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 CAD / Ray-Tracing / 1043
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Subject: 
RE: Minifig Heads
Newsgroups: 
lugnet.cad.ray
Date: 
Wed, 21 Nov 2001 19:43:42 GMT
Reply-To: 
<BRAM@nomorespamPO.CWRU.EDU>
Viewed: 
3765 times
  
Joel Hoornbeek writes:
> I'm still enough of a novice to not know how to do that.  Is
> it something you do in the .dat file stage?  Do in the .pov
> file?  I seem to lear the best by example, so if you know of
> someone who has posted a file which demonstrates this, I'd
> like to look at it. Thanks!

In general, improved results for any rendering are accomplished by
editing the POV file.  Each LDRAW part gets converted to a POV 'object'
when you run L3P.  If you use -lgeo, then the object is simply a
transformation of the LGEO object for the part stored in an INC
(include) file.  Every time a part gets used in a model, it is called,
using a line something like this:
object { _3626b_dot_dat transform <...> material { Color14 } }
If that's the minifig head you want to add a face to, then change it to:
object { _3626b_dot_dat
         material {
           Color14
           texture {
             pigment {
   image_map {
                 gif                 // gif,tga,iff,ppm,pgm,png
                 "myface.gif"        // extension must match to keyword
above
                 map_type 2          // cylindrical map
               }
               scale <1,24,1>      // scale to the height of the head
             }
           }
         }
         transform <...>
       }

You may have to add rotate statements after the scale to get the face to
face the right direction.  For more on image maps see:
http://nucwww.chem.sunysb.edu/povray_doc/pov298.html
http://nucwww.chem.sunysb.edu/povray_doc/pov355.html
HTH,
--Bram


Bram Lambrecht
bram@cwru.edu
www.bldesign.org



Message has 2 Replies:
  Re: Minifig Heads
 
Which version of pov are you useing? 3.1 or 3.5? I'm getting a few errors with that. Gary Bram Lambrecht <bram@cwru.edu> wrote in message news:000301c172c4$d3...1681@bl... (...) (25 years ago, 22-Nov-01, to lugnet.cad.ray)
  Re: Minifig Heads
 
(...) I'm using POV 3.1, but I didn't check the code either. There may be an issue with using Color14 *and* the image_map in the same material. Also, make sure the image exists in the correct location and that the '...' in 'transform <...>' is an (...) (25 years ago, 22-Nov-01, to lugnet.cad.ray)

Message is in Reply To:
  Re: Minifig Heads
 
I'm still enough of a novice to not know how to do that. Is it something you do in the .dat file stage? Do in the .pov file? I seem to lear the best by example, so if you know of someone who has posted a file which demonstrates this, I'd like to (...) (25 years ago, 21-Nov-01, to lugnet.cad.ray)

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