fn edge_rot_next_no_err(&self, edge_id: Option<VD::EdgeIndex>) -> Option<VD::EdgeIndex> {
        self.edges_
            .get(self.edges_.get(edge_id?.0)?.prev_()?.0)?
            .twin_()
    }
/// Returns a pointer to the rotation next edge
/// over the starting point of the half-edge.
/// This method returns None at any error
Returns a pointer to the rotation next edge
over the starting point of the half-edge.
This method returns None at any error
Returns a pointer to the rotation next edge over the starting point of the half - edge . This method returns None at any error
fn edge_rot_next_no_err(&self, edge_id: Option<VD::EdgeIndex>) -> Option<VD::EdgeIndex> {
        self.edges_
            .get(self.edges_.get(edge_id?.0)?.prev_()?.0)?
            .twin_()
    }
fn edge_rot_next_no_err ( & self , edge_id : Option < VD :: EdgeIndex > ) -> Option < VD :: EdgeIndex > { self . edges_ . get ( self . edges_ . get ( edge_id ? . 0 ) ? . prev_ ( ) ? . 0 ) ? . twin_ ( ) }
Returns a pointer to the rotation next edge
over the starting point of the half-edge.
Returns a pointer to the rotation next edge over the starting point of the half - edge .
&self
edge_id
Option<VD::EdgeIndex>