The SEDRIS Data Representation Model
APPENDIX A - Classes
Geometric Centre

Class Name: Geometric Centre

Superclass - <SEDRIS Abstract Base>

Subclasses

This DRM class is concrete and has no subclasses.

Definition

An instance A of this DRM class is a component of an <Aggregate Geometry> instance B - that is, of an instance of a concrete subclass of <Aggregate Geometry> - where B represents a "body" such that the <Location 3D> instance specified by A has the semantic indicated by A's meaning field.

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 <Model> instance S providing a geometric representation of an ECC_SAILING_VESSEL as follows, where the srf_info of the <Model> are specified to be LSR 3D.

    Geometric Centre, Example 1

    If S is instanced in a simulation where S is considered to be floating on water, the effects of the force of the water upon S can be computed for the SE_GEOM_CTR_CODE_CENTRE_OF_BUOYANCY <Geometric Centre> to determine how they apply to S as a whole.

  2. Consider a <Model> instance G providing a geometric representation of an ECC_GROUND_VEHICLE as follows, where the srf_info of the <Model> are specified to be LSR 3D.

    Geometric Centre, Example 2
  3. Consider a <Model> instance A providing a geometric representation of an ECC_AIRCRAFT as follows, where the srf_info of the <Model> are specified to be LSR 3D.

    Geometric Centre, Example 3

    If A is instanced in a simulation where A is considered to be in the air, the effects of the force of the air upon A can be computed for the SE_GEOM_CTR_CODE_CENTRE_OF_PRESSURE <Geometric Centre> to determine how they apply to A as a whole.

FAQs

No FAQs supplied.

Constraints

Composed of (two-way)

Component of (two-way)

Inherited Field Elements

This class has no inherited field elements.

Field Elements

SE_Geometric_Centre_Code meaning; (notes)

Notes

Fields Notes


meaning

 The meaning field specifies the semantic of the <Location 3D>
 component of the given instance of <Geometric Centre>.

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Last updated: July 16, 2004 Copyright © 2004 SEDRIS