matrix-utilities

Tiny (516b gzipped), high performance utilities for performing 2/3D matrix calculations. Full unit test coverage, compatible with Node/CommonJS, AMD, and browser globals.

API

util = require 'matrix-utilities'

util.Identity() # returns new 3D identity matrix
util.multiply matrix1, matrix2 # returns matrix1×matrix2
util.flip matrix # flip a matrix along x=y
util.to2d matrix
util.to3d matrix

examples

util = require 'matrix-utilities'

# identity

matrix = util.Identity()
###
    #=>
    [
        [1, 0, 0, 0]
        [0, 1, 0, 0]
        [0, 0, 1, 0]
        [0, 0, 0, 1]
    ]
###

# to2d

util.to2d matrix
###
    #=>
    [
        [1, 0, 0]
        [0, 1, 0]
    ]
###

# flip

util.flip [
    [1, 2, 3]
    [4, 5, 6]
    [7, 8, 9]
]
###
    #=>
    [
        [1, 4, 7]
        [2, 5, 8]
        [3, 6, 9]
    ]
###

# multiply

one = [
    [1, 2, 3]
    [4, 5, 6]
    [7, 8, 9]
]

two = [
    [1, 2]
    [3, 4]
    [5, 6]
]

util.multiply one, two
###
    #=>
    [
        [22, 28]
        [49, 64]
        [76, 100]
    ]
###