Circle loading animation

Question

I\'m trying to create Apple\'s OS X circle loading animation.

What I h

Answer 1

Here's my effort. The conical gradient is an embedded bitmap image extracted by calculating the maximum value of each pixel in the animated GIF posted by the OP. A semi-opaque black windmill pattern is superimposed on top of that and animated, and a blur filter gets rid of the JPEG artefacts.

(Edit: Added a reflective highlight to make it look a bit more 3D)