/**
 * Face Operations
 *
 * Additional face manipulation operations for cubes and meshes
 */
import { Mesh } from '../geometry/mesh';
import { MeshFace } from '../geometry/mesh_face';
import { Vector3 } from './transform';
/**
 * Delete faces from a mesh
 */
export declare function deleteFaces(mesh: Mesh, faceKeys: string[]): {
    deletedFaces: number;
    deletedVertices: string[];
};
/**
 * Flip face normals (invert vertex order)
 */
export declare function flipFaces(mesh: Mesh, faceKeys: string[]): number;
/**
 * Triangulate a face (convert to triangles)
 */
export declare function triangulateFace(mesh: Mesh, faceKey: string): string[];
/**
 * Triangulate multiple faces
 */
export declare function triangulateFaces(mesh: Mesh, faceKeys: string[]): string[];
/**
 * Triangulate all faces in a mesh
 */
export declare function triangulateMesh(mesh: Mesh): string[];
/**
 * Move face along its normal
 */
export declare function moveFace(mesh: Mesh, faceKey: string, distance: number): void;
/**
 * Move multiple faces along their normals
 */
export declare function moveFaces(mesh: Mesh, faceKeys: string[], distance: number): void;
/**
 * Duplicate faces
 */
export declare function duplicateFaces(mesh: Mesh, faceKeys: string[]): string[];
/**
 * Bridge two faces (connect them with side faces)
 */
export declare function bridgeFaces(mesh: Mesh, faceKey1: string, faceKey2: string): string[];
/**
 * Get face area
 */
export declare function getFaceArea(face: MeshFace, mesh: Mesh): number;
/**
 * Get total area of multiple faces
 */
export declare function getFacesArea(faces: MeshFace[], mesh: Mesh): number;
/**
 * Select faces by criteria
 */
export interface FaceSelectionCriteria {
    /**
     * Minimum area
     */
    minArea?: number;
    /**
     * Maximum area
     */
    maxArea?: number;
    /**
     * Face must have specific texture
     */
    texture?: string | false | null;
    /**
     * Face must be triangle
     */
    isTriangle?: boolean;
    /**
     * Face must be quad
     */
    isQuad?: boolean;
    /**
     * Face normal must point in specific direction
     */
    normalDirection?: Vector3;
}
/**
 * Select faces matching criteria
 */
export declare function selectFacesByCriteria(mesh: Mesh, criteria: FaceSelectionCriteria): string[];
/**
 * Merge coplanar faces
 */
export declare function mergeCoplanarFaces(mesh: Mesh, faceKeys: string[], tolerance?: number): string[];
/**
 * Split face at edge
 */
export declare function splitFaceAtEdge(mesh: Mesh, faceKey: string, edge: [string, string], newVertexKey: string): string[];
//# sourceMappingURL=face_operations.d.ts.map