Hexpress: failed feature line recognition
Hello,
I came across a phenomena and I wonder if someone could tell a work around. Given a cube where one edge is not completely sharp since after half of the edge length the sharp edge runs over into a radius that increases from R=0 to R=max at the corner point. After importing as stl eleven edges a shown a feature lines but the single edge decribed above is absent, although I would expect to see a feature edge that covers half of the cube edge. From a feature angle point of view the featre edge should be there. Regards, Tim |
A picture would help understand the problem.
But I don't know if a feature edge can just stop, without connecting to other edges. Do you have to use STLs? |
Just imagine a cube where one edge radius develops from being 0 (sharp)
to a finite value (round). In Hexpress the whole edge is not marked as a feature line although the first part is perfectly sharp. If I read in stl the only way to detect feature lines is to evaluate the angle of surface normals between neigbouring cells. If that angle exceeds a given threshold then the common edge is a feature line. Obviously this is treated differently in Hexpress leading to the described deficit. Importing the geometry as Parasolid leads to the same failure. Regards, Tim |
How about splitting the cube at the point where the edge starts getting rounded?
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