Discussion for developers and users of the Lib3ds programming library

yaoyansi | 2 Nov 2009 06:20

About vertex normal and incandescence data in 3ds

hi, all
I want to write a 3ds exporter for maya , but I don't know how to write the
vertex normal to 3ds . Does 3ds format contain vertex normal ?
Another question is that Maya material has incandescence , how to write incandescence to 3ds file?

Thanks.

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John Tsiombikas | 3 Nov 2009 00:48

Re: About vertex normal and incandescence data in 3ds

On Mon, Nov 02, 2009 at 01:20:53PM +0800, yaoyansi wrote:
> 
> I want to write a 3ds exporter for maya , but I don't know how to
> write the
> 
> vertex normal to 3ds . Does 3ds format contain vertex normal ?

No, unfortunately the 3ds file format does not contain vertex normals.

--

-- 
John Tsiombikas
http://nuclear.sdf-eu.org/

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kefrens | 12 Nov 2009 23:34

Re: About vertex normal and incandescence data in 3ds

yaoyansi pisze:

hi, all
I want to write a 3ds exporter for maya , but I don't know how to write the
vertex normal to 3ds . Does 3ds format contain vertex normal ?
Another question is that Maya material has incandescence , how to write incandescence to 3ds file?

Thanks.

Howdy
3ds uses "smoothing groups", that is each face has a bitfield which tells how vertex normal should be "shared" between faces.

Greetings
Rafał

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Miles Bader | 19 Nov 2009 09:30

Re: About vertex normal and incandescence data in 3ds

kefrens <kefrens@...> writes:
> Howdy
> 3ds uses "smoothing groups", that is each face has a bitfield which tells how
> vertex normal should be "shared" between faces.

... and which is quite annoying to implement.

-Miles

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