)
    aTurtle.penup()
    
    # Positioning the turtle at a random location
    aTurtle.goto(random.randint(-170,170), random.randint(0,250))
    aTurtle.pendown()

    # Drawing a "leaf" of a random size
    aTurtle.dot(random.randint(10,50))
        
    return


# ***Main part of my program

# Creates a graphics window "canvas"
canvas = turtle.Screen()
canvas.bgcolor("lightblue")

# Create a turtle named "tt"
tt = turtle.Turtle()

# Set up our turtle "tt"
tt.width(30)

# Move our turtle "tt"
tt.speed(0)
tt.penup()
tt.goto(0, -180)
tt.left(90)
tt.pendown()

# Draw the trunk
theTrunkLength = 180
tt.forward(theTrunkLength)

# Determine the number of leaves to draw
numberOfLeaves = random.randint(50,300)

# Call our function
for eachLeaf in range(numberOfLeaves):
    drawLeaf(tt, "green")

# Click on the canvas to exit
canvas.exitonclick()