Locator

A locator is a point with orientation.

Some typical use cases of a locator:

• An indicator of an important location in a 3D scene or object.
• A placeholder for a more complex 3D object.
• As a snap or connection point between 3D objects.
• A grip or handle to move geometry in a 3D view.
• A lightweight carrier of metadata or attributes.

Locator primitive

The locator concept is expressed via a LocatorPrimitive. This primitive is essentially a point with orientation. It has the following properties:

• An ID: a user-settable persistent ID
• A transform matrix: this gives the locator its position and orientation.
• Semantic type: can be used to turn a locator into a more complex concept, like a snapping point.
• This primitive is a 3D object, and can be transformed like one, for example using a transform node.

As with all primitives, it can carry attributes.

Locator node

To create one or more locators, use the locator node.