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Turtle Graphics - Turtle and Window Control

[Index] [<< Previous section: Curved Paths] [Next section: Pen and Background Control >>]

showturtle
st
Description: shows the turtle on the canvas.
hideturtle
ht
Description: hides the turtle from the canvas.
clean
Description: clears the graphics canvas.
clearscreen
cs
Description: clears the graphics canvas and moves the turtle at the initial position.
This command is the same as clear and home together.
wrap
Description: (default) tells the turtle to enter wrap mode. From now on, if the turtle is asked to move past the boundary of the graphics window, it will "wrap around" and reappear at the opposite edge of the window.
Example: wrap fd 300
The result is shown bellow:
window
Description: tells the turtle that can move past the edges of the screen, unbounded. The visible canvas is considered as just part of an infinite graphics plane; the turtle can be anywhere on the plane.
Example: window fd 300
The result is shown bellow:
If you lose the turtle, home will bring it back to the center of the window.
fence
Description: tells the turtle that it can't move past the edges of the screen. From now on, if the turtle is asked to move past the boundary of the graphics canvas, it will move as far as it can and then stop at the edge.
Example: fence fd 300
The result is shown bellow:

[Index] [<< Previous section: Curved Paths] [Next section: Pen and Background Control >>]
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