Animation in WPF query

I'm playing with WPF for the first time in an animation/graphics context, and I am wondering how you'd move sp开发者_如何学JAVArites around. I googled and came up with this example, but the animation is done by increasing/decreasing the margins and padding.

My question is, is this normal? I would have thought you'd do animation by changing the x and y co-ordinates of a sprite, not its padding.

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Position and Margin are the same thing. Position is the distance to the edge of the screen, or the egde of the window. Margin is the same thing.