import { vtkObject } from './../../interfaces';
import { splineKind } from './Spline3D/Constants';

export interface ISpline3DInitialValues {
  close?: boolean;
  intervals?: any;
  kind?: splineKind;
  tension?: number;
  continuity?: number;
  bias?: number;
}

export interface vtkSpline3D extends vtkObject {
  /**
   *
   * @param points
   */
  computeCoefficients(points: number[]): void;

  /**
   *
   * @param {Number} intervalIndex
   * @param {Number} t
   */
  getPoint(intervalIndex: number, t: number): number[];
}

/**
 * Method used to decorate a given object (publicAPI+model) with vtkSpline3D characteristics.
 *
 * @param publicAPI object on which methods will be bounds (public)
 * @param model object on which data structure will be bounds (protected)
 * @param {ISpline3DInitialValues} [initialValues] (default: {})
 */
export function extend(
  publicAPI: object,
  model: object,
  initialValues?: ISpline3DInitialValues
): void;

/**
 * Method used to create a new instance of vtkSpline3D.
 * @param {ISpline3DInitialValues} [initialValues] for pre-setting some of its content
 */
export function newInstance(
  initialValues?: ISpline3DInitialValues
): vtkSpline3D;

/**
 * vtkSpline3D provides methods for creating a 1D cubic spline object from given
 * parameters, and allows for the calculation of the spline value and derivative
 * at any given point inside the spline intervals.
 */
export declare const vtkSpline3D: {
  newInstance: typeof newInstance;
  extend: typeof extend;
};
export default vtkSpline3D;