How to draw a 3D donut chart in OpenGL?

Posted by paulbeesley on Stack Overflow See other posts from Stack Overflow or by paulbeesley
Published on 2010-04-09T11:07:13Z Indexed on 2010/04/09 11:13 UTC
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I would like to draw a chart in OpenGL similar to the donut graph at the bottom-right of this example.

I have experience with drawing 2D charts such as the main chart in the example but what confuses me about the one I want to draw is the correct type of primitive to use when drawing the 3D chart. I have considered using GL_QUAD_STRIP and GL_POLYGON but neither seem quite right for the task. Where should I begin?

I will be using JOGL with Java to draw the chart, if that helps at all. Also, I don't necessarily need to extrude certain slices of the chart as shown in the example.

Infographics Example

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