Panda3D
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00001 // Filename: factoryBase.I 00002 // Created by: drose (08May00) 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 00016 //////////////////////////////////////////////////////////////////// 00017 // Function: FactoryBase::make_instance 00018 // Access: Public 00019 // Description: Attempts to create a new instance of some class of 00020 // the indicated type, or some derivative if necessary. 00021 // If an instance of the exact type cannot be created, 00022 // the specified priorities will specify which derived 00023 // class will be preferred. 00024 // 00025 // This flavor of make_instance() accepts a string name 00026 // that indicates the desired type. It must be the name 00027 // of some already-registered type. 00028 //////////////////////////////////////////////////////////////////// 00029 INLINE TypedObject *FactoryBase:: 00030 make_instance(const string &type_name, const FactoryParams ¶ms) { 00031 TypeHandle handle = TypeRegistry::ptr()->find_type(type_name); 00032 nassertr(handle != TypeHandle::none(), NULL); 00033 00034 return make_instance(handle, params); 00035 } 00036 00037 00038 //////////////////////////////////////////////////////////////////// 00039 // Function: FactoryBase::make_instance_more_general 00040 // Access: Public 00041 // Description: Attempts to create an instance of the type requested, 00042 // or some base type of the type requested. Returns the 00043 // new instance created, or NULL if the instance could 00044 // not be created. 00045 // 00046 // This flavor of make_instance_more_general() accepts a 00047 // string name that indicates the desired type. It must 00048 // be the name of some already-registered type. 00049 //////////////////////////////////////////////////////////////////// 00050 INLINE TypedObject *FactoryBase:: 00051 make_instance_more_general(const string &type_name, 00052 const FactoryParams ¶ms) { 00053 TypeHandle handle = TypeRegistry::ptr()->find_type(type_name); 00054 nassertr(handle != TypeHandle::none(), NULL); 00055 00056 return make_instance_more_general(handle, params); 00057 } 00058