POV-Ray : Newsgroups : povray.advanced-users : Grid artifact in f_noise3d isosurface : Re: Grid artifact in f_noise3d isosurface Server Time
16 Jun 2024 22:45:49 EDT (-0400)
  Re: Grid artifact in f_noise3d isosurface  
From: Warp
Date: 22 Jun 2002 14:12:38
Message: <3d14be16@news.povray.org>
Philippe Debar <phd### [at] belgacomnet> wrote:
> Toying with isosurfaces (pov v3.5RC6), I found a quite visible grid
> artifact... I don't know what to make of it. Should I make a bug report ? It
> is so basic [just function{-z+f_noise3d(x,y,z)}] that I find it very
> unlikely that it is unknown.

  This is known to the team, so no need to report it.
  The exact reason for this is not clear (it might not be a bug at all, but
the noise_generator 3 might just produce that; better alternatives may be
studied).
  Use noise generators 1 or 2 instead (I think it was f_noise_generator()
if you want to use another noise generator instead of the default, which
is 3).

-- 
#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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