[Sidefx-houdini-list] pulling particles along a spiral

Jeff Wagner jeff at sidefx.com
Mon Feb 2 16:31:39 EST 2009

I myself am fond of using the Attribute Transfer POP. I use the same 
attributes from the Point SOP that you would use with the Attractor POP.

Gives me more control.

Jake, I sent you the file directly (no attachments on the list...).


Andrew D Lyons wrote:
> Try using the creep SOP. Make a a line of points. Add noise to their
> position, and then creep them along the spiral (surface). The creep
> SOP can be tricky to initialize - but it's worth it for the control
> you get.
> The point SOP edge force and particle SOP combo may give you something
> a little more on the particle side of things...
> Cheers
> 2009/2/1 Jake <hellfish at gmail.com>:
>> I'm having a lot of trouble with the list, so hopefully this goes through
>> and its not the 15th time.
>> Hi,
>> This might be a silly question, but i want to animate/pull a group of
>> particles along a spiral.
>> Currently, I freehand created a spiral and then assigned radial and
>> edge forces along points on the spiral.
>> However, I'm running into the problem that they seem to float up and
>> around some of the points, rather than get pulled tightly through all
>> the points like I wanted.
>> Is it that I probably just need to spend more time tweaking the
>> settings of the edge and radial forces, or is there an easier way to
>> do this?
>> Thanks for any help.
>> -jake
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