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 CAD / Development / 9785
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Subject: 
Re: Status of BFC
Newsgroups: 
lugnet.cad.dev
Date: 
Wed, 4 Aug 2004 03:29:15 GMT
Viewed: 
1472 times
  
In lugnet.cad.dev, Wayne Gramlich wrote:
In lugnet.cad.dev, Chris Dee wrote:
In lugnet.cad.dev, Travis Cobbs wrote:
In lugnet.cad.dev, Gunnar  Lindholm wrote:
Hi there.
I just found this about BFC. As I understand it, it's intended to be used to
reduce the amount of polygons etc. in the modell that is renderd, in some
way?
If I've understood this correctly, is thisthen used in any current tools for
rendering? Or do tools like Pov-Ray have some kind of this already?

I'll be supporting it in the next major LDView version (3.0).  I really don't
have an estimated completion date for this at the moment, but I at least hope to
have it out before the end of the year.  There could be minor LDView updates
before the 3.0 release; they definitely won't have BFC support.

It's worth mentioning that on my ATI Radeon 9700 Pro, making use of the BFC
information actually slows down rendering.  On a GeForce 3, it provides a slight
speedup.

At this point, a fair number of the parts in the part library are BFC-certified,
but there are a large number aren't.  Part of the BFC spec requires
BFC-compliant renderers to only cull back-faces on parts that are actually
compliant, so non-BFC-certified parts will still look fine.

--Travis Cobbs

Some part authors have been making major advances in getting the official
library BFC compliant - notably Guy Vivan has been submitting BFCed files almost
daily in recent months.

These revised parts are in the Parts Tracker waiting for review. More reviewer
activity would be most welcome.

Chris

Alll:

Could somebody please tell me where the BFC documentation is?  I've
read the specifications at LDraw.Org and I see no mention of it.

-Wayne

It's listed.  It's on the Specifications page under the Standards heading with
the title of "LDraw Language Extension for Clipping (BFC)".  Here's a direct
link:
http://www.ldraw.org/article/217

-Orion



Message has 1 Reply:
  Re: Status of BFC
 
(...) -Wayne (20 years ago, 4-Aug-04, to lugnet.cad.dev)

Message is in Reply To:
  Re: Status of BFC
 
(...) Alll: Could somebody please tell me where the BFC documentation is? I've read the specifications at LDraw.Org and I see no mention of it. -Wayne (20 years ago, 4-Aug-04, to lugnet.cad.dev)

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