Set Dot Color Based On Where They Are In Python Turtle?

from turtle import * from random import randint speed('fastest') pendown() goto(200, 0) goto(200, 200) goto(0, 200) goto(0,0) goto(200,200) area_size = 800 max_coord = area_siz

Solution 1:

I'm guessing you're using the random module and generating first the x coordinate and then the y coordinate. If this is indeed your method, then run a check on each as you generate it to see if it's within the confines of your box. ie if (x > 10) and (x < 20): and if (y > 15) and (y < 25): If the statement is true then set a variable the_color to red, else, set it to blue

Solution 2:

Since it's been a few years, below is a posible solution to this problem. Note that I switched from turtle.dot() to turtle.stamp() which speeds up the execution by 2.5X:

from turtle import Turtle, Screen
from random import randint

AREA_SIZE = 800
MAX_COORD = AREA_SIZE / 2
SQUARE_SIZE = 200
DOT_SIZE = 4
NUM_DOTS = 300
STAMP_SIZE = 20

screen = Screen()
screen.setup(AREA_SIZE, AREA_SIZE)

turtle = Turtle(shape="circle")
turtle.shapesize(DOT_SIZE / STAMP_SIZE)
turtle.speed("fastest")

for _ inrange(4):
    turtle.forward(SQUARE_SIZE)
    turtle.left(90)

turtle.left(45)
turtle.goto(SQUARE_SIZE, SQUARE_SIZE)
turtle.penup()

black, red, green = 0, 0, 0for _ inrange(NUM_DOTS):

    color = "black"

    x = randint(-MAX_COORD, MAX_COORD)
    y = randint(-MAX_COORD, MAX_COORD)

    turtle.goto(x, y)

    # color dot if it's in the square but not smack on any of the linesif0 < x < SQUARE_SIZE and0 < y < SQUARE_SIZE:
        if x < y:
            color = "green"# easier to distinguish from black than blue
            green += 1elif y < x:
            color = "red"
            red += 1else black += 1# it's on the line!else:
        black += 1# it's not in the square

    turtle.color(color)
    turtle.stamp()

turtle.hideturtle()

print("Black: {}\nRed: {}\nGreen: {}".format(black, red, green))

screen.exitonclick()

Note that I used green instead of blue as I was having too hard a time distinguishing the tiny blue dots from the tiny black dots!

OUTPUT

At the end it prints out a tally of how many dots of each color were printed:

> python3 test.py
Black: 279Red: 5Green: 16
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