Reader and writer for IFC files in STEP format

 IfcPlusPlus is an open source C++ class model, as well as a reader
 and writer for IFC files in STEP format.
 .
 Features:
 - easy and efficient memory management using smart pointers
 - parallel reader for very fast parsing on multi-core CPU's
 .
 Additionally, there's a simple IFC viewer application, using Qt and
 OpenSceneGraph.
 .
 This package contains the sample viewer.