import { TransformedPoint, Point3D } from '../types';
import { ShapeInstance } from './shape';
export type Triangle<Datum> = TransformedPoint<Datum>[] & {
    ccw: boolean;
    centroid: Point3D;
};
interface Triangles3DInstance<Datum = Point3D> extends ShapeInstance<Datum> {
    data(data: Datum[][]): Triangle<Datum>[];
    draw(triangles: Datum[]): string;
}
export declare function triangles3D<Datum = Point3D>(): Triangles3DInstance<Datum>;
export {};