Subject:
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Re: Hidden surface removal, and vertex order in part/primitive DAT files
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Newsgroups:
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lugnet.cad.dev
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Date:
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Sat, 2 Oct 1999 14:15:02 GMT
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Viewed:
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742 times
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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).
Also, what if 'CW' was someone's initials, and they wanted just their
initials to appear in the file? It could mistakenly be considered
clockwise-compliant. :)
> So if we can define this as a standard, I will build this into MLCad and
> Version1.5 and above could make use of this feature (which should speed up
> drawing a little bit). By the way any idea how many parts already have this
> tag?
My LDraw folder has seven DAT files with '0 CW*', none with '0 CCW*', and 30
with '0 not CW*'.
The seven '0 CW*' files are:
PARTS\973P14.DAT
PARTS\973P15.DAT
PARTS\973P16.DAT
PARTS\973P17.DAT
PARTS\973P18.DAT
PARTS\973P52.DAT
PARTS\578.DAT
Note that 578.DAT contains a suspicious comment :)
I think my part files are current.
-Gary
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