API Reference > geometry-core > Curve > ParityRegion

ParityRegion Class

  • A ParityRegion is a collection of Loop objects.
  • The loops collectively define a planar region.
  • A point is "in" the composite region if it is "in" an odd number of the loops.

Extends

Methods

Name Description
constructor(): ParityRegion Construct parity region with empty loop array  
addLoops(data?: Loop | Loop[] | Loop[][]): void Add loops (recursively) to this region's children  
announceToCurveProcessor(processor: RecursiveCurveProcessor, indexInParent: number = -1): void invoke processor.announceParityRegion(this, indexInParent)  
clone(): ParityRegion Return a deep copy.  
cloneEmptyPeer(): ParityRegion Create a new empty parity region.  
cloneStroked(options?: StrokeOptions): ParityRegion Stroke these curves into a new ParityRegion.  
dgnBoundaryType(): number Return the boundary type (4) of a corresponding MicroStation CurveVector  
dispatchToGeometryHandler(handler: GeometryHandler): any Second step of double dispatch: call handler.handleRegion(this)  
getChild(i: number): Loop | undefined Get child i by index.  
isSameGeometryClass(other: GeometryQuery): boolean Test if other is an instance of ParityRegion  
tryAddChild(child: AnyCurve | undefined): boolean Add child to this parity region.  
create(...data: Loop[]): ParityRegion Static Create a parity region with given loops  
createLoops(data?: Loop | Loop[] | Loop[][]): Loop | ParityRegion Static Return a single loop or parity region with given loops.  

Inherited methods

Name Inherited from Description
checkForNonLinearPrimitives(): boolean CurveCollection return true if the curve collection has any primitives other than LineSegment3d and LineString3d
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(): 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 Loop[] Array of loops in this parity region.  
children Accessor ReadOnly Loop[] Return the array of loops in this parity region.  
curveCollectionType "parityRegion" = "parityRegion" 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

Last Updated: 08 January, 2020