[Sidefx-houdini-list] hurricane on Saturn

Jordan Walsh jordan.h.walsh at gmail.com
Thu Nov 26 12:01:58 EST 2015


Thanks Francois, I'll head over

On Thu, Nov 26, 2015 at 3:39 PM, François Duchesneau <sidefx at trinix.ca>
wrote:

> Hi Jordan,
>
> You cannot attach files with the mailing list. I suggest you post it in
> this thread to keep the discussion at the same place.
>
>
> https://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=42526
>
> Thanks
>
> Francois
>
>
> On 11/25/2015 04:31 AM, Jordan Walsh wrote:
>
>> I have zipped it up, so hopefully will work this time!
>>
>> On Wed, Nov 25, 2015 at 3:23 AM, Gerbrand Nel <g at cannonballbunny.com>
>> wrote:
>>
>> Hi Jordan. This technique sounds perfect, thanks.
>>> When you say "paint" velocity, do you mean something like combing the
>>> normals and using those?
>>> Unfortunately your attachment didn't come through.
>>> Could you send it to me directly?
>>> g at cannonballbunny.com
>>> Thanks
>>> G
>>>
>>> On 24/11/2015 16:19, Jordan Walsh wrote:
>>>
>>> I have attached a setup with a null driving the twist volume deformer. Of
>>>> course you can add more features like a ramp for better falloff control,
>>>> etc.
>>>>
>>>> Jordan
>>>>
>>>> On Tue, Nov 24, 2015 at 1:58 PM, Jordan Walsh <jordan.h.walsh at gmail.com
>>>> >
>>>> wrote:
>>>>
>>>> I have done this type of thing before (Eye of Jupiter) and the best way
>>>> to
>>>>
>>>>> go is to model the clouds with polygons and then use the cloud noise
>>>>> tool.
>>>>> Once you have the base you can add some deformers like a twist using
>>>>> volume
>>>>> vops. Layer up a whole pile of them to get the small twirls and then
>>>>> the
>>>>> big twirls. Theses should all be animatable so you get your motion from
>>>>> them. You have to get a bit into using matrix rotations with distance
>>>>> falloffs, but once you get the hang of it, its easy.
>>>>> We used a system where we could paint our velocity directions onto a
>>>>> mesh
>>>>> then use that to drive the motion of the volume for slow flowing
>>>>> volumes.
>>>>> These techniques may not work if you need more of a faster evolving
>>>>> volume.
>>>>>
>>>>> Jordan
>>>>>
>>>>> On Tue, Nov 24, 2015 at 11:34 AM, Gerbrand Nel <g at cannonballbunny.com>
>>>>> wrote:
>>>>>
>>>>> Hey guys
>>>>>
>>>>>> I'm working on a personal project, and part of it involves a close up
>>>>>> shot of the north-pole of Saturn.
>>>>>> Look here:)
>>>>>>
>>>>>>
>>>>>>
>>>>>> http://www.universetoday.com/98667/incredible-raw-image-of-saturns-swirling-north-pole/
>>>>>> It needs to move allot faster than real life, almost a full rotation
>>>>>> per
>>>>>> min.
>>>>>>
>>>>>> How would you guys approach this?
>>>>>> Any links to info or tutorials on this kind of stuff would be super
>>>>>> helpful.
>>>>>> Thanks
>>>>>> Gerbrand
>>>>>>
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>>>>>>
>>>>>>
>>>>>>
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