turtle.setworldcoordinates() function in Python

The turtle module provides turtle graphics primitives, in both object-oriented and procedure-oriented ways. Because it uses tkinter for the underlying graphics, it needs a version of Python installed with Tk support.

turtle.setworldcoordinates()

This function is used to set up a user-defined coordinate system. This performs a reset. If mode 'world' is already active, all drawings are redrawn according to the new coordinates. 

Note: In user-defined coordinate systems angles may appear distorted.

Syntax : turtle.setworldcoordinates(llx, lly, urx, ury)
 

Parameters:

• llx: a number, x-coordinate of lower left corner of canvas
• lly: a number, y-coordinate of lower left corner of canvas
• urx: a number, x-coordinate of upper right corner of canvas
• ury: a number, y-coordinate of upper right corner of canvas

Below is the implementation of the above method with some examples :

Example 1 :

# importing package import turtle # make screen object and # set screen mode to world sc = turtle.Screen() sc.mode('world') # set world coordinates turtle.setworldcoordinates(-20, -20, 20, 20) # loop for some motion for i in range(20): turtle.forward(1+1*i) turtle.right(90) 

Output:

 Example 2:

# importing package import turtle # make screen object and # set screen mode to world sc = turtle.Screen() sc.mode('world') # set world coordinates turtle.setworldcoordinates(-40, -40, 40, 40) # loop for some motion for i in range(20): turtle.forward(1+1*i) turtle.right(90) 

Output :

In the  above two examples, the code are the same and only the difference of world coordinates differ the output as shown below :

Example  3 :

# importing package import turtle # make screen object and # set mode to world sc = turtle.Screen() sc.mode('world') # set world coordinates turtle.setworldcoordinates(-50, -50, 50, 50) # do some motion for i in range(16): turtle.forward(1+1*i) turtle.right(90) # set world coordinates turtle.setworldcoordinates(-40, -40, 40, 40) # do some motion for i in range(16): turtle.forward(1+1*(i+16)) turtle.right(90) # set world coordinates turtle.setworldcoordinates(-30, -30, 30, 30) # do some motion for i in range(16): turtle.forward(1+1*(i+32)) turtle.right(90) 

Output :

Here, we can see that the all previous drawing is set to new world coordinates ( drawing enlarges ).