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The global variable readedges that the API uses doesn't clear itself after the Ng_STL_Geometry * has been initialized. It would cause problems for people who wish to initialize another Ng_STL_Geometry if they used Ng_STL_AddEdge in before their previous initialization.
Netgen mesh generator
NETGEN is an automatic 3d tetrahedral mesh generator. It accepts input from constructive solid geometry (CSG) or boundary representation (BRep) from STL file format. The connection to a geometry kernel allows the handling of IGES and STEP files. NETGEN contains modules for mesh optimization and hierarchical mesh refinement. Netgen 6.x supports scripting via a Python interface. Netgen is open source based on the LGPL license. It is available for Unix/Linux, Windows, and OSX.
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