[Octave-bug-tracker] [bug #33180] Print command in fltk not working on "unvisible" figure and then crashing

[foehler]

Follow-up Comment #2, bug #33180 (project octave):

I agree that off screen plotting may not be that useful(I didn't think about
the X server requirement) and that off-screen openGL is tricky.

Concerning that last bit, off-screen openGL could be replaced by a proper 3D
file output (from the OpenGL objects). An external renderer, such as Blender,
Yafray (...) could be then used to render the graphics. 

Concerning the bug report, I think that even if the print command doesn't
print it should not mess up the object so that the next 'visible'  = 'on'
command fails. 
(it is not the print that fails but the set cmd, calling to display again). At
best print when "visible"="off" should do nothing harmful. 

So I would consider it a (very minor) "bug report", coupled with a large
"feature request" :-)



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