ACIS SAT file documentation?

[Anonymous]

Hello,

Does anyone know how a 3DSOLID object geometry can be read and
interpreted using Visual Lisp or VBA?

I was told that the format can only be accessed by exporting this into
an ACIS SAT file? If this is true, how do I read and understand the SAT
file? I need to know the points and lines that make up the 3DSOLID
geometry.

Any help is greatly appreciated.

regards
Rakesh Rao

[Anonymous]

go to spatial technolgies web site and get the sat guide book it describes
the structure of the file, autocad stores 3dsolid data in the same format
(entget) returns the entity data and the group 1 codes reflect each line in
the sat file. the strings are scrambled and can be translated to readable
text with this function:

;;; s = string to be translated to or from readable format or autocad entity
format
(defun tracis(s / n l)(setq n"")
(while(>(strlen s)0)(setq l(substr s 1 1)s(substr s 2)n(strcat n(if(=" "l)"
"(chr(- 79(-(ascii l)80)))))))
)


i have a small library of lisp acis functions to extract info from solids,
generate profiles along alignments, create surface models, it can be done
with autolisp

happy to ya



Rakesh Rao wrote in message
news:3BD816EF.7931A3F7@vsnl.net...
>
> Hello,
>
> Does anyone know how a 3DSOLID object geometry can be read and
> interpreted using Visual Lisp or VBA?
>
> I was told that the format can only be accessed by exporting this into
> an ACIS SAT file? If this is true, how do I read and understand the SAT
> file? I need to know the points and lines that make up the 3DSOLID
> geometry.
>
> Any help is greatly appreciated.
>
> regards
> Rakesh Rao
>
>