Tkintering with the Turtle

One of the DAH semester modules is CS6102. We here given a very interesting Python starter project assignment as part of CS6102. The brief was to make a fractal generator (using recursion). One of the most time consuming tasks was getting turtle graphics to work with tkinter and draw to a canvas.

Lines 7 to 17 below are a Graphics Pen class, note this uses Rawturtle 

Line 33 is where the canvas is created note its reference to parent

self.canvas = Canvas(self.parent, width=400, height=400)

Line 36 is where the Rawturtle is created, this is passed to (line 7):

class GraphicsPen(RawTurtle):

 
Line 47 initializes the RawTurtle with a target of the canvas:

self.graphic = GraphicsPen(self.canvas,0,0,'black',0,3)

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from turtle import * from tkinter import * from tkinter.ttk import * #Graphics Pen hold the Rawturtle for drawing class GraphicsPen(RawTurtle): def __init__(self,canvas,x,y,color,speed,width): RawTurtle.__init__(self,canvas) self.ht() self.penup() self.goto(x,y) self.color(color) self.speed(speed) self.width(width) self.pendown() #end __init__ #Application Class class Application(Frame): def __init__(self,parent): Frame.__init__(self, parent) self.parent = parent self.makeUI() #end __init__ def makeUI(self): self.parent.title('Fractal Generator') #Setup the fractal drawing canvas self.canvasFrame = LabelFrame(self, text = 'Canvas Space', width=410, height=410) self.canvas = Canvas(self.parent, width=400, height=400) self.canvas.pack(side=LEFT) self.turtle = RawTurtle(self.canvas) self.turtle.ht() screen = self.turtle.getscreen() screen.bgcolor('blue') self.onDraw() #end makeUI def onDraw(self): self.graphic = GraphicsPen(self.canvas,0,0,'black',0,3) for i in range(0, 4): self.graphic.forward(100) self.graphic.left(90) #end onDraw def main(): root = Tk() root.title('Assignment') app = Application(root) root.mainloop() if __name__ == '__main__': main()

Running the code above produces the following output