How to set shape.Position without creating new Point objects in WPF?

I have 1000s shapes whose StartPoint, EndPoint, Center, etc is being set 30 times per second but the only way to do this is to create a new Point each time, since System.Windows.Point is a struct so I can't do this开发者_开发知识库:

shape.Center.X = x;

And there is not even a SetCenter, etc method to solve this.

Any ideas on how to do this?

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Why don't you want to create new Points?

They're simple value types, no memory or performance issues that I can see.

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Use TranslateTransform to place the shapes. Use the RenderTransformOrigin to set the 'center'.

EDIT

RenderTransforms can be accelerated by the GPU. You wouldn't add a transformation each frame but add just one and change its properties over time. See BitmapCache and this is also quite interesting