Thorsten Froehlich <tho### [at] trfde> wrote:
:> Black outline in smooth meshes
:> (The outline of smooth meshes exhibit black dots or areas (which go away
:> with double_illuminate))
:> http://news.povray.org/3bf6794e$1@news.povray.org

: Afaik double_illuminate is supposed to be used in this case.  The issue of
: "inverted normals" is a general problem and not specific to this object as it
: has been discussed elsewhere (not sure in which thread).  Reference should be
: given to that thread so it can be added to the list of known bugs while this
: one can be kept as a special case of a more general problem.

  It was me who studied and discussed this problem in my report about wrong
smooth heighfield lighting (inversion of normals problem). I also posted a
summary of my findings as a followup to this thread.

  As I mentioned, it's most probably something that will be most easily fixed
with a full rewrite of the rendering engine in pov4. Fixing it in pov3.x would
be just a dirty hack and lot of work. (Of course this is only my opinion based
on studying the source code; I'm not a developer, so I can't speak for sure.)

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -

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