code: function(ctxt, hRatio, vRatio) {
        var wires = this.layer.wires;
        var n = wires.length,i,wire;
        for(i = 0 ; i < n ; i++) {
           wire = wires[i];
           var pos1 = wire.terminal1.getXY(), 
               pos2 = wire.terminal2.getXY();
  
           // Stroked line
           // TODO:
           ctxt.beginPath();
           ctxt.moveTo(pos1[0]*hRatio,pos1[1]*vRatio);
           ctxt.lineTo(pos2[0]*hRatio,pos2[1]*vRatio);
           ctxt.closePath();
           ctxt.stroke();
        }
        
     }
docs: Subroutine to draw the wires
  @method drawWires