I noticed that rendering patterns in POV-Ray 3.1 and 3.5 give different
results.  Rendering in POV-Ray 3.5 with the following texture (as given by
Ricky[Kitty]5 in povray.binaries.images under 'more glass balls...') yields
a very soft pattern to objects this material is applied to.  But when
rendered in POV-Ray 3.1, the pattern appears much more defined.  Why the
change?  Is there any convention to use so that a scene with materials
intended to be rendered in POV-Ray 3.1 can be rendered in POV-Ray 3.5 with
the same look, or is it just a matter of manually tweaking?
I've posted images in povray.binaries.images comparing the same pattern
rendered in 3.1 and 3.5.

#declare Material1 =
   material  // Material1
   {
      texture
      {
         pigment
         {
            color rgb <1.0, 1.0, 1.0>
         }
         normal
         {
            bozo , 0.5
            turbulence 0.5
            ramp_wave
         }
         finish
         {
            ambient 0.0
            diffuse 0.6115
         }
      }
   }

-Paragon

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After reading more on documentation, I've learned that MegaPOV attempted to
fix the way POV-Ray rendered surface normals, and this is the reason for the
inconsistencies when trying to render the patterns in POV-Ray 3.1 and 3.5
(I've also read about noise_generator, but this was not as helpful).  So
knowing this, I guess I'll be content with using #version 3.1 to get the
results I want.  Though I'm still curious on how I can get better results
with those patterns without using #version 3.1...

-Paragon

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Paragon <use### [at] hostcom> wrote:
: (I've also read about noise_generator, but this was not as helpful).

  How so? To me the documentation seems quite clear in this issue.

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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Yes, but the textures still render differently.  I use #noise_generator 1
but still yields different results.  I posted again in
povray.binaries.images comparing POV-Ray 3.1 and 3.5 using #noise_generator
1.

-Paragon

"Warp" <war### [at] tagpovrayorg> wrote in message
news:3ba30a90@news.povray.org...
> Paragon <use### [at] hostcom> wrote:
> : (I've also read about noise_generator, but this was not as helpful).
>
>   How so? To me the documentation seems quite clear in this issue.
>
> --
> #macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
> rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
> ],13),8)-3,10>#end blob{N(array[6]{11117333955,
> 7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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Paragon <use### [at] hostcom> wrote:
: I use #noise_generator 1

  Where did you get that # from?

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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> : I use #noise_generator 1
>
>   Where did you get that # from?

I got that from the POV-Ray 3.5 documentation.  In 2.6.1, it states

"You can also choose noise_generator 1, which behaves like the noise in
POV-Ray 3.1 and earlier,"

-Paragon

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Paragon wrote:
> 
> > : I use #noise_generator 1
> >
> >   Where did you get that # from?
> 
> I got that from the POV-Ray 3.5 documentation.  In 2.6.1, it states
> 
> "You can also choose noise_generator 1, which behaves like the noise in
> POV-Ray 3.1 and earlier,"

He was referring to the '#' symbol that you showed in your example.

-- 
Ken Tyler

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Paragon <use### [at] hostcom> wrote:
:>   Where did you get that # from?

: I got that from the POV-Ray 3.5 documentation.  In 2.6.1, it states

  It doesn't say anything about a # character before the command.

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

Post a reply to this message