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Re: [libredwg] 3DSolid ACIS->SAT->

From: Rodrigo Rodrigues da Silva
Subject: Re: [libredwg] 3DSolid ACIS->SAT->
Date: Fri, 19 Feb 2010 01:34:32 -0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.3a1pre) Gecko/20100127 Lightning/1.1a1pre Shredder/3.2a1pre

LibreDWG does not parse the ACIS chunk into a data struct. We only provide access to an array with the acis data. ACIS/SAT is another format, independent from DWG. I've just found out that its spec has been publicly released, and sounds like one could start a new library =]

I don't understand 3D modeling in AutoCAD at all. I'm not sure if the ACIS used inside DWG is compatible with other ACIS implementations.

Please explain this "decode" a bit further. I can't understand what you mean with that. You mean that the ACIS data is "encrypted"?

On 16-02-2010 05:20, Александр Ткаченко wrote:

The file DwgFormatSpec13-2007.rtf and fashey kodiravke in src / dwg.spec
all clear.
attracts me Acis Decryption of data using the decoding:
BITCODE_RC ** sat_data;

char decode (char c)
if (c == 32)
return 32;
return 159 - c;

by radiant like the file format sat. singing of the data to obtain the
correct figure?

or I do not go digging for data figures?

Rodrigo Rodrigues da Silva
GNU LibreDWG maintainer
FSF Associate Member #7788
PoliGNU - Grupo de Estudos de Software Livre da Poli/USP

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