/* ivcon.c  24 May 2001 */\\r\\n// http://www.math.iastate.edu/burkardt/g_src/ivcon/ivcon.html\\r\\n\\r\\n/* ivcon.cpp  22 Dec 2002 */\\r\\n\\r\\n/*\\r\\nPurpose:\\r\\n\\r\\nIVCON converts various 3D graphics files.\\r\\n\\r\\nAcknowledgements:\\r\\n\\r\\nCoding, comments, and advice were supplied by a number of collaborators.\\r\\n\\r\\nJohn F Flanagan made some corrections to the 3D Studio Max routines.\\r\\n\\r\\nZik Saleeba (zik@zikzak.net) enhanced the DXF routines, and added the \\r\\nGolgotha GMOD routines.\\r\\n\\r\\nThanks to Susan M. Fisher, University of North Carolina,\\r\\nDepartment of Computer Science, for pointing out a coding error\\r\\nin FACE_NULL_DELETE that was overwriting all the data!\\r\\n\\r\\n\\r\\nAuthor: John Burkardt \\r\\n\\r\\nModified: 04 July 2000\\r\\n\\r\\nModified: 23 Dec 2002 Ph. Guglielmetti www.DynaBits.com moved to C++\\r\\n\\r\\n*/