Matrix2

Functions for 2x2 matrices using 4-element arrays [m0, m1, m2, m3]. All matrices are stored in COLUMN-MAJOR order.

Array Layout

The array [n11, n21, n12, n22] represents the matrix:

[ n11, n12, 
  n21, n22 ]

---

Creation

// Create an identity matrix
var m = mat2_create(); 

// Create a specific matrix (input in ROW-MAJOR for readability)
var m_custom = mat2_create(
    1, 2,
    3, 4
);

---

Function Reference

Creation and Setting

Function	Description
mat2_create(n11?, n12?, n21?, n22?)	Creates a new matrix (default: identity).
mat2_set(m, n11, n12, n21, n22)	Sets the matrix elements.
mat2_identity(m)	Sets the matrix to identity.

Utilities

Function	Description
mat2_from_array(m, array, offset?)	Sets the matrix from an array (Column-Major).