vortex like effect on object ?

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Old 06 June 2012   #1
vortex like effect on object ?

Hi there,

Is there a way to make particles bond to a cone/cylinder like object shape that is animated while the particles are rotating around that shape? kinda like a vortex.

I tried with the lock/bond with a vortex. but the vortex effect doesnt follow the shape of the object.

thanks for your time

BR

Bonemaw
 
Old 06 June 2012   #2
Hmm, a couple of things you could try come to mind. Nothing purely auto-magic though.

You could wrap a helix (or a spline) around your object and use a path constrained Speed By Icon operator.

or create a simple system with a vortex spacewarp,download the evaluation version of Krakatoa, cache out the system, bring it back in with a PRT loader, the drop an animated FFD modifier on top.
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Old 06 June 2012   #3
Thanks Johnny for the reply,

I tried the krakatoa way - but it is to limited for I need it to do.

The speed by icon thing sounds interesting. Though if the object is animated through the entire duration of the playback and I want particles to spawn random points on the object and then travel around the object like using goalUV in maya, would the speed by icon achieve such effect ?
 
Old 06 June 2012   #4
if you need more control then use scripting or box3.
You basically need sum of 3 vectors as particle velocity:
1) A = vortex_center - particle_pos
2) B = up-vector or down-vector
3) C = cross A B

Controlling the length proportions of these vectors you will control the movement of your particles.

Last edited by 3ak : 06 June 2012 at 05:31 PM.
 
Old 06 June 2012   #5
Originally Posted by Bonemaw: Hi there,

Is there a way to make particles bond to a cone/cylinder like object shape that is animated while the particles are rotating around that shape? kinda like a vortex.

I tried with the lock/bond with a vortex. but the vortex effect doesnt follow the shape of the object.

thanks for your time

BR

Bonemaw


using lock and vortex you can apply this simple setup...probably isn't your perfect goal but is pluginless
Attached Files
File Type: zip orbit_01.zip (24.9 KB, 11 views)

Last edited by savat : 06 June 2012 at 06:53 AM.
 
Old 06 June 2012   #6
Thanks for all the nice replies.

@3ak I'm not a very experienced box#3 user, but I would like to give it a try with box#3 to give me a further understanding

@savat I can't open your file here. But I'll give a second try when I get home

BR

Bonemaw
 
Old 06 June 2012   #7
Originally Posted by Bonemaw:
@savat I can't open your file here. But I'll give a second try when I get home

BR

Bonemaw


now is a max 2011 format
 
Old 06 June 2012   #8
@savat thanks for re-uploading the file I tried to look through it. It is very good for a static object but as soon the object has deformers it kinda break easy. I like the simple setup though

I will post the final setup here when I finish

BR

Bonemaw
 
Old 06 June 2012   #9
If I understand correctly...

What if you made your particles emit from a cylinder that is animated to spin? You could apply an animated noise map (in the diffuse channel of a texture, animate the phase by keyframes), then use a DeleteMesh modifier so that the particles only emit from White spots on the cylinder.

With the Cylinder spinning and particles only emitting from the white noise, which is constantly changing and moving because of the animated noise map, I think that might be something interesting to look at. You could even have them emit by Volume of the cylinder, so it gives a tornado effect instead of just looking like a cylinder. Add a Speed modifier and play with settings to get a tornado shape maybe? Speculating here.

I only know how to do this by using a Position Object node and Speed.

Last edited by Eucalyptus : 06 June 2012 at 05:44 PM.
 
Old 06 June 2012   #10
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