import { type Vec3 } from '@quake2ts/shared';
import type { BspMap, BspVisibility } from '../assets/bsp.js';
import { type FrustumPlane } from './culling.js';
export interface VisibleFace {
    readonly faceIndex: number;
    readonly leafIndex: number;
    readonly sortKey: number;
}
export declare function isClusterVisible(visibility: BspVisibility | undefined, fromCluster: number, testCluster: number): boolean;
export declare function findLeafForPoint(map: BspMap, point: Vec3): number;
export declare function calculateReachableAreas(map: BspMap, startArea: number, portalState: ReadonlyArray<boolean>): Set<number>;
export declare function gatherVisibleFaces(map: BspMap, cameraPosition: Vec3, frustum: readonly FrustumPlane[], portalState?: ReadonlyArray<boolean>): VisibleFace[];
//# sourceMappingURL=bspTraversal.d.ts.map