Method IsCodirectional

Checks whether two vectors point the same way, using the default tolerance.

public static bool IsCodirectional(GeoVector3 v1, GeoVector3 v2)

Checks whether two vectors point the same way, within an angular tolerance.

public static bool IsCodirectional(GeoVector3 v1, GeoVector3 v2, Tolerance tolerance)

This is IsParallel(GeoVector3, GeoVector3, Tolerance) with the anti-parallel case excluded, which is the question to ask when comparing surface normals or travel directions.