import turtle def drawTriangle(points,color,myTurtle): myTurtle.fillcolor(color) myTurtle.up() myTurtle.goto(points[0][0],points[0][1]) myTurtle.down() myTurtle.begin_fill() myTurtle.goto(points[1][0],points[1][1]) myTurtle.goto(points[2][0],points[2][1]) myTurtle.goto(points[0][0],points[0][1]) 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 = [[-100,-50],[0,100],[100,-50]] # sierpinski(myPoints,3,myTurtle) myPoints = [[-150,-75],[0,200],[150,-75]] sierpinski(myPoints,5,myTurtle) myWin.exitonclick() main()