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 CAD / Development / 3018
3017  |  3019
Subject: 
Re: Hidden surface removal, and vertex order in part/primitive DAT files
Newsgroups: 
lugnet.cad.dev
Date: 
Mon, 4 Oct 1999 16:27:30 GMT
Viewed: 
727 times
  
On Mon, 4 Oct 1999 04:21:56 GMT, "Michael Lachmann" <m.lachmann@xpoint.at>
wrote:

0 FACE ( CW | CCW | DOUBLE-SIDED | UNKNOWN )

Is this the standard now, or at least could we make it the standard ????

That's what we're doing now--figuring out what the standard should be.
Both the function and the syntax.

But "standard" is an odd term in this case.  In my mind the LDraw standard
is defined as "code which is recognized and interpreted by LDraw".[1]
Since ldraw.exe can no longer be enhanced, the standard-standard is pretty
much set in stone.

What we can talk about is a standard for 'extended LDraw'.  In this case,
it's an extension which is backwards-compatible with LDraw (because LDraw
can ignore the extra information).

Until this point, there has been no serious discussion of extending the
LDraw 'language'.  There was discussion of a new version of LDraw, referred
to as "LDraw II".  And LDLite and LDAO both recognize some custom
extensions, via meta-statements (LDLite's are more generally useful that
LDAO's).

Steve



Message has 1 Reply:
  Re: Hidden surface removal, and vertex order in part/primitive DAT files  [DAT]
 
(...) Forgot the footnote: 1- There's an interesting distinction between 'valid' and 'well-formed' contructions. LDraw will allow line-breaks as whitespace in commands, so: 1 16 0 0 0 1 0 0 0 1 0 0 0 1 3001.dat is valid, but it's not well-formed. (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)

Message is in Reply To:
  Re: Hidden surface removal, and vertex order in part/primitive DAT files
 
Jacob Sparre Andersen wrote in message ... (...) also (...) but (...) the (...) an (...) Is this the standard now, or at least could we make it the standard ???? Mike (25 years ago, 4-Oct-99, to lugnet.cad.dev)

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