assimp模型导入库
OpenAssetImportLibrary(shortname:Assimp)isaportableOpenSourcelibrarytoimportvariouswell-known3Dmodelformatsinauniformmanner.Themostrecentversionalsoknowshowtoexport3dfilesandisthereforesuitableasageneral-purpose3Dmodelconverter.支持dae，md2,md3,mdl,md5,mesh3D各种模型导入附带测试工程文件