def angle_e1
import bend-prot@0.1.0.0/bonded.bend as Bondedimport Base
import bend-prot@0.1.0.0/geom.bend as G
100def angle_e1(pa: G.Vec3, mb: Maybe<&2, G.Vec3>, mc: Maybe<&2, G.Vec3>, +k: F32, +eq: F32) -> F32:
101 match mb:
102 case None{}:
103 0.0
104 case Some{pb}:
105 angle_e0(pa, pb, mc, k, eq)