CAD Development : 2987


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Subject:	Re: Hidden surface removal, and vertex order in part/primitive DAT files
Newsgroups:	lugnet.cad.dev
Date:	Sat, 2 Oct 1999 19:14:14 GMT
Viewed:	1011 times

Gary Williams: > Michael Lachmann wrote in message ... > > What if say a complient file contains anything starting with "0 CW". Any > > program dealing with this information could just scan for "0 CW*". We also > > could use a tag "0 AW*" if why ever the orientation is not clock-wice but > > anti-clockwice .... I think a program could deal with that also (just the > > sign is different !?). > > I retract my earlier suggestion. > > I'd prefer to test for '0 CW-compliant' than '0 CW*' because checking for an > exact string match is usually easier. Not supporting wildcards also > promotes consistency. Consistency is a Good Thing(tm). I still think using 0 FACE ( CW | CCW | DOUBLE-SIDED | UNKNOWN ) is most practical. Play well, Jacob ------------------------------------------------ -- E-mail: sparre@cats.nbi.dk -- -- Web...: <URL:http://www.ldraw.org/FAQ/> -- ------------------------------------------------

Message has 2 Replies:

		Re: Hidden surface removal, and vertex order in part/primitive DAT files
Jacob Sparre Andersen wrote in message ... (...) That works for me. I don't suppose there's an official standards-setting body of people charged with voting on extensions to the .dat format, is there? Maybe it's time to form one. -Gary (25 years ago, 2-Oct-99, to lugnet.cad.dev)

		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)

Message is in Reply To:

		Re: Hidden surface removal, and vertex order in part/primitive DAT files
Michael Lachmann wrote in message ... (...) I retract my earlier suggestion. I'd prefer to test for '0 CW-compliant' than '0 CW*' because checking for an exact string match is usually easier. Not supporting wildcards also promotes consistency. (...) (25 years ago, 2-Oct-99, to lugnet.cad.dev)

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