Use dForce to Stretch Around an Object?

Nyghtfall3D

Is it possible to use dForce to simulate something like tape or plastic strentching around another object, like a box or cylinder?

Richard Haseltine

You mean to animate the wrapping, or to achieve the effect in a still? The latter could probably be done with a sphere, torus, or cube using the Geometry Editor to remove all but a band around the middle, then applying a dForce modifier and using a value less than 1/100% for Expand/Contract to get it snug. Animating might be possible with a long strip of mesh, pinning it (0 simulation strength) at one end and using an animated primitive to control the wrapping, but I think if you wwant the effect of unspooling tape you'd have to add that in post by having a reel separately animated and masking out the actual simulating  strip where it projected beyond the reel.

Nyghtfall3D

Richard Haseltine said:

You mean to animate the wrapping, or to achieve the effect in a still?

The latter.

The latter could probably be done with a sphere, torus, or cube using the Geometry Editor to remove all but a band around the middle, then applying a dForce modifier and using a value less than 1/100% for Expand/Contract to get it snug.

Thanks.

RGcincy

This tutorial shows cling wrap on a figure but not all the way around.

Nyghtfall3D

RGcincy said:

This tutorial shows cling wrap on a figure but not all the way around.

Thanks,but I'm either dense or Daz moved stuff/relabeled it since that tut was posted.

There are no simulation settings in the Surface pane when selected the Plane primitive or dForce Weight Modifier created, and I don't see an option for creating a "dynamic" dForce Modifier, only a Wind node or Weight modifier.

Richard Haseltine

Nyghtfall3D said:

RGcincy said:

This tutorial shows cling wrap on a figure but not all the way around.

Thanks,but I'm either dense or Daz moved stuff/relabeled it since that tut was posted.

There are no simulation settings in the Surface pane when selected the Plane primitive or dForce Weight Modifier created, and I don't see an option for creating a "dynamic" dForce Modifier, only a Wind node or Weight modifier.

It's not in the Create menui, it's applied to an existing model so it is in the Simulation Settings pane options menu or in Edit>Figure or Object>Geometry

Nyghtfall3D

Richard Haseltine said:

It's not in the Create menui, it's applied to an existing model so it is in the Simulation Settings pane options menu or in Edit>Figure or Object>Geometry

I never knew there was anything dForce-related in the Geometry Editor.

Thank you.

EDIT: From the post RG linked to, I don't see these options in the Simulations settings:

c. In the Surface pane, set the Simulation parameters as follows:

• Stretch, Shear, and Bend Stiffness
• Buckling stiffness
• Buckling ratio
• Density

All I see is this:

Richard Haseltine

Those are in the Surface settings for the item once it has the dynamic dForce modifier in place.

lou_harper

Dforce Magnet should be the thing for it.

stem_athome

I was never able to get d-force to shrink(contract) onto an object correctly, certainly not for it to look like it is stretching around an object.

Instead, for the exaple posted, I would expand the cylinder/object into the tape(object to be stretched).

Quick example renders:-

Before/after.