code: static List<Vector2d> newUnitVectors(final IAtom fromAtom, final List<IAtom> toAtoms) {
          final List<Vector2d> unitVectors = new ArrayList<Vector2d>(toAtoms.size());
          for (final IAtom toAtom : toAtoms) {
              unitVectors.add(newUnitVector(fromAtom.getPoint2d(), toAtom.getPoint2d()));
          }
          return unitVectors;
      }
docs: Create unit vectors from one atom to all other provided atoms.
  
  @param fromAtom reference atom (will become 0,0)
  @param toAtoms list of to atoms
  @return unit vectors