tkinter example fan (snippet)

Python tkinter (gui) example 'fan'

fan

Python tkinter example: fan

from tkinter import * # Import tkinter

width = 200
height = 200
radius = 80

class MainGUI:
    def __init__(self):
        window = Tk() # Create a window
        window.title("Fan") # Set a title

        self.canvas = Canvas(window, bg = "white", width = width, height = height)
        self.canvas.pack()

        self.startingAngle = 0
        while True:
            self.startingAngle += 5
            self.displayFan(self.startingAngle)
            self.canvas.after(100) # Sleep for 100 milliseconds
            self.canvas.update()

        window.mainloop() # Create an event loop

    def displayFan(self, startingAngle):
        self.canvas.delete("fan") 

        self.canvas.create_arc(width / 2 - radius, height / 2 - radius, width / 2 + radius, height / 2 + radius,
            start = self.startingAngle + 0, extent = 30, fill = "red", tags = "fan")

        self.canvas.create_arc(width / 2 - radius, height / 2 - radius, width / 2 + radius, height / 2 + radius,
            start = self.startingAngle + 90, extent = 30, fill = "red", tags = "fan")

        self.canvas.create_arc(width / 2 - radius, height / 2 - radius, width / 2 + radius, height / 2 + radius,
            start = self.startingAngle + 180, extent = 30, fill = "red", tags = "fan")

        self.canvas.create_arc(width / 2 - radius, height / 2 - radius, width / 2 + radius, height / 2 + radius,
            start = self.startingAngle + 270, extent = 30, fill = "red", tags = "fan")

MainGUI()

Useful links

• Learn Tkinter: https://pythonbasics.org/tkinter/
• Wikipedia tkinter: https://en.wikipedia.org/wiki/Tkinter