[Sidefx-houdini-list] point ... normals?

katrin schmid Katisss at gmx.de
Thu Mar 11 20:41:24 EST 2010


hi,
SOHO python preferably...
I create vertex normals for the objects i import
but i prefer my exporter to handle any geo object.
Thanks,
katrin

-------- Original-Nachricht --------
> Datum: Thu, 11 Mar 2010 17:38:51 -0800
> Von: "Ivan DeWolf" <ivan at martian-labs.com>
> An: sidefx-houdini-list at sidefx.com
> Betreff: Re: [Sidefx-houdini-list] point ... normals?

> 
> query them in what context? python? vex? SOPs? HDK?
> 
> Houdini doesn't normally save vertex normals, they can be compputed as  
> the cross product of the polygon edges, but you can write arbitrary  
> attribs to vertices, including normals. Accessing them depends on the  
> context in which you are trying to access them. an attribcreate SOP  
> might be what you want, if you're looking for HDK access, you can  
> access vertices through the polygons, if you want to access them in  
> VEX, you'll have to promote them...
> 
> you might want to unique your points (using a facet SOP)
> 
> 
> Quoting "katrin schmid" <Katisss at gmx.de>:
> 
> > hi,
> > is there any way to query the actual
> > vertice normals? I would like to write them
> > to a custom file format which does not handle oint normals.
> > Thanks,
> > katrin
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