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refactor: modernize System and Molecule classes with dataclasses and cleanup

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- Convert System and Molecule classes to use @dataclass and field for defaults
- Remove unused imports and legacy code from system.py
- Move print_charges_and_dipole method from System to Player for better separation of concerns
- Minor formatting and import order improvements for consistency
This commit is contained in:
Vitor Hideyoshi
2026-02-28 15:54:46 -03:00
parent a5504b0435
commit 636c65c07c
5 changed files with 46 additions and 153 deletions
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2
diceplayer/environment/atom.py
View File

@@ -1,4 +1,4 @@
from diceplayer.utils.ptable import PTable, AtomInfo
from diceplayer.utils.ptable import AtomInfo, PTable
from dataclasses import dataclass

22
diceplayer/environment/molecule.py
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@@ -1,8 +1,5 @@
from __future__ import annotations
from dataclasses import dataclass, Field
from functools import cached_property
from diceplayer import logger
from diceplayer.environment import Atom
from diceplayer.utils.cache import invalidate_computed_properties
@@ -12,10 +9,12 @@ from diceplayer.utils.ptable import GHOST_NUMBER
import numpy as np
import numpy.typing as npt
from numpy.linalg import linalg
from typing_extensions import List, Tuple, Self
from typing_extensions import List, Self, Tuple
import math
from copy import deepcopy
from dataclasses import dataclass, field
from functools import cached_property
@dataclass
@@ -30,8 +29,9 @@ class Molecule:
com (npt.NDArray[np.float64]): The center of mass of the molecule
inertia_tensor (npt.NDArray[np.float64]): The inertia tensor of the molecule
"""
molname: str
atom: List[Atom] = Field(default_factory=list)
atom: List[Atom] = field(default_factory=list)
@cached_property
def total_mass(self) -> float:
@@ -301,12 +301,16 @@ class Molecule:
Returns:
float: minimum distance between the two molecules
"""
coords_a = np.array([(a.rx, a.ry, a.rz) for a in self.atom if a.na != GHOST_NUMBER])
coords_b = np.array([(a.rx, a.ry, a.rz) for a in molec.atom if a.na != GHOST_NUMBER])
coords_a = np.array(
[(a.rx, a.ry, a.rz) for a in self.atom if a.na != GHOST_NUMBER]
)
coords_b = np.array(
[(a.rx, a.ry, a.rz) for a in molec.atom if a.na != GHOST_NUMBER]
)
if len(coords_a) == 0 or len(coords_b) == 0:
raise ValueError("No real atoms to compare")
diff = coords_a[:, None, :] - coords_b[None, :, :]
d2 = np.sum(diff ** 2, axis=-1)
return np.sqrt(d2.min())
d2 = np.sum(diff**2, axis=-1)
return np.sqrt(d2.min())

138
diceplayer/environment/system.py
View File

@@ -1,15 +1,11 @@
from diceplayer import logger
from diceplayer.environment.molecule import Molecule
from diceplayer.utils.misc import BOHR2ANG
import numpy as np
from numpy import linalg
from typing_extensions import List, Tuple
from typing_extensions import List
import math
from copy import deepcopy
from dataclasses import dataclass, field
@dataclass
class System:
"""
System class declaration. This class is used throughout the DicePlayer program to represent the system containing the molecules.
@@ -19,12 +15,8 @@ class System:
nmols (List[int]): List of number of molecules in the system
"""
def __init__(self) -> None:
"""
Initializes an empty system object that will be populated afterwards
"""
self.nmols: List[int] = []
self.molecule: List[Molecule] = []
nmols: List[int] = field(default_factory=list)
molecule: List[Molecule] = field(default_factory=list)
def add_type(self, m: Molecule) -> None:
"""
@@ -36,123 +28,3 @@ class System:
if not isinstance(m, Molecule):
raise TypeError("Error: molecule is not a Molecule instance")
self.molecule.append(m)
def update_molecule(self, position: np.ndarray) -> None:
"""Updates the position of the molecule in the Output file
Args:
position (np.ndarray): numpy position vector
"""
position_in_ang = (position * BOHR2ANG).tolist()
self.add_type(deepcopy(self.molecule[0]))
for atom in self.molecule[-1].atom:
atom.rx = position_in_ang.pop(0)
atom.ry = position_in_ang.pop(0)
atom.rz = position_in_ang.pop(0)
rmsd, self.molecule[0] = self.rmsd_fit(-1, 0)
self.molecule.pop(-1)
logger.info("Projected new conformation of reference molecule with RMSD fit")
logger.info(f"RMSD = {rmsd:>8.5f} Angstrom")
def rmsd_fit(self, p_index: int, r_index: int) -> Tuple[float, Molecule]:
projecting_mol = self.molecule[p_index]
reference_mol = self.molecule[r_index]
if len(projecting_mol.atom) != len(reference_mol.atom):
raise RuntimeError(
"Error in RMSD fit procedure: molecules have different number of atoms"
)
dim = len(projecting_mol.atom)
new_projecting_mol = deepcopy(projecting_mol)
new_reference_mol = deepcopy(reference_mol)
new_projecting_mol.move_center_of_mass_to_origin()
new_reference_mol.move_center_of_mass_to_origin()
x = []
y = []
for atom in new_projecting_mol.atom:
x.extend([atom.rx, atom.ry, atom.rz])
for atom in new_reference_mol.atom:
y.extend([atom.rx, atom.ry, atom.rz])
x = np.array(x).reshape(dim, 3)
y = np.array(y).reshape(dim, 3)
r = np.matmul(y.T, x)
rr = np.matmul(r.T, r)
try:
evals, evecs = linalg.eigh(rr)
except Exception as err:
raise RuntimeError(
"Error: diagonalization of RR matrix did not converge"
) from err
a1 = evecs[:, 2].T
a2 = evecs[:, 1].T
a3 = np.cross(a1, a2)
A = np.array([a1[0], a1[1], a1[2], a2[0], a2[1], a2[2], a3[0], a3[1], a3[2]])
A = A.reshape(3, 3)
b1 = np.matmul(r, a1.T).T # or np.dot(r, a1)
b1 /= linalg.norm(b1)
b2 = np.matmul(r, a2.T).T # or np.dot(r, a2)
b2 /= linalg.norm(b2)
b3 = np.cross(b1, b2)
B = np.array([b1[0], b1[1], b1[2], b2[0], b2[1], b2[2], b3[0], b3[1], b3[2]])
B = B.reshape(3, 3).T
rot_matrix = np.matmul(B, A)
x = np.matmul(rot_matrix, x.T).T
rmsd = 0
for i in range(dim):
rmsd += (
(x[i, 0] - y[i, 0]) ** 2
+ (x[i, 1] - y[i, 1]) ** 2
+ (x[i, 2] - y[i, 2]) ** 2
)
rmsd = math.sqrt(rmsd / dim)
for i in range(dim):
new_projecting_mol.atom[i].rx = x[i, 0]
new_projecting_mol.atom[i].ry = x[i, 1]
new_projecting_mol.atom[i].rz = x[i, 2]
projected_mol = new_projecting_mol.translate(reference_mol.com)
return rmsd, projected_mol
def print_charges_and_dipole(self, cycle: int) -> None:
"""
Print the charges and dipole of the molecule in the Output file
Args:
cycle (int): Number of the cycle
fh (TextIO): Output file
"""
logger.info("Cycle # {}\n".format(cycle))
logger.info("Number of site: {}\n".format(len(self.molecule[0].atom)))
chargesAndDipole = self.molecule[0].charges_and_dipole()
logger.info(
"{:>10.6f} {:>10.6f} {:>10.6f} {:>10.6f} {:>10.6f}\n".format(
chargesAndDipole[0],
chargesAndDipole[1],
chargesAndDipole[2],
chargesAndDipole[3],
chargesAndDipole[4],
)
)

28
diceplayer/player.py
View File

@@ -267,8 +267,6 @@ class Player:
if "position" not in result:
raise RuntimeError("Optimization failed. No position found in result.")
self.system.update_molecule(result["position"])
else:
if "charges" not in result:
raise RuntimeError(
@@ -277,13 +275,37 @@ class Player:
diff = self.system.molecule[0].update_charges(result["charges"])
self.system.print_charges_and_dipole(cycle)
self.print_charges_and_dipole(cycle)
self.print_geoms(cycle)
if diff < self.config.gaussian.chg_tol:
logger.info(f"Charges converged after {cycle} cycles.")
raise StopIteration()
def print_charges_and_dipole(self, cycle: int) -> None:
"""
Print the charges and dipole of the molecule in the Output file
Args:
cycle (int): Number of the cycle
fh (TextIO): Output file
"""
logger.info("Cycle # {}\n".format(cycle))
logger.info("Number of site: {}\n".format(len(self.system.molecule[0].atom)))
chargesAndDipole = self.system.molecule[0].charges_and_dipole()
logger.info(
"{:>10.6f} {:>10.6f} {:>10.6f} {:>10.6f} {:>10.6f}\n".format(
chargesAndDipole[0],
chargesAndDipole[1],
chargesAndDipole[2],
chargesAndDipole[3],
chargesAndDipole[4],
)
)
def print_geoms(self, cycle: int):
with open(self.config.geoms_file, "a") as file:
file.write(f"Cycle # {cycle}\n")