Angular gradients in JGraphics

Hi there,

what’s the best way to create angular gradients in JGraphics?
With angular gradients I mean color that smoothly fades according to a certain angle.

For instance, let’s imagine to have a circle, of which 0 degrees is the topmost point and 90 degrees the rightmost point.
I would like a gradient that smoothly sweeps from 0 to 90 degrees.

This link might explain you better what I mean:

http://iit.bloomu.edu/vthc/Photoshop/DRAWING/gradients.htm

Does JGraphics offer a set way to do that like it happens for linear and radial gradients?

Any advice highly appreciated.

Thanks.

- Luigi