The SEDRIS Data Representation Model
APPENDIX A - Classes
Perimeter Related Geometry Topology

Class Name: Perimeter Related Geometry Topology

Superclass - <Geometry Topology Hierarchy>

Subclasses

This DRM class is concrete and has no subclasses.

Definition

An instance of this DRM class is a <Geometry Topology Hierarchy> instance that spatially organizes its components into a collection of (potentially) irregularly shaped regions, each defined by a <Perimeter Data> link object.

Primary Page in DRM Diagram:

Secondary Pages in DRM Diagram:

This class appears on only one page of the DRM class diagram.

Example

  1. Consider a plat of a residential subdivision whose streets and driveways are represented using <Polygon> instances organized by a <Perimeter Related Geometry> instance. To represent the geometric topology of the subdivision, the <Perimeter Related Geometry> instance has a <Perimeter Related Geometry Topology> component that represents the set of all <Geometry Topology> instances showing how the driveways of houses in the subdivision are connected to the streets of the subdivision.

FAQs

No FAQs supplied.

Constraints

Composed of (two-way)

Component of (two-way) (inherited)

Inherited Field Elements

SE_Geometry_Topology_Level geometry_topology_level; 1

Notes

Fields Notes

geometry_topology_level

The geometry_topology_level field specifies the level of geometry topology that is present within the hierarchy represented by the <Geometry Topology Hierarchy> instance.


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Last updated: July 26, 2006 Copyright © 2006 SEDRIS