Re: [Gnuplot-info] maxima + gnupolot: 3D rendering bug?

[Hans-Bernhard B. <HBB...@t-...>]

On 07.12.2010 16:42, Stanislav Maslovski wrote:

> So, I solved this issue by patching pm3d.c:pm3d_depth_queue_flush()
> so that sorting of quadrangles was done based on the average depth of
> 4 corners.

Unfortunately that's not really a solution.  There is no particular 
reason to prefer one sorting criterion over the other.  Painter's 
algorithm is plain and simply wrong --- no matter which property you 
sort by.  If it appears to work sometimes that's by happenstance, not by 
design.