Tkinter -> canvas -> make an obect move from one spot to next

TMS

Schools over!!! Now its time to play.

I would like to learn how to make objects move from one location to the next on a canvas widget. For example:

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from Tkinter import *

class square:

    def __init__(self, canvas, xy, color, change):

        self.canvas = canvas

        self.id = self.canvas.create_rectangle(-10-abs(change),

                                             -10, 11+abs(change), 11, fill = color)

        self.canvas.move(self.id, xy[0], xy[1])

        if change > 0:

            self.change = change

            self.start = self.right

        else:

            self.change = -change

            self.start = self.left

    def __call__(self):

        return self.start

    def right(self):

        xy = self.canvas.coords(self.id)

        if xy[2] >= self.canvas.winfo_width():

            return self.left()

        self.canvas.move(self.id, self.change, 0)

        return self.right

    def left(self):

        xy = self.canvas.coords(self.id)

        if xy[0] <= 0:

            return sefl.right()

        self.canvas.move(self.id, -self.delta,0)

        return self.left
 
root = Tk()

root.title("square")

frame = Frame(root, bd=5, relief=SUNKEN)

frame.pack()

c=Canvas(frame, width=500, height = 500, bd=0, highlightthickness=0)

c.pack()

item= [square(c,(10,10), "black", 10)]

root.update()

try:

    while 1:

        for i in range(len(item)):

            item[i] = item[i]()

            root.update_idletasks()

        root.updtate()

except TclError:

    pass

I would like the box to move from one spot to the next. I have been trying to modify a program that I found that moves 'blobs' back and forth. What I want to (eventually) do is move the square from one location to another based on a mouse event.So, I figure the first thing I really need to do is learn how to move the box from one 'hard coded' location to another 'hard coded location.' Can't seem to get this part, so I tried just moving the object like the 'blobs' program. But that isn't working either.

Any advice, tips, hints, whatever would be greatly appreciated.

tms

TMS

OK, better yet... I have a gif moving now, but I want to make the image delete after it moves a little bit. I suppose I should have a loop doing what I'm doing by hand, but .... I'm just trying to get the thing to work.

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# load and display image using Tkinter

from Tkinter import *

root = Tk()

root.title("Click me!")

def next_image(event):

    global toggle_flag

    global x, y, photo2, photo3

    # display photo2, move to right, y stays same

    canvas1.create_image(x+10, y, image=photo2)

    canvas1.create_image(x+20, y, image=photo2)           

    canvas1.create_image(x+30, y, image=photo2)

    canvas1.create_image(x+40, y, image=photo2)

    canvas1.create_image(x+50, y, image=photo2)

    canvas1.create_image(x+60, y, image=photo2)

    canvas1.create_image(x+70, y, image=photo2)

    canvas1.create_image(x+100, y, image=photo2)
 
image1 = "DustY.GIF"   #use some random gif

photo1 = PhotoImage(file=image1)

# make canvas the size of image1/photo1

width1 = photo1.width()

height1 = photo1.height()

canvas1 = Canvas(width=width1, height=height1)

canvas1.pack()

# display photo1, x, y is center (anchor=CENTER is default)

x = (width1)/2.0

y = (height1)/2.0

canvas1.create_image(x, y, image=photo1)

canvas1.bind('<Button-1>', next_image)  # bind left mouse click

root.mainloop()

So, the image will go from left to right, but it needs to be deleted after each move. Any ideas?

bartonc

According to this code by kudos, it's the coords() function that moves an object. He also posted and Easter graphic, but I haven't run it.

Tkinter -> canvas -> make an obect move from one spot to next

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