[Sidefx-houdini-list] Keeping your hairstyle while still being affected by forces

François Duchesneau sidefx at trinix.ca
Thu Nov 29 14:10:52 EST 2007


Other people have asked for those files so I've uploaded them to the 
Houdini Exchange.

I also included an other one called "Transparent Shatter Glass" that 
shows how you can have a piece of glass not showing the pre-fractured 
cracks until it really cracks.

Hope these will help.

François

François Duchesneau wrote:
> I just send it to you with an other one called SpiderWeb which also uses 
> wires.
>
> Take the time to read every node's comment and let me know if you have 
> any question.
>
> François
>
> Marc-Andre Carbonneau wrote:
>   
>> Salut Francois,
>> I can't seem to find an example scene called ponytail...
>> I would be more than happy if you could share it.
>> Man Houdini sure has a huge learning curve. My head hurts at the end of the day! I'm more of the artistic type than of the technical one...
>>
>> Merci,
>> MAC
>>
>> -----Original Message-----
>> From: sidefx-houdini-list-bounces at sidefx.com [mailto:sidefx-houdini-list-bounces at sidefx.com] On Behalf Of François Duchesneau
>> Sent: November 27, 2007 3:31 PM
>> To: sidefx-houdini-list at sidefx.com
>> Subject: Re: [Sidefx-houdini-list] Keeping your hairstyle while still being affected by forces
>>
>> I've made an example file for SideFx called PonyTail that shows this and 
>> also how you can set the stiffness on a point basis as Alvin said. It 
>> might be included in the latest build but if it's not let me know and 
>> I'll send it to you if SideFx agree.
>>
>> François
>>
>> Alvin Yap wrote:
>>   
>>     
>>> Hi!
>>> Off my head, I assume you are going to be using a Wire Object/Solver 
>>> inside DOPs for doing the sim.
>>>
>>> Inside the Wire Object you will want to play with the Angular Spring 
>>> Constraint. That controls how flexible/bendy the wires are. Linear 
>>> Spring constraint controls how stretchy the hairs are. You can also play 
>>> with the damping to slow down the stretching/bending.
>>>
>>> You can also apply e.g. kangular at the sops level, so specific points 
>>> e.g. towards the edges, have a lower kangular value so they move more, 
>>> and towards the roots of the hair, have a high kangular so that they are 
>>> less affected by say gravity.
>>>
>>> I also like to turn "Adjust For Length" off, it gives me a better feel 
>>> for the simulation.
>>>
>>> HTHs!
>>>
>>> Alvin
>>>
>>> Marc-Andre Carbonneau wrote:
>>>   
>>>     
>>>       
>>>> Hi,
>>>>
>>>>  
>>>>
>>>> Say I combed my hair in a style my art director likes.
>>>>
>>>>  
>>>>
>>>> Now I want to apply dynamics but I want my hair to be stiff...as if I applied spray.
>>>>
>>>> I want my hair style to keep its shape the best it can while still being affected by forces like gravity and wind.
>>>>
>>>> How do I achieve that? Which node do I need?
>>>>
>>>> thanks
>>>>
>>>>  
>>>>
>>>> Marc-André Carbonneau
>>>>
>>>> VFX artist 
>>>>
>>>> Ubisoft Digital Arts
>>>>
>>>> Montréal
>>>>
>>>> 514.490.2000 x:3443
>>>>
>>>>  
>>>>
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>>>>   
>>>>     
>>>>       
>>>>         
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