[Sidefx-houdini-list] normals

Sean Lewkiw seanl at rainmaker.com
Thu May 10 05:28:08 EDT 2007


I have to say Steven's border SOP combined with the point SOP makes a 
very nice digital asset for reliably pointing normals outwards.  Thanks 
for this Steven.

Sean

zoran arizanovic wrote:
> both are elegant solutions :)
> I use point sop-$TX2-$TX a lot and works in most cases
> thanks
> z
>
> On 5/10/07, jason lam <j.lam81 at gmail.com> wrote:
>>
>> Bonus, thanks guys
>> i ended up using the extrude sop
>>
>> i was trying the point sop which is super powerful, but i dont know
>> the math to rotate them - i know i can use cross product to find
>> perpediculr to where they are now, but not how to make each on go perp
>> to outline.
>>
>> thanks again!
>>
>> cheers
>>
>> jais
>>
>>
>> On 5/10/07, Jerry Corda-Stanley <jerry at intelligentcreatures.com> wrote:
>> > Simon's suggestion with the extrude SOP is good.
>> > Just extrude without front and back face and do not convert to mesh.
>> > Pipe that into a facet SOP and compute normals, than carve back down
>> > to original outline.
>> >
>> >
>> > ----- "jason lam" <j.lam81 at gmail.com> wrote:
>> > > Hey guys
>> > >
>> > > i've got a trace sop which nicely traces my input image, however 
>> with
>> > > the points that it generates, the normals face uniformly out in Z 
>> and
>> > > not point 'out' of the shape if you get what i'm saying.
>> > > how do it turn the normals so that they point outwards?
>> > >
>> > > cheers
>> > >
>> > > Jason
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-- 
Sean Lewkiw
--
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