import { ICloneable, IEquatable } from '@chemistry/common';
import { Vec3 } from './vec3.js';
/**
 * Simple Class to work with special type of matrix.
 * | x1 x2  x3  x4 |
 * | x5 x6  x7  x8 |
 * | x8 x10 x11 x12|
 * | 0  0   0   1  |
 */
export declare class Matrix3x4 implements ICloneable<Matrix3x4>, IEquatable<Matrix3x4> {
    static add(matrix1: Matrix3x4, matrix2: Matrix3x4): Matrix3x4;
    static sub(matrix1: Matrix3x4, matrix2: Matrix3x4): Matrix3x4;
    static inverse(matrix: Matrix3x4): Matrix3x4;
    static isE(matrix: Matrix3x4): boolean;
    static equals(matrix1: Matrix3x4, matrix2: Matrix3x4): boolean;
    protected elements: number[];
    constructor(elements?: number[]);
    /**
     * Set value to specified element of the matrix
     */
    set(i: number, j: number, val: number): void;
    /**
     * return specified element of the matrix
     * @param  {Number} i row
     * @param  {Number} j column
     * @return {Number}
     */
    get(i: number, j: number): number;
    add(matrix: Matrix3x4): Matrix3x4;
    sub(matrix: Matrix3x4): Matrix3x4;
    translate(v: Vec3): Matrix3x4;
    scale(mult: number): Matrix3x4;
    project(mult: Vec3): Vec3;
    multiply(mult: Matrix3x4): Matrix3x4;
    inverse(): Matrix3x4;
    isE(): boolean;
    equals(matrix: Matrix3x4): boolean;
    clone(): Matrix3x4;
    toString(): string;
    /**
     * Return transformation matrix as symetry code (common in Crystallography)
     * e.g. 1-x,1-y,1-z
     */
    toSymetryCode(): string;
}
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