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6.draw_circle()

Description

Create a circle on the UNIHIKER screen

Syntax

GUI.draw_circle(x, y, r, width, color, onclick)

Parameters

x: The x-coordinate where the circle is displayed on the UNIHIKER screen.
y: The y-coordinate where the circle is displayed on the UNIHIKER screen.
r: The radius of the circle.
width: The width of the circle. color: The colour of the circle.
onclick: The callback function triggered when the circle is clicked.

Return

**Circle object

Example Description

In this example, our main goal is to display a grey circle on the UNIHIKER screen and bind it to a click callback function.

Hardware Required

Example Code

Instantiate an object of the GUI class within the UNIHIKER class, and call the draw_circle() function through this object to display the circle and set the parameters. 

from unihiker import GUI   # Import the package
gui = GUI()  # Instantiate the GUI class

# Draw a circle on the GUI with the specified coordinates and parameters
# The circle is centered at (x=120, y=150) with a radius of 80 pixels
# The width of the circle's outline is set to 5 pixels
# The color of the circle is specified as "grey"
# When the circle is clicked, the lambda function is executed, which prints "circle clicked" to the console
gui.draw_circle(x=120, y=150, r=80, width=5, color="grey", onclick=lambda: print("circle clicked"))

import time
while True:
    # Add a delay to prevent the program from exiting and to observe the effects
    time.sleep(1)

Program Effect: image.png