Panda3D
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00001 // Filename: animChannelScalarDynamic.h 00002 // Created by: drose (20Oct03) 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 ANIMCHANNELSCALARDYNAMIC_H 00016 #define ANIMCHANNELSCALARDYNAMIC_H 00017 00018 #include "pandabase.h" 00019 00020 #include "animChannel.h" 00021 00022 class PandaNode; 00023 class TransformState; 00024 00025 //////////////////////////////////////////////////////////////////// 00026 // Class : AnimChannelScalarDynamic 00027 // Description : An animation channel that accepts a scalar each frame 00028 // from some dynamic input provided by code. 00029 // 00030 // This object operates in two modes: in explicit mode, 00031 // the programmer should call set_value() each frame to 00032 // indicate the new value; in implicit mode, the 00033 // programmer should call set_value_node() to indicate 00034 // the node whose X component will be copied to the 00035 // scalar each frame. 00036 //////////////////////////////////////////////////////////////////// 00037 class EXPCL_PANDA_CHAN AnimChannelScalarDynamic : public AnimChannelScalar { 00038 protected: 00039 AnimChannelScalarDynamic(); 00040 AnimChannelScalarDynamic(AnimGroup *parent, const AnimChannelScalarDynamic ©); 00041 00042 public: 00043 AnimChannelScalarDynamic(const string &name); 00044 00045 virtual bool has_changed(int last_frame, double last_frac, 00046 int this_frame, double this_frac); 00047 virtual void get_value(int frame, PN_stdfloat &value); 00048 00049 PUBLISHED: 00050 void set_value(PN_stdfloat value); 00051 void set_value_node(PandaNode *node); 00052 00053 protected: 00054 virtual AnimGroup *make_copy(AnimGroup *parent) const; 00055 00056 private: 00057 // This is filled in only if we are using the set_value_node() 00058 // interface to get an implicit value from the transform on the 00059 // indicated node each frame. 00060 PT(PandaNode) _value_node; 00061 CPT(TransformState) _value; 00062 CPT(TransformState) _last_value; 00063 00064 // This is used only if we are using the explicit set_value() 00065 // interface. 00066 bool _value_changed; 00067 PN_stdfloat _float_value; 00068 00069 public: 00070 static void register_with_read_factory(); 00071 virtual void write_datagram(BamWriter *manager, Datagram &dg); 00072 virtual int complete_pointers(TypedWritable **plist, BamReader *manager); 00073 void fillin(DatagramIterator &scan, BamReader *manager); 00074 00075 static TypedWritable *make_AnimChannelScalarDynamic(const FactoryParams ¶ms); 00076 00077 public: 00078 virtual TypeHandle get_type() const { 00079 return get_class_type(); 00080 } 00081 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00082 static TypeHandle get_class_type() { 00083 return _type_handle; 00084 } 00085 static void init_type() { 00086 AnimChannelScalar::init_type(); 00087 register_type(_type_handle, "AnimChannelScalarDynamic", 00088 AnimChannelScalar::get_class_type()); 00089 } 00090 00091 private: 00092 static TypeHandle _type_handle; 00093 }; 00094 00095 #include "animChannelScalarDynamic.I" 00096 00097 #endif