Mouse Press

Move the mouse to position the shape. Press the mouse button to invert the color.

from p5 import *

def setup():
        size(640, 360)
        no_smooth()
        fill(126)
        background(102)

def draw():
        if mouse_is_pressed:
                stroke(255)
        else:
                stroke(0)

        line((mouse_x-66, mouse_y), (mouse_x+66, mouse_y))
        line((mouse_x, mouse_y-66), (mouse_x, mouse_y+66))

if __name__ == '__main__':
        run()