/// <summary>
/// Creates a scene node from a stream
/// </summary>
/// <param name="_Owner"></param>
/// <param name="_Parent"></param>
/// <param name="_Reader"></param>
internal Node( Scene _Owner, Node _Parent, System.IO.BinaryReader _Reader )
{
m_Owner = _Owner;
// m_NodeType = _Reader.ReadInt32(); // Don't read back the node type as it has already been consumed by the parent
m_ID = _Reader.ReadInt32();
m_Owner.RegisterNodeID( this );
m_Name = _Reader.ReadString();
m_Parent = _Parent;
if ( _Parent != null )
m_Parent.AddChild( this );
// Read the matrix
m_Local2Parent.m[0,0] = _Reader.ReadSingle();
m_Local2Parent.m[0,1] = _Reader.ReadSingle();
m_Local2Parent.m[0,2] = _Reader.ReadSingle();
m_Local2Parent.m[0,3] = _Reader.ReadSingle();
m_Local2Parent.m[1,0] = _Reader.ReadSingle();
m_Local2Parent.m[1,1] = _Reader.ReadSingle();
m_Local2Parent.m[1,2] = _Reader.ReadSingle();
m_Local2Parent.m[1,3] = _Reader.ReadSingle();
m_Local2Parent.m[2,0] = _Reader.ReadSingle();
m_Local2Parent.m[2,1] = _Reader.ReadSingle();
m_Local2Parent.m[2,2] = _Reader.ReadSingle();
m_Local2Parent.m[2,3] = _Reader.ReadSingle();
m_Local2Parent.m[3,0] = _Reader.ReadSingle();
m_Local2Parent.m[3,1] = _Reader.ReadSingle();
m_Local2Parent.m[3,2] = _Reader.ReadSingle();
m_Local2Parent.m[3,3] = _Reader.ReadSingle();
// Read specific data
LoadSpecific( _Reader );
// Read children
int ChildrenCount = _Reader.ReadInt32();
for ( int ChildIndex=0; ChildIndex < ChildrenCount; ChildIndex++ )
{
NODE_TYPE ChildType = (NODE_TYPE) _Reader.ReadByte();
switch ( ChildType )
{
case NODE_TYPE.NODE:
new Node( _Owner, this, _Reader );
break;
case NODE_TYPE.MESH:
new Mesh( _Owner, this, _Reader );
break;
case NODE_TYPE.LIGHT:
new Light( _Owner, this, _Reader );
break;
case NODE_TYPE.CAMERA:
new Camera( _Owner, this, _Reader );
break;
}
}
}
protected Matrix4x4 m_PreviousLocal2World = Matrix4x4.Identity; // The object transform matrix from the previous frame
#endregion Fields
#region Constructors
/// <summary>
/// Creates a new scene node
/// </summary>
/// <param name="_Owner"></param>
/// <param name="_ID"></param>
/// <param name="_Name"></param>
/// <param name="_Parent"></param>
/// <param name="_Local2Parent"></param>
internal Node( Scene _Owner, int _ID, string _Name, Node _Parent, Matrix4x4 _Local2Parent )
{
m_Owner = _Owner;
m_ID = _ID;
m_Name = _Name;
m_Parent = _Parent;
m_Local2Parent = _Local2Parent;
// Append the node to its parent
if ( _Parent != null )
_Parent.AddChild( this );
}
public void AddChild( Node _Child )
{
m_Children.Add( _Child );
m_bStateDirty = true;
}
public void RemoveChild( Node _Child )
{
m_Children.Remove( _Child );
}
protected Node FindNode( Node _Node, string _Name, bool _bCaseSensitive )
{
if ( _bCaseSensitive ? _Node.Name == _Name : _Node.Name.ToLower() == _Name )
return _Node; // Found it !
foreach ( Node Child in _Node.Children )
{
Node Result = FindNode( Child, _Name, _bCaseSensitive );
if ( Result != null )
return Result;
}
return null;
}
protected Node FindNode( Node _Node, int _NodeID )
{
if ( _Node.ID == _NodeID )
return _Node;
foreach ( Node Child in _Node.Children )
{
Node Result = FindNode( Child, _NodeID );
if ( Result != null )
return Result;
}
return null;
}
/// <summary>
/// Registers the node's ID and associate it to the node so we can find nodes by ID later
/// </summary>
/// <param name="_Node"></param>
internal void RegisterNodeID( Node _Node )
{
m_ID2Node[_Node.ID] = _Node;
}
/// <summary>
/// Creates a new camera for the scene
/// </summary>
/// <param name="_Name"></param>
/// <param name="_Parent"></param>
/// <param name="_Local2Parent"></param>
/// <returns></returns>
public Camera CreateCamera( string _Name, Node _Parent, Matrix4x4 _Local2Parent )
{
Camera Result = new Camera( this, m_NodeIDCounter++, _Name, _Parent, _Local2Parent );
m_ID2Node[Result.ID] = Result;
m_Cameras.Add( Result );
return Result;
}
/// <summary>
/// Custom node finder
/// </summary>
/// <param name="_Node"></param>
/// <param name="_D"></param>
/// <returns></returns>
public Node FindNode( Node _Node, FindNodeDelegate _D )
{
if ( _D( _Node ) )
return _Node; // Found it !
foreach ( Node Child in _Node.Children )
{
Node Result = FindNode( Child, _D );
if ( Result != null )
return Result;
}
return null;
}
/// <summary>
/// Creates a scene from a stream
/// </summary>
/// <param name="_Reader"></param>
/// <param name="_TextureProvider"></param>
/// <returns></returns>
public void Load( System.IO.BinaryReader _Reader )
{
// Read back textures
ClearTextures();
int TexturesCount = _Reader.ReadInt32();
for ( int TextureIndex=0; TextureIndex < TexturesCount; TextureIndex++ )
{
Texture2D T = new Texture2D( this, _Reader );
m_Textures.Add( T );
m_URL2Texture.Add( T.URL, T );
m_ID2Texture.Add( T.ID, T );
}
m_TextureIDCounter = m_Textures.Count;
// Read back material parameters
ClearMaterialParameters();
int MaterialParametersCount = _Reader.ReadInt32();
for ( int MaterialParameterIndex=0; MaterialParameterIndex < MaterialParametersCount; MaterialParameterIndex++ )
{
MaterialParameters MP = new MaterialParameters( this, _Reader );
m_MaterialParameters.Add( MP );
m_ID2MaterialParameters.Add( MP.ID, MP );
}
m_MaterialParametersIDCounter = m_MaterialParameters.Count;
// Read back the nodes hierarchy
ClearNodes();
bool bHasRoot = _Reader.ReadBoolean();
if ( !bHasRoot )
return;
// Read back root type
Node.NODE_TYPE Type = (Node.NODE_TYPE) _Reader.ReadByte();
switch ( Type )
{
case Node.NODE_TYPE.NODE:
m_Root = new Node( this, null, _Reader );
break;
case Node.NODE_TYPE.MESH:
m_Root = new Mesh( this, null, _Reader );
m_Meshes.Add( m_Root as Mesh );
break;
case Node.NODE_TYPE.LIGHT:
m_Root = new Light( this, null, _Reader );
m_Lights.Add( m_Root as Light );
break;
case Node.NODE_TYPE.CAMERA:
m_Root = new Camera( this, null, _Reader );
m_Cameras.Add( m_Root as Camera );
break;
}
m_ID2Node[m_Root.ID] = m_Root;
// Propagate state once so matrices are up to date
m_Root.PropagateState();
}
/// <summary>
/// Creates a new node for the scene
/// </summary>
/// <param name="_Name"></param>
/// <param name="_Parent"></param>
/// <param name="_Local2Parent"></param>
/// <returns></returns>
public Node CreateNode( string _Name, Node _Parent, Matrix4x4 _Local2Parent )
{
Node Result = new Node( this, m_NodeIDCounter++, _Name, _Parent, _Local2Parent );
m_ID2Node[Result.ID] = Result;
if ( _Parent == null )
{ // New root ?
if ( m_Root != null )
throw new Exception( "You're providing a root (i.e. no parent node) whereas there is already one ! Did you forget to clear the nodes?" );
m_Root = Result; // Got ourselves a new root !
}
return Result;
}
/// <summary>
/// Creates a new mesh for the scene
/// </summary>
/// <param name="_Name"></param>
/// <param name="_Parent"></param>
/// <param name="_Local2Parent"></param>
/// <returns></returns>
public Mesh CreateMesh( string _Name, Node _Parent, Matrix4x4 _Local2Parent )
{
Mesh Result = new Mesh( this, m_NodeIDCounter++, _Name, _Parent, _Local2Parent );
m_ID2Node[Result.ID] = Result;
m_Meshes.Add( Result );
return Result;
}
/// <summary>
/// Creates a new light for the scene
/// </summary>
/// <param name="_Name"></param>
/// <param name="_Parent"></param>
/// <param name="_Local2Parent"></param>
/// <returns></returns>
public Light CreateLight( string _Name, Node _Parent, Matrix4x4 _Local2Parent )
{
Light Result = new Light( this, m_NodeIDCounter++, _Name, _Parent, _Local2Parent );
m_ID2Node[Result.ID] = Result;
m_Lights.Add( Result );
return Result;
}
internal Mesh( Scene _Owner, int _ID, string _Name, Node _Parent, Matrix4x4 _Local2Parent )
: base(_Owner, _ID, _Name, _Parent, _Local2Parent)
{
}
protected Mesh FindMesh( Node _Node, string _Name, bool _bCaseSensitive )
{
if ( _Node is Mesh && (_bCaseSensitive ? _Node.Name == _Name : _Node.Name.ToLower() == _Name) )
return _Node as Mesh; // Found it !
foreach ( Node Child in _Node.Children )
{
Mesh Result = FindMesh( Child, _Name, _bCaseSensitive );
if ( Result != null )
return Result;
}
return null;
}
internal Mesh( Scene _Owner, Node _Parent, System.IO.BinaryReader _Reader )
: base(_Owner, _Parent, _Reader)
{
}
/// <summary>
/// Clear the hierarchy of nodes
/// </summary>
public void ClearNodes()
{
if ( m_Root != null )
m_Root.Dispose();
m_Root = null;
m_ID2Node.Clear();
m_Meshes.Clear();
m_Lights.Clear();
m_Cameras.Clear();
m_NodeIDCounter = 0;
}
