import { Matrix4 } from './Matrix4';
import { BufferAttribute } from './../core/BufferAttribute';
import { Vector3 } from './Vector3';

/**
 * ( interface Matrix<T> )
 */
export interface Matrix {
  /**
   * Array with matrix values.
   */
  elements: number[];

  /**
   * identity():T;
   */
  identity(): Matrix;

  /**
   * copy(m:T):T;
   */
  copy(m: this): this;

  /**
   * multiplyScalar(s:number):T;
   */
  multiplyScalar(s: number): Matrix;

  determinant(): number;

  /**
   * getInverse(matrix:T, throwOnInvertible?:boolean):T;
   */
  getInverse(matrix: Matrix, throwOnInvertible?: boolean): Matrix;

  /**
   * transpose():T;
   */
  transpose(): Matrix;

  /**
   * clone():T;
   */
  clone(): this;
}

/**
 * ( class Matrix3 implements Matrix<Matrix3> )
 */
export class Matrix3 implements Matrix {
  /**
   * Creates an identity matrix.
   */
  constructor();

  /**
   * Array with matrix values.
   */
  elements: number[];

  set(
    n11: number,
    n12: number,
    n13: number,
    n21: number,
    n22: number,
    n23: number,
    n31: number,
    n32: number,
    n33: number
  ): Matrix3;
  identity(): Matrix3;
  clone(): this;
  copy(m: Matrix3): this;
  setFromMatrix4(m: Matrix4): Matrix3;

  /**
   * @deprecated Use {@link Matrix3#applyToBufferAttribute matrix3.applyToBufferAttribute( attribute )} instead.
   */
  applyToBuffer(
    buffer: BufferAttribute,
    offset?: number,
    length?: number
  ): BufferAttribute;

  applyToBufferAttribute(attribute: BufferAttribute): BufferAttribute;

  multiplyScalar(s: number): Matrix3;
  determinant(): number;
  getInverse(matrix: Matrix3, throwOnDegenerate?: boolean): Matrix3;

  /**
   * Transposes this matrix in place.
   */
  transpose(): Matrix3;
  getNormalMatrix(matrix4: Matrix4): Matrix3;

  /**
   * Transposes this matrix into the supplied array r, and returns itself.
   */
  transposeIntoArray(r: number[]): number[];
  fromArray(array: number[], offset?: number): Matrix3;
  toArray(): number[];

  /**
   * Multiplies this matrix by m.
   */
  multiply(m: Matrix3): Matrix3;

  premultiply(m: Matrix3): Matrix3;

  /**
   * Sets this matrix to a x b.
   */
  multiplyMatrices(a: Matrix3, b: Matrix3): Matrix3;

  /**
   * @deprecated Use {@link Vector3.applyMatrix3 vector.applyMatrix3( matrix )} instead.
   */
  multiplyVector3(vector: Vector3): any;

  /**
   * @deprecated This method has been removed completely.
   */
  multiplyVector3Array(a: any): any;
  getInverse(matrix: Matrix4, throwOnDegenerate?: boolean): Matrix3;

  /**
   * @deprecated Use {@link Matrix3#toArray .toArray()} instead.
   */
  flattenToArrayOffset(array: number[], offset: number): number[];
}