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First step: intersect segment (p, p+growthvector) with surface elements
Second step: intersect segment with moved surface elements
TODO: Need mutual reduction of growthvector (not just taking one
intersection point)
IDEA: Take plane with segment, intersection point and
intersectionpoint-growthvector (need interpolation and barycentric
coordinates to get point on original surface element)
Then calculate in 2d how far one could go (depending on angle of two
growthvectors)
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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