function Extra_Graphics(){this._x=0;this._y=0;this._color="#0000ff";this._stroke=1;this._id_geometry=-1;this._printable=false;this._reference_element="";this._layer_name="";this._angle=0;this._optimized_drawing=true}Extra_Graphics.prototype.draw=function(a){};Extra_Graphics.prototype.clear=function(a){};Extra_Graphics.prototype.rotate=function(){};Extra_Graphics.prototype.rotate=function(){};Extra_Graphics.prototype.move=function(a,b){};Extra_Graphics.prototype.set_color=function(a){this._color=a};Extra_Graphics.prototype.get_color=function(){return this._color};Extra_Graphics.prototype.set_stroke=function(a){this._stroke=a};Extra_Graphics.prototype.get_stroke=function(){return this._stroke};Extra_Graphics.prototype.snap_point=function(a,b){};Extra_Graphics.prototype.to_string=function(){return""};