How <Environment Root> Represents the Environment

• The geometric representation in this example is organized as a <Union Of Primitive Geometry>, where the primitive geometry consists of <Polygon> instances.

• Under the "union" organizing principle, a "bag of stuff" — another level of organization or actual primitives, depending on the organizer's class — is grouped together. "Union" is the simplest kind of organization.

• If all higher-level organization semantics are stripped away, all geometric organizations ultimately boil down to combinations of

  • <Union Of Primitive Geometry>
  • <Property Grid Hook Point> (covered later)

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