pyFlagsWithSwampy

from swampy.World import World

class Shape():
    def __init__(self, w, bg, size):
        # define a square canvas which our methods will then use
        # Use the size and colors passed from main code
        self.canvas = w.ca(width=size, height=size, background=bg)

    def draw_rectangle(self, points, colour):
        self.canvas.rectangle(points, width=0, fill=colour)

    def draw_triangle(self, points, colour):
        self.canvas.polygon(points, fill=colour)

world = World()
czech = Shape(world, 'grey', 500)        # create a square grey canvas

# draw, a white rectangle for the upper half of the flag
czech.draw_rectangle([[-250, 0], [250, 150]], 'white')

# draw a red rectangle for the lower half of the flag
czech.draw_rectangle([[-250, -150], [250, 0]], 'red')

# draw a blue triangle at the left side of the flag. It will overlay parts of the 2 rectangles
czech.draw_triangle([[-250, -150], [-50, 0], [-250, 150]], 'blue')

world.mainloop()