COMP_CosOpenEdge
specify how the boundary continues at an open edge
Default:
COMP_CosOpenEdge = -0.3
If a boundary ends in an open edge (triangle edge with no topological connectivity to another, adjacent triangle),
then with
COMP_CosOpenEdge a virtual continuation direction of the boundary is given. The condition is
cos(OpenEdge) = t*n,
where t is the virtual continuation tangent, and n is the boundary normal of the present boundary element.
A given point x, which projects onto the open edge, is considered to be inside if
(x-x_proj)*n/norm(x-x_proj) >
COMP_CosOpenEdge
otherwise it is outside.