code: function getShapeZero(x,y,options,modules){
  
    var EOL = '\r\n';
    var width = options.width;
    var height = options.height;
    var length = modules.length;
    var style = options.style;
    var xsize = width / (length + 2 * options.padding);
    var ysize = height / (length + 2 * options.padding);
    var px = (x * xsize + options.padding * xsize);
    var py = (y * ysize + options.padding * ysize);
  
    switch(options.style){
      case 'square':
        return '<rect x="' + px + '" y="' + py + '" width="' + xsize + '" height="' + ysize + '" style="fill:' + options.color + ';shape-rendering:crispEdges;"/>' + EOL;
      case 'circle':
        return '<rect rx="'+xsize+'" x="' + px + '" y="' + py + '" width="' + xsize + '" height="' + ysize + '" style="fill:' + options.color + ';shape-rendering:crispEdges;"/>' + EOL;
      case 'sharp-edge':
        return '<rect transform="rotate(45 '+(px+xsize/2)+' '+(py+ysize/2)+')" x="' + px + '" y="' + py + '" width="' + xsize + '" height="' + ysize + '" style="fill:' + options.color + ';shape-rendering:crispEdges;"/>' + EOL;
      case 'ninja':
        return '<g transform="translate('+px+','+py+') scale('+1+','+1+')"><g transform="" style="fill: rgb(255, 0, 0);"><path d="M0,14V0c0,0,9.15,4.38,14,0.55C14,0.55,14.24,14,0,14z"/></g></g>'
    }
  }
docs: Returns an SVG element for a box with no surrounding boxes