import { type AnyNode, type AnyNodeId, type WallFinishLayout, type WallMiterData, type WallNode, type WallSlabSupportSegment } from '@pascal-app/core';
import * as THREE from 'three';
import { Brush } from 'three-bvh-csg';
import { type WallFaceBaseRun } from './wall-finish-data';
export { isWallInitialBuildActive } from './wall-build-lifecycle';
export { drainRebuiltWalls } from './wall-rebuild-notifications';
export declare function mergeWallCutoutBrushes(brushes: readonly Brush[]): {
    cutter: Brush | null;
    fallbackBrushes: Brush[];
    droppedCount: number;
};
/**
 * What decides a face triangle's material: the wall's finish layout (regions and
 * room spans) and, where the faces stand on different floors, each face's base —
 * region heights are measured from the face's own base.
 */
export type WallFinishContext = {
    layout: WallFinishLayout;
    faceBase: Record<'a' | 'b', WallFaceBaseRun[]> | null;
    /** The palette's finish refs (material indices 3..): the layout's, then the foundation's. */
    refs: readonly string[];
    /** The underpinning's stemwall: triangles below local y `top` take material `index`. */
    foundation: {
        index: number;
        top: number;
    } | null;
};
export declare function shouldDeferWallRebuild(wallId: string, nodes: Record<AnyNodeId, AnyNode>, rebuiltThisFrame: number, elapsedMs: number): boolean;
/** Rebuilds this system still owes — neighbours deferred during a drag. */
export declare function getPendingWallRebuildCount(): number;
export type WallGeometryAdapterContext = {
    isLive: (id: AnyNodeId) => boolean;
};
export type WallGeometryAdapter = {
    prepareChildren?: (wall: WallNode, children: readonly AnyNode[], context: WallGeometryAdapterContext) => {
        envelopeChildren: AnyNode[];
        renderChildren: AnyNode[];
    };
    buildGeometry?: (wall: WallNode, envelope: THREE.BufferGeometry, children: readonly AnyNode[]) => THREE.BufferGeometry;
    syncAuxiliaryGeometry?: (wall: WallNode, mesh: THREE.Mesh, geometry: THREE.BufferGeometry) => void;
};
export declare const WallSystem: ({ geometryAdapter }?: {
    geometryAdapter?: WallGeometryAdapter;
}) => null;
export declare function runWallBuildFrame(geometryAdapter?: WallGeometryAdapter): void;
/**
 * A room's wall finish lives on its zone, so a zone edit must rebuild the walls
 * bounding it — the old boundary and the new one. Zones without a wall finish
 * never touch their walls, so ordinary room edits cost nothing here.
 */
export declare function markWallsForZoneFinishChanges(): void;
type WallTerrainBottomSampler = (x: number, z: number) => number | null;
export declare function generateExtrudedWall(wallNode: WallNode, childrenNodes: AnyNode[], miterData: WallMiterData, slabElevation?: number, baseElevation?: number, baseSegments?: readonly WallSlabSupportSegment[], storeyHeight?: number, terrainBottomAt?: WallTerrainBottomSampler, faceBase?: {
    a: readonly WallSlabSupportSegment[];
    b: readonly WallSlabSupportSegment[];
}, finishLayout?: WallFinishLayout, sceneNodes?: Readonly<Record<string, AnyNode>>): THREE.BufferGeometry;
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