CODEWITHSUNDEEP
pythonturtle-graphicspython-turtlepython-3.9
Yok Artık
Yok Artık

Reputation: 51

Turtle animation is so fast in python

I made windmill but it is moving so fast. I use turtle library to do that and t2 is only for circle, t makes the main job. I use tracer/update and I tried some numbers inside tracer but nothing changed. How can I do that animation at normal speed?

import turtle
screen = turtle.Screen()
screen.tracer(0)         
t2 = turtle.Turtle()
t2.speed(2)
t2.forward(50)
t2.setheading(90)
t2.circle(50)
t = turtle.Turtle()
t.speed(2)
def rectangle() :
    t.penup()
    t.forward(170)
    t.left(90)
    t.pendown()
    t.forward(5)
    t.left(90)
    t.forward(120)
    t.left(90)
    t.forward(10)
    t.left(90)
    t.forward(120)
    t.left(90)
    t.forward(5)
def windmill():
    for i in range(4):
        rectangle()
        t.penup()
        t.goto(0,0)
        t.pendown()
while True:
    t.clear()
    windmill()
    screen.update()
    t.left(10)

Upvotes: 2

Views: 1379

Answers (2)

cdlane
cdlane

Reputation: 41872

How can I do that animation at normal speed?

Don't use while True: nor sleep() in an event-driven world like turtle! Instead, use a turtle timer event:

from turtle import Screen, Turtle

def rectangle(t):
    t.forward(50)
    t.left(90)
    t.backward(5)
    t.pendown()

    for _ in range(2):
        t.forward(10)
        t.right(90)
        t.forward(120)
        t.right(90)

    t.penup()

def windmill(t):
    for _ in range(4):
        t.penup()
        rectangle(t)
        t.goto(0, 0)

screen = Screen()
screen.tracer(0)

turtle = Turtle()
turtle.setheading(90)

def rotate():
    turtle.clear()
    windmill(turtle)
    screen.update()
    turtle.left(1)

    screen.ontimer(rotate, 40)  # adjust speed via second argument

rotate()

screen.mainloop()

You can adjust the second argument to ontimer() (in milliseconds) to control how fast the animation runs.

Upvotes: 3

Red
Red

Reputation: 27557

You can use the sleep method from the built-in time module:

import turtle
from time import sleep # Imported here

screen = turtle.Screen()
screen.tracer(0)         
t2 = turtle.Turtle()
t2.forward(50)
t2.setheading(90)
t2.circle(50)
t = turtle.Turtle()
def rectangle() :
    t.penup()
    t.forward(170)
    t.left(90)
    t.pendown()
    t.forward(5)
    t.left(90)
    t.forward(120)
    t.left(90)
    t.forward(10)
    t.left(90)
    t.forward(120)
    t.left(90)
    t.forward(5)
def windmill():
    for i in range(4):
        rectangle()
        t.penup()
        t.goto(0,0)
        t.pendown()
while True:
    sleep(0.05) # Used here
    t.clear()
    windmill()
    screen.update()
    t.left(10)

A smoother way is to just reduce the left amount for each iteration of the while loop:

import turtle

screen = turtle.Screen()
screen.tracer(0)         
t2 = turtle.Turtle()
t2.forward(50)
t2.setheading(90)
t2.circle(50)
t2.speed(2)
t = turtle.Turtle()
t.speed(2)
def rectangle() :
    t.penup()
    t.forward(170)
    t.left(90)
    t.pendown()
    t.forward(5)
    t.left(90)
    t.forward(120)
    t.left(90)
    t.forward(10)
    t.left(90)
    t.forward(120)
    t.left(90)
    t.forward(5)
def windmill():
    for i in range(4):
        rectangle()
        t.penup()
        t.goto(0,0)
        t.pendown()
while True:
    t.clear()
    windmill()
    screen.update()
    t.left(0.2) # Reduced here!

Upvotes: 0

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