text: var tools = {};
  module.exports = function (){
    return tools;
  };
  
  tools.distanceToBorder = function ( rect, dx, dy ){
    var width = rect.width(),
      height = rect.height();
    
    var innerDistance,
      m_link = Math.abs(dy / dx),
      m_rect = height / width;
    
    if ( m_link <= m_rect ) {
      var timesX = dx / (width / 2),
        rectY = dy / timesX;
      innerDistance = Math.sqrt(Math.pow(width / 2, 2) + Math.pow(rectY, 2));
    } else {
      var timesY = dy / (height / 2),
        rectX = dx / timesY;
      innerDistance = Math.sqrt(Math.pow(height / 2, 2) + Math.pow(rectX, 2));
    }
    
    return innerDistance;
  };
  