public string ListDevices(DeviceState state)
{
var sb = new StringBuilder();
foreach (var device in state.DeviceManager.AllDevices())
{
sb.Append(Environment.NewLine).Append(device.Category).Append(" ").Append(device.Id);
}
if (sb.Length > 0)
{
sb.Insert(0, "Type ID");
return(sb.ToString());
}
return("No devices are connected.");
}
public string Parse(string command, ref DeviceState state)
{
var strings = command.Split(" ");
switch (strings[0].ToLower())
{
case "help":
return(HelpText());
case "list":
return(ListDevices(state));
case "select":
return(SelectDevice(strings[1], ref state));
}
return("Command not recognised, type 'help' to see all commands.");
}
private string SelectDevice(string id, ref DeviceState state)
{
var device = state.DeviceManager.GetDevice(id);
if (device != null)
{
state.SelectedDevice = device;
switch (device)
{
case ICamera cam:
state.Parser = new CameraCommandParser();
break;
}
return($"Selected {device.Id}.");
}
return($"Device {id} not found.");
}
public override string Parse(string command, ref DeviceState state)
{
var cam = state.SelectedDevice as ICamera;
if (cam == null)
{
throw new ArgumentException("Selected Device is null or not a camera.");
}
var err = base.Parse(command, ref state);
double val = 0;
var strings = command.Split(" ");
try
{
// If base has handled the command, all of these should fall through.
// If it hasn't, then we will get the "Not Recognised" message
switch (strings[0].ToLower())
{
case "pan":
if (TryParse(strings[1], out val, out err))
{
return(Pan(cam, val));
}
break;
case "pitch":
if (TryParse(strings[1], out val, out err))
{
return(Pitch(cam, val));
}
break;
case "tilt":
if (TryParse(strings[1], out val, out err))
{
return(Tilt(cam, val));
}
break;
case "zoom":
if (TryParse(strings[1], out val, out err))
{
return(Zoom(cam, val));
}
break;
case "lookat":
if (TryParse(strings.Skip(1).ToArray(), out var values, out err))
{
return(LookAt(cam, values));
}
break;
}
}
catch (NotSupportedException e)
{
err = "Operation is not supported on this camera.";
}
return(err);
}
