- 所有已实现的接口:
- IfcInterface, IfcLayeredItem
- 直接已知子类:
- IfcEdgeCurve, IfcOrientedEdge, IfcSubedge
@IfcClass(type=ENTITY,
layer=RESOURCE)
public class IfcEdge
extends IfcTopologicalRepresentationItem
An edge is the topological construct corresponding to the connection of two vertices.
More abstractly, it may stand for a logical relationship between two vertices.
The domain of an edge, if present, is a finite, non-self-intersecting open curve in RM, that is, a connected 1-dimensional manifold. The bounds of an edge are two vertices, which need not be distinct.
The edge is oriented by choosing its traversal direction to run from the first to the second vertex.
If the two vertices are the same, the edge is a self loop. The domain of the edge does not include its bounds, and 0 ≤ Ξ ≤ ∞. Associated with an edge may be a geometric curve to locate the edge in a coordinate space; this is represented by the edge curve (IfcEdgeCurve) subtype. The curve shall be finite and non-self-intersecting within the domain of the edge.
- 作者:
- zaiyuan