Panda3D
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modelNode.h
00001 // Filename: modelNode.h
00002 // Created by:  drose (16Mar02)
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 MODELNODE_H
00016 #define MODELNODE_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "pandaNode.h"
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 //       Class : ModelNode
00024 // Description : This node is placed at key points within the scene
00025 //               graph to indicate the roots of "models": subtrees
00026 //               that are conceptually to be treated as a single unit,
00027 //               like a car or a room, for instance.  It doesn't
00028 //               affect rendering or any other operations; it's
00029 //               primarily useful as a high-level model indication.
00030 //
00031 //               ModelNodes are created in response to a <Model> { 1 }
00032 //               flag within an egg file.
00033 ////////////////////////////////////////////////////////////////////
00034 class EXPCL_PANDA_PGRAPH ModelNode : public PandaNode {
00035 PUBLISHED:
00036   INLINE ModelNode(const string &name);
00037 
00038 protected:
00039   INLINE ModelNode(const ModelNode &copy);
00040 
00041 public:
00042   virtual PandaNode *make_copy() const;
00043 
00044   virtual PandaNode *combine_with(PandaNode *other); 
00045   virtual bool safe_to_flatten() const;
00046   virtual bool safe_to_flatten_below() const;
00047   virtual bool safe_to_transform() const;
00048   virtual bool safe_to_modify_transform() const;
00049   virtual bool safe_to_combine() const;
00050   virtual bool preserve_name() const;
00051   virtual int get_unsafe_to_apply_attribs() const;
00052 
00053 PUBLISHED:
00054   enum PreserveTransform {
00055     PT_none,
00056     PT_local,
00057     PT_net,
00058     PT_drop_node,
00059     PT_no_touch,
00060   };
00061 
00062   INLINE void set_preserve_transform(PreserveTransform preserve_transform);
00063   INLINE PreserveTransform get_preserve_transform() const;
00064 
00065   INLINE void set_preserve_attributes(int attrib_mask);
00066   INLINE int get_preserve_attributes() const;
00067 
00068   void set_transform_limit(PN_stdfloat limit) { _transform_limit = limit; };
00069 
00070 private:
00071   PreserveTransform _preserve_transform;
00072   int _preserve_attributes;
00073 
00074 public:
00075   static void register_with_read_factory();
00076   virtual void write_datagram(BamWriter *manager, Datagram &dg);
00077 
00078 protected:
00079   static TypedWritable *make_from_bam(const FactoryParams &params);
00080   void fillin(DatagramIterator &scan, BamReader *manager);
00081 
00082   virtual void transform_changed();
00083   void test_transform(const TransformState *ts) const;
00084 
00085   PN_stdfloat _transform_limit;
00086 
00087 
00088 
00089 public:
00090   static TypeHandle get_class_type() {
00091     return _type_handle;
00092   }
00093   static void init_type() {
00094     PandaNode::init_type();
00095     register_type(_type_handle, "ModelNode",
00096                   PandaNode::get_class_type());
00097   }
00098   virtual TypeHandle get_type() const {
00099     return get_class_type();
00100   }
00101   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00102 
00103 private:
00104   static TypeHandle _type_handle;
00105 };
00106 
00107 #include "modelNode.I"
00108 
00109 #endif
00110 
00111 
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