[Sidefx-houdini-list] model conversion

Larry Giunta larry at gcreativestudios.com
Tue Jul 5 16:47:24 EDT 2011


Thanks Jed. All great stuff .... and very much appreciated!!

Best,

Larry




On Jul 5, 2011, at 3:51 PM, Jed Schwartz wrote:

> We use Polytrans and its great, Rhino also does a good job  
> converting CAD files to .obj but I don't think it supports quite as  
> many formats as Polytrans, but I think it does run native on the  
> Mac. You might have problems with the normals on the PT  
> converted.obj files.
>
> gwavefront, which is used by Houdini to do .obj -> .bgeo  
> conversion, by default keeps shared points shared. This is a  
> problem because Houdini doesn't have vertex normals. To work around  
> this, manually convert with
>
> gwavefront -u test2.obj test2.bgeo
>
> This will result in a .bgeo with unique points that have the proper  
> normals.
>
> Make sure you leave the point normals alone, do NOT recompute point  
> normals in translation sops or you'll have problems with the look  
> of your surfaces-
>
> Hope this is helpful!
>
>
> Jed-
>
>
> On Jun 29, 2011, at 6:38 PM, Larry Giunta wrote:
>
>> Thanks very much for the feedback Al.
>> Very helpful info .... and much appreciated.
>>
>> Larry
>>
>>
>> On Jun 29, 2011, at 2:54 PM, Al Curatolo wrote:
>>
>>> Hi Larry,
>>>
>>> Polytrans works fine in virtual PC or vmware. In the past I've  
>>> used it to get
>>> data out of Houdini to various formats and convert some old  
>>> Electric Image
>>> FACT format models into obj for import to Houdini successfully.
>>>
>>> Unless things have changed recently you can't convert to Houdini  
>>> geo/bgeo as a
>>> destination.  The OBJ export works well with Houdini.  I don't  
>>> have the DCC or
>>> CAD Packs so I can't speak to them.  Overall a very solid piece  
>>> of software.
>>>
>>> Al
>>>
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>>
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>
> Jed Schwartz
> Creative Director
> Jed Schwartz Productions
> 603-495-3125
> jed at jedschwartz.com
> http://www.jedschwartz.com
>
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