API Reference > geometry-core > Curve > UnionRegion UnionRegion Class A UnionRegion is a collection of other planar region types -- Loop and ParityRegion. The composite is the union of the contained regions. A point is "in" the composite if it is "in" one or more of the contained regions. Extends CurveCollection Methods Name Description constructor(): UnionRegion Constructor -- initialize with no children announceToCurveProcessor(processor: RecursiveCurveProcessor, indexInParent: number = -1): void dispatch to more strongly typed processor.announceUnionRegion(this, indexInParent) cloneEmptyPeer(): UnionRegion Return new empty UnionRegion cloneStroked(options?: StrokeOptions): UnionRegion Return structural clone with stroked primitives. dgnBoundaryType(): number Return the boundary type (5) of a corresponding MicroStation CurveVector dispatchToGeometryHandler(handler: GeometryHandler): any Second step of double dispatch: call handler.handleUnionRegion(this) getChild(i: number): Loop | ParityRegion | undefined Return a child identified by index. isSameGeometryClass(other: GeometryQuery): boolean test if other is a UnionRegion tryAddChild(child: AnyCurve): boolean add a child. create(...data: Array<ParityRegion | Loop>): UnionRegion Static Create a UnionRegion with given region children Inherited methods Name Inherited from Description checkForNonLinearPrimitives(): boolean CurveCollection return true if the curve collection has any primitives other than LineSegment3d and LineString3d clone(): CurveCollection | undefined CurveCollection Return a deep copy. cloneTransformed(transform: Transform): CurveCollection | undefined CurveCollection Create a deep copy of transformed curves. cloneWithExpandedLineStrings(): CurveCollection | undefined CurveCollection Create a deep copy with all linestrings expanded to multiple LineSegment3d. collectCurvePrimitives(collectorArray?: CurvePrimitive[], smallestPossiblePrimitives: boolean = false): CurvePrimitive[] CurveCollection Return an array containing only the curve primitives. extendRange(rangeToExtend: Range3d, transform?: Transform): void CurveCollection Extend (increase) rangeToExtend as needed to include these curves (optionally transformed) isAlmostEqual(other: GeometryQuery): boolean GeometryQuery test for exact structure and nearly identical geometry. maxGap(): number CurveCollection return the max gap between adjacent primitives in Path and Loop collections. range(transform?: Transform, result?: Range3d): Range3d GeometryQuery return the range of the entire (tree) GeometryQuery sumLengths(): number CurveCollection Return the sum of the lengths of all contained curves. tryTransformInPlace(transform: Transform): boolean CurveCollection Apply transform recursively to children tryTranslateInPlace(dx: number, dy: number = 0, dz: number = 0): boolean GeometryQuery try to move the geometry by dx,dy,dz createCurveLocationDetailOnAnyCurvePrimitive(source: GeometryQuery | undefined, fraction: number = 0.5): CurveLocationDetail | undefined Static CurveCollection * Find any curve primitive in the source. Properties Name Type Description _children Protected Array<ParityRegion | Loop> collection of Loop and ParityRegion children. children Accessor ReadOnly Array<ParityRegion | Loop> Return the array of regions curveCollectionType "unionRegion" = "unionRegion" String name for schema properties Inherited properties Name Type Inherited from Description geometryCategory "curveCollection" = "curveCollection" CurveCollection String name for schema properties isAnyRegionType Accessor ReadOnly boolean CurveCollection Return true for planar region types:* Loop* ParityRegion* UnionRegion isClosedPath Accessor ReadOnly boolean CurveCollection Return true for a single-loop planar region type, i.e. Loop.* This is _not- a test for physical closure of a Path isInner boolean CurveCollection Flag for inner loop status. isOpenPath Accessor ReadOnly boolean CurveCollection Return true for a Path, i.e. a chain of curves joined head-to-tail Defined in core/geometry/src/curve/UnionRegion.ts Line 23 Last Updated: 13 June, 2024