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attribNodeRegistry.h
00001 // Filename: attribNodeRegistry.h
00002 // Created by:  drose (07Jul07)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef ATTRIBNODEREGISTRY_H
00016 #define ATTRIBNODEREGISTRY_H
00017 
00018 #include "pandabase.h"
00019 #include "nodePath.h"
00020 #include "ordered_vector.h"
00021 #include "lightMutex.h"
00022 
00023 ////////////////////////////////////////////////////////////////////
00024 //       Class : AttribNodeRegistry
00025 // Description : This global object records NodePaths that are
00026 //               referenced by scene graph attribs, such as
00027 //               ClipPlaneAttribs and LightAttribs.
00028 //
00029 //               Its primary purpose is to unify attribs that are
00030 //               loaded in from bam files.  Attrib nodes are
00031 //               identified by name and type; when a bam file that
00032 //               contains references to some attrib nodes is loaded,
00033 //               those nodes are first looked up here in the
00034 //               AttribNodeRegistry.  If there is a match (by name and
00035 //               node type), the identified node is used instead of
00036 //               the node referenced within the bam file itself.
00037 ////////////////////////////////////////////////////////////////////
00038 class EXPCL_PANDA_PGRAPH AttribNodeRegistry {
00039 protected:
00040   AttribNodeRegistry();
00041 
00042 PUBLISHED:
00043   void add_node(const NodePath &attrib_node);
00044   bool remove_node(const NodePath &attrib_node);
00045   NodePath lookup_node(const NodePath &orig_node) const;
00046 
00047   int get_num_nodes() const;
00048   NodePath get_node(int n) const;
00049   MAKE_SEQ(get_nodes, get_num_nodes, get_node);
00050   TypeHandle get_node_type(int n) const;
00051   string get_node_name(int n) const;
00052 
00053   int find_node(const NodePath &attrib_node) const;
00054   int find_node(TypeHandle type, const string &name) const;
00055   void remove_node(int n);
00056   void clear();
00057 
00058   void output(ostream &out) const;
00059   void write(ostream &out) const;
00060 
00061   INLINE static AttribNodeRegistry *get_global_ptr();
00062 
00063 private:
00064   static void make_global_ptr();
00065 
00066   class Entry {
00067   public:
00068     INLINE Entry(const NodePath &node);
00069     INLINE Entry(TypeHandle type, const string &name);
00070     INLINE bool operator < (const Entry &other) const;
00071 
00072     TypeHandle _type;
00073     string _name;
00074     NodePath _node;
00075   };
00076 
00077   typedef ov_set<Entry> Entries;
00078   Entries _entries;
00079 
00080   LightMutex _lock;
00081 
00082   static AttribNodeRegistry * TVOLATILE _global_ptr;
00083 };
00084 
00085 #include "attribNodeRegistry.I"
00086 
00087 #endif
00088 
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