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758bacbb66
The problem of incorrect CUT is wrong Pcurve after projection onto cylinder of a small edge orthogonal to cylinder's axis. The result of projection is a line along V direction, but it should be along U. ProjLib_Cylinder has no specific functionality to build projection in most common case, so it should return "not done" flag to start projection based on curve approximation. Following changes are done: 1. ProjLib_Cylinder returns isDone=false in the following cases: * the projected line is not parallel to cylinder's axis * the plane of projected circle is not orthogonal to cylinder's axis 2. Test case added Minor correction of test case