The SEDRIS Data Representation Model
APPENDIX B - Constraints
Distinct Geometric Centre

Definition

If an instance of <Aggregate Geometry> specifies more than one <Geometric Centre> component, each shall specify a different value for its meaning field.

Rationale

At any given point in time, a body cannot have more than point serving as a specific <Geometric Centre>.

Example

  1. Let G be the SEDRIS object that is the root of the geometric representation of a body B, such that G has a <Geometric Centre> representing B's SE_GEOM_CTR_CODE_CENTRE_OF_MASS. G cannot have another <Geometric Centre> component with meaning = SE_GEOM_CTR_CODE_CENTRE_OF_MASS, because no body B can have two different centres of mass at the same time.

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Last updated: July 16, 2004 Copyright © 2004 SEDRIS™