Panda3D
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00001 // Filename: eggSwitchCondition.h 00002 // Created by: drose (08Feb99) 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 EGGSWITCHCONDITION 00016 #define EGGSWITCHCONDITION 00017 00018 #include "pandabase.h" 00019 00020 #include "eggObject.h" 00021 #include "luse.h" 00022 00023 //////////////////////////////////////////////////////////////////// 00024 // Class : EggSwitchCondition 00025 // Description : This corresponds to a <SwitchCondition> entry within 00026 // a group. It indicates the condition at which a 00027 // level-of-detail is switched in or out. This is 00028 // actually an abstract base class for potentially any 00029 // number of specific different kinds of switching 00030 // conditions; presently, only a <Distance> type is 00031 // actually supported. 00032 //////////////////////////////////////////////////////////////////// 00033 class EXPCL_PANDAEGG EggSwitchCondition : public EggObject { 00034 PUBLISHED: 00035 virtual EggSwitchCondition *make_copy() const=0; 00036 virtual void write(ostream &out, int indent_level) const=0; 00037 00038 virtual void transform(const LMatrix4d &mat)=0; 00039 00040 00041 public: 00042 00043 static TypeHandle get_class_type() { 00044 return _type_handle; 00045 } 00046 static void init_type() { 00047 EggObject::init_type(); 00048 register_type(_type_handle, "EggSwitchCondition", 00049 EggObject::get_class_type()); 00050 } 00051 virtual TypeHandle get_type() const { 00052 return get_class_type(); 00053 } 00054 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00055 00056 private: 00057 static TypeHandle _type_handle; 00058 }; 00059 00060 00061 //////////////////////////////////////////////////////////////////// 00062 // Class : EggSwitchConditionDistance 00063 // Description : A SwitchCondition that switches the levels-of-detail 00064 // based on distance from the camera's eyepoint. 00065 //////////////////////////////////////////////////////////////////// 00066 class EXPCL_PANDAEGG EggSwitchConditionDistance : public EggSwitchCondition { 00067 PUBLISHED: 00068 EggSwitchConditionDistance(double switch_in, double switch_out, 00069 const LPoint3d ¢er, double fade = 0.0); 00070 00071 virtual EggSwitchCondition *make_copy() const; 00072 virtual void write(ostream &out, int indent_level) const; 00073 00074 virtual void transform(const LMatrix4d &mat); 00075 00076 double _switch_in, _switch_out, _fade; 00077 LPoint3d _center; 00078 00079 public: 00080 00081 static TypeHandle get_class_type() { 00082 return _type_handle; 00083 } 00084 static void init_type() { 00085 EggSwitchCondition::init_type(); 00086 register_type(_type_handle, "EggSwitchConditionDistance", 00087 EggSwitchCondition::get_class_type()); 00088 } 00089 virtual TypeHandle get_type() const { 00090 return get_class_type(); 00091 } 00092 00093 private: 00094 static TypeHandle _type_handle; 00095 }; 00096 00097 00098 #endif 00099