index.js
function getDistance(p1, p2, props) {
  if (!props) {
    props = PROPS_XY;
  }
  var x = p2[props[0]] - p1[props[0]];
  var y = p2[props[1]] - p1[props[1]];

  return Math.sqrt((x * x) + (y * y));
}
function getDistance(p1, p2, props) {
  if (!props) {
    props = PROPS_XY;
  }
  var x = p2[props[0]] - p1[props[0]];
  var y = p2[props[1]] - p1[props[1]];

  return Math.sqrt((x * x) + (y * y));
}
function getDistance ( p1 , p2 , props ) { if ( ! props ) { props = PROPS_XY ; } var x = p2 [ props [ 0 ] ] - p1 [ props [ 0 ] ] ; var y = p2 [ props [ 1 ] ] - p1 [ props [ 1 ] ] ; return Math . sqrt ( ( x * x ) + ( y * y ) ) ; }
calculate the absolute distance between two points
@param {Object} p1 {x, y}
@param {Object} p2 {x, y}
@param {Array} [props] containing x and y keys
@return {Number} distance
calculate the absolute distance between two points