/**
 * Layer management for Three.js rendering.
 *
 * Three.js supports 32 layers (0-31). Objects can be assigned to multiple layers,
 * and cameras can be configured to see specific layers.
 *
 * Usage:
 * - Objects: mesh.layers.set(SceneLayer.HELPERS) or mesh.layers.enable(SceneLayer.HELPERS)
 * - Cameras: camera.layers.enable(SceneLayer.HELPERS) to see that layer
 */
/**
 * Semantic layer assignments for scene objects.
 * Each layer is a bit position (0-31) in Three.js layer mask.
 */
export declare enum SceneLayer {
    /** Default layer for main scene objects (meshes, lights, etc.) */
    DEFAULT = 0,
    /** Camera helpers: frustums, preview planes, gizmos.
     * Visible to SceneCamera but hidden from virtual cameras by default. */
    CAMERA_HELPERS = 1
}
/**
 * Helper to set an object to a specific layer (exclusive).
 * The object will ONLY be on this layer.
 */
export declare function setLayer(object: THREE.Object3D, layer: SceneLayer): void;
/**
 * Helper to enable an additional layer on an object.
 * The object will be visible on both its current layers AND this layer.
 */
export declare function enableLayer(object: THREE.Object3D, layer: SceneLayer): void;
/**
 * Helper to disable a layer on an object.
 */
export declare function disableLayer(object: THREE.Object3D, layer: SceneLayer): void;
/**
 * Configure a camera to see the default scene layer and camera helpers.
 * This is the default configuration for the SceneCamera (editor camera).
 */
export declare function enableSceneCameraLayers(camera: THREE.Camera): void;
/**
 * Configure a camera to see only the default scene layer.
 * This is the default configuration for virtual cameras.
 */
export declare function enableVirtualCameraLayers(camera: THREE.Camera, showHelpers?: boolean): void;
import type * as THREE from 'three';