Definition

The following restrictions apply.

1. The <Location> instances within a <Feature Edge> instance shall be distinct; that is, no two <Location> instances may have the same position in space.

2. <Feature Edge> instances may meet only at <Feature Node> instances, and <Feature Face> instances may meet only along one or more <Feature Edge> instances.

3. At feature topology level 2 or higher, no <Feature Edge> instance may intersect with or overlap another <Feature Edge> instance.

4. At feature topology level 3, each <Feature Edge> instance forms part of the boundaries of exactly two <Feature Face> instances.

5. At feature topology level 4, at least one <Feature Edge> instance forms part of the boundary of more than two <Feature Face> instances.

6. At feature topology level 5, if a <Feature Edge> instance E is located within a <Feature Volume> instance V, E shall associate to V.

Rationale

The path defined by the sequence of line segments which connect the consecutive <Location> instances that make up a <Feature Edge> instance shall not intersect or overlap itself.

Example

No example supplied.

FAQs

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