Rule Name: Attribute Set Components

Definition

An Attribute Set may contain attribute objects used by Geometry and/or Features. If it contains attribute objects that are used by Geometry and is referenced by a Feature, then the Geometry-related attribute objects are ignored. The reverse is also true.

Rationale

This allows Geometry and Features to use the same Attribute Set. This may be desirable if they share some of the same attribute objects; for example, if the Geometry is actually an alternate representation of the Feature.

Example

1. A Linear Feature is associated with a Union of Primitive Geometry that has been derived from it. Both reference the same Attribute Set that contains an Inline Color, Light Rendering Properties, and Browse Graphic. The Linear Feature uses the Inline Color and Browse Graphic objects, but ignores the Light Rendering Properties. The Union of Primitive Geometry uses the Inline Color and Light Rendering Properties, but ignores the Browse Graphic.

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