The normal vector size and direction depend on the input point and the sign of the unit value provided. Fixes: https://todo.sr.ht/~eliasnaur/gio/576 Signed-off-by: Walter Werner SCHNEIDER <contact@schnwalter.eu>
Signed-off-by: ddkwork
Signed-off-by: Egon Elbre <egonelbre@gmail.com>