API Reference > geometry-core > CartesianGeometry > XY XY Class Minimal object containing x,y and operations that are meaningful without change in both point and vector. XY is not instantiable. The derived (instantiable) classes are Point2d Vector2d Extended by Point2d Vector2d Implements { T } Methods Name Description constructor(x: number = 0, y: number = 0): XY Protected distance(other: XAndY): number Return the distance from this point to other distanceSquared(other: XAndY): number Return squared distance from this point to other freeze(): void Freeze this instance (and its deep content) so it can be considered read-only isAlmostEqual(other: XAndY, tol?: number): boolean Returns true if this and other have equal x,y parts within Geometry.smallMetricDistance. isAlmostEqualMetric(other: XAndY): boolean returns true if x,y match other within metric tolerance isAlmostEqualXY(x: number, y: number, tol?: number): boolean Returns true if this and other have equal x,y parts within Geometry.smallMetricDistance. isExactEqual(other: XAndY): boolean returns true if the x,y components are exactly equal. magnitude(): number Return the magnitude of the vector magnitudeSquared(): number Return the squared magnitude of the vector. maxAbs(): number Return the largest absolute value of any component maxDiff(other: XAndY): number Return the largest absolute distance between corresponding components set(x: number = 0, y: number = 0): void Set both x and y. setFrom(other?: XAndY): void Set both x and y from other. setFromJSON(json?: XYProps): void Set x and y from a JSON source such as [1,2] or {x:1, y:2} setZero(): void Set both x and y to zero toJSON(): XYProps return a json array [x,y] toJSONXY(): XYProps return a json object {x: 1, y:2} unitVectorTo(target: XAndY, result?: Vector2d): Vector2d | undefined Return a unit vector from this point to other vectorTo(other: XAndY, result?: Vector2d): Vector2d Return a (full length) vector from this point to other crossProductToPoints(origin: XAndY, targetA: XAndY, targetB: XAndY): number Static cross product of vectors from origin to targets Properties Name Type Description isAlmostZero Accessor ReadOnly boolean returns true if the x,y components are both small by metric metric tolerance x number x component y number y component Defined in core/geometry/src/geometry3d/Point2dVector2d.ts Line 23 Last Updated: 13 June, 2024