API Reference > geometry-core > Topology > HalfEdgePositionDetail HalfEdgePositionDetail Class Description of a generalized position within a graph, categorized as: "at a certain node around a vertex" "at a fractional position along an edge "within a face" Methods Name Description clonePoint(result?: Point3d): Point3d Return the (clone of, or optional filled in result) coordinates from this detail. getDTag(): number | undefined getITag(): number | undefined getTopo(): HalfEdgeTopo isAtXY(x: number, y: number): boolean resetAsFace(node?: , xyz?: XYAndZ): HalfEdgePositionDetail reassign contents so this instance becomes a face hit. resetAsUndefinedWithTag(dTag: number): HalfEdgePositionDetail reassign contents so this instance has dTag but no node or HalfEdgeTopo resetAsUnknown(): void reset to null topo state. resetAsVertex(node: ): HalfEdgePositionDetail Create with node and (optional) xyz, marked as "HalfEdgeTopo.Vertex" resetAtEdgeAndFraction(node: , edgeFraction: number): HalfEdgePositionDetail reassign contents so this instance becomes an edge hit setDTag(value: number): void setFrom(other: HalfEdgePositionDetail): void Copy (clones of) all data from other setITag(value: number): void setXYZFromNode(node: ): void Copy x,y,z from the node to this instance local values. create(): HalfEdgePositionDetail Static Create with null data. createEdgeAtFraction(node: , edgeFraction: number): HalfEdgePositionDetail Static Create with node, fraction along edge, marked as "HalfEdgeTopo.Edge". createVertex(node: ): HalfEdgePositionDetail Static Create at a node. Properties Name Type Description edgeFraction Accessor ReadOnly number | undefined Return the (possibly undefined) edge fraction. isEdge Accessor ReadOnly boolean Return true if this detail is marked as being within an edge. isFace Accessor ReadOnly boolean Return true if this detail is marked as being within a face. isUnclassified Accessor ReadOnly boolean Return true if this detail has no vertex, edge, or face qualifier. isVertex Accessor ReadOnly boolean Return true if this detail is marked as being at a vertex. node Accessor ReadOnly | undefined Return the node reference from this detail x number The current coordinates y number z number Defined in core/geometry/src/topology/HalfEdgePositionDetail.ts Line 31 Last Updated: 13 June, 2024