Hi guys i was wondering how in python you invert this line as I have indicated. I have tried all sorts of mathemtical functions. I am using zelle graphics module. Currnetly I have produced lines going in one direction im trying to produce the same lines again but in the other direction i am sure its just a logical solution. Any help would be most appreciated. Thanks.
from graphics import * def main(): colour = raw_input("Enter the patch colour: ") win = GraphWin("Patch", 200, 200) drawPatch(win, 50, 50, colour) def drawPatch(win, x, y, colour): for i in range(5): for j in range(5): if (i + j) % 2 == 0: topLeftX = x + i * 20 topLeftY = y + j * 20 topRightX = x + i * 20 #how to invert lines so they cross topRightY = y + j * 20 line1 = Line(Point(topLeftX, topLeftY), Point(topLeftX + 20, topLeftY + 20)) line1.setFill(colour) line1.draw(win) #Next Lines accross line2 = Line(Point(topRightX, topRightY), Point(topRightX + 20, topRightY + 20)) line2.setFill(colour) line2.draw(win) main()