Panda3D
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00001 // Filename: animChannelBase.h 00002 // Created by: drose (19Feb99) 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 ANIMCHANNELBASE_H 00016 #define ANIMCHANNELBASE_H 00017 00018 #include "pandabase.h" 00019 00020 #include "animGroup.h" 00021 #include "animControl.h" 00022 00023 #include "pointerTo.h" 00024 00025 //////////////////////////////////////////////////////////////////// 00026 // Class : AnimChannelBase 00027 // Description : Parent class for all animation channels. An 00028 // AnimChannel is an arbitrary function that changes 00029 // over time (actually, over frames), usually defined by 00030 // a table read from an egg file (but possibly computed 00031 // or generated in any other way). 00032 //////////////////////////////////////////////////////////////////// 00033 class EXPCL_PANDA_CHAN AnimChannelBase : public AnimGroup { 00034 protected: 00035 // The default constructor is protected: don't try to create an 00036 // AnimChannel without a parent. To create an AnimChannel hierarchy, 00037 // you must first create an AnimBundle, and use that to create any 00038 // subsequent children. 00039 INLINE AnimChannelBase(const string &name = ""); 00040 INLINE AnimChannelBase(AnimGroup *parent, const AnimChannelBase ©); 00041 00042 public: 00043 INLINE AnimChannelBase(AnimGroup *parent, const string &name); 00044 00045 virtual bool has_changed(int last_frame, double last_frac, 00046 int this_frame, double this_frac); 00047 00048 virtual TypeHandle get_value_type() const=0; 00049 00050 protected: 00051 00052 int _last_frame; 00053 00054 public: 00055 virtual void write_datagram(BamWriter* manager, Datagram &me); 00056 00057 protected: 00058 void fillin(DatagramIterator& scan, BamReader* manager); 00059 00060 PUBLISHED: 00061 virtual TypeHandle get_type() const { 00062 return get_class_type(); 00063 } 00064 00065 public: 00066 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00067 static TypeHandle get_class_type() { 00068 return _type_handle; 00069 } 00070 static void init_type() { 00071 AnimGroup::init_type(); 00072 register_type(_type_handle, "AnimChannelBase", 00073 AnimGroup::get_class_type()); 00074 } 00075 00076 private: 00077 static TypeHandle _type_handle; 00078 }; 00079 00080 #include "animChannelBase.I" 00081 00082 #endif