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fltBead.h
00001 // Filename: fltBead.h
00002 // Created by:  drose (24Aug00)
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 FLTBEAD_H
00016 #define FLTBEAD_H
00017 
00018 #include "pandatoolbase.h"
00019 
00020 #include "fltRecord.h"
00021 #include "fltTransformRecord.h"
00022 
00023 #include "luse.h"
00024 
00025 ////////////////////////////////////////////////////////////////////
00026 //       Class : FltBead
00027 // Description : A base class for any of a broad family of flt records
00028 //               that represent particular beads in the hierarchy.
00029 //               These are things like group beads and object beads,
00030 //               as opposed to things like push and pop or comment
00031 //               records.
00032 ////////////////////////////////////////////////////////////////////
00033 class FltBead : public FltRecord {
00034 public:
00035   FltBead(FltHeader *header);
00036 
00037   bool has_transform() const;
00038   const LMatrix4d &get_transform() const;
00039   void set_transform(const LMatrix4d &mat);
00040   void clear_transform();
00041 
00042   int get_num_transform_steps() const;
00043   FltTransformRecord *get_transform_step(int n);
00044   const FltTransformRecord *get_transform_step(int n) const;
00045   void add_transform_step(FltTransformRecord *record);
00046 
00047   int get_replicate_count() const;
00048   void set_replicate_count(int count);
00049 
00050 protected:
00051   virtual bool extract_record(FltRecordReader &reader);
00052   virtual bool extract_ancillary(FltRecordReader &reader);
00053 
00054   virtual bool build_record(FltRecordWriter &writer) const;
00055   virtual FltError write_ancillary(FltRecordWriter &writer) const;
00056 
00057 private:
00058   bool extract_transform_matrix(FltRecordReader &reader);
00059   bool extract_replicate_count(FltRecordReader &reader);
00060 
00061   FltError write_transform(FltRecordWriter &writer) const;
00062   FltError write_replicate_count(FltRecordWriter &writer) const;
00063 
00064 private:
00065   bool _has_transform;
00066   LMatrix4d _transform;
00067 
00068   typedef pvector<PT(FltTransformRecord)> Transforms;
00069   Transforms _transform_steps;
00070 
00071   int _replicate_count;
00072 
00073 public:
00074   virtual TypeHandle get_type() const {
00075     return get_class_type();
00076   }
00077   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00078   static TypeHandle get_class_type() {
00079     return _type_handle;
00080   }
00081   static void init_type() {
00082     FltRecord::init_type();
00083     register_type(_type_handle, "FltBead",
00084                   FltRecord::get_class_type());
00085   }
00086 
00087 private:
00088   static TypeHandle _type_handle;
00089 };
00090 
00091 #endif
00092 
00093 
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