import { ScadNumber } from '../../types/ScadNumber';
import { undef } from '../../types/undef';
import { Chainable } from '../../util/Chainable';
import { ITransformation } from '../internals';
declare type Params = {
    center?: boolean;
    convexity?: ScadNumber;
    twist?: string | undef;
    slices?: ScadNumber | undef;
    scale?: ScadNumber;
    $fn?: ScadNumber;
};
export declare type LinearExtrude = ITransformation<'linear_extrude', {
    height: ScadNumber;
} & Params>;
export declare function linear_extrude(this: Chainable, height: ScadNumber, params?: Params): LinearExtrude & import("../../util/Chainable").ScadMethods;
export declare namespace linear_extrude {
    var defaultParams: Params;
}
export {};