/// <summary>
/// Called when this block is placed in the world
/// </summary>
public override bool BlockPlaced(World world, Vector3 position, Vector3 blockClicked, byte facing, Entities.Entity placedBy)
{
// Get facing
facing = MathHelper.DirectionByRotationFlat(placedBy);
Vector3 secondHalf = position.Clone();
byte occupied = 0x4;
switch ((Directions)facing)
{
case Directions.North:
facing = (byte)Bed.North;
secondHalf.X--;
break;
case Directions.East:
facing = (byte)Bed.East;
secondHalf.Z--;
break;
case Directions.West:
facing = (byte)Bed.West;
secondHalf.Z++;
break;
case Directions.South:
facing = (byte)Bed.South;
secondHalf.X++;
break;
}
this.Metadata = facing;
Block other = world.GetBlock(secondHalf);
if (!(other is AirBlock))
return false;
other = new BedBlock();
other.Metadata = (byte)(facing | 0x08);
world.SetBlock(secondHalf, other);
return true;
}
/// <summary>
/// Initializes a new instance of the <see cref="Posit"/> class.
/// </summary>
///
/// <param name="model">Array of vectors containing coordinates of four real model's point.</param>
/// <param name="focalLength">Effective focal length of the camera used to capture the model.</param>
///
/// <exception cref="ArgumentException">The model must have 4 points.</exception>
///
public CoplanarPosit( Vector3[] model, float focalLength )
{
if ( model.Length != 4 )
{
throw new ArgumentException( "The model must have 4 points." );
}
this.focalLength = focalLength;
modelPoints = (Vector3[]) model.Clone( );
// compute model vectors
modelVectors = Matrix3x3.CreateFromRows(
model[1] - model[0],
model[2] - model[0],
model[3] - model[0] );
// compute pseudo inverse of the model matrix
Matrix3x3 u, v;
Vector3 e;
modelVectors.SVD( out u, out e, out v );
modelPseudoInverse = v * Matrix3x3.CreateDiagonal( e.Inverse( ) ) * u.Transpose( );
// computer unit vector normal to the model
modelNormal = v.GetColumn( e.MinIndex );
}
/// <summary>
/// Initializes a new instance of the <see cref="Posit"/> class.
/// </summary>
///
/// <param name="model">Array of vectors containing coordinates of four real model's point (points
/// must not be on the same plane).</param>
/// <param name="focalLength">Effective focal length of the camera used to capture the model.</param>
///
/// <exception cref="ArgumentException">The model must have 4 points.</exception>
///
public Posit( Vector3[] model, float focalLength )
{
if ( model.Length != 4 )
{
throw new ArgumentException( "The model must have 4 points." );
}
this.focalLength = focalLength;
modelPoints = (Vector3[]) model.Clone( );
// compute model vectors
modelVectors = Matrix3x3.CreateFromRows(
model[1] - model[0],
model[2] - model[0],
model[3] - model[0] );
// compute pseudo inverse matrix
modelPseudoInverse = modelVectors.PseudoInverse( );
}