/// <summary>
/// Changes layers of a given intersector
/// </summary>
/// <param name="intersector"></param>
/// <param name="layers"></param>
public void ChangeLayers( IRay3Intersector intersector, ulong layers )
{
int index = Find( intersector );
if ( index != -1 )
{
( ( IRayLayerIntersector )m_Intersectors[ index ] ).Layers = layers;
}
}
/// <summary>
/// Adds an object that can be intersected to the raycaster
/// </summary>
/// <param name="intersector">Intersectable object</param>
public IRayLayerIntersector AddIntersector( IRay3Intersector intersector )
{
if ( intersector is IRayLayerIntersector )
{
m_Intersectors.Add( intersector );
return ( IRayLayerIntersector )intersector;
}
return AddIntersector( ulong.MaxValue, intersector );
}
/// <summary>
/// Initialises this ray intersector
/// </summary>
/// <param name="intersector">Base intersector</param>
/// <param name="layers">Initial layers</param>
public Ray3LayerIntersector( IRay3Intersector intersector, ulong layers )
{
if ( intersector == null )
{
throw new ArgumentNullException( "intersector", "Base intersector cannot be null" );
}
m_Intersector = intersector;
m_Layers = layers;
}
/// <summary>
/// Adds an intersectable geometry object to the ray caster
/// </summary>
public IRayLayerIntersector AddIntersector( ulong layers, IRay3Intersector intersector )
{
if ( intersector is IRayLayerIntersector )
{
throw new ArgumentException( "Intersector already supports layers", "intersector" );
}
Ray3LayerIntersector layerIntersector = new Ray3LayerIntersector( intersector, layers );
m_Intersectors.Add( layerIntersector );
return layerIntersector;
}
/// <summary>
/// Finds the index of a given intersector object
/// </summary>
/// <param name="intersector">Intersector to find</param>
/// <returns>Returns the index of the intersector, or -1 if it can't be found</returns>
private int Find( IRay3Intersector intersector )
{
for ( int index = 0; index < m_Intersectors.Count; ++index )
{
if ( m_Intersectors[ index ] == intersector )
{
return index;
}
Ray3LayerIntersector layerIntersector = m_Intersectors[ index ] as Ray3LayerIntersector;
if ( layerIntersector != null && layerIntersector.BaseIntersector == intersector )
{
return index;
}
}
return -1;
}
/// <summary>
/// Removes an intersector
/// </summary>
/// <param name="intersector">Intersector to remove</param>
public void RemoveIntersector( IRay3Intersector intersector )
{
int index = Find( intersector );
if ( index != -1 )
{
m_Intersectors.RemoveAt( index );
}
}
