Re: lenght lists in pfa-file

From: Benedikt Kessler (bjk++at++munich.sgi.com)
Date: 12/07/2000 05:47:40

• Next message: Roy Ruddle: "PfChannel bug, I think"
• Previous message: Rejean Chartrand: "LOD range values ..."
• In reply to: Henrik Feidner: "lenght lists in pfa-file"

Hi!

If you have a geoset containing triangle strips (or fans) you nee a
length list. It tells you the length (in vertices) of each individual
triangle strip in your geoset.

In your example below you have 4 triangle strips; the first and secont
strip only contain a single triangle each, the next strip contains two
triangles (4 vertices) and the last strip has 8 triangles (10 vertices).

The length list is referenced by the geoset (later in the pfa file).

More informations can be found in the pfGeoSet manpage.

Bye! Benedikt

Henrik Feidner wrote:
>
> Hi,
>
> does anybody know what the "Length Lists" in the pfa-File are doing?
> I think they must be related to the Vertex Lists!
> The sum of the 4 rows in "Length List 0" is 20 and the "Vertex List 0" has
> 20 rows.
>
> Bsp.:
> #---------------------- Length Lists
> 4 1
> ##---------------------- Length List 0
> 4 0 -1
> 3
> 3
> 4
> 10
> #---------------------- Vertex Lists
> 5 1
> #---------------------- Vertex List 0
> 20 0 -1
> 10 -5 30
> -10 -5 0
> 10 -5 0
> -10 5 30
> 10 5 0
> -10 5 0
> 10 -5 0
> 10 5 30
> 10 -5 30
> -10 -5 30
> 10 -5 30
> -10 -5 30
> -10 -5 0
> -10 5 0
> 10 -5 0
> 10 5 0
> 10 5 30
> -10 5 30
> -10 -5 30
> -10 5 0
> #---------------------- Color Lists
>
> thanks
>
> henrik
>
> --
> Sent through GMX FreeMail - http://www.gmx.net
>
> -----------------------------------------------------------------------
> List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com

-- 
+---------------------------------+----------------------------------+
|Benedikt J. Kessler              | Silicon Graphics GmbH            |
|Professional Services            | Am Hochacker 3 - Technopark      |
|SGI                              | 85630 Grasbrunn-Neukeferloh, FRG |
|    ---  __o       ,__o          |                                  |
| ------_ \<,_    _-\_<,          | Phone: (+49) 89 46108-366 or -0  |
|----- (*)/ (*)  (*)/'(*)         | Fax:   (+49) 89 46107-366        |
+---------------------------------+----------------------------------+
|E-Mail: bjk++at++sgi.com    Web (private): http://reality.sgi.com/bjk    |
|   Web: http://www.sgi.de/dienstleistungen/                         |
+--------------------------------------------------------------------+

• Next message: Roy Ruddle: "PfChannel bug, I think"
• Previous message: Rejean Chartrand: "LOD range values ..."
• In reply to: Henrik Feidner: "lenght lists in pfa-file"

This archive was generated by hypermail 2b29 : Thu Dec 07 2000 - 05:47:53 PST

This message has been cleansed for anti-spam protection. Replace '++at++' in any mail addresses with the '@' symbol.