/// <summary>
/// Reads a <c>UpdatePosition</c> type PositionUpdate message.
/// </summary>
/// <param name="buffer">The byte array containing data.</param>
/// <param name="length">The length of the message.</param>
/// <returns>The PositionUpdate.</returns>
public static PositionUpdate ReadUpdatePosition(byte[] buffer, int length)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (buffer.Length < length)
{
throw new ArgumentOutOfRangeException("buffer", buffer, "The buffer is not long enough to contain a message of the specified length.");
}
if (length < 16)
{
return(null);
}
float x = MessageProcessor.ReadSingle(buffer, 0);
float y = MessageProcessor.ReadSingle(buffer, 4);
Vector2 coordinate = new Vector2(x, y);
float rotation = MessageProcessor.ReadSingle(buffer, 8);
int id = MessageProcessor.ReadInt32(buffer, 12);
PositionUpdate update = new PositionUpdate(UpdateType.UpdatePosition, coordinate, rotation, id);
if (id > 200 || id < 0)
{
throw new ArgumentOutOfRangeException("Received message is not sane: " + update);
}
return(update);
}
/// <summary>
/// Reads an <see cref="ARViewUpdate"/> message from the given byte array.
/// </summary>
/// <param name="bytes">The byte array to read from.</param>
/// <param name="length">The maximum amount of bytes to read.</param>
/// <returns>The created <see cref="ARViewUpdate"/>.</returns>
public static ARViewUpdate ReadARViewUpdate(byte[] bytes, int length)
{
Assert.IsNotNull(bytes);
Assert.IsFalse(length < 28, "ARViewUpdate length needs to be at least 28");
Assert.IsFalse(bytes.Length < length, "byte array length is insufficient");
int id = MessageProcessor.ReadInt32(bytes, 0);
Vector3 position = new Vector3(
MessageProcessor.ReadSingle(bytes, 4),
MessageProcessor.ReadSingle(bytes, 8),
MessageProcessor.ReadSingle(bytes, 12));
Vector3 rotation = new Vector3(
MessageProcessor.ReadSingle(bytes, 16),
MessageProcessor.ReadSingle(bytes, 20),
MessageProcessor.ReadSingle(bytes, 24));
return(new ARViewUpdate(id, position, rotation));
}
/// <summary>
/// Reads a <c>UpdateRotation</c> type RotationUpdate message.
/// </summary>
/// <param name="buffer">The byte array containing data.</param>
/// <param name="length">The length of the message.</param>
/// <returns>The RotationUpdate.</returns>
public static RotationUpdate ReadUpdateRotation(byte[] buffer, int length)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (buffer.Length < length)
{
throw new ArgumentOutOfRangeException("buffer", buffer, "The buffer is not long enough to contain a message of the specified length.");
}
if (length < 8)
{
return(null);
}
int id = MessageProcessor.ReadInt32(buffer, 0);
float rotation = MessageProcessor.ReadSingle(buffer, 4);
return(new RotationUpdate(UpdateType.UpdateRotation, rotation, id));
}
/// <summary>
/// Reads a <c>UpdateRotation</c> type RotationUpdate message.
/// </summary>
/// <param name="buffer">The byte array containing data.</param>
/// <param name="length">The length of the message.</param>
/// <returns>The RotationUpdate.</returns>
public static LevelUpdate ReadUpdateLevel(byte[] buffer, int length)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (buffer.Length < length)
{
throw new ArgumentOutOfRangeException("buffer", buffer, "The buffer is not long enough to contain a message of the specified length.");
}
if (length < 16)
{
return(null);
}
int index = MessageProcessor.ReadInt32(buffer, 0);
int time = MessageProcessor.ReadInt32(buffer, 4);
float width = MessageProcessor.ReadSingle(buffer, 8);
float height = MessageProcessor.ReadSingle(buffer, 12);
return(new LevelUpdate(index, new Vector2(width, height), time));
}
