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IEnvelope3D Interface (ArcObjects .NET 10.5 SDK)
ArcObjects Library Reference (Geometry)  

IEnvelope3D Interface

Provides access to methods on 3D envelopes.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Members

Description
Method Intersect3D Adjusts to include only the volume also included by inEnvelope.
Method Union3D Adjusts to encapsulate inEnvelope.

CoClasses that implement IEnvelope3D

CoClasses and Classes Description
Envelope A rectangle with sides parallel to a coordinate system defining the extent of another geometry; optionally has min and max measure, height and ID attributes.