autopano-sift-c and "foreign" project files

Hi

While looking into the feasibility of using autopano-sift-c with
PTAssembler, I discovered that APSC cannot load file specifications
from either PTAssembler or PTGui project files.  This is too bad,
because that is the preferable way of using APSC.  Not only does it
save retyping the file specifications, and automatically invoke the
stereographic mode for fisheye lenses, but also the .pto supplies
field of view info that APSC needs (enabling the processing of multi-
lens image sets, for example).

The idea was that APSC should be able to get the needed file info from
any PanoTools compatible script (including Hugin, PTAssembler and
PTGui project files).  It outputs a pretty generic PT script
containing the control points.  If it did load a script, the output
also contains source file specs, and is a usable stand-alone Hugin
project file.

The second part works for Hugin and PTAsm.  Hugin 0.7 can still run
from an APSC output script;  PTAssembler 5 can't use it as an original
project file, but will happily load control points from it.  PTGui 8
won't do either.

But the first part is not working because both PTGui and PTAsm project
files now store the file names in "comment lines" of the form #-
imgfile width height "pathname" (hugin.pto's still put those data on
the  i or o lines, as in PanoTools).  So APSC can't see any files in
those scripts.

If nobody has an objection, I intend to patch APSC so that it can load
PTAssembler and PTGui scripts too.  Please post any other suggestions
for improvements or fixes; I might do those at the same time.

Regards, Tom


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