import { EllipseCurve } from 'three';
/**
 * A 3D version of three.js EllipseCurve that returns Vector3 points.
 * Useful for creating circular/elliptical 3D paths for TubeGeometry and TubeShapeGeometry.
 *
 * Note: EllipseCurve extends Curve<Vector2>, but this override returns Vector3 at runtime.
 * Type casts may be needed when passing to APIs expecting Curve<Vector3>.
 */
export declare class EllipseCurve3D extends EllipseCurve {
    readonly type: string | 'EllipseCurve3D';
    constructor(aX?: number, aY?: number, xRadius?: number, yRadius?: number, aStartAngle?: number, aEndAngle?: number, aClockwise?: boolean, aRotation?: number);
    getPoint(t: number, optionalTarget?: any): import('three').Vector2;
}
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