function _detectPointInCircle(point, radius, center) {

    var xp = point.x;
    var yp = point.y;

    var xc = center.x;
    var yc = center.y;

    var d = radius * radius;

    var isInside = Math.pow(xp - xc, 2) + Math.pow(yp - yc, 2) <= d;

    return isInside;
  }
/**
   * Detect if a point is inside a circle area.
   * @private
   */
Detect if a point is inside a circle area.
@private
Detect if a point is inside a circle area . @private
function _detectPointInCircle(point, radius, center) {
    var xp = point.x;
    var yp = point.y;
    var xc = center.x;
    var yc = center.y;
    var d = radius * radius;
    var isInside = Math.pow(xp - xc, 2) + Math.pow(yp - yc, 2) <= d;
    return isInside;
  }
function _detectPointInCircle ( point , radius , center ) { var xp = point . x ; var yp = point . y ; var xc = center . x ; var yc = center . y ; var d = radius * radius ; var isInside = Math . pow ( xp - xc , 2 ) + Math . pow ( yp - yc , 2 ) <= d ; return isInside ; }
Detect if a point is inside a circle area.
Detect if a point is inside a circle area .