MathJS

Javascript Math Helper library

I began writing this library to collect functions I would use in my game development experiments in JS.

There are already good libraries out there for some of the functionality I wanted, but sometimes they are different from what I expected.

This is also a very good exercise for me to refresh this concepts fromt time to time.

I hope that with feedback and more people using the lib, it will look more and more feature complete.

What we have so far

• Vector2D
• Vector3D
• Vector4D
• Matrix22
• Matrix33
• Matrix44
• Quaternion
• TestSuite (used for decorated HTML testing generation)

How to use it

Simply include the "mathjs.js" file in your projects.

<script type="text/javascript" src="mathjs.js"></script>

Every object is included in the MW namespace.

var mtx33 = new MW.Matrix33();

or even shorter:

var mtx33 = mw.m33()

Both MW and mw are equivalent namespaces

Methods express their will with a prefix, like get or set. Where omitted, the function will modify the current object like in matrix inversion. For example

var mtx33 = new MW.Matrix33(); mtx33.fromEulerAnglesXYZ(0.0, 0.0, Math.PI);

Modifies the mtx33 object setting it to a rotation matrix based on the Euler angles for the X,Y,Z axis.

In a process to simplify the objects layout, now all the methods modify the current matrix. Also to allow chaining, methods now return this so you can do:

var mtx22 = MW.m22().identity().scalarMultiply(x).inverse();

ToDo

• Include dot and cross product in the Vector objects
• Complete Quaternion class implementation
• Introduce "Complex" object type
• Ray, Plane, and intersection functions
• Have some fun with canvas tests :)
• Include 2D geometry helpers
• Add 3D Geometry (Plane, Sphere, Cube at least)
• Add AABB and OOBB in 2D and 3D
• Evaluate if we want to include FFT? DCT?
• Evaluate inclusion of integration + mean
• Statistical functions?