Cloth Collection
Bottom of the Page

Create panel (Helpers) reactor CLCollection

Animation menu reactor Create Object Cloth Collection

reactor toolbar (Create Cloth Collection)

The Cloth Collection is a reactor helper object that acts as a container for Cloth objects. Once you have added a Cloth Collection to your scene, you can add Cloth objects (object with a Cloth modifier) in the scene to the collection.

When you run the simulation, reactor examines the cloth collections in the scene, and, provided that the collections are not disabled, adds the cloth objects they contain to the simulation.


To create and use a Cloth Collection:

  1. Create some Cloth objects by applying the reactor Cloth modifier to standard objects.
  2. Choose one of the above commands, and then click in any viewport to add the Cloth Collection.
    NoteThe icon’s position has no effect on the collection’s behavior.

    The collection icon is added to the scene. You can add Cloth objects to the collection in two ways: by picking or by using a selection list.

  3. Add objects to the collection using either (or both) of these methods:
    • On the Properties rollout, click the Pick button, and then in the viewport click an object to add.
    • On the Properties rollout, click the Add button, and then use the Select Cloths dialog to specify one or more objects to add.

To create the collection and add objects in a single step:


Cloth Collection Properties rollout


Causes the objects in the collection to flash momentarily in the viewports.

Cloth Entities

Lists the names of the objects currently in the Cloth Collection.


Adds an object to the cloth collection. Click this button, then in the viewport move the cursor over an object to add to the collection. If it is a Cloth object, the cursor changes from an arrow to a cross and you can select the object to add it to the collection.


Adds one or more objects from the scene to the collection. Click the button to open the Select Cloths dialog. Highlight one or more entries in the list, and then click the Select button to add the objects to the collection.


Removes objects from the collection. In the Cloth Entities list, highlight the bodies to remove from the collection and click this button.


When on, the collection and the bodies it contains are not added to the simulation.

Advanced rollout

Internal Steps

Because deformable objects are more complex to simulate, it is usually necessary to perform more simulation steps to increase stability. This parameter specifies the number of steps reactor performs internally to simulate objects in this collection for each simulation substep taken globally during the simulation. For example, at 60 fps, simulating at one keyframe (step) per frame, 10 substeps, at three internal substeps for this collection, reactor simulates the objects in this collection using 60x10x3=1,800 steps per second, while the simulation in general uses 60x10=600 steps every second. This allows the objects in this collection to be simulated more accurately without slowing down the rest of the simulation. In general terms, you can think of it in this way:

  • Precision (stability) of overall simulation=Number of Substeps (as specified on the Preview and Animation rollout)
  • Precision (stability) of objects in this collection=(Precision of overall simulation)x(Internal Substeps)
Reset Default Values

Restores Internal Steps to its default value.