[Sidefx-houdini-list] Fix copy stamp N and up rotations

Pablo Giménez pablogipi at gmail.com
Wed Jul 6 11:57:47 EDT 2011

Thanks guys!
@Szymon: thanks Ill try it, makes sense
@edward: yep I was also thinking that probably some of my up-normals aare
wrong, they are supposed to be perpendicular, but ill double check  just in

2011/7/6 Edward Lam <edward at sidefx.com>

> Perhaps your two vectors are collinear, in which case the orientation is
> undefined?
> -Edward
> On 06/07/2011 11:44 AM, Pablo Giménez wrote:
>> Hi all.
>> When using copy stamp, if you provide a N and up attributes the operator
>> calculates the rotations using that coordiante system as a reference.
>> I am having some troubles with some geometry that at some point just
>> jumps,
>> it orientation flickers. I have tought that probably the problem is that
>> the
>> copy operator is doing an euler rotation rather than using quaternions.
>> Not sure if somebody else have had the same problem before, but any advice
>> about waht is the best/easy way to get the same rotations but usign
>> quaternions would be gret.
>> Thanks!
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Un saludo
Best Regards
Pablo Giménez

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