make a turtle object an image

[Agusben]

i have a program that plots a parametric equation and then saves the drawing to a jpg image file.

import turtle
from math import cos,sin,tan,pi
from datetime import datetime
from PIL import Image 


window = turtle.Screen()
window.screensize(1000,1000)
pen = turtle.Turtle()
pen.hideturtle()
pen.pensize(3)
pen.penup()

angle = 0
theta = 0.01 
a=-7
b=-17
c=27
d=-4
steps = int (250*pi/theta)
turtle.tracer(0,0)

for t in range(0,steps):

        angle+=theta
        x=(-cos(a*angle/d)-cos(b*angle/d)+cos(c*angle/d))*150
        y=(-sin(a*angle/d)-sin(b*angle/d)+sin(c*angle/d))*150

        pen.goto(x,y)
        pen.pendown()
turtle.update()

date = (datetime.now()).strftime("%d%b%Y-%H%M%S") 
fileName = 'posta-' + date
pen .getscreen().getcanvas().postscript(file= fileName+'.eps')
img = Image.open(fileName + '.eps') 
img.save(fileName + '.jpg')  

print ("it is done")

turtle.done()

the problem is that the image that this program saves is not a complete version of the parametric equation.
is there a way to save big turtle drawings as images?

the part of the program that saves the turtle object as jpg:

pen .getscreen().getcanvas().postscript(file= fileName+'.eps')
img = Image.open(fileName + '.eps') 
img.save(fileName + '.jpg')  

is there another way to save a turtle drawing as a jpg image file?

[DPaul]

I have read about the pyscreenshot lib, but never used it.
I did use pyperclip, but only for plain text.
Check it out.

Paul

[newbieAuggie2019]

is there another way to save a turtle drawing as a jpg image file?

Hi!

Maybe you could use the following.
I have modified your original program:

import turtle
from math import cos,sin,tan,pi
from datetime import datetime
from PIL import Image 


window = turtle.Screen()
window.screensize(1000,1000)
pen = turtle.Turtle()
pen.hideturtle()
pen.pensize(3)
pen.penup()

angle = 0
theta = 0.01 
a=-7
b=-17
c=27
d=-4
steps = int (250*pi/theta)
turtle.tracer(0,0)

for t in range(0,steps):

        angle+=theta
        x=(-cos(a*angle/d)-cos(b*angle/d)+cos(c*angle/d))*150
        y=(-sin(a*angle/d)-sin(b*angle/d)+sin(c*angle/d))*150

        pen.goto(x,y)
        pen.pendown()
turtle.update()

date = (datetime.now()).strftime("%d%b%Y-%H%M%S") 
fileName = 'posta-' + date
pen .getscreen().getcanvas().postscript(file= fileName+'.eps')
img = Image.open(fileName + '.eps') 
img.save(fileName + '.jpg')  

print ("it is done")

turtle.done()

by modifying your line 35 into a group of new lines, and also I eliminated your line 41:

import turtle
from math import cos,sin,tan,pi
from datetime import datetime
from PIL import Image 
 
    
window = turtle.Screen()
window.screensize(1000,1000)
pen = turtle.Turtle()
pen.hideturtle()
pen.pensize(3)
pen.penup()
 
angle = 0
theta = 0.01 
a=-7
b=-17
c=27
d=-4
steps = int (250*pi/theta)
turtle.tracer(0,0)
 
for t in range(0,steps):
 
        angle+=theta
        x=(-cos(a*angle/d)-cos(b*angle/d)+cos(c*angle/d))*150
        y=(-sin(a*angle/d)-sin(b*angle/d)+sin(c*angle/d))*150
 
        pen.goto(x,y)
        pen.pendown()
turtle.update()
 
date = (datetime.now()).strftime("%d%b%Y-%H%M%S") 
fileName = 'posta-' + date

screen = turtle.Screen()
screen.setup(1000, 1000)
turtle = turtle.Turtle(visible=False)
screen.tracer(False)
screen.tracer(True)
canvas = screen.getcanvas()
canvas.postscript(file= fileName+'.eps', width=1000, height=1000)

img = Image.open(fileName + '.eps') 
img.save(fileName + '.jpg')  
 
print ("it is done")

Now, you get this output:

Output:
 RESTART: C:\Users\User1\AppData\Local\Programs\Python\Python37\turtle_screen_size_01.py 
it is done
>>>

I hope it helps.

All the best,