rmagick or other library for producing 3D pie chart

I am interested in making a 3D pie chart dynamically on my page depending on values pulled from my database. The chart开发者_JAVA技巧 would only be updated every few days, so I don't mind a process intensive task as I could cache the image. 2D charts and pie graph libraries seem to be everywhere, but are there any libraries (server side image magic, or client side javascript) that generate decent looking 3D pie charts?

Extra points if it integrates easily into Ruby-On-Rails.

An example of the type of chart I am looking for can be found on the bottom of this page.

I made this flash based plugin that supports Pie 3D, it's not rmagick, but it's easy to use and setup with Rails.