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Symmetry and repetition | Substance 3D Modeler

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Symmetry and repetition

Symmetry and repetition are features that can help accelerate your workflow. Symmetry and repetition can be confusing because they do very similar things, but they have important differences:

  • Symmetry can be enabled while sculpting in a layer. With symmetry enabled, brush strokes are duplicated in one or more places in the layer. This is useful to create symmetry within a layer.
    • Mirror symmetry allows you to sculpt symmetrically across a mirror plane. This is often useful for sculpting faces or other symmetric objects.
    • Radial symmetry duplicates your strokes multiple times around a single axis. This can be useful when sculpting repeating patterns like flowers.
    • Kaleidoscope symmetry behaves as if Radial and Mirror symmetry are on simultaneously.
  • Repetition can be enabled when working with layers and other scene objects.
    • Mirror repetition duplicates a layer or group across a mirror plane. This is useful when placing symmetric layers such as the wheels of a car or a creatures arms.
    • Radial repetition duplicates a layer or group around a single axis. This is helpful when creating complex patterns.
    • Kaleidoscope repetition behaves as if Radial and Mirror repetition are on simultaneously.

The important thing to remember is that Symmetry applies inside layers, while Repetition applies outside layers.

Note:

Symmetry is a destructive operation: if you place clay while symmetry is turned on, it changes the contents of the layer, and the only way to reverse the change is by undoing the operation.

Repetition is non-destructive, so you can turn repetition on or off at any time without having an irreversible effect on your scene.

Changing axis

You can change the axis of symmetry or the axis of repetition with the respective X/Y/Z buttons. Only one axis can be used at a time.

Symmetry

To use Symmetry:

  1. Scope into a layer.
  2. Open the Action menu.
  3. Select Mirror, Radial, or Kaleidoscope symmetry.
  4. Start sculpting. Notice that your brush strokes are duplicated in other places in the layer.

Just like normal sculpting, sculpting with symmetry on is considered destructive - it permanently modifies the layer. When using symmetry, it can be a good idea to create a new layer for symmetric content to avoid covering or accidentally modifying clay in an existing layer.

Repetition

Repetition can only be enabled when you are not scoped into a layer. To use repetition:

  1. Ensure that you are not scoped into a layer.
  2. Use the Select tool to select a layer or group.
  3. Open the Action menu.
  4. Select Mirror repetition, Radial repetition, or both.

Repetition uses instancing to create duplicates of the original layer or group. As a result, repetition is not considered destructive - it does not permanently alter clay on a layer. You can turn repetition on or off at any time, or modify the number of instances radial repetition creates, without modifying clay.

Note:

Just like with Symmetry, when you turn on Mirror and Radial repetition at the same time, objects will be repeated across the mirror plane and about the radial axis. For example, if you have Radial repetition set to 5 duplicates, and Mirror repetition is turned on, your object will be duplicated 10 times.

Examples

This piece by Ryan Corniel makes heavy use of repetition and symmetry to create an otherworldly paper insect.

Nikie Monteleone created this piece with a heavy focus on Radial repetition.

 Adobe

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