I wrote this project in response to a question on the Microsoft Silverlight forum which asked How can I draw a 3D rotating object that a curve := y=f(x) rotates around z-axis by 360 degrees?.
Since I already had some 3D code from the Silverlight 3D Dice Simulator I wrote, I set about answering this question. I extracted the 3D calculation parts of the dice simulator into a separate project so I could reuse it for this.
The remaining code needed was to calculate the radius of the curve at regular intervals along the x-axis, use a bit of trigonometry to rotate this around the x-axis, and generate polygons joining the points together.
I think the effect is quite pleasing, although it would be even nicer if it could calculate the vertices more quickly to give a smoother curve effect. If you don't mind the animation being slower, go to the Settings class of the source code and increase the XSteps and ThetaSteps values.