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Subject: 
Re: User POV substitutions in L3P
Newsgroups: 
lugnet.cad.ray
Date: 
Wed, 8 Mar 2000 23:03:14 GMT
Viewed: 
3101 times
  
In lugnet.cad.ray, Chuck Sommerville writes:
> After playing with Ldraw, The first thing I wanted to do was learn the file
> format and write a converter to POV.  Then I found L3P, and was delighted.
> When I saw the minifigs with faceted heads, I investigated and learned about
> the triangle and quad lists in the primitives.  L3P does do some primitive
> substitution, but I was limited to whatever it knew about.  To address this I
> have written an L3P post processor.  The basic idea is that you put
> conditional compile commands and POV rendering commands in the Ldraw
> primitives and parts files.  Since the commands are stored in the comment
> fields, they are ignored by Ldraw and L3P, they end up in the final POV file.
> The post processor, reads the L3P generated file, and writes a new file with
> the POV primitive substitutions.  The new file is smaller, and better suited
> for POV rendering, since huge mesh commands are replaced with simple POV
> primitives.  I have been satisfied with the results. However, it does require
> editing the files in your P and Parts folders.  So far I have only added
> primitives to 2 parts, just for testing.
> 
> Is there any interest in this?
> 
> -Chuck Sommerville


It sounds as a good idea since the parts/primitives libraries will need
updates only when new l-cad updates are released. The current version of l3p
allthough really good still needs regular updates to keep up with the growing
parts libraries. Take a look at my shuttle's engines
(http://www.brickshelf.com/cgi-bin/gallery.cgi?i=2677) converted with l3p to
see how bad they look compared to other parts of the shuttle...

George



Message has 1 Reply:
  Re: User POV substitutions in L3P
 
George GeoMan wrote... (...) The good thing about L3P: it is INDEPENDENT of part updates. The not so good thing about L3P: some rounded parts look egdy/angular. /Lars (27 years ago, 9-Mar-00, to lugnet.cad.ray)

Message is in Reply To:
  User POV substitutions in L3P
 
After playing with Ldraw, The first thing I wanted to do was learn the file format and write a converter to POV. Then I found L3P, and was delighted. When I saw the minifigs with faceted heads, I investigated and learned about the triangle and quad (...) (27 years ago, 8-Mar-00, to lugnet.cad.ray)

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