import * as THREE from "three";
import type { Vector3Tuple } from "three";
/**
 * Extended THREE.Box3 for CAD-specific bounding box calculations.
 * Handles ObjectGroup instances and excludes clipping plane meshes.
 */
declare class BoundingBox extends THREE.Box3 {
    /**
     * Expand the bounding box to include an object.
     * For ObjectGroup instances, only the first mesh (faces) is considered.
     * Clipping plane meshes (PlaneMeshes/StencilPlane) are excluded.
     */
    expandByObject(object: THREE.Object3D, precise?: boolean): this;
    /**
     * Calculate the maximum distance from the origin to any corner of the box.
     */
    max_dist_from_center(): number;
    /**
     * Get the bounding sphere of this box.
     */
    boundingSphere(): THREE.Sphere;
    /**
     * Get the center point of this box as an array.
     */
    center(): Vector3Tuple;
}
/**
 * Visual helper for displaying a bounding box as wireframe lines.
 * Extends THREE.LineSegments to render the 12 edges of a box.
 */
declare class BoxHelper extends THREE.LineSegments {
    type: "BoxHelper";
    geometry: THREE.BufferGeometry & {
        attributes: {
            position: THREE.BufferAttribute;
        };
    };
    object: THREE.Object3D | undefined;
    /**
     * Create a BoxHelper for visualizing an object's bounding box.
     */
    constructor(object: THREE.Object3D, color?: number);
    /**
     * Update the helper geometry to match the current bounding box.
     * Should be called when the target object changes.
     */
    update(): void;
    /**
     * Set the target object and update the helper.
     */
    setFromObject(object: THREE.Object3D): this;
    /**
     * Dispose of geometry and material resources.
     */
    dispose(): void;
}
export { BoundingBox, BoxHelper };