Hi
In FG-2.0 Tim Moore modified CameraGroup.cxx to handle multiple spherical
distortion cameras. During the FG-2.2 development cycle I extended that code to
enable creation of a warping mesh as a file and the ability to install the mesh
at init time. (See the March 2011 newsletter)
Curt requested that I send the code to Tim for a peer review so he could
incorporate the changes into the baseline. It appears Tim never followed up on
that request for whatever reason and the changes were never made. Never having
received any feedback, I was surprised when looking at FG-2.6 to see that the
code was not there.
The really unfortunate aspect is that the changes made in FG-2.6 break the
warping code I provided for 2.2. Can't blame the author. Went back and
incorporated the code in 2.4 and it works just fine as a simple "drop-in" for
CameraGroup.cxx replacing what is in the baseline. Unfortunately, that will not
work for 2.6 and beyond. Looks like the zooming code is the "culprit". It might
just be the case that the two methods are not compatible and cannot coexist. So
either there is a compile option to pick one or the other or a logic selection
during runtime. OTOH, if they could be made to coexist, it might be a nice
feature to provide individual zoom control of multiple cameras. Could be used
as an aid in aligning the collimated display for multiple projectors.
What I've been able to discern so far, is that 2.6 will work for multiple
projectors, but only work with a single camera for a distortion mesh. Perhaps
there is a fix, but don't see it ATM.
I could hack a solution for my setup, but that is NOT a long term solution or
fix. Gene Buckle and I are trying to come up with a hardware and software
design for using FlightGear in his DIY collimated display system. The plan is
to make the software run on both Linux and MS window systems and support both
small to medium and large full scale cockpits.
We need to fix the problem, just not sure best way to proceed.
John
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