Registering new shapes
The turtle module has register_shape() function for registering custom shapes.
Syntax : turtle.register_shape(name, shape)
Parameters :
- name : a string- the name of the shape to be registered.
- shape : a tuple of tuples containing the coordinates for the custom shape.
The n-tuple argument for the shape parameter, denotes the relative position of each corner of an n-sided polygon. Let us try to create a simple diamond shape to understand this.
Consider this diamond, having length of diagonal = 20, in a Cartesian plane :
To create this shape, we need to pass these coordinates in clockwise order.
Python3
import turtle# turtle objectdiamond_turtle = turtle.Turtle()# the coordinates of each cornershape = ((0, 0), (10, 10), (20, 0), (10, -10))# registering the new shapeturtle.register_shape('diamond', shape)# changing the shape to 'diamond'diamond_turtle.shape('diamond')# Keep the turtle window openturtle.done() |
Output:
How to Create custom Turtle shapes in Python?
In Turtle, by default, we have an arrowhead-shaped cursor for drawing on the canvas. This can be changed to some other predefined shape or we can also create a custom shape and register it under a name. Not just that, we can even use gif format images to replace our cursor.
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