/// <summary>
/// Sends the drawing event data to all users connected to the room.
/// </summary>
public static async Task AddDrawLineEvent(DrawLineEvent ev, string room)
{
// TODO: probably easier to just enqueue the event, then redraw later, locking the image data to avoid race conditions
var roomData = Room(room);
var path = roomData.Path;
path.MoveTo(ev.From.X, ev.From.Y);
path.LineTo(ev.To.X, ev.To.Y);
RedrawRoomImage(roomData);
foreach (var connectionId in _roomToConnections[room])
{
await Connection(connectionId).DrawEvents.Writer.WriteAsync(ev);
}
}
/// <summary>
/// A method called by a client when it wants to send us a drawing event.
/// </summary>
public async Task SendDrawLine(DrawLineEvent ev)
{
var room = ConnectionRoom;
await AddDrawLineEvent(ev, room);
}
