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The SEDRIS Data Representation Model
APPENDIX A - Classes Polyhedron |
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An instance of this DRM class is a <Volume Geometry> instance that encloses a bounded region of three-dimensional space.
Consider a <Polyhedron> instance representing a building. It has a collection of <Polygon> components that defines its shape, an associated <Geometry Volume> instance that defines its topological relationships, a <Classification Data> component that classifies it as an ECC_BUILDING, <Property Value> components that describe its characteristics (such as material composition), and a <Label> instance that identifies it as "The Empire State Building".
No. In order for <Polyhedron> instances to exist, the SRF must be three-dimensional, and at least four <Polygon> instances that enclose a region of space must exist.
EXAMPLE A <Polygon> instance can be decomposed into multiple <Polygon> instances representing subfaces.
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