WPF performance on scaling a large scene?

I have a similar problem with bitonal images which need to be zoomed and smooth panned, but being bitonal need to be anti-aliased to make onscreen viewing acceptable. Obviously this anti-aliasing can cause performance issues. Have you played around with the RenderOptions.

SetBitmapScalingMode() for the image object your are displaying? If so you may have to trade off between the speed/performance of the zoom animation and the quality of the rendered image One possible solution I had thought of, but have not yet had time to implement, would be to switch into a low quality bitmap scaling mode during the animation, and switching back to high quality at the end of the animation.

I have a similar problem with bitonal images which need to be zoomed and smooth panned, but being bitonal need to be anti-aliased to make onscreen viewing acceptable. Obviously this anti-aliasing can cause performance issues. Have you played around with the RenderOptions.

SetBitmapScalingMode() for the image object your are displaying? If so you may have to trade off between the speed/performance of the zoom animation and the quality of the rendered image. One possible solution I had thought of, but have not yet had time to implement, would be to switch into a low quality bitmap scaling mode during the animation, and switching back to high quality at the end of the animation.

Actually we are not using images at all, all of our content on screen are user controls that contain standard vector based shapes like rectangles, ellipses, etc... (but there are quite a few gradient fills which I don't believe should be an issue) – Mark Mar 12 '10 at 0:52 Ok. The problem sounds similar though. At the end of the day it's a RenderTransform on a container with something in it.Do you find that if you zoom in, out and back in on the same region that the second zoom is smoother?

– Andrew Bienert Mar 12 '10 at 1:05 Havent implemented re-zoom yet :) I will soon though and let you know, my suspicion is that it will be smoother though – Mark Mar 12 '10 at 1:13 Actually its still performing poorly even after zooming in and out again and again, no improvements made. So its not that its loading the resources for the first time (although that still might be true), but rather the entire scene is slow to scale.... – Mark Mar 12 '10 at 1:21 What happens as you reduce the number of components in your scene? – Andrew Bienert Mar 12 '10 at 1:37.

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