API Reference > imodeljs-common > Serialization > EGFBAccessors > EGFBAccessors.ArcPrimitive > vector90 vector90 Method vector90(obj?: EGFBAccessors.DVec3d): | EGFBAccessors.DVec3d Parameter Type Description obj EGFBAccessors.DVec3d Returns - | EGFBAccessors.DVec3d DVec3d|null Defined in core/common/src/geometry/ElementGeometryFB.ts Line 1021 Last Updated: 12 June, 2024