ruthenium

// thx tomy! http://www5.airnet.ne.jp/tomy/cpro/sslib12.htm

function cartesian2polar(x,y,z) {
    var obj = new Object;
    obj.r = Math.sqrt( x*x + y*y + z*z );
    
    if (x != 0.0)
        obj.phi = Math.atan2( y, x );
    else {
        if (y < 0.0)

ruthenium

function polarToCartesian(radius,radian){
    return {
        x:radius*Math.cos(radian),
        y:radius*Math.sin(radian)
    }
}

ruthenium

function cartesianToPolar(x,y){
    return {
        radius: Math.sqrt( Math.pow(x, 2) + Math.pow(y, 2) ),
        alpha: Math.atan2(y, x)
    }
}

ruthenium

/**
 * Coordinates Transformations
 *
 * http://stackoverflow.com/questions/5736398/how-to-calculate-the-svg-path-for-an-arc-of-a-circle
 *
 * @param centerX
 * @param centerY
 * @param radius
 * @param angleInDegrees
 * @returns {string}

ruthenium

# -*- coding: utf8 -*-
# this is from django.utils.module_loading

from importlib import import_module

def import_string(dotted_path):
    """
    Import a dotted module path and return the attribute/class designated by the
    last name in the path. Raise ImportError if the import failed.
    """

ruthenium

(function(){
  function addLink(target) {
    var div = document.createElement('div');
    var a = document.createElement('a');
    a.setAttribute('href', '#');
    a.textContent = 'No media in post';
    a.addEventListener('click', function(e){
      if (target.style.display == "none") {
        target.removeAttribute('style');
      } else {