import { Object3D, Vector2, Vector3 } from 'three';
export type VectorObject3D = Vector2 | Vector3 | Object3D;
export type ObjVec3 = Vector3 | Object3D;
export declare class VectorUtils {
    static readonly DEFAULT_NORMAL: Vector3;
    static getPositionFromObject3D(item: VectorObject3D): Vector3;
    static getPositionsFromObject3D(items: VectorObject3D[]): Vector3[];
    static computeSign(point: Vector3, origin: Vector3, normal: Vector3): number;
    static haveSameDirection(v1: Vector3, v2: Vector3, tolerance?: number): boolean;
    static haveOppositeDirection(v1: Vector3, v2: Vector3, tolerance?: number): boolean;
    static perpendicular(dir: Vector3, target?: Vector3, normal?: Vector3): Vector3;
    static perpendicularSigned(dir: Vector3, referencePoint: Vector3, target?: Vector3, normal?: Vector3): Vector3;
    static perpendicularByPoints(p1: ObjVec3, p2: ObjVec3, target?: Vector3, normal?: Vector3): Vector3;
    static perpendicularSignedByPoints(p1: ObjVec3, p2: ObjVec3, refPoint: ObjVec3, target?: Vector3, normal?: Vector3): Vector3;
    static bisector(v1: Vector3, v2: Vector3, target?: Vector3): Vector3;
    static bisectorByPoints(p1: ObjVec3, p2: ObjVec3, center: ObjVec3, target?: Vector3): Vector3;
    static arePointsOnSameSide(origin: ObjVec3, dir: Vector3, points: ObjVec3[]): boolean;
    static arePointsOnSameSideByPoints(p1: ObjVec3, p2: ObjVec3, points: ObjVec3[], normal?: Vector3): boolean;
    static angleSignedFromOrigin(a: Vector3, b: Vector3, normal?: Vector3): number;
    static angleSignedByPoints(p1: ObjVec3, p2: ObjVec3, center: ObjVec3, normal?: Vector3): number;
    static projectOnLine(point: ObjVec3, l1: ObjVec3, l2: ObjVec3, target?: Vector3): Vector3;
}
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