CGTalk - Sliding deformer

trthing

09-02-2003, 10:50 AM

I need a Nurbs plane to adapt to irregularly deformed nurbs spheres while they get closer to the plane and then slide over its surface (e.g. it gets closer to the plane in the Y axis then move on the X-Z plane). No they do not need to leave a trail behind ;)

The wrap deformer works fine for the approximation (Y axis) but "drags" the surface with it when I try to move the spheres on the X-Z plane.

Is there a way to disconnect the deformation on these axis so only the normal (Y or -Y) component deforms the plane?

Cheers

MikeRhone

09-02-2003, 07:05 PM

I would suggest you use softbodies for the plane, and set the sphere up as a collision object.

Is that what you wanted to do?

Mike R

dmcgrath

09-03-2003, 07:29 AM

If it was only a sphereical shape you could use the Sculpt Deformer. Change the locator and the deformer at the same time to reposition the deformer.

trthing

09-03-2003, 01:18 PM

Thanks guys for the suggestions!

@Rhonedog: sounds interesting. I wonder if there aren't side effects to that. Could u please ellaborate your suggested path?

@dmcgrath: I see. Would that work with that "use secondary nurbs object..." option?

Anyway, I will be trying both ways!

Cheers

trthing

09-04-2003, 05:53 PM

It worked fine (although slowly) with the sculpt deformer using the secondary object too. The trick was moving the locator as well (thnx dmcgrath).

I will try the softbody thing later...

Cheers

MikeRhone

09-04-2003, 07:40 PM

The softbody method:

I could type out how to do it, but the basic tablecloth softbody lesson would esplain it best.

Grab your plane. Make it a softbody.

Create a sphere.

Grab the softbody particles, then the sphere. Do particles>>Make Collide.

On the geo connector in the inputs in the channel box, put the resilience to 0. (The bouncyness of the particles) and the friction to 0.

If the cloth is too floppy, select the particles and add springs. You will have to tweak to get the effect you are looking for, but IMO this is the BEST way to go.

Scult deformers are cool as well.

Mike R

trthing

09-04-2003, 08:09 PM

Yeah, that method is amazing too: just tested it!

For my purposes it worked better by making the plane become a softbody with a goal (which u didn't mentioned).

It leaves a trail too: it really amazes me how simple it is to set up something like that (of course after u pros give me the hint).

Thnx

trthing

09-04-2003, 10:58 PM

Is there a way of increasing the number of particles generated when I create the softbody (apart from increasing the complexity of the object itself)?

CGTalk Moderation

01-16-2006, 12:00 AM

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.