Geometry Primitives Model

A general 3D spatial unit is an abstract represented a closed solid or multi-solid or other valid geometry from which a solid can be derived.

Abstract superclass for the set of 3-Dimensional Geometric Primitives which may be used to define 3D geometries and calculate alternative representations of interior, face and topology of an object in 3D cartesian space.

A Boundary Line is a feature whose geometry is a connected set of lines representing the common part of two polygons share this set of oriented lines. As a feature it can participate in topological relationships between features that may, or may not, have planar geometry representations, and observations about the nature of the boundary can be made. The inner and outer features may be swapped by inverting the orientation of the geometry primitive, thus a single orientable boundary line may be used to partially define boundaries of both touching features. An oriented linear ring geometry representation for the planar extend of a bounded feature may be calculated from the geometries of the set of boundary features, using the inward or outward topology to adjust orientation accoridingly.

A Boundary Face is a feature whose geometry is the orientable (possibly composite) surface where two solids touch. As a feature it can participate in topological relationships between features that may, or may not, have solid geometry representations, and observations about the nature of the face can be made. The inner and outer features may be swapped by inverting the orientation of the geometry primitive, thus a single orientable boundary face may be used to define boundary faces of both touching features. The shell of a feature may be computed from the set of faces defining boundaries.

A Boundary Feature is a topological concept - an object relates to a specific geometry type and adds information about the orientation of the geometry relative to topologically connected features. Note that a Featuredefined without specifiying the underlying geometry if required, allowing for example the geometry to be measured or calculated by operations on the geometries of related features.

A Boundary Node is a feature whose geometry is a single Point representing the touching of two or more features at a single node. As a feature it can participate in topological relationships between features that may, or may not, have planar geometry representations.

The description of an a limit for extension of a geometric object to form object of higher dimensionality (e.g. solid from a surface, line or point, line from a point). Implementations must provide a conversion function to an equivalent higher dimensional object bounded by appropriate horizons.

A volume defined by a Curve extended in 2 additional dimensions.

A higher dimension geometry generated by extending from a lower dimensional primitive.

Is this a plane only - assumption is its extended from a surface, and that surface can be defined as a plane if this is the intended implementation.

Implementable using GeoJSON FeatureCollection schema