<reponame>peppelongo96/materiale-LT-ing-informatica-unical
import turtle

def drawTriangle(points,color,myTurtle):
    myTurtle.fillcolor('green')
    myTurtle.up()
    myTurtle.goto(points[0][0],points[0][1])
    myTurtle.down()

    myTurtle.goto(points[1][0],points[1][1])
    myTurtle.goto(points[2][0],points[2][1])
    myTurtle.goto(points[3][0],points[3][1])
    myTurtle.goto(points[0][0],points[0][1])


    myTurtle.begin_fill()
    myTurtle.goto(0,0)
    myTurtle.goto(points[1][0],points[1][1])
    myTurtle.end_fill()
    
    myTurtle.up()
    myTurtle.goto(0,0)
    myTurtle.down()

    myTurtle.fillcolor('blue')
    myTurtle.begin_fill()
    myTurtle.goto(points[3][0],points[3][1])
    myTurtle.goto(points[2][0],points[2][1])
    myTurtle.goto(0,0)
    myTurtle.end_fill()


def getMid(p1,p2):
    return ( (p1[0]+p2[0]) / 2, (p1[1] + p2[1]) / 2)

def sierpinski(points,degree,myTurtle):
    colormap = ['blue','red','green','white','yellow',
                'violet','orange']
    drawTriangle(points,colormap[degree],myTurtle)
##    if degree > 0:
##        sierpinski([points[0],getMid(points[0], points[1]), getMid(points[0], points[2])], degree-1, myTurtle)
##        sierpinski([points[1], getMid(points[0], points[1]),
##                        getMid(points[1], points[2])],
##                   degree-1, myTurtle)
##        sierpinski([points[2],getMid(points[2], points[1]),getMid(points[0], points[2])], degree-1, myTurtle)

def main():
   myTurtle = turtle.Turtle()
   myWin = turtle.Screen()

   myPoints = [[-200, 200],[200,200],[200,-200],[-200,-200]]
   sierpinski(myPoints,3,myTurtle)

##   myPoints = [[-100,-50],[-100,100],[100,-50]]
##   sierpinski(myPoints,3,myTurtle)
   
   myWin.exitonclick()

main()
