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

[Rik]

Follow-up Comment #19, bug #47974 (project octave):

@Dan: I applied your patch for "visible" attribute on axes here
(http://hg.savannah.gnu.org/hgweb/octave/rev/6cf6bc451eeb).  I changed the
commit message just slightly.  First, to include the bug number that the patch
was written for, second, we don't need to be verbose and repeat which function
was modified if it is an m-file and the function is the same as the name of
the m-file.

The next demo which looks interesting is isosurface.  There are two things I
see.  First, the length of the Z-axis onscreen is different from the X and Y
axes.  This creates a squashed ellipsoid, rather than a sphere.


demo isosurface
pbaspect
=> [5 4 4]


This is rather odd, because this says the x-axis should be 1.25X the Y or Z
axes.  Instead, it looks more like [4 4 3] because the Z-axis from -1 to +1
takes up about the same as 1.5 X-axis units.

The second issue is the box.  In the OpenGL toolkits, when you turn off the
box you turn off everything but the X, Y, and Z axes (3 lines).  In gnuplot,
only the front lines are turned off.  The perspective axes lines "behind" the
object are still there.


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