[ptx] hugin, auto selection of optimization values

[Bruno Postle]

On Fri 07-Jan-2005 at 09:36 +0000, Bruno Postle wrote:
> 
> I can't think of any circumstances where horizontal control points
> could control 'pitch' in any useful way, whereas they would
> control 'yaw' when using rectilinear output.

Actually, multiple pairs of horizontal control points can be used to
level the horizon.  So this needs to be more subtle:

If the output is Cylindrical or Equirectangular, more than one pair
of horizontal control points should optimise pitch but not yaw.

If the output is Rectilinear, they should optimise yaw but not
pitch.

Hope that makes sense, I can't figure-out how to detect output
panorama type, so somebody else will have to fix this one.

-- 
Bruno