[gnuastro-devel] [bug #50120] Print an error when polygon is concave

[Mohammad Akhlaghi]

URL:
  <http://savannah.gnu.org/bugs/?50120>

                 Summary: Print an error when polygon is concave
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Mon 23 Jan 2017 01:47:45 AM JST
                Category: ImageCrop
                Severity: 3 - Normal
              Item Group: Output not reasonable
                  Status: Postponed
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

    _______________________________________________________

Details:

Currently ImageCrop's `--polygon' mode only accepts convex polygons
<https://en.wikipedia.org/wiki/Convex_polygon>. 

So, when the user gives a concave polygon, the result is not reasonable, for
example this command (when run in the `tests/' directory after `make check):


astimgcrop --imgmode --polygon=114,29:243,174:468,21:457,440:249,261:82,457
snimage.fits


We have defined task #13658 to allow ImageCrop to work on Concave polygons
too, but until that is implemented, an error message should be printed letting
the user know this limitation and not make the output.




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?50120>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/