Panda3D
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00001 // Filename: lightAttrib.h 00002 // Created by: drose (26Mar02) 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 LIGHTATTRIB_H 00016 #define LIGHTATTRIB_H 00017 00018 #include "pandabase.h" 00019 00020 #include "light.h" 00021 #include "renderAttrib.h" 00022 #include "nodePath.h" 00023 #include "ordered_vector.h" 00024 #include "pmap.h" 00025 00026 //////////////////////////////////////////////////////////////////// 00027 // Class : LightAttrib 00028 // Description : Indicates which set of lights should be considered 00029 // "on" to illuminate geometry at this level and below. 00030 // A LightAttrib can either add lights or remove lights 00031 // from the total set of "on" lights. 00032 //////////////////////////////////////////////////////////////////// 00033 class EXPCL_PANDA_PGRAPH LightAttrib : public RenderAttrib { 00034 protected: 00035 INLINE LightAttrib(); 00036 INLINE LightAttrib(const LightAttrib ©); 00037 00038 PUBLISHED: 00039 00040 // This is the old, deprecated interface to LightAttrib. Do not use 00041 // any of these methods for new code; these methods will be removed 00042 // soon. 00043 enum Operation { 00044 O_set, 00045 O_add, 00046 O_remove 00047 }; 00048 static CPT(RenderAttrib) make(Operation op, 00049 Light *light); 00050 static CPT(RenderAttrib) make(Operation op, 00051 Light *light1, Light *light2); 00052 static CPT(RenderAttrib) make(Operation op, 00053 Light *light1, Light *light2, 00054 Light *light3); 00055 static CPT(RenderAttrib) make(Operation op, 00056 Light *light1, Light *light2, 00057 Light *light3, Light *light4); 00058 static CPT(RenderAttrib) make_default(); 00059 00060 Operation get_operation() const; 00061 00062 int get_num_lights() const; 00063 Light *get_light(int n) const; 00064 bool has_light(Light *light) const; 00065 00066 CPT(RenderAttrib) add_light(Light *light) const; 00067 CPT(RenderAttrib) remove_light(Light *light) const; 00068 00069 00070 // The following is the new, more general interface to the 00071 // LightAttrib. 00072 static CPT(RenderAttrib) make(); 00073 static CPT(RenderAttrib) make_all_off(); 00074 00075 INLINE int get_num_on_lights() const; 00076 INLINE NodePath get_on_light(int n) const; 00077 MAKE_SEQ(get_on_lights, get_num_on_lights, get_on_light); 00078 INLINE bool has_on_light(const NodePath &light) const; 00079 00080 INLINE int get_num_off_lights() const; 00081 INLINE NodePath get_off_light(int n) const; 00082 MAKE_SEQ(get_off_lights, get_num_off_lights, get_off_light); 00083 INLINE bool has_off_light(const NodePath &light) const; 00084 INLINE bool has_all_off() const; 00085 00086 INLINE bool is_identity() const; 00087 00088 CPT(RenderAttrib) add_on_light(const NodePath &light) const; 00089 CPT(RenderAttrib) remove_on_light(const NodePath &light) const; 00090 CPT(RenderAttrib) add_off_light(const NodePath &light) const; 00091 CPT(RenderAttrib) remove_off_light(const NodePath &light) const; 00092 00093 CPT(LightAttrib) filter_to_max(int max_lights) const; 00094 NodePath get_most_important_light() const; 00095 00096 public: 00097 virtual void output(ostream &out) const; 00098 virtual void write(ostream &out, int indent_level) const; 00099 00100 protected: 00101 virtual int compare_to_impl(const RenderAttrib *other) const; 00102 virtual size_t get_hash_impl() const; 00103 virtual CPT(RenderAttrib) compose_impl(const RenderAttrib *other) const; 00104 virtual CPT(RenderAttrib) invert_compose_impl(const RenderAttrib *other) const; 00105 virtual CPT(RenderAttrib) get_auto_shader_attrib_impl(const RenderState *state) const; 00106 00107 private: 00108 INLINE void check_filtered() const; 00109 void sort_on_lights(); 00110 00111 private: 00112 typedef ov_set<NodePath> Lights; 00113 Lights _on_lights, _off_lights; 00114 bool _off_all_lights; 00115 00116 typedef pmap< int, CPT(LightAttrib) > Filtered; 00117 Filtered _filtered; 00118 00119 UpdateSeq _sort_seq; 00120 00121 static CPT(RenderAttrib) _empty_attrib; 00122 static CPT(RenderAttrib) _all_off_attrib; 00123 00124 PUBLISHED: 00125 static int get_class_slot() { 00126 return _attrib_slot; 00127 } 00128 virtual int get_slot() const { 00129 return get_class_slot(); 00130 } 00131 00132 public: 00133 // This data is only needed when reading from a bam file. 00134 typedef pvector<PT(PandaNode) > NodeList; 00135 class BamAuxData : public BamReader::AuxData { 00136 public: 00137 // We hold a pointer to each of the PandaNodes on the on_list and 00138 // off_list. We will later convert these to NodePaths in 00139 // finalize(). 00140 int _num_off_lights; 00141 int _num_on_lights; 00142 NodeList _off_list; 00143 NodeList _on_list; 00144 }; 00145 00146 public: 00147 static void register_with_read_factory(); 00148 virtual void write_datagram(BamWriter *manager, Datagram &dg); 00149 virtual int complete_pointers(TypedWritable **plist, BamReader *manager); 00150 00151 virtual void finalize(BamReader *manager); 00152 00153 protected: 00154 static TypedWritable *make_from_bam(const FactoryParams ¶ms); 00155 void fillin(DatagramIterator &scan, BamReader *manager); 00156 00157 public: 00158 static TypeHandle get_class_type() { 00159 return _type_handle; 00160 } 00161 static void init_type() { 00162 RenderAttrib::init_type(); 00163 register_type(_type_handle, "LightAttrib", 00164 RenderAttrib::get_class_type()); 00165 _attrib_slot = register_slot(_type_handle, 20, make_default); 00166 } 00167 virtual TypeHandle get_type() const { 00168 return get_class_type(); 00169 } 00170 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00171 00172 private: 00173 static TypeHandle _type_handle; 00174 static int _attrib_slot; 00175 }; 00176 00177 #include "lightAttrib.I" 00178 00179 #endif 00180