Noise Modifier to Deform Only the Center but not the Surface

Noise Modifier to Deform Only the Center but not the Surface

Byteman
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Noise Modifier to Deform Only the Center but not the Surface

Byteman
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I am about to ask a -somewhat- odd question, but I need the effect from time to time.

 

The cell in the image is composed of a nucleus, tiny granules and the outer membrane.

It is slowly deforming with a noise modifier. Since each element has to conform the same noise movement, all three objects are assigned the same Noise Modifier.

The deformation of the outer membrane and the nucleus are ok with the Noise amount and Scale, but the spherical granules deform into an ellipsoid due to their smaller scale and that is sometimes not wanted.

 

Anybody has an idea how I can move the granules conforming the noise but not deform its surface. In other words I need to move the centers of the granules without deforming the surface.

 

Byteman_0-1624689388199.png

 

Thank you

 

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roberto
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Hi @Byteman !

 

Is there a way to do this with animation constraints feature. This way you restrict the position of the objects and not their deformation. 

I suggest using the same noise modifier both for objects that will deform as the cell, and for intermediate objects that will serve to position the granules. In this way, You may have some surfaces to position the granules in space

please pay attention to always do these procedures at frame 0

 

I hope that it help you and solve your issue and help you an other user with same questions!🙂



Roberto Eliasquevici
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Message 3 of 4

Byteman
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Thank you Roberto for the kind response.  I actually use Attachment Controller some other receptor objects floating on the surface of the cell membrane. Funny how the human mind  is blind to things when looking from another perspective:

I don't have any animation regarding the granules so I always thought of them as a single object. Also the number of the granules were high so I created them with pflow and snapshot, so they were a single mesh with spherical elements. I notice just now that it was obvious from my last sentence, that each granule has to be a separate object to have a separate center. How dumb of me. 😂 

 

A sub-object method may still be appreciated although seems -to me now- less likely to be possible.

 

Let me ask a follow up question :

The two T shaped elements are what I used the attachment controller (constraint) for. Actually they are linked to the receptor objects below them and the receptors are constrained by Attachment Controllers. 

 

Now there is a third object- a pollen- moving between them and connecting the two.

In this case I need the attachment to cell surface to move on with the noise deformation, but also the close ends of the T shaped objects also connected to the "o" shaped pollen.  

 

I could only think of using a link controller to link the pollen to one of the T's at the appropriate frame Then also use it as a Linked Xform Controller object for the other T shaped object. 

One of T shaped objects will be deformed and that is not what  I prefer, but I ll have to use it if I can't find another method. I am also trying a look at constraint but the shapes are not regular and I can't keep it looking at the correct direction.

 

Do you have any recommendations for this task? (I might again be asking questions with obvious answers. The objects have to be either deformed or somehow get unlinked in terms of rotation. I am looking for a method to achieve the latter.)

Byteman_0-1624781497552.png

 

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Message 4 of 4

roberto
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Hi @Byteman ! 

I'm happy I helped 🙂

 

About the number of grains and the solution for sub-objects I think Pflow can solve it. I've been using TyFlow for ArchViz animations. I think tyflow can handle a lot of situations like this.

 

I'm going to think about a solution to the T-shapes situation, but what comes to mind whenever I need to constraint position and keep rotation free is to use an intermediate object. A dummy object that could be restricted to a path - and animated along this path - that would be linked to geometry.

if you think this might help in any way let me know. 😉



Roberto Eliasquevici
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