BriSeven

function decomposeMatrix(m) {
	var t,r,s,k,E,F,G,H,Q,R,sx,sy,a1,a2,theta,phi,sqrt=Math.sqrt,atan2=Math.atan2;
	// http://math.stackexchange.com/questions/861674/decompose-a-2d-arbitrary-transform-into-only-scaling-and-rotation
	// 
	// It works wonderfully! Thanks. 
	// The input matrix is transposed though, 
	// so let me spell the solution out. 
	

	E=(m[0]+m[3])/2

tunght13488

/*
 * http://en.wikipedia.org/wiki/B%C3%A9zier_curve
 * http://www.malczak.linuxpl.com/blog/quadratic-bezier-curve-length/g
 */

function Point(x, y) {
    this.x = x;
    this.y = y;
}

skeggse

var net = require('net');
var util = require('util');
var Writable = require('stream').Writable;

/**
 * Pretends to consume the data written to it. In reality, it just eats data
 * really slowly.
 *
 * @constructor
 * @extends Writable

fwextensions

/*
This code takes a 2D transformation matrix described as a one-dimensional array 
(in column order, top to bottom and left to right) and decomposes it using the dojo
matrix library.  This input matrix should produce a 45-deg X skew:

  1 1 0
  0 1 0 
  0 0 1

The output of decompose() looks like this: