> 
> H.E. Day <The### [at] hedayfreeserverscom> wrote ...
> >     The "10000" is the "distance differential" (DD).  This is used to
> >     determine if there is an edge between two overlapping surfaces.
> >     In this case, I have effectively turned it off.  It seems to
> >     have a lot of trouble with curved surfaces.
> 
> Please describe the problems that you ran into.
> 

I've noticed that with find_edges, shadowed surfaces can take the color
set in PIGMENT_STATEMENTS. When DEPTH_THRESH is set to a little value,
instead the single colored line of the edge, we have a big colored area.
Setting a high value fix this problem, but another can arise. We may
loose some edges.

See my post on p.b.i. I used Ionic5 to illustrate the DEPTH_THRESH
problem, in B/W.

DEPerere

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