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 CAD / Ray-Tracing / 601
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Subject: 
Re: L3P user primitive substitution
Newsgroups: 
lugnet.cad.ray
Date: 
Mon, 4 Dec 2000 17:45:48 GMT
Viewed: 
1828 times
  
Steve Bliss <steve.bliss@home.com> writes:

For official parts, what I'd *love* to do is to build a separate
library of POV-Ray parts that are made to be compatible with LDraw
settings, in terms of placement, orientation, and coordinate
system.  These parts would match their LDraw counterparts in
positioning, but wouldn't have to have anything in common at the
code level.  They could be much higher quality (rounded edges, true
curved surfaces, etc., etc.).  This would allow people to create
models in LDraw, but then use the POV-Ray parts for rendering.

Lutz Uhlman's LGEO library does just this with some exceptions.  It is
a high quality library of many of the parts from LDraw in POV-Ray.  It
has a slightly steeper learning curve as compared to using L3P but I
would still recommend it to anyone who likes to do high quality
photorealistic renderings.

The exceptions are that LGEO uses a different coordinate system and
that it is not complete.  The first can easily be remedied by using a
transformation matrix, the second by using L3P to fill in the missing
parts.

LGEO is also very small in size.  And rendering a POV-Ray source file
with LGEO parts is roughly as computer intensitive as using L3P.

Fredrik



Message is in Reply To:
  Re: L3P user primitive substitution
 
(...) This is a very cool feature, for anyone 'rolling their own'. I'd definitely recommend it for including scanned/bitmap images (like printed tiles), as the POV-Ray versions will be far superior to an BMP2DAT2POV-Ray conversion. For official (...) (24 years ago, 4-Dec-00, to lugnet.cad.ray)

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