import { Modifier } from './Modifier';
/**
 *
 * @category Modifiers.Settings
 * @export
 * @interface ISmoothSettings
 */
export interface ISmoothSettings {
    tension?: number;
    level?: number;
    closed?: boolean;
}
/**
 * Smooth the corners
 *
 * @category Modifiers
 * @class Smooth
 * @extends {Modifier}
 */
declare class Smooth extends Modifier {
    private tension;
    private level;
    private closed;
    constructor(args?: ISmoothSettings);
    apply(buffer: Float32Array, bClosed: boolean): Float32Array;
    /**
     * Chaikin smooth
     *
     * the tension factor defines a scale between corner cutting distance in segment half length,
     * i.e. between 0.05 and 0.45. The opposite corner will be cut by the inverse
     * (i.e. 1-cutting distance) to keep symmetry.
     * with a tension value of 0.5 this amounts to 0.25 = 1/4 and 0.75 = 3/4,
     * the original Chaikin values
     *
     * @link https://www.codeproject.com/Articles/1093960/D-Polyline-Vertex-Smoothing
     * @param buffer
     */
    static smooth(buffer: Float32Array, tension?: number, bClosed?: boolean): Float32Array;
}
export { Smooth };
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