程序包 org.sikongsphere.ifc.model.schema.resource.topology.entity

类概要

类	说明
IfcClosedShell	In the current IFC Release only poly loops (IfcPolyLoop) are defined for bounds of face bound (IfcFaceBound).
IfcConnectedFaceSet	A connected_face_set is a set of faces such that the domain of faces together with their bounding edges and vertices is connected.
IfcEdge	An edge is the topological construct corresponding to the connection of two vertices.
IfcEdgeCurve	An edge curve is a special subtype of edge which has its geometry fully defined.
IfcEdgeLoop	An edge_loop is a loop with nonzero extent.
IfcFace	A face is a topological entity of dimensionality 2 corresponding to the intuitive notion of a piece of surface bounded by loops.
IfcFaceBound	A face bound is a loop which is intended to be used for bounding a face.
IfcFaceOuterBound	A face outer bound is a special subtype of face bound which carries the additional semantics of defining an outer boundary on the face.
IfcFaceSurface	A face surface (IfcFaceSurface) is a subtype of face in which the geometry is defined by an associated surface.
IfcLoop	A loop is a topological entity constructed from a single vertex, or by stringing together connected (oriented) edges, or linear segments beginning and ending at the same vertex.
IfcOpenShell	An open shell is a shell of the dimensionality 2.
IfcOrientedEdge	An oriented edge is an edge constructed from another edge and contains a BOOLEAN direction flag to indicate whether or not the orientation of the constructed edge agrees with the orientation of the original edge.
IfcPath	A path is a topological entity consisting of an ordered collection of oriented edges, such that the edge start vertex of each edge coincides with the edge end of its predecessor.
IfcPolyLoop	A poly loop is a loop with straight edges bounding a planar region in space.
IfcSubedge	A subedge is an edge whose domain is a connected portion of the domain of an existing edge.
IfcTopologicalRepresentationItem	The topological representation item is the supertype for all the topological representation items in the geometry resource.
IfcVertex	A vertex is the topological construct corresponding to a point.
IfcVertexLoop	A vertex_loop is a loop of zero genus consisting of a single vertex.
IfcVertexPoint	A vertex point is a vertex which has its geometry defined as a point.