"""
Four Plus Six
=============
"""
import numpy as np
from stk._internal.topology_graphs.edge import Edge
from .cage import Cage
from .vertices import LinearVertex, NonLinearVertex
[docs]
class FourPlusSix(Cage):
"""
Represents a cage topology graph.
Unoptimized construction
.. moldoc::
import moldoc.molecule as molecule
import stk
bb1 = stk.BuildingBlock(
smiles='NC1CCCCC1N',
functional_groups=[stk.PrimaryAminoFactory()],
)
bb2 = stk.BuildingBlock(
smiles='O=Cc1cc(C=O)cc(C=O)c1',
functional_groups=[stk.AldehydeFactory()],
)
cage = stk.ConstructedMolecule(
topology_graph=stk.cage.FourPlusSix((bb1, bb2)),
)
moldoc_display_molecule = molecule.Molecule(
atoms=(
molecule.Atom(
atomic_number=atom.get_atomic_number(),
position=position,
) for atom, position in zip(
cage.get_atoms(),
cage.get_position_matrix(),
)
),
bonds=(
molecule.Bond(
atom1_id=bond.get_atom1().get_id(),
atom2_id=bond.get_atom2().get_id(),
order=bond.get_order(),
) for bond in cage.get_bonds()
),
)
:class:`.MCHammer` optimized construction
.. moldoc::
import moldoc.molecule as molecule
import stk
bb1 = stk.BuildingBlock(
smiles='NC1CCCCC1N',
functional_groups=[stk.PrimaryAminoFactory()],
)
bb2 = stk.BuildingBlock(
smiles='O=Cc1cc(C=O)cc(C=O)c1',
functional_groups=[stk.AldehydeFactory()],
)
cage = stk.ConstructedMolecule(
topology_graph=stk.cage.FourPlusSix(
building_blocks=(bb1, bb2),
optimizer=stk.MCHammer(),
),
)
moldoc_display_molecule = molecule.Molecule(
atoms=(
molecule.Atom(
atomic_number=atom.get_atomic_number(),
position=position,
) for atom, position in zip(
cage.get_atoms(),
cage.get_position_matrix(),
)
),
bonds=(
molecule.Bond(
atom1_id=bond.get_atom1().get_id(),
atom2_id=bond.get_atom2().get_id(),
order=bond.get_order(),
) for bond in cage.get_bonds()
),
)
Nonlinear building blocks with three functional groups are
required for this topology.
Linear building blocks with two functional groups are required for
this topology.
When using a :class:`dict` for the `building_blocks` parameter,
as in :ref:`cage-topology-graph-examples`:
*Multi-Building Block Cage Construction*, a
:class:`.BuildingBlock`, with the following number of functional
groups, needs to be assigned to each of the following vertex ids:
| 3-functional groups: 0 to 3
| 2-functional groups: 4 to 9
See :class:`.Cage` for more details and examples.
"""
# Vertices of a tetrahdron so that origin is at the origin. Source:
# http://tinyurl.com/lc262h8.
_v0, _v1, _v2, _v3 = _non_linears = (
NonLinearVertex(0, np.array([0, 0, np.sqrt(6) / 2])),
NonLinearVertex(1, np.array([-1, -np.sqrt(3) / 3, -np.sqrt(6) / 6])),
NonLinearVertex(2, np.array([1, -np.sqrt(3) / 3, -np.sqrt(6) / 6])),
NonLinearVertex(3, np.array([0, 2 * np.sqrt(3) / 3, -np.sqrt(6) / 6])),
)
_vertex_prototypes = (
*_non_linears,
LinearVertex.init_at_center(4, (_v0, _v1)),
LinearVertex.init_at_center(5, (_v0, _v2)),
LinearVertex.init_at_center(6, (_v0, _v3)),
LinearVertex.init_at_center(7, (_v1, _v2)),
LinearVertex.init_at_center(8, (_v1, _v3)),
LinearVertex.init_at_center(9, (_v2, _v3)),
)
_edge_prototypes = (
Edge(0, _vertex_prototypes[4], _vertex_prototypes[0]),
Edge(1, _vertex_prototypes[4], _vertex_prototypes[1]),
Edge(2, _vertex_prototypes[5], _vertex_prototypes[0]),
Edge(3, _vertex_prototypes[5], _vertex_prototypes[2]),
Edge(4, _vertex_prototypes[6], _vertex_prototypes[0]),
Edge(5, _vertex_prototypes[6], _vertex_prototypes[3]),
Edge(6, _vertex_prototypes[7], _vertex_prototypes[1]),
Edge(7, _vertex_prototypes[7], _vertex_prototypes[2]),
Edge(8, _vertex_prototypes[8], _vertex_prototypes[1]),
Edge(9, _vertex_prototypes[8], _vertex_prototypes[3]),
Edge(10, _vertex_prototypes[9], _vertex_prototypes[2]),
Edge(11, _vertex_prototypes[9], _vertex_prototypes[3]),
)
_num_windows = 4
_num_window_types = 1