How to read 3DSolid in DXF files

[josefo 10]

Hi

When i do for example a cilinder and save like DXF, appears:

 

3DSOLID

 

And a code that i want to decode, Can somebody help me?

 

Where can i find the description

 

[font="]0[/font]
 [font="]3DSOLID[/font]
 [font="]  5[/font]
 [font="]154[/font]
 [font="]330[/font]
 [font="]1F[/font]
 [font="]100[/font]
 [font="]AcDbEntity[/font]
 [font="]  8[/font]
 [font="]0[/font]
 [font="]100[/font]
 [font="]AcDbModelerGeometry[/font]
 [font="] 70[/font]
 [font="]     1[/font]
 [font="]  1[/font]
 [font="]mnmoo mi m mi          [/font]
 [font="]  1[/font]
 [font="]ni ^ *+0;:,4 ^ *+0\^ [ nh ^ LR nmqoqnqgmo QK o  [/font]
 [font="]  1[/font]
 [font="]mjqlffffffffffffff fqfffffffffffffffj:rooh n:rono [/font]
 [font="]  1[/font]
 [font="]>,27:>;:- {rn rn _nn mnmqoqnqgmo |[/font]
 [font="]  1[/font]
 [font="]=0;& {rn rn {rn {m {rn {rn |[/font]
 [font="]  1[/font]
 [font="]3*2/ {rn rn {rn {rn {l {n |[/font]
 [font="]  1[/font]
 [font="],7:33 {rn rn {rn {rn {rn {k {rn {m |[/font]
 [font="]  1[/font]
 [font="]9><: {rn rn {rn {j {i {l {rn {h 90-(>-; ,6183: |[/font]
 [font="]  1[/font]
 [font="]9><: {rn rn {rn {g {f {l {rn {no 90-(>-; ,6183: |[/font]
 [font="]  1[/font]
 [font="]300/ {rn rn {rn {nn {nm {k |[/font]
 [font="]  1[/font]
 [font="]<01:r,*-9><: {rn rn {rn kqnkfhioofmlojhoj gqmjkjohffmnfjjkhl kqgmhofgojligofhji o o n no o o n V V o n no 90-(>-; V V V V |[/font]
 [font="]  1[/font]
 [font="]9><: {rn rn {rn {rn {nl {l {rn {nk 90-(>-; ,6183: |[/font]
 [font="]  1[/font]
 [font="]300/ {rn rn {rn {rn {nj {j |[/font]
 [font="]  1[/font]
 [font="]/3>1:r,*-9><: {rn rn {rn kqnkfhioofmlojhoj gqmjkjohffmnfjjkhl o o o rn rn o o 90-(>-;@) V V V V |[/font]
 [font="]  1[/font]
 [font="]300/ {rn rn {rn {rn {ni {k |[/font]
 [font="]  1[/font]
 [font="]<0:;8: {rn rn {rn {nm {nm {nj {nh -:-,:; {i {rn |[/font]
 [font="]  1[/font]
 [font="]300/ {rn rn {rn {rn {ng {g |[/font]
 [font="]  1[/font]
 [font="]/3>1:r,*-9><: {rn rn {rn kqnkfhioofmlojhoj gqmjkjohffmnfjjkhl fqijknfinohlinfjnn o o n n o o 90-(>-;@) V V V V |[/font]
 [font="]  1[/font]
 [font="]<0:;8: {rn rn {rn {nj {nj {nm {nh 90-(>-; {f {rn |[/font]
 [font="]  1[/font]
 [font="]<0:;8: {rn rn {rn {ni {ni {ng {nf -:-,:; {nn {rn |[/font]
 [font="]  1[/font]
 [font="]:;8: {rn rn {rn {mo o {mo iqmglngjlohnhfjgim {nj {mn 90-(>-; _h *1410(1 |[/font]
 [font="]  1[/font]
 [font="]<0:;8: {rn rn {rn {ng {ng {ni {nf 90-(>-; {nl {rn |[/font]
 [font="]  1[/font]
 [font="]:;8: {rn rn {rn {mm o {mm iqmglngjlohnhfjgim {ng {ml 90-(>-; _h *1410(1 |[/font]
 [font="]  1[/font]
 [font="]):-+:' {rn rn {rn {nh o {mk |[/font]
 [font="]  1[/font]
 [font="]:336/,:r<*-): {rn rn {rn kqnkfhioofmlojhoj gqmjkjohffmnfjjkhl o o o rn no o o n V V |[/font]
 [font="]  1[/font]
 [font="]):-+:' {rn rn {rn {nf o {mj |[/font]
 [font="]  1[/font]
 [font="]:336/,:r<*-): {rn rn {rn kqnkfhioofmlojhoj gqmjkjohffmnfjjkhl fqijknfinohlinfjnn o o n no o o n V V |[/font]
 [font="]  1[/font]
 [font="]/061+ {rn rn {rn nkqnkfhioofmlojhoj gqmjkjohffmnfjjkhl o |[/font]
 [font="]  1[/font]
 [font="]/061+ {rn rn {rn nkqnkfhioofmlojhoj gqmjkjohffmnfjjkhl fqijknfinohlinfjnn |[/font]
 [font="]100[/font]
 [font="]AcDb3dSolid[/font]
 [font="]350[/font]
 [font="]157[/font]

[ReMark 11]

josefo:

 

Welcome to the CADTutor forum. You've posted your question in a rather odd location (Introduce yourself). None-the-less, as regards your question, you must start with the basics. Read this first:

 

http://www.autodesk.com/techpubs/autocad/acad2000/dxf/general_dxf_file_structure_dxf_aa.htm

[ReMark 11]

Despite being written about Release 12 this extensively detailed article covers the structure of a DXF file.

 

http://www.martinreddy.net/gfx/3d/DXF12.spec

[ReMark 11]

Another article from AutoDesk regarding DXF file structure (Release 2000):

 

http://www.autodesk.com/techpubs/autocad/acad2000/dxf/index.htm

[Tiger 10]

I moved your question to a more appropraite forum, and added code-tags to your post to make it more readable. In the future, please post your questions in the most appropriate part of the forum.

[SEANT 10]

I recall some attempts at decoding the dxf reference of 3dSolids. Here is a thread hinting at that process from the VBA side of things. http://www.theswamp.org/index.php?topic=16754.0

 

Another option is to analyze the solids via the SAT file acquired via an acisout command. Here are a couple of links that discuss the capabilities of that option.

 

http://www.theswamp.org/index.php?topic=25855

 

and

http://www.theswamp.org/index.php?topic=25614

towards the bottom.

[bahrhamid 10]

Hi there,

I have a sample dxf file that includes a Box, a Cylinder, a Pyramid, a Sphere, a Torus, a Cone, and a Widget. I have loaded that ASCII file in MATLAB and looked at the ENTITY part of the dxf reference about 3dSolids to learn how to extract some details of objects. I couldn't find any group codes indicating the coordination of those objects. Could you please tell me in which part of the loaded dxf file I should find those details?

Best Regards,

Hamid.

[bahrhamid 10]

Hi,

I have forgotten to say that the objects are of type 3dSolid.

1) Does anybody know how to use group code value 350 that is a Soft-Owner ID/handle to history objects?

2) Does this handle refers to the point where additional data about entity 3dSoid objects are stored?

Please point me to the right froum where I can ask my questions if they are irrelative to the froum contents. Thanks.

 

Best Regards,

Hamid.