Dear RP-ML,
Please note that the specs reported by Materialize and TNO for including
color information in StL files are completely different and incompatible.
According to the information posted on the list and repeated below, TNO
stores the colors in the order BGR, followed by a bit that is always set.
Materialize stores the colors in the order RGB, followed by a bit that
represents whether to read the local color data or use a default value in
the file header.
Better be careful if you're using a color-coded StL file to know which
spec is being followed.
Best regards,
Marshall Burns
President, Ennex Corporation
Marshall@Ennex.com
Los Angeles, USA, (310) 397-1314
http://www.Ennex.com
----- Original Message -----
From: <J.vandenHout@ind.tno.nl>
To: <Marshall@ennex.com>; <rp-ml@bart.lpt.fi>
Sent: Monday, November 20, 2000 02:19
Subject: RE: Color in StL
> At TNO we do use the same format.
[snip]
** This was referring to: **
> ----- Original Message -----
> From: "Marcus Joppe" <mjoppe@marcam.de>
> To: <rp-ml@bart.lpt.fi>
> Sent: Friday, November 17, 2000 09:29
> Subject: Re: stl files
>
[snip]
> > For every triangle the colour information is in the attribute
> count (16
> bits).
> > bit 15 always 1 (to distinguish from normal stl files)
> > bit 10 to 14 intensity level for red (0 to 31)
> > bit 5 to 9 intensity level for green (0 to 31)
> > bit 0 to 4 intensity level for blue (0 to 31)
> > In this way there are 32768 different colours.
[snip]
----- Original Message -----
From: <Pieter.Bourgaux@materialise.be>
To: <rp-ml@bart.lpt.fi>
Sent: Monday, November 20, 2000 02:03
Subject: Re: stl files
[snip]
> We store the color of the triangle in the 2 bytes that are unused.
> ...
> Below you'll find a link where you can find the
> description of this color STL-format.
> ftp://ftp.materialise.be/download/Magics/Colorstl.doc
[snip]
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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