, , 17 2016. (Open Design Alliance, ODA) , Teigha 12-13 . Teigha . Teigha, , Teigha. , , ODA. , , 3D-PDF-. , . . , Teigha. , ODA : - Teigha Cloud. , Teigha Cloud. ODA . . . Teigha Teigha , . Teigha .dwg, .dgn .pdf , . Teigha , C++, .NET Java. Teigha (Open Design Alliance). .