[Octave-bug-tracker] [bug #47974] Visual differences between gnuplot and OpenGL toolkits

[Dan Sebald]

Follow-up Comment #36, bug #47974 (project octave):

Could we apply the attached patch to get rid of view reset near the end of
plotting?  I don't know exactly what that was intended to solve...something
about pcolor...so commenting it out will make it easy to locate if doing so
breaks something.  Currently, that view reset causes the replot on rotation to
jump in a disjointed way to a completely different view.  Try "sombrero"
before and after the patch.

I notice that adding a colorbar:

sombrero
colorbar

makes the main plot (sombrero) non-rotatable.  What's happening here is that
__gnuplot_draw_now__ is using a multiplot to manually draw the colorbar on its
own.  After that, the colorbar is resizable in a 2D sense.  Selecting an area
on the sombrero is misleading in that it is really selecting something way in
the negative region of the colorbar and comes out white (empty).  There is a
gnuplot colorbox that can be configured, so why not that, I don't know. 
Another solution would be to plot the colorbar first and then the mainplot,
which would leave the main plot mouse active.


(file #37313)
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Additional Item Attachment:

File name: octave-gnuplot_no_view_reset-djs2016may30.patch Size:1 KB


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