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fltLightSourceDefinition.h
00001 // Filename: fltLightSourceDefinition.h
00002 // Created by:  drose (26Aug00)
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 FLTLIGHTSOURCEDEFINITION_H
00016 #define FLTLIGHTSOURCEDEFINITION_H
00017 
00018 #include "pandatoolbase.h"
00019 
00020 #include "fltRecord.h"
00021 
00022 #include "luse.h"
00023 
00024 ////////////////////////////////////////////////////////////////////
00025 //       Class : FltLightSourceDefinition
00026 // Description : Represents a single entry in the light source
00027 //               palette.  This completely defines the color, etc. of
00028 //               a single light source, which may be referenced later
00029 //               by a FltLightSource bead in the hierarchy.
00030 ////////////////////////////////////////////////////////////////////
00031 class FltLightSourceDefinition : public FltRecord {
00032 public:
00033   FltLightSourceDefinition(FltHeader *header);
00034 
00035   enum LightType {
00036     LT_infinite = 0,
00037     LT_local    = 1,
00038     LT_spot     = 2
00039   };
00040 
00041   int _light_index;
00042   string _light_name;
00043   LColor _ambient;
00044   LColor _diffuse;
00045   LColor _specular;
00046   LightType _light_type;
00047   PN_stdfloat _exponential_dropoff;
00048   PN_stdfloat _cutoff_angle;  // in degrees
00049 
00050   // yaw and pitch only for modeling lights, which are positioned at
00051   // the eyepoint.
00052   PN_stdfloat _yaw;
00053   PN_stdfloat _pitch;
00054 
00055   PN_stdfloat _constant_coefficient;
00056   PN_stdfloat _linear_coefficient;
00057   PN_stdfloat _quadratic_coefficient;
00058   bool _modeling_light;
00059 
00060 protected:
00061   virtual bool extract_record(FltRecordReader &reader);
00062   virtual bool build_record(FltRecordWriter &writer) const;
00063 
00064 public:
00065   virtual TypeHandle get_type() const {
00066     return get_class_type();
00067   }
00068   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00069   static TypeHandle get_class_type() {
00070     return _type_handle;
00071   }
00072   static void init_type() {
00073     FltRecord::init_type();
00074     register_type(_type_handle, "FltLightSourceDefinition",
00075                   FltRecord::get_class_type());
00076   }
00077 
00078 private:
00079   static TypeHandle _type_handle;
00080 
00081   friend class FltHeader;
00082 };
00083 
00084 #endif
00085 
00086 
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