Hello,

The way I see is...you could:

* Use a "super-fisheye" camera placed at the location of the antenna so it
can see in all directions. This would be a fisheye camera with an angle of
360.
* Use no_image on all of the objects so the camera doesn't see the objects,
just the shadows they create.
* Use a hollow sphere to surround the objects and "catch" the rays.
* Use +q0 in the command line so the pixels will be either white or black.

Since the rays will be evenly distributed along the inner surface of the
hollow sphere, you can calculate the percent blocked by (black
spots)/(bright spots). Heheh...you could use transparency to simulate a
lossy path...but then you would have to use a higher quality setting.

Since the angle is proportional to the radius from the center of the image,
I don't believe you'll have to apply any corrections before you sum up the
bright and dark pixels within the circle. Can anyone confirm this?

I've posted a sample image and code in binaries.images.

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