Motion 5 - Masking Objects in a 3D Project

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Masking Objects in a 3D Project

When working in a 3D project, you might want to mask a layer after it is transformed or
the camera is rotated. You can immediately switch a transformed object into a “work
view” using the Isolate button in the Layers list or Timeline, or the Isolate command in
the Object menu. After you add a camera to a project, the Isolate option becomes available
for any layer, group, or camera in the project.


Chapter 20

Using Shapes, Masks, and Paint Strokes

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Note: Masks can be applied to the layers in a 3D group, but not the 3D group itself (unless
you’ve activated the Flatten checkbox in the Group Inspector). For more information
about the Flatten checkbox, see

Mask Parameters


To isolate a layer


In the 3D project, select the layer to mask.

In this example, the center leopard image is the layer to be masked.

The Isolate button appears to the right of the layer name in the Layers list.

Note: A project must contain a camera before you can access the Isolate option.


Click the Isolate button or choose Object > Isolate.

Inactive Isolate button

Note: You can also Control-click the layer or group and choose Isolate from the shortcut


Chapter 20

Using Shapes, Masks, and Paint Strokes

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The layer is switched into “work view,” allowing you to mask the layer at its original


To return to your previous view (the view before you isolated the layer), click the Isolate
button again.

Active Isolate button

Note: Clicking a camera’s Isolate button activates that camera’s view.