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 CAD / Development / 9782
9781  |  9783
Subject: 
Re: Status of BFC
Newsgroups: 
lugnet.cad.dev
Date: 
Tue, 3 Aug 2004 07:28:34 GMT
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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



Message has 2 Replies:
  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)
  Re: Status of BFC
 
(...) How far 'percent wise' is the standard library bfc? In about 2 months i'm starting work on a rendering engine for LD4DModeler 2. I was hoping to 'assume' all parts are BFC so I can implement simple lighting. (20 years ago, 19-Feb-05, to lugnet.cad.dev)

Message is in Reply To:
  Re: Status of BFC
 
(...) 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 (...) (20 years ago, 2-Aug-04, to lugnet.cad.dev)

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