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 :
Python3
# importing packageimport turtle# make screen object and# set screen mode to worldsc = turtle.Screen()sc.mode('world')# set world coordinatesturtle.setworldcoordinates(-20, -20, 20, 20)# loop for some motionfor i in range(20): turtle.forward(1+1*i) turtle.right(90) |
Output:
Part A
Example 2:
Python3
# importing packageimport turtle# make screen object and# set screen mode to worldsc = turtle.Screen()sc.mode('world')# set world coordinatesturtle.setworldcoordinates(-40, -40, 40, 40)# loop for some motionfor 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 :
Python3
# importing packageimport turtle# make screen object and# set mode to worldsc = turtle.Screen()sc.mode('world')# set world coordinatesturtle.setworldcoordinates(-50, -50, 50, 50)# do some motionfor i in range(16): turtle.forward(1+1*i) turtle.right(90)# set world coordinatesturtle.setworldcoordinates(-40, -40, 40, 40)# do some motionfor i in range(16): turtle.forward(1+1*(i+16)) turtle.right(90)# set world coordinatesturtle.setworldcoordinates(-30, -30, 30, 30)# do some motionfor 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 ).
