Class Name: Feature Node
Subclasses
This DRM class is concrete and has no subclasses.
Definition
An instance of this DRM class is a zero-dimensional
<Feature Topology> instance specifying the location of a
<Point Feature> instance and/or an endpoint of one or more
<Feature Edge> instances.
Primary Page in DRM Diagram:
Secondary Pages in DRM Diagram:
Example
A single <Feature Node> instance represents
the location of a small building.
The <Feature Node> instance represents
the intersection of two roads.
FAQs
-
When are <Feature Node> instances required?
<Feature Node> instances are required
whenever either <Point Feature> or
<Feature Edge> instances are present, regardless
of the feature topology level.
-
Are there any geometric constraints on the
<Location> component of a
<Feature Node> instance?
Yes. At all feature topology levels greater than zero, different
<Feature Node> instances cannot share the same
<Location> component.
Constraints
Associated with (two-way)
Composed of (two-way) (inherited)
Composed of (two-way)
Component of (two-way) (inherited)
Inherited Field Elements
This class has no inherited field elements.
Notes
Associated with Notes
This relationship indicates the collection of
<Feature Edge> instances that are bounded by the
<Feature Node> instance, if any. For each
<Feature Edge> instance associated with the
<Feature Node> instance through the use of
an <Edge Direction> link object with
a forwards field value of
SE_TRUE, the <Feature Node> instance
is the starting node of the <Feature Edge> instance. For
each <Feature Edge> instance associated with the
<Feature Node> through the use of
an <Edge Direction> link object with
a forwards field value of
SE_FALSE, the
<Feature Node> instance is the ending node of the
<Feature Edge> instance.
This relationship indicates that the <Feature Node>
instance is contained in the <Feature Face>
instance.
This relationship indicates that the <Feature Node>
instance is contained in the <Feature Volume>
instance.
Prev: Feature Model Instance.
Next: Feature Representation.
Up:Index.