In reply to ethan.

To copy the animation into PPT, you can left-click on the animation image. It will appear in a separate tab. Then right-click and select Save As to store the GIF to your local computer. Then drag and drop into PPT.

The animation was created by using PROC SGPLOT, using ideas that are explained in a blog post by Sanjay. Because the HDR post was already so long, I did not spend much time explaining it, but I thought it made for a nice visualization.