import { Vector3 } from './../../math/Vector3';
import { Curve } from './../core/Curve';

// Extras / Curves /////////////////////////////////////////////////////////////////////
export namespace CurveUtils {
	export function tangentQuadraticBezier(
		t: number,
		p0: number,
		p1: number,
		p2: number
	): number;
	export function tangentCubicBezier(
		t: number,
		p0: number,
		p1: number,
		p2: number,
		p3: number
	): number;
	export function tangentSpline(
		t: number,
		p0: number,
		p1: number,
		p2: number,
		p3: number
	): number;
	export function interpolate(
		p0: number,
		p1: number,
		p2: number,
		p3: number,
		t: number
	): number;
}

export class CatmullRomCurve3 extends Curve<Vector3> {

	/**
	 * @param [points=[]]
	 * @param [closed=false]
	 * @param [curveType='centripetal']
	 * @param [tension=0.5]
	 */
	constructor(
		points?: Vector3[],
		closed?: boolean,
		curveType?: string,
		tension?: number
	);

	/**
	 * @default 'CatmullRomCurve3'
	 */
	type: string;

	/**
	 * @default []
	 */
	points: Vector3[];

}