Le 14/03/2011 08:56, JohnnyCatch a écrit :
> Does anybody has figured out the location of the (curved) image plane of a 180°
> fisheye projection camera? So for a upward looking fisheye at height z = 0 -
> where is the image plane and what is the handling of scene objects which are in
> between the camera location and the image plane?

The image plane is like the cake of portal.

So far, for most camera's types (orthographic is an exception, as well
as cylinders and maybe the new mesh camera too), the origin of each ray
is the camera's location.

For 3.6 sources, have a look in render.cpp at create_ray function.
(the default is to assign FCL (Frame.Camera->Location) to the
Ray->Initial at the beginning of the function. Unless overridden by the
camera's code, it remains as set. Fisheye does not override it.)

Have a nice day.
-- 
Software is like dirt - it costs time and money to change it and move it
around.

Just because you can't see it, it doesn't weigh anything,
and you can't drill a hole in it and stick a rivet into it doesn't mean
it's free.

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