Re: Houdini tutorial | Building the orientation matrix for local rotation

[David Saber]

Good job bro!


On 2017-03-09 14:39, Olivier Jeannel wrote:
I made a little tutorial on how to get local rotation when working in 
houdini.

https://vimeo.com/207626604

Build an orientation matrix
Rotate using the orient attribute before the copy sop
Rotate objects after the copy sop.

And it's all VOP !


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Re: Houdini tutorial | Building the orientation matrix for local rotation

[Nono]

Damn Vex, just found out that you can replace your whole first part by

matrix3 m = maketransform(@N,{0,1,0});
@orient = quaternion(m);

The normal SOP isn't needed too seems houdini calculate it under the hood...

Thanks Olivier


On 13 March 2017 at 21:27, Jonathan Moore <jonathan.moo...@gmail.com> wrote:

> | Jonathan, I thought VOP and VEX were running at same speed ? Am I wrong
> ?
>
>
>
> The automatically generated code is messier but should run at
> approximately the same speed. Any speed advantage will often come by
> achieving more with less nodes (less chance of other nodes slowing things
> down unexpectedly).
>
>
>
> I think the main advantage of Wrangles is that you often find things that
> can take a good number of VOP nodes are achievable with few lines of VEX.
> That’s not unique to VOPs, it’s a characteristic of visual programming in
> general.
>
>
>
> I’ve got nothing against VOP’s, I think they’re great (I prefer them to
> ICE in many ways). I was just attempting to answer Chris’s question ref the
> advantages and disadvantages of each approach.
>
>
>
>
>
>
>
> *From:* softimage-boun...@listproc.autodesk.com [mailto:softimage-bounces@
> listproc.autodesk.com] *On Behalf Of *Olivier Jeannel
> *Sent:* 13 March 2017 18:47
> *To:* Official Softimage Users Mailing List. https://groups.google.com/
> forum/#!forum/xsi_list <softimage@listproc.autodesk.com>
> *Subject:* Re: Houdini tutorial | Building the orientation matrix for
> local rotation
>
>
>
> Jonathan, I thought VOP and VEX were running at same speed ? Am I wrong ?
>
>
>
> 2017-03-13 19:44 GMT+01:00 Olivier Jeannel <facialdel...@gmail.com>:
>
> Vop is close to ICE.
>
> VOP is the visual version of VEX which is code (coding vector).
>
> In fact, when you build some Vop trees, you can see the resulting Vex code.
>
>
>
> It's just me beeing more able to build and read Vop nodes rather Vex lines.
>
>
>
>
>
> 2017-03-13 15:55 GMT+01:00 Chris Marshall <chrismarshal...@gmail.com>:
>
> And it's all VOP! ? As opposed to what? And what's the advantage /
> difference?
>
>
>
> On 9 March 2017 at 13:39, Olivier Jeannel <facialdel...@gmail.com> wrote:
>
> I made a little tutorial on how to get local rotation when working in
> houdini.
>
> https://vimeo.com/207626604
>
>
>
> Build an orientation matrix
>
> Rotate using the orient attribute before the copy sop
>
> Rotate objects after the copy sop.
>
>
>
> And it's all VOP !
>
>
>
> --
> Softimage Mailing List.
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> with "unsubscribe" in the subject, and reply to confirm.
>
>
>
>
> --
>
> Chris Marshall
>
> Mint Motion Limited
>
> 029 20 37 27 57
>
> 07730 533 115
>
> www.mintmotion.co.uk
>
> www.dot3d.com
>
>
>
>
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RE: Houdini tutorial | Building the orientation matrix for local rotation

[Jonathan Moore]

| Jonathan, I thought VOP and VEX were running at same speed ? Am I wrong ?

 

The automatically generated code is messier but should run at approximately the 
same speed. Any speed advantage will often come by achieving more with less 
nodes (less chance of other nodes slowing things down unexpectedly).

 

I think the main advantage of Wrangles is that you often find things that can 
take a good number of VOP nodes are achievable with few lines of VEX. That’s 
not unique to VOPs, it’s a characteristic of visual programming in general.

 

I’ve got nothing against VOP’s, I think they’re great (I prefer them to ICE in 
many ways). I was just attempting to answer Chris’s question ref the advantages 
and disadvantages of each approach.

 

 

 

From: softimage-boun...@listproc.autodesk.com 
[mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Olivier Jeannel
Sent: 13 March 2017 18:47
To: Official Softimage Users Mailing List. 
https://groups.google.com/forum/#!forum/xsi_list 
<softimage@listproc.autodesk.com>
Subject: Re: Houdini tutorial | Building the orientation matrix for local 
rotation

 

Jonathan, I thought VOP and VEX were running at same speed ? Am I wrong ?

 

2017-03-13 19:44 GMT+01:00 Olivier Jeannel <facialdel...@gmail.com 
<mailto:facialdel...@gmail.com> >:

Vop is close to ICE.

VOP is the visual version of VEX which is code (coding vector).

In fact, when you build some Vop trees, you can see the resulting Vex code.

 

It's just me beeing more able to build and read Vop nodes rather Vex lines.

 

 

2017-03-13 15:55 GMT+01:00 Chris Marshall <chrismarshal...@gmail.com 
<mailto:chrismarshal...@gmail.com> >:

And it's all VOP! ? As opposed to what? And what's the advantage / difference?

 

On 9 March 2017 at 13:39, Olivier Jeannel <facialdel...@gmail.com 
<mailto:facialdel...@gmail.com> > wrote:

I made a little tutorial on how to get local rotation when working in houdini.

https://vimeo.com/207626604

 

Build an orientation matrix

Rotate using the orient attribute before the copy sop

Rotate objects after the copy sop.

 

And it's all VOP !

 

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www.dot3d.com <http://www.dot3d.com> 

 


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Re: Houdini tutorial | Building the orientation matrix for local rotation

[Olivier Jeannel]

Jonathan, I thought VOP and VEX were running at same speed ? Am I wrong ?

2017-03-13 19:44 GMT+01:00 Olivier Jeannel :

> Vop is close to ICE.
> VOP is the visual version of VEX which is code (coding vector).
> In fact, when you build some Vop trees, you can see the resulting Vex code.
>
> It's just me beeing more able to build and read Vop nodes rather Vex lines.
>
>
> 2017-03-13 15:55 GMT+01:00 Chris Marshall :
>
>> And it's all VOP! ? As opposed to what? And what's the advantage /
>> difference?
>>
>>
>> On 9 March 2017 at 13:39, Olivier Jeannel  wrote:
>>
>>> I made a little tutorial on how to get local rotation when working in
>>> houdini.
>>> https://vimeo.com/207626604
>>>
>>> Build an orientation matrix
>>> Rotate using the orient attribute before the copy sop
>>> Rotate objects after the copy sop.
>>>
>>> And it's all VOP !
>>>
>>> --
>>> Softimage Mailing List.
>>> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
>>> with "unsubscribe" in the subject, and reply to confirm.
>>>
>>
>>
>>
>> --
>> Chris Marshall
>> Mint Motion Limited
>> 029 20 37 27 57
>> 07730 533 115
>> www.mintmotion.co.uk
>> www.dot3d.com
>>
>>
>>
>> --
>> Softimage Mailing List.
>> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
>> with "unsubscribe" in the subject, and reply to confirm.
>>
>
>
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Re: Houdini tutorial | Building the orientation matrix for local rotation

[Olivier Jeannel]

Vop is close to ICE.
VOP is the visual version of VEX which is code (coding vector).
In fact, when you build some Vop trees, you can see the resulting Vex code.

It's just me beeing more able to build and read Vop nodes rather Vex lines.


2017-03-13 15:55 GMT+01:00 Chris Marshall :

> And it's all VOP! ? As opposed to what? And what's the advantage /
> difference?
>
>
> On 9 March 2017 at 13:39, Olivier Jeannel  wrote:
>
>> I made a little tutorial on how to get local rotation when working in
>> houdini.
>> https://vimeo.com/207626604
>>
>> Build an orientation matrix
>> Rotate using the orient attribute before the copy sop
>> Rotate objects after the copy sop.
>>
>> And it's all VOP !
>>
>> --
>> Softimage Mailing List.
>> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
>> with "unsubscribe" in the subject, and reply to confirm.
>>
>
>
>
> --
> Chris Marshall
> Mint Motion Limited
> 029 20 37 27 57
> 07730 533 115
> www.mintmotion.co.uk
> www.dot3d.com
>
>
>
> --
> Softimage Mailing List.
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> with "unsubscribe" in the subject, and reply to confirm.
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RE: Houdini tutorial | Building the orientation matrix for local rotation

[Jonathan Moore]

The alternative is VEX Wrangles. The advantages is that it’s less effort if 
you’re au fete with VEX and it will more than likely run faster, which doesn’t 
make any difference on a small scene but if you’re dealing with hundreds to 
thousands of transforms it soon counts a lot.

 

The advantages of VOP’s is much like ICE, it’s visual, approachable and artist 
friendly.

 

VOP’s are threaded too (they generate VEX code behind the scenes automatically) 
so there’s not much in it for smaller transform challenges. The one gotcha, as 
you work on larger scenes is that you avoid the old Point SOP as that’s single 
threaded and even though it’s doing something simple in Oliver’s example, if 
it’s doing it to 5000 points on a single thread that’s not so good.

 

A lot of artists gravitate towards Wrangles in the long run and save VOP’s for 
things like procedural noise (which is trickier to manage in Wrangles). VEX 
snippets in Wrangles is pretty approachable too. The documentation is good and 
folk like Entagma  and Matt Estella (Tokeru Wiki) includes bite sized chucks of 
VEX in their tutorials – which eases the path considerably as you’re always 
learning through context.

 

From: softimage-boun...@listproc.autodesk.com 
[mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Chris Marshall
Sent: 13 March 2017 14:55
To: Official Softimage Users Mailing List. 
https://groups.google.com/forum/#!forum/xsi_list 
<softimage@listproc.autodesk.com>
Subject: Re: Houdini tutorial | Building the orientation matrix for local 
rotation

 

And it's all VOP! ? As opposed to what? And what's the advantage / difference?

 

On 9 March 2017 at 13:39, Olivier Jeannel <facialdel...@gmail.com 
<mailto:facialdel...@gmail.com> > wrote:

I made a little tutorial on how to get local rotation when working in houdini.

https://vimeo.com/207626604

 

Build an orientation matrix

Rotate using the orient attribute before the copy sop

Rotate objects after the copy sop.

 

And it's all VOP !


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Softimage Mailing List.
To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com 
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subject, and reply to confirm.




-- 

Chris Marshall

Mint Motion Limited

029 20 37 27 57

07730 533 115

www.mintmotion.co.uk <http://www.mintmotion.co.uk> 

www.dot3d.com <http://www.dot3d.com> 

 

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Re: Houdini tutorial | Building the orientation matrix for local rotation

[Chris Marshall]

And it's all VOP! ? As opposed to what? And what's the advantage /
difference?


On 9 March 2017 at 13:39, Olivier Jeannel  wrote:

> I made a little tutorial on how to get local rotation when working in
> houdini.
> https://vimeo.com/207626604
>
> Build an orientation matrix
> Rotate using the orient attribute before the copy sop
> Rotate objects after the copy sop.
>
> And it's all VOP !
>
> --
> Softimage Mailing List.
> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
> with "unsubscribe" in the subject, and reply to confirm.
>



-- 
Chris Marshall
Mint Motion Limited
029 20 37 27 57
07730 533 115
www.mintmotion.co.uk
www.dot3d.com
--
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Re: Houdini tutorial | Building the orientation matrix for local rotation

[Fabricio Chamon]

thanks for the tutorial Olivier, helps a lot!

2017-03-10 23:29 GMT+01:00 Olivier Jeannel <facialdel...@gmail.com>:

> No problem Jonathan !
> I'm rather happy :)
>  Still on 15.5, I'm waiting a bit before switching to 16. I barely use the
> point SOP, but for the tut I was trying to do it the most classical way,
> plus I'm a super slow typer, doing it in wrangle would have made my
> audience fall asleep ;)
>
>
> 2017-03-10 21:10 GMT+01:00 Jonathan Moore <jonathan.moo...@gmail.com>:
>
>> Oliver, Hope you don’t think I wasn’t being critical when I mentioned the
>> Point SOP being deprecated in H16. I’d already mentioned that it was a good
>> tutorial. 
>>
>>
>>
>> I just think it’s good for those on this list that have just made the
>> move to H16 to do things the new recommend way (avoid using the old Point
>> SOP because it’s single threaded). On that basis you can also add the ‘piv’
>> attribute through the new Attribute Expression as well. It’s no different
>> than using a Wrangle. It just avoids using two separate nodes.
>>
>>
>>
>>
>>
>>
>>
>> *From:* softimage-boun...@listproc.autodesk.com [mailto:
>> softimage-boun...@listproc.autodesk.com] *On Behalf Of *Ed Schiffer
>> *Sent:* 10 March 2017 19:35
>> *To:* Official Softimage Users Mailing List.
>> https://groups.google.com/forum/#!forum/xsi_list <
>> softimage@listproc.autodesk.com>
>> *Subject:* Re: Houdini tutorial | Building the orientation matrix for
>> local rotation
>>
>>
>>
>> really good tutorial, Oliver.
>>
>>
>>
>> thanks
>>
>>
>>
>> On 10 March 2017 at 08:42, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:
>>
>> Thank you Olivier!
>>
>>
>> ----------
>>
>> *From:* softimage-boun...@listproc.autodesk.com <
>> softimage-boun...@listproc.autodesk.com> on behalf of Olivier Jeannel <
>> facialdel...@gmail.com>
>> *Sent:* 09 March 2017 13:39
>> *To:* softimage@listproc.autodesk.com
>> *Subject:* Houdini tutorial | Building the orientation matrix for local
>> rotation
>>
>>
>>
>> I made a little tutorial on how to get local rotation when working in
>> houdini.
>>
>> https://vimeo.com/207626604
>>
>> <https://vimeo.com/207626604>
>>
>> Building the orientation matrix for local rotation
>> <https://vimeo.com/207626604>
>>
>> vimeo.com
>>
>> Sorry the phone rang at the end of the video.
>>
>>
>>
>>
>>
>> Build an orientation matrix
>>
>> Rotate using the orient attribute before the copy sop
>>
>> Rotate objects after the copy sop.
>>
>>
>>
>> And it's all VOP !
>>
>>
>> --
>> Softimage Mailing List.
>> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
>> with "unsubscribe" in the subject, and reply to confirm.
>>
>>
>>
>>
>>
>> --
>>
>> www.edschiffer.com
>>
>> --
>> Softimage Mailing List.
>> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
>> with "unsubscribe" in the subject, and reply to confirm.
>>
>
>
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> with "unsubscribe" in the subject, and reply to confirm.
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Re: Houdini tutorial | Building the orientation matrix for local rotation

[Olivier Jeannel]

No problem Jonathan !
I'm rather happy :)
 Still on 15.5, I'm waiting a bit before switching to 16. I barely use the
point SOP, but for the tut I was trying to do it the most classical way,
plus I'm a super slow typer, doing it in wrangle would have made my
audience fall asleep ;)


2017-03-10 21:10 GMT+01:00 Jonathan Moore <jonathan.moo...@gmail.com>:

> Oliver, Hope you don’t think I wasn’t being critical when I mentioned the
> Point SOP being deprecated in H16. I’d already mentioned that it was a good
> tutorial. 
>
>
>
> I just think it’s good for those on this list that have just made the move
> to H16 to do things the new recommend way (avoid using the old Point SOP
> because it’s single threaded). On that basis you can also add the ‘piv’
> attribute through the new Attribute Expression as well. It’s no different
> than using a Wrangle. It just avoids using two separate nodes.
>
>
>
>
>
>
>
> *From:* softimage-boun...@listproc.autodesk.com [mailto:softimage-bounces@
> listproc.autodesk.com] *On Behalf Of *Ed Schiffer
> *Sent:* 10 March 2017 19:35
> *To:* Official Softimage Users Mailing List. https://groups.google.com/
> forum/#!forum/xsi_list <softimage@listproc.autodesk.com>
> *Subject:* Re: Houdini tutorial | Building the orientation matrix for
> local rotation
>
>
>
> really good tutorial, Oliver.
>
>
>
> thanks
>
>
>
> On 10 March 2017 at 08:42, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:
>
> Thank you Olivier!
>
>
> --
>
> *From:* softimage-boun...@listproc.autodesk.com <
> softimage-boun...@listproc.autodesk.com> on behalf of Olivier Jeannel <
> facialdel...@gmail.com>
> *Sent:* 09 March 2017 13:39
> *To:* softimage@listproc.autodesk.com
> *Subject:* Houdini tutorial | Building the orientation matrix for local
> rotation
>
>
>
> I made a little tutorial on how to get local rotation when working in
> houdini.
>
> https://vimeo.com/207626604
>
> <https://vimeo.com/207626604>
>
> Building the orientation matrix for local rotation
> <https://vimeo.com/207626604>
>
> vimeo.com
>
> Sorry the phone rang at the end of the video.
>
>
>
>
>
> Build an orientation matrix
>
> Rotate using the orient attribute before the copy sop
>
> Rotate objects after the copy sop.
>
>
>
> And it's all VOP !
>
>
> --
> Softimage Mailing List.
> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
> with "unsubscribe" in the subject, and reply to confirm.
>
>
>
>
>
> --
>
> www.edschiffer.com
>
> --
> Softimage Mailing List.
> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
> with "unsubscribe" in the subject, and reply to confirm.
>
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RE: Houdini tutorial | Building the orientation matrix for local rotation

[Jonathan Moore]

Oliver, Hope you don’t think I wasn’t being critical when I mentioned the Point 
SOP being deprecated in H16. I’d already mentioned that it was a good tutorial. 


 

I just think it’s good for those on this list that have just made the move to 
H16 to do things the new recommend way (avoid using the old Point SOP because 
it’s single threaded). On that basis you can also add the ‘piv’ attribute 
through the new Attribute Expression as well. It’s no different than using a 
Wrangle. It just avoids using two separate nodes.

 



 

 

From: softimage-boun...@listproc.autodesk.com 
[mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ed Schiffer
Sent: 10 March 2017 19:35
To: Official Softimage Users Mailing List. 
https://groups.google.com/forum/#!forum/xsi_list 
<softimage@listproc.autodesk.com>
Subject: Re: Houdini tutorial | Building the orientation matrix for local 
rotation

 

really good tutorial, Oliver.

 

thanks

 

On 10 March 2017 at 08:42, Tim Bolland <tim_boll...@hotmail.co.uk 
<mailto:tim_boll...@hotmail.co.uk> > wrote:

Thank you Olivier! 

 


  _  


From: softimage-boun...@listproc.autodesk.com 
<mailto:softimage-boun...@listproc.autodesk.com>  
<softimage-boun...@listproc.autodesk.com 
<mailto:softimage-boun...@listproc.autodesk.com> > on behalf of Olivier Jeannel 
<facialdel...@gmail.com <mailto:facialdel...@gmail.com> >
Sent: 09 March 2017 13:39
To: softimage@listproc.autodesk.com <mailto:softimage@listproc.autodesk.com> 
Subject: Houdini tutorial | Building the orientation matrix for local rotation 

 

I made a little tutorial on how to get local rotation when working in houdini. 

https://vimeo.com/207626604 


 <https://vimeo.com/207626604> 

 <https://vimeo.com/207626604> Building the orientation matrix for local 
rotation

vimeo.com <http://vimeo.com> 

Sorry the phone rang at the end of the video.

 

 

Build an orientation matrix

Rotate using the orient attribute before the copy sop

Rotate objects after the copy sop.

 

And it's all VOP !


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Re: Houdini tutorial | Building the orientation matrix for local rotation

[Ed Schiffer]

really good tutorial, Oliver.

thanks

On 10 March 2017 at 08:42, Tim Bolland <tim_boll...@hotmail.co.uk> wrote:

> Thank you Olivier!
>
> --
> *From:* softimage-boun...@listproc.autodesk.com <
> softimage-boun...@listproc.autodesk.com> on behalf of Olivier Jeannel <
> facialdel...@gmail.com>
> *Sent:* 09 March 2017 13:39
> *To:* softimage@listproc.autodesk.com
> *Subject:* Houdini tutorial | Building the orientation matrix for local
> rotation
>
> I made a little tutorial on how to get local rotation when working in
> houdini.
> https://vimeo.com/207626604
> <https://vimeo.com/207626604>
> Building the orientation matrix for local rotation
> <https://vimeo.com/207626604>
> vimeo.com
> Sorry the phone rang at the end of the video.
>
>
>
> Build an orientation matrix
> Rotate using the orient attribute before the copy sop
> Rotate objects after the copy sop.
>
> And it's all VOP !
>
> --
> Softimage Mailing List.
> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com
> with "unsubscribe" in the subject, and reply to confirm.
>



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Re: Houdini tutorial | Building the orientation matrix for local rotation

[Tim Bolland]

Thank you Olivier!


From: softimage-boun...@listproc.autodesk.com 
<softimage-boun...@listproc.autodesk.com> on behalf of Olivier Jeannel 
<facialdel...@gmail.com>
Sent: 09 March 2017 13:39
To: softimage@listproc.autodesk.com
Subject: Houdini tutorial | Building the orientation matrix for local rotation

I made a little tutorial on how to get local rotation when working in houdini.
https://vimeo.com/207626604
[https://i.vimeocdn.com/filter/overlay?src0=https%3A%2F%2Fi.vimeocdn.com%2Fvideo%2F622752365_1280x720.jpg=https%3A%2F%2Ff.vimeocdn.com%2Fimages_v6%2Fshare%2Fplay_icon_overlay.png]<https://vimeo.com/207626604>

Building the orientation matrix for local rotation<https://vimeo.com/207626604>
vimeo.com
Sorry the phone rang at the end of the video.




Build an orientation matrix
Rotate using the orient attribute before the copy sop
Rotate objects after the copy sop.

And it's all VOP !
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RE: Houdini tutorial | Building the orientation matrix for local rotation

[Jonathan Moore]

Just a thought with regards to the creation of the ‘up vector’ via the Point 
SOP. This has been deprecated in H16 and in its place you would use the 
Attribute Expression SOP (you can still call it on the tab menu via Point…) as 
this is multithreaded. The workflows a little different but just a simple.

 



 

From: softimage-boun...@listproc.autodesk.com 
[mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Olivier Jeannel
Sent: 09 March 2017 13:40
To: softimage@listproc.autodesk.com
Subject: Houdini tutorial | Building the orientation matrix for local rotation

 

I made a little tutorial on how to get local rotation when working in houdini.

https://vimeo.com/207626604

 

Build an orientation matrix

Rotate using the orient attribute before the copy sop

Rotate objects after the copy sop.

 

And it's all VOP !

--
Softimage Mailing List.
To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com with 
"unsubscribe" in the subject, and reply to confirm.

RE: Houdini tutorial | Building the orientation matrix for local rotation

[Jonathan Moore]

Nice clear explanation Oliver.

 

From: softimage-boun...@listproc.autodesk.com 
[mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Olivier Jeannel
Sent: 09 March 2017 13:40
To: softimage@listproc.autodesk.com
Subject: Houdini tutorial | Building the orientation matrix for local rotation

 

I made a little tutorial on how to get local rotation when working in houdini.

https://vimeo.com/207626604

 

Build an orientation matrix

Rotate using the orient attribute before the copy sop

Rotate objects after the copy sop.

 

And it's all VOP !

--
Softimage Mailing List.
To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com with 
"unsubscribe" in the subject, and reply to confirm.

Houdini tutorial | Building the orientation matrix for local rotation

[Olivier Jeannel]

I made a little tutorial on how to get local rotation when working in
houdini.
https://vimeo.com/207626604

Build an orientation matrix
Rotate using the orient attribute before the copy sop
Rotate objects after the copy sop.

And it's all VOP !
--
Softimage Mailing List.
To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com with 
"unsubscribe" in the subject, and reply to confirm.