void setZoom(string command)
{
switch (command)
{
case "50x":
zoom.SetZoom(0.5f);
break;
case "100x":
zoom.SetZoom(1f);
break;
case "150x":
zoom.SetZoom(1.5f);
break;
case "200x":
zoom.SetZoom(2f);
break;
case "400x":
zoom.SetZoom(4f);
break;
default:
break;
}
}