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dockonsurf / modules / screening.py @ cf40df1b

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import logging
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import numpy as np
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import ase
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logger = logging.getLogger('DockOnSurf')
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def assign_prop(atoms: ase.Atoms, prop_name: str, prop_val):  # TODO Needed?
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    atoms.info[prop_name] = prop_val
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def select_confs(orig_conf_list: list, calc_dirs: list, magns: list,
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                 num_sel: int, code: str):
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    """Takes a list ase.Atoms and selects the most different magnitude-wise.
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    Given a list of ase.Atoms objects and a list of magnitudes, it selects a
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    number of the most different conformers according to every magnitude
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    specified.
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    @param orig_conf_list: list of ase.Atoms objects to select among.
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    @param calc_dirs: List of directories where to read the energies from.
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    @param magns: list of str with the names of the magnitudes to use for the
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        conformer selection. Supported magnitudes: 'energy', 'moi'.
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    @param num_sel: number of conformers to select for every of the magnitudes.
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    @param code: The code that generated the magnitude information.
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         Supported codes: See formats.py
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    @return: list of the selected ase.Atoms objects.
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    """
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    from copy import deepcopy
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    from modules.formats import collect_energies
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    conf_list = deepcopy(orig_conf_list)
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    conf_enrgs, mois, selected_ids = [], [], []
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    if num_sel >= len(conf_list):
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        logger.warning('Number of conformers per magnitude is equal or larger '
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                       'than the total number of conformers. Using all '
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                       f'available conformers: {len(conf_list)}.')
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        return conf_list
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    # Read properties
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    if 'energy' in magns:
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        conf_enrgs = collect_energies(calc_dirs, code, 'isolated')
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    if 'moi' in magns:
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        mois = np.array([conf.get_moments_of_inertia() for conf in conf_list])
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    # Assign values
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    for i, conf in enumerate(conf_list):
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        assign_prop(conf, 'idx', i)
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        if 'energy' in magns:
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            assign_prop(conf, 'energy', conf_enrgs[i])
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        if 'moi' in magns:
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            assign_prop(conf, 'moi', mois[i, 2])
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    # pick ids
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    for magn in magns:
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        sorted_list = sorted(conf_list, key=lambda conf: abs(conf.info[magn]))
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        if sorted_list[-1].info['idx'] not in selected_ids:
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            selected_ids.append(sorted_list[-1].info['idx'])
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        if num_sel > 1:
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            for i in range(0, len(sorted_list) - 1,
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                           len(conf_list) // (num_sel - 1)):
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                if sorted_list[i].info['idx'] not in selected_ids:
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                    selected_ids.append(sorted_list[i].info['idx'])
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    logger.info(f'Selected {len(selected_ids)} conformers for adsorption.')
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    return [conf_list[idx] for idx in selected_ids]
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def get_vect_angle(v1: list, v2: list, ref=None, degrees=True):
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    """Computes the angle between two vectors.
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    @param v1: The first vector.
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    @param v2: The second vector.
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    @param ref: Orthogonal vector to both v1 and v2,
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        along which the sign of the rotation is defined (i.e. positive if
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        counterclockwise angle when facing ref)
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    @param degrees: Whether the result should be in radians (True) or in
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        degrees (False).
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    @return: The angle in radians if degrees = False, or in degrees if
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        degrees =True
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    """
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    v1_u = v1 / np.linalg.norm(v1)
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    v2_u = v2 / np.linalg.norm(v2)
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    angle = np.arccos(np.clip(np.dot(v1_u, v2_u), -1.0, 1.0))
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    if ref is not None:
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        # Give sign according to ref direction
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        angle *= (1 if np.dot(np.cross(v1, v2), ref) >= 0 else -1)
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    return angle if not degrees else angle * 180 / np.pi
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def vect_avg(vects):
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    """Computes the element-wise mean of a set of vectors.
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    @param vects: list of lists-like: containing the vectors (num_vectors,
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        length_vector).
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    @return: vector average computed doing the element-wise mean.
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    """
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    from modules.utilities import try_command
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    err = "vect_avg parameter vects must be a list-like, able to be converted" \
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          " np.array"
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    array = try_command(np.array, [(ValueError, err)], vects)
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    if len(array.shape) == 1:
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        return array
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    else:
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        num_vects = array.shape[1]
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        return np.array([np.average(array[:, i]) for i in range(num_vects)])
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def get_atom_coords(atoms: ase.Atoms, ctrs_list=None):
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    """Gets the coordinates of the specified indices from a ase.Atoms object.
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    Given an ase.Atoms object and a list of atom indices specified in ctrs_list
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    it gets the coordinates of the specified atoms. If the element in the
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    ctrs_list is not an index but yet a list of indices, it computes the
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    element-wise mean of the coordinates of the atoms specified in the inner
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    list.
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    @param atoms: ase.Atoms object for which to obtain the coordinates of.
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    @param ctrs_list: list of (indices/list of indices) of the atoms for which
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                      the coordinates should be extracted.
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    @return: np.ndarray of atomic coordinates.
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    """
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    coords = []
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    err = "'ctrs_list' argument must be an integer, a list of integers or a " \
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          "list of lists of integers. Every integer must be in the range " \
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          "[0, num_atoms)"
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    if ctrs_list is None:
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        ctrs_list = range(len(atoms))
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    elif isinstance(ctrs_list, int):
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        if ctrs_list not in range(len(atoms)):
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            logger.error(err)
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            raise ValueError(err)
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        return atoms[ctrs_list].position
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    for elem in ctrs_list:
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        if isinstance(elem, list):
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            coords.append(vect_avg([atoms[c].position for c in elem]))
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        elif isinstance(elem, int):
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            coords.append(atoms[elem].position)
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        else:
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            logger.error(err)
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            raise ValueError
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    return np.array(coords)
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def compute_norm_vect(atoms, idxs, cell):
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    """Computes the local normal vector of a surface at a given site.
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    Given an ase.Atoms object and a site defined as a linear combination of
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    atoms it computes the vector perpendicular to the surface, considering the
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    local environment of the site.
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    @param atoms: ase.Atoms object of the surface.
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    @param idxs: list or int: Index or list of indices of the atom/s that define
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        the site
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    @param cell: Unit cell. A 3x3 matrix (the three unit cell vectors)
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    @return: numpy.ndarray of the coordinates of the vector locally
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    perpendicular to the surface.
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    """
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    from modules.ASANN import coordination_numbers as coord_nums
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    if isinstance(idxs, list):
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        atm_vect = [-np.round(coord_nums(atoms.get_scaled_positions(),
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                                         pbc=np.any(cell),
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                                         cell_vectors=cell)[3][i], 2)
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                    for i in idxs]
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        norm_vec = vect_avg([vect / np.linalg.norm(vect) for vect in atm_vect])
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    elif isinstance(idxs, int):
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        norm_vec = -coord_nums(atoms.get_scaled_positions(),
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                               pbc=np.any(cell),
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                               cell_vectors=cell)[3][idxs]
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    else:
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        err = "'idxs' must be either an int or a list"
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        logger.error(err)
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        raise ValueError(err)
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    norm_vec = np.round(norm_vec, 2) / np.linalg.norm(np.round(norm_vec, 2))
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    logger.info(f"The perpendicular vector to the surface at site '{idxs}' is "
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                f"{norm_vec}")
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    return norm_vec
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def align_molec(orig_molec, ctr_coord, ref_vect):
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    """Align a molecule to a vector by a center.
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    Given a reference vector to be aligned to and some coordinates acting as
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    alignment center, it first averages the vectors pointing to neighboring
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    atoms and then tries to align this average vector to the target. If the
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    average vector is 0 it takes the vector to the nearest neighbor.
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    @param orig_molec: The molecule to align.
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    @param ctr_coord: The coordinates to use ase alignment center.
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    @param ref_vect: The vector to be aligned with.
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    @return: ase.Atoms of the aligned molecule.
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    """
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    from copy import deepcopy
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    from ase import Atom
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    from ase.neighborlist import natural_cutoffs, neighbor_list
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    molec = deepcopy(orig_molec)
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    if len(molec) == 1:
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        err_msg = "Cannot align a single atom"
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        logger.error(err_msg)
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        ValueError(err_msg)
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    cutoffs = natural_cutoffs(molec, mult=1.2)
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    # Check if ctr_coord are the coordinates of an atom and if not creates a
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    # dummy one to extract the neighboring atoms.
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    ctr_idx = None
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    dummy_atom = False
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    for atom in molec:
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        if np.allclose(ctr_coord, atom.position, rtol=1e-2):
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            ctr_idx = atom.index
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            break
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    if ctr_idx is None:
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        molec.append(Atom('X', position=ctr_coord))
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        cutoffs.append(0.2)
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        ctr_idx = len(molec) - 1
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        dummy_atom = True
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    # Builds the neighbors and computes the average vector
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    refs, vects = neighbor_list("iD", molec, cutoffs, self_interaction=False)
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    neigh_vects = [vects[i] for i, atm in enumerate(refs) if atm == ctr_idx]
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    # If no neighbors are present, the cutoff of the alignment center is
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    # set to a value where at least one atom is a neighbor and neighbors are
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    # recalculated.
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    if len(neigh_vects) == 0:
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        min_dist, min_idx = (np.inf, np.inf)
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        for atom in molec:
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            if atom.index == ctr_idx:
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                continue
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            if molec.get_distance(ctr_idx, atom.index) < min_dist:
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                min_dist = molec.get_distance(ctr_idx, atom.index)
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                min_idx = atom.index
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        cutoffs[ctr_idx] = min_dist - cutoffs[min_idx] + 0.05
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        refs, vects = neighbor_list("iD", molec, cutoffs,
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                                    self_interaction=False)
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        neigh_vects = [vects[i] for i, atm in enumerate(refs) if atm == ctr_idx]
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    target_vect = vect_avg(neigh_vects)
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    # If the target vector is 0 (the center is at the baricenter of its
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    # neighbors). Assuming the adsorption center is coplanar or colinear to its
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    # neighbors (it would not make a lot of sense to chose a center which is
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    # the baricenter of neighbors distributed in 3D), the target_vector is
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    # chosen perpendicular to the nearest neighbor.
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    if np.allclose(target_vect, 0, rtol=1e-3):
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        nn_vect = np.array([np.inf] * 3)
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        for vect in neigh_vects:
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            if np.linalg.norm(vect) < np.linalg.norm(nn_vect):
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                nn_vect = vect
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        cart_axes = [[1, 0, 0], [0, 1, 0], [0, 0, 1]]
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        axis = cart_axes[int(np.argmax([np.linalg.norm(np.cross(ax, nn_vect))
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                                        for ax in cart_axes]))]
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        target_vect = np.cross(axis, nn_vect)
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    rot_vect = np.cross(target_vect, ref_vect)
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    if np.allclose(rot_vect, 0):
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        cart_axes = [[1, 0, 0], [0, 1, 0], [0, 0, 1]]
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        axis = cart_axes[int(np.argmax([np.linalg.norm(np.cross(ax, ref_vect))
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                                        for ax in cart_axes]))]
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        rot_vect = np.cross(ref_vect, axis)
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    rot_angle = -get_vect_angle(ref_vect, target_vect, rot_vect)
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    molec.rotate(rot_angle, rot_vect, ctr_coord)
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    if dummy_atom:
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        del molec[-1]
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    return molec
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def add_adsorbate(slab, adsorbate, site_coord, ctr_coord, height, offset=None,
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                  norm_vect=(0, 0, 1)):
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    """Add an adsorbate to a surface.
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    This function extends the functionality of ase.build.add_adsorbate
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    (https://wiki.fysik.dtu.dk/ase/ase/build/surface.html#ase.build.add_adsorbate)
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    by enabling to change the z coordinate and the axis perpendicular to the
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    surface.
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    @param slab: ase.Atoms object containing the coordinates of the surface
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    @param adsorbate: ase.Atoms object containing the coordinates of the
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        adsorbate.
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    @param site_coord: The coordinates of the adsorption site on the surface.
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    @param ctr_coord: The coordinates of the adsorption center in the molecule.
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    @param height: The height above the surface where to adsorb.
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    @param offset: Offsets the adsorbate by a number of unit cells. Mostly
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        useful when adding more than one adsorbate.
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    @param norm_vect: The vector perpendicular to the surface.
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    """
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    from copy import deepcopy
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    info = slab.info.get('adsorbate_info', {})
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    pos = np.array([0.0, 0.0, 0.0])  # part of absolute coordinates
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    spos = np.array([0.0, 0.0, 0.0])  # part relative to unit cell
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    norm_vect_u = np.array(norm_vect) / np.linalg.norm(norm_vect)
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    if offset is not None:
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        spos += np.asarray(offset, float)
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    if isinstance(site_coord, str):
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        # A site-name:
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        if 'sites' not in info:
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            raise TypeError('If the atoms are not made by an ase.build '
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                            'function, position cannot be a name.')
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        if site_coord not in info['sites']:
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            raise TypeError('Adsorption site %s not supported.' % site_coord)
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        spos += info['sites'][site_coord]
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    else:
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        pos += site_coord
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    if 'cell' in info:
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        cell = info['cell']
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    else:
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        cell = slab.get_cell()
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    pos += np.dot(spos, cell)
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    # Convert the adsorbate to an Atoms object
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    if isinstance(adsorbate, ase.Atoms):
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        ads = deepcopy(adsorbate)
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    elif isinstance(adsorbate, ase.Atom):
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        ads = ase.Atoms([adsorbate])
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    else:
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        # Assume it is a string representing a single Atom
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        ads = ase.Atoms([ase.Atom(adsorbate)])
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    pos += height * norm_vect_u
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    # Move adsorbate into position
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    ads.translate(pos - ctr_coord)
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    # Attach the adsorbate
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    slab.extend(ads)
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def check_collision(slab_molec, slab_num_atoms, min_height, vect, nn_slab=0,
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                    nn_molec=0, coll_coeff=1.2):
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    """Checks whether a slab and a molecule collide or not.
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    @param slab_molec: The system of adsorbate-slab for which to detect if there
321 5f3f4b69 Carles Marti
        are collisions.
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    @param nn_slab: Number of neigbors in the surface.
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    @param nn_molec: Number of neighbors in the molecule.
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    @param coll_coeff: The coefficient that multiplies the covalent radius of
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        atoms resulting in a distance that two atoms being closer to that is
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        considered as atomic collision.
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    @param slab_num_atoms: Number of atoms of the bare slab.
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    @param min_height: The minimum height atoms can have to not be considered as
329 5f3f4b69 Carles Marti
        colliding.
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    @param vect: The vector perpendicular to the slab.
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    @return: bool, whether the surface and the molecule collide.
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    """
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    from ase.neighborlist import natural_cutoffs, neighbor_list
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    # Check structure overlap by height
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    if min_height is not False:
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        cart_axes = [[1.0, 0.0, 0.0], [0.0, 1.0, 0.0], [0.0, 0.0, 1.0],
338 a4b57124 Carles Marti
                     [-1.0, 0.0, 0.0], [0.0, -1.0, 0.0], [0.0, 0.0, -1.0]]
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        if vect.tolist() not in cart_axes:
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            err_msg = "'min_coll_height' option is only implemented for " \
341 e8bebcca Carles Marti
                      "'surf_norm_vect' to be one of the x, y or z axes. "
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            logger.error(err_msg)
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            raise ValueError(err_msg)
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        for atom in slab_molec[slab_num_atoms:]:
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            for i, coord in enumerate(vect):
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                if coord == 0:
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                    continue
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                if atom.position[i] * coord < min_height * coord:
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                    return True
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    # Check structure overlap by sphere collision
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    if coll_coeff is not False:
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        slab_molec_cutoffs = natural_cutoffs(slab_molec, mult=coll_coeff)
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        slab_molec_nghbs = len(
355 b4b2f307 Carles Marti
            neighbor_list("i", slab_molec, slab_molec_cutoffs))
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        if slab_molec_nghbs > nn_slab + nn_molec:
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            return True
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    return False
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def correct_coll(molec, slab, ctr_coord, site_coord, num_pts,
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                 min_coll_height, norm_vect, slab_nghbs, molec_nghbs,
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                 coll_coeff, height=2.5):
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    # TODO Rethink this function
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    """Tries to adsorb a molecule on a slab trying to avoid collisions by doing
367 e8bebcca Carles Marti
    small rotations.
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    @param molec: ase.Atoms object of the molecule to adsorb
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    @param slab: ase.Atoms object of the surface on which to adsorb the
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        molecule
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    @param ctr_coord: The coordinates of the molecule to use as adsorption
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        center.
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    @param site_coord: The coordinates of the surface on which to adsorb the
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        molecule
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    @param num_pts: Number on which to sample Euler angles.
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    @param min_coll_height: The lowermost height for which to detect a collision
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    @param norm_vect: The vector perpendicular to the surface.
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    @param slab_nghbs: Number of neigbors in the surface.
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    @param molec_nghbs: Number of neighbors in the molecule.
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    @param coll_coeff: The coefficient that multiplies the covalent radius of
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        atoms resulting in a distance that two atoms being closer to that is
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        considered as atomic collision.
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    @param height: Height on which to try adsorption
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    @return collision: bool, whether the structure generated has collisions
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        between slab and adsorbate.
387 e8bebcca Carles Marti
    """
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    from copy import deepcopy
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    slab_num_atoms = len(slab)
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    slab_molec = []
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    collision = True
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    max_corr = 6  # Should be an even number
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    d_angle = 180 / ((max_corr / 2.0) * num_pts)
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    num_corr = 0
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    while collision and num_corr <= max_corr:
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        k = num_corr * (-1) ** num_corr
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        slab_molec = deepcopy(slab)
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        molec.euler_rotate(k * d_angle, k * d_angle / 2, k * d_angle,
399 e8bebcca Carles Marti
                           center=ctr_coord)
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        add_adsorbate(slab_molec, molec, site_coord, ctr_coord, height,
401 e8bebcca Carles Marti
                      norm_vect=norm_vect)
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        collision = check_collision(slab_molec, slab_num_atoms, min_coll_height,
403 e8bebcca Carles Marti
                                    norm_vect, slab_nghbs, molec_nghbs,
404 e8bebcca Carles Marti
                                    coll_coeff)
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        num_corr += 1
406 e8bebcca Carles Marti
    return slab_molec, collision
407 5f3f4b69 Carles Marti
408 5f3f4b69 Carles Marti
409 c25aa299 Carles Marti
def dissociate_h(slab_molec_orig, h_idx, num_atoms_slab, h_acceptor,
410 c25aa299 Carles Marti
                 neigh_cutoff=1):
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    # TODO rethink
412 91ae8d86 Carles Marti
    """Tries to dissociate a H from the molecule and adsorbs it on the slab.
413 b4b2f307 Carles Marti

414 91ae8d86 Carles Marti
    Tries to dissociate a H atom from the molecule and adsorb in on top of the
415 91ae8d86 Carles Marti
    surface if the distance is shorter than two times the neigh_cutoff value.
416 b4b2f307 Carles Marti
    @param slab_molec_orig: The ase.Atoms object of the system adsorbate-slab.
417 b4b2f307 Carles Marti
    @param h_idx: The index of the hydrogen atom to carry out adsorption of.
418 b4b2f307 Carles Marti
    @param num_atoms_slab: The number of atoms of the slab without adsorbate.
419 c25aa299 Carles Marti
    @param h_acceptor: List of atom types or atom numbers that are H-acceptors.
420 b4b2f307 Carles Marti
    @param neigh_cutoff: half the maximum distance between the surface and the
421 b4b2f307 Carles Marti
        H for it to carry out dissociation.
422 b4b2f307 Carles Marti
    @return: An ase.Atoms object of the system adsorbate-surface with H
423 b4b2f307 Carles Marti
    """
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    from copy import deepcopy
425 b4b2f307 Carles Marti
    from ase.neighborlist import NeighborList
426 b4b2f307 Carles Marti
    slab_molec = deepcopy(slab_molec_orig)
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    cutoffs = len(slab_molec) * [neigh_cutoff]
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    nl = NeighborList(cutoffs, self_interaction=False, bothways=True, skin=0.0)
429 b4b2f307 Carles Marti
    nl.update(slab_molec)
430 b4b2f307 Carles Marti
    surf_h_vect = np.array([np.infty] * 3)
431 c25aa299 Carles Marti
    if h_acceptor == 'all':
432 c25aa299 Carles Marti
        h_acceptor = list(range(num_atoms_slab))
433 b4b2f307 Carles Marti
    for neigh_idx in nl.get_neighbors(h_idx)[0]:
434 c25aa299 Carles Marti
        for elm in h_acceptor:
435 c25aa299 Carles Marti
            if isinstance(elm, int):
436 c25aa299 Carles Marti
                if neigh_idx == elm and neigh_idx < num_atoms_slab:
437 c25aa299 Carles Marti
                    dist = np.linalg.norm(slab_molec[neigh_idx].position -
438 c25aa299 Carles Marti
                                          slab_molec[h_idx].position)
439 c25aa299 Carles Marti
                    if dist < np.linalg.norm(surf_h_vect):
440 c25aa299 Carles Marti
                        surf_h_vect = slab_molec[neigh_idx].position \
441 c25aa299 Carles Marti
                                      - slab_molec[h_idx].position
442 c25aa299 Carles Marti
            else:
443 c25aa299 Carles Marti
                if slab_molec[neigh_idx].symbol == elm \
444 c25aa299 Carles Marti
                        and neigh_idx < num_atoms_slab:
445 c25aa299 Carles Marti
                    dist = np.linalg.norm(slab_molec[neigh_idx].position -
446 c25aa299 Carles Marti
                                          slab_molec[h_idx].position)
447 c25aa299 Carles Marti
                    if dist < np.linalg.norm(surf_h_vect):
448 c25aa299 Carles Marti
                        surf_h_vect = slab_molec[neigh_idx].position \
449 c25aa299 Carles Marti
                                      - slab_molec[h_idx].position
450 c25aa299 Carles Marti
451 b4b2f307 Carles Marti
    if np.linalg.norm(surf_h_vect) != np.infty:
452 b4b2f307 Carles Marti
        trans_vect = surf_h_vect - surf_h_vect / np.linalg.norm(surf_h_vect)
453 b4b2f307 Carles Marti
        slab_molec[h_idx].position = slab_molec[h_idx].position + trans_vect
454 b4b2f307 Carles Marti
        return slab_molec
455 b4b2f307 Carles Marti
456 b4b2f307 Carles Marti
457 c25aa299 Carles Marti
def dissociation(slab_molec, h_donor, h_acceptor, num_atoms_slab):
458 b4b2f307 Carles Marti
    # TODO multiple dissociation
459 b4b2f307 Carles Marti
    """Decides which H atoms to dissociate according to a list of atoms.
460 b4b2f307 Carles Marti

461 b4b2f307 Carles Marti
    Given a list of chemical symbols or atom indices it checks for every atom
462 b4b2f307 Carles Marti
    or any of its neighbor if it's a H and calls dissociate_h to try to carry
463 b4b2f307 Carles Marti
    out dissociation of that H. For atom indices, it checks both whether
464 b4b2f307 Carles Marti
    the atom index or its neighbors are H, for chemical symbols, it only checks
465 b4b2f307 Carles Marti
    if there is a neighbor H.
466 b4b2f307 Carles Marti
    @param slab_molec: The ase.Atoms object of the system adsorbate-slab.
467 c25aa299 Carles Marti
    @param h_donor: List of atom types or atom numbers that are H-donors.
468 c25aa299 Carles Marti
    @param h_acceptor: List of atom types or atom numbers that are H-acceptors.
469 c25aa299 Carles Marti
    @param num_atoms_slab: Number of atoms of the bare slab.
470 b4b2f307 Carles Marti
    @return:
471 b4b2f307 Carles Marti
    """
472 b4b2f307 Carles Marti
    from ase.neighborlist import natural_cutoffs, NeighborList
473 b4b2f307 Carles Marti
    molec = slab_molec[num_atoms_slab:]
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    cutoffs = natural_cutoffs(molec)
475 b4b2f307 Carles Marti
    nl = NeighborList(cutoffs, self_interaction=False, bothways=True)
476 b4b2f307 Carles Marti
    nl.update(molec)
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    disso_structs = []
478 c25aa299 Carles Marti
    for el in h_donor:
479 b4b2f307 Carles Marti
        if isinstance(el, int):
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            if molec[el].symbol == 'H':
481 b4b2f307 Carles Marti
                disso_struct = dissociate_h(slab_molec, el + num_atoms_slab,
482 c25aa299 Carles Marti
                                            num_atoms_slab, h_acceptor)
483 b4b2f307 Carles Marti
                if disso_struct is not None:
484 b4b2f307 Carles Marti
                    disso_structs.append(disso_struct)
485 b4b2f307 Carles Marti
            else:
486 b4b2f307 Carles Marti
                for neigh_idx in nl.get_neighbors(el)[0]:
487 b4b2f307 Carles Marti
                    if molec[neigh_idx].symbol == 'H':
488 b4b2f307 Carles Marti
                        disso_struct = dissociate_h(slab_molec, neigh_idx +
489 b4b2f307 Carles Marti
                                                    num_atoms_slab,
490 c25aa299 Carles Marti
                                                    num_atoms_slab, h_acceptor)
491 b4b2f307 Carles Marti
                        if disso_struct is not None:
492 b4b2f307 Carles Marti
                            disso_structs.append(disso_struct)
493 b4b2f307 Carles Marti
        else:
494 b4b2f307 Carles Marti
            for atom in molec:
495 b4b2f307 Carles Marti
                if atom.symbol.lower() == el.lower():
496 b4b2f307 Carles Marti
                    for neigh_idx in nl.get_neighbors(atom.index)[0]:
497 b4b2f307 Carles Marti
                        if molec[neigh_idx].symbol == 'H':
498 5261a07f Carles Marti
                            disso_struct = dissociate_h(slab_molec, neigh_idx
499 b4b2f307 Carles Marti
                                                        + num_atoms_slab,
500 c25aa299 Carles Marti
                                                        num_atoms_slab,
501 c25aa299 Carles Marti
                                                        h_acceptor)
502 b4b2f307 Carles Marti
                            if disso_struct is not None:
503 b4b2f307 Carles Marti
                                disso_structs.append(disso_struct)
504 b4b2f307 Carles Marti
    return disso_structs
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506 b4b2f307 Carles Marti
507 3ab0865c Carles Marti
def ads_euler(orig_molec, slab, ctr_coord, site_coord, num_pts,
508 b4b2f307 Carles Marti
              min_coll_height, coll_coeff, norm_vect, slab_nghbs, molec_nghbs,
509 c25aa299 Carles Marti
              h_donor, h_acceptor):
510 3ab0865c Carles Marti
    """Generates adsorbate-surface structures by sampling over Euler angles.
511 3ab0865c Carles Marti

512 3ab0865c Carles Marti
    This function generates a number of adsorbate-surface structures at
513 3ab0865c Carles Marti
    different orientations of the adsorbate sampled at multiple Euler (zxz)
514 3ab0865c Carles Marti
    angles.
515 5261a07f Carles Marti
    @param orig_molec: ase.Atoms object of the molecule to adsorb.
516 5261a07f Carles Marti
    @param slab: ase.Atoms object of the surface on which to adsorb the
517 5261a07f Carles Marti
        molecule.
518 3ab0865c Carles Marti
    @param ctr_coord: The coordinates of the molecule to use as adsorption
519 3ab0865c Carles Marti
        center.
520 3ab0865c Carles Marti
    @param site_coord: The coordinates of the surface on which to adsorb the
521 5261a07f Carles Marti
        molecule.
522 3ab0865c Carles Marti
    @param num_pts: Number on which to sample Euler angles.
523 5261a07f Carles Marti
    @param min_coll_height: The lowest height for which to detect a collision.
524 3ab0865c Carles Marti
    @param coll_coeff: The coefficient that multiplies the covalent radius of
525 3ab0865c Carles Marti
        atoms resulting in a distance that two atoms being closer to that is
526 3ab0865c Carles Marti
        considered as atomic collision.
527 3ab0865c Carles Marti
    @param norm_vect: The vector perpendicular to the surface.
528 3ab0865c Carles Marti
    @param slab_nghbs: Number of neigbors in the surface.
529 3ab0865c Carles Marti
    @param molec_nghbs: Number of neighbors in the molecule.
530 c25aa299 Carles Marti
    @param h_donor: List of atom types or atom numbers that are H-donors.
531 c25aa299 Carles Marti
    @param h_acceptor: List of atom types or atom numbers that are H-acceptors.
532 3ab0865c Carles Marti
    @return: list of ase.Atoms object conatining all the orientations of a given
533 5261a07f Carles Marti
        conformer.
534 3ab0865c Carles Marti
    """
535 3ab0865c Carles Marti
    from copy import deepcopy
536 cf40df1b Carles Marti
    slab_ads_list = []
537 d8d92cfb Carles Marti
    prealigned_molec = align_molec(orig_molec, ctr_coord, norm_vect)
538 3ab0865c Carles Marti
    # rotation around z
539 3ab0865c Carles Marti
    for alpha in np.arange(0, 360, 360 / num_pts):
540 3ab0865c Carles Marti
        # rotation around x'
541 3ab0865c Carles Marti
        for beta in np.arange(0, 180, 180 / num_pts):
542 3ab0865c Carles Marti
            # rotation around z'
543 3ab0865c Carles Marti
            for gamma in np.arange(0, 360, 360 / num_pts):
544 d8d92cfb Carles Marti
                molec = deepcopy(prealigned_molec)
545 3ab0865c Carles Marti
                molec.euler_rotate(alpha, beta, gamma, center=ctr_coord)
546 3ab0865c Carles Marti
                slab_molec, collision = correct_coll(molec, slab,
547 5fb01677 Carles Marti
                                                     ctr_coord, site_coord,
548 5fb01677 Carles Marti
                                                     num_pts, min_coll_height,
549 5fb01677 Carles Marti
                                                     norm_vect,
550 5fb01677 Carles Marti
                                                     slab_nghbs, molec_nghbs,
551 5fb01677 Carles Marti
                                                     coll_coeff)
552 cf40df1b Carles Marti
                if not collision and not any([np.allclose(slab_molec.positions,
553 cf40df1b Carles Marti
                                                          conf.positions)
554 cf40df1b Carles Marti
                                              for conf in slab_ads_list]):
555 cf40df1b Carles Marti
                    slab_ads_list.append(slab_molec)
556 cf40df1b Carles Marti
                    if h_donor is not False:
557 cf40df1b Carles Marti
                        slab_ads_list.extend(dissociation(slab_molec, h_donor,
558 cf40df1b Carles Marti
                                                          h_acceptor,
559 cf40df1b Carles Marti
                                                          len(slab)))
560 3ab0865c Carles Marti
561 cf40df1b Carles Marti
    return slab_ads_list
562 f3d1e601 Carles Marti
563 19727725 Carles Marti
def internal_rotate(molecule, surf, ctr1_mol, ctr2_mol, ctr3_mol, ctr1_surf,
564 19727725 Carles Marti
                    ctr2_surf, bond_vector, bond_angle_target,
565 19727725 Carles Marti
                    dihedral_angle_target=None, mol_dihedral_angle_target=None):
566 7dd94df7 Carles Marti
    """Performs translation and rotation of an adsorbate defined by an
567 7dd94df7 Carles Marti
    adsorption bond length, direction, angle and dihedral angle
568 7dd94df7 Carles Marti

569 7dd94df7 Carles Marti
    Carles modification of chemcat's transform_adsorbate to work with
570 7dd94df7 Carles Marti
    coordinates instead of ase.Atom
571 7dd94df7 Carles Marti
    Parameters:
572 7dd94df7 Carles Marti
        molecule (ase.Atoms): The molecule to adsorb.
573 7dd94df7 Carles Marti

574 7dd94df7 Carles Marti
        surf (ase.Atoms): The surface ontop of which to adsorb.
575 7dd94df7 Carles Marti

576 7dd94df7 Carles Marti
        ctr1_mol (int/list): The position of the adsorption center in the
577 7dd94df7 Carles Marti
        molecule that will be bound to the surface.
578 7dd94df7 Carles Marti

579 7dd94df7 Carles Marti
        ctr2_mol (int/list): The position of a second center of the
580 7dd94df7 Carles Marti
        adsorbate used to define the adsorption bond angle, and the dihedral
581 7dd94df7 Carles Marti
        adsorption angle.
582 7dd94df7 Carles Marti

583 7dd94df7 Carles Marti
        ctr3_mol (int/list): The position of a third center in the
584 7dd94df7 Carles Marti
        adsorbate used to define the adsorbate dihedral angle.
585 7dd94df7 Carles Marti

586 7dd94df7 Carles Marti
        ctr1_surf (int/list): The position of the site on the surface that
587 7dd94df7 Carles Marti
        will be bound to the molecule.
588 7dd94df7 Carles Marti

589 7dd94df7 Carles Marti
        ctr2_surf (int/list): The position of a second center of the
590 7dd94df7 Carles Marti
        surface used to define the dihedral adsorption angle.
591 7dd94df7 Carles Marti

592 7dd94df7 Carles Marti
        bond_vector (numpy.ndarray): The adsorption bond desired.
593 7dd94df7 Carles Marti
            Details: offset = vect(atom1_surf, atom1_mol)
594 7dd94df7 Carles Marti

595 7dd94df7 Carles Marti
        bond_angle_target (float or int): The adsorption bond angle desired (in
596 7dd94df7 Carles Marti
            degrees).
597 7dd94df7 Carles Marti
            Details: bond_angle_target = angle(atom1_surf, atom1_mol, atom2_mol)
598 7dd94df7 Carles Marti

599 7dd94df7 Carles Marti
        dihedral_angle_target (float or int): The dihedral adsorption angle
600 7dd94df7 Carles Marti
            desired (in degrees).
601 7dd94df7 Carles Marti
            Details: dihedral_angle_target = dihedral(atom2_surf, atom1_surf,
602 7dd94df7 Carles Marti
            atom1_mol, atom2_mol)
603 7dd94df7 Carles Marti
                The rotation vector is facing the adsorbate from the surface
604 7dd94df7 Carles Marti
                (i.e. counterclockwise rotation when facing the surface (i.e.
605 7dd94df7 Carles Marti
                view from top))
606 7dd94df7 Carles Marti

607 7dd94df7 Carles Marti
        mol_dihedral_angle_target (float or int): The adsorbate dihedral angle
608 7dd94df7 Carles Marti
            desired (in degrees).
609 7dd94df7 Carles Marti
            Details: mol_dihedral_angle_target = dihedral(atom1_surf, atom1_mol,
610 7dd94df7 Carles Marti
            atom2_mol, atom3_mol)
611 7dd94df7 Carles Marti
                The rotation vector is facing atom2_mol from atom1_mol
612 7dd94df7 Carles Marti

613 7dd94df7 Carles Marti
    Returns:
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        None (the `molecule` object is modified in-place)
615 7dd94df7 Carles Marti
    """
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    vect_surf = get_atom_coords(surf, ctr2_surf) - get_atom_coords(surf,
617 7dd94df7 Carles Marti
                                                                   ctr1_surf)
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    vect_inter = get_atom_coords(molecule, ctr1_mol) \
619 d6da8693 Carles Marti
        - get_atom_coords(surf, ctr1_surf)
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    vect_mol = get_atom_coords(molecule, ctr2_mol) - get_atom_coords(molecule,
621 7dd94df7 Carles Marti
                                                                     ctr1_mol)
622 7dd94df7 Carles Marti
    vect2_mol = get_atom_coords(molecule, ctr3_mol) - get_atom_coords(molecule,
623 7dd94df7 Carles Marti
                                                                      ctr2_mol)
624 7dd94df7 Carles Marti
625 7dd94df7 Carles Marti
    # Check if dihedral angles can be defined
626 7dd94df7 Carles Marti
    do_dihedral = dihedral_angle_target is not None
627 7dd94df7 Carles Marti
    do_mol_dihedral = mol_dihedral_angle_target is not None
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    dihedral_use_mol2 = False
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    # Check if vect_surf and bond_vector are aligned
630 8c519241 Carles Marti
    if np.allclose(np.cross(vect_surf, bond_vector), 0):
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        do_dihedral = False
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    # Check if requested bond angle is not flat
633 7dd94df7 Carles Marti
    if np.isclose((bond_angle_target + 90) % 180 - 90, 0):
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        do_mol_dihedral = False
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        dihedral_use_mol2 = True
636 7dd94df7 Carles Marti
    # Check if vect_mol and vect2_mol are not aligned
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    if np.allclose(np.cross(vect_mol, vect2_mol), 0):
638 7dd94df7 Carles Marti
        do_mol_dihedral = False
639 7dd94df7 Carles Marti
640 7dd94df7 Carles Marti
    ###########################
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    #       Translation       #
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    ###########################
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    # Compute and apply translation of adsorbate
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    translation = bond_vector - vect_inter
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    molecule.translate(translation)
647 7dd94df7 Carles Marti
648 7dd94df7 Carles Marti
    # Update adsorption bond
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    vect_inter = get_atom_coords(molecule, ctr1_mol) - \
650 d6da8693 Carles Marti
        get_atom_coords(surf, ctr1_surf)
651 7dd94df7 Carles Marti
652 7dd94df7 Carles Marti
    # Check if translation was successful
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    if np.allclose(vect_inter, bond_vector):
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        pass  # print("Translation successfully applied (error: ~ {:.5g} unit "
655 7dd94df7 Carles Marti
        # "length)".format(np.linalg.norm(vect_inter - bond_vector)))
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    else:
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        err = 'An unknown error occured during the translation'
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        logger.error(err)
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        raise AssertionError(err)
660 7dd94df7 Carles Marti
661 7dd94df7 Carles Marti
    ###########################
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    #   Bond angle rotation   #
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    ###########################
664 7dd94df7 Carles Marti
665 7dd94df7 Carles Marti
    # Compute rotation vector
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    rotation_vector = np.cross(-vect_inter, vect_mol)
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    if np.allclose(rotation_vector, 0, atol=1e-5):
668 7dd94df7 Carles Marti
        # If molecular bonds are aligned, any vector orthogonal to vect_inter
669 7dd94df7 Carles Marti
        # can be used Such vector can be found as the orthogonal rejection of
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        # either X-axis, Y-axis or Z-axis onto vect_inter (since they cannot
671 7dd94df7 Carles Marti
        # be all aligned)
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        non_aligned_vector = np.zeros(3)
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        # Select the most orthogonal axis (lowest dot product):
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        non_aligned_vector[np.argmin(np.abs(vect_inter))] = 1
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        rotation_vector = non_aligned_vector - np.dot(non_aligned_vector,
676 7dd94df7 Carles Marti
                                                      vect_inter) / np.dot(
677 7dd94df7 Carles Marti
            vect_inter, vect_inter) * vect_inter
678 7dd94df7 Carles Marti
679 7dd94df7 Carles Marti
    # Retrieve current bond angle
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    bond_angle_ini = get_vect_angle(-vect_inter, vect_mol, rotation_vector)
681 7dd94df7 Carles Marti
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    # Apply rotation to reach desired bond_angle
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    molecule.rotate(bond_angle_target - bond_angle_ini, v=rotation_vector,
684 7dd94df7 Carles Marti
                    center=get_atom_coords(molecule, ctr1_mol))
685 7dd94df7 Carles Marti
686 7dd94df7 Carles Marti
    # Update molecular bonds
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    vect_mol = get_atom_coords(molecule, ctr2_mol) - get_atom_coords(molecule,
688 7dd94df7 Carles Marti
                                                                     ctr1_mol)
689 7dd94df7 Carles Marti
    vect2_mol = get_atom_coords(molecule, ctr3_mol) - get_atom_coords(molecule,
690 7dd94df7 Carles Marti
                                                                      ctr2_mol)
691 7dd94df7 Carles Marti
692 7dd94df7 Carles Marti
    # Check if rotation was successful
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    bond_angle = get_vect_angle(-vect_inter, vect_mol)
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    if np.isclose((bond_angle - bond_angle_target + 90) % 180 - 90, 0,
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                  atol=1e-3) and np.allclose(get_atom_coords(molecule, ctr1_mol)
696 7dd94df7 Carles Marti
                                             - get_atom_coords(surf,
697 7dd94df7 Carles Marti
                                                               ctr1_surf),
698 7dd94df7 Carles Marti
                                             vect_inter):
699 7dd94df7 Carles Marti
        pass  # print("Rotation successfully applied (error: {:.5f}°)".format(
700 7dd94df7 Carles Marti
        # (bond_angle - bond_angle_target + 90) % 180 - 90))
701 7dd94df7 Carles Marti
    else:
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        err = 'An unknown error occured during the rotation'
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        logger.error(err)
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        raise AssertionError(err)
705 7dd94df7 Carles Marti
706 7dd94df7 Carles Marti
    ###########################
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    # Dihedral angle rotation #
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    ###########################
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710 7dd94df7 Carles Marti
    # Perform dihedral rotation if possible
711 7dd94df7 Carles Marti
    if do_dihedral:
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        # Retrieve current dihedral angle (by computing the angle between the
713 7dd94df7 Carles Marti
        # vector rejection of vect_surf and vect_mol onto vect_inter)
714 7dd94df7 Carles Marti
        vect_inter_inner = np.dot(vect_inter, vect_inter)
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        vect_surf_reject = vect_surf - np.dot(vect_surf, vect_inter) / \
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            vect_inter_inner * vect_inter
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        if dihedral_use_mol2:
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            vect_mol_reject = vect2_mol - np.dot(vect2_mol, vect_inter) / \
719 7dd94df7 Carles Marti
                              vect_inter_inner * vect_inter
720 7dd94df7 Carles Marti
        else:
721 7dd94df7 Carles Marti
            vect_mol_reject = vect_mol - np.dot(vect_mol, vect_inter) / \
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                              vect_inter_inner * vect_inter
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        dihedral_angle_ini = get_vect_angle(vect_surf_reject, vect_mol_reject,
724 7dd94df7 Carles Marti
                                            vect_inter)
725 7dd94df7 Carles Marti
726 7dd94df7 Carles Marti
        # Apply dihedral rotation along vect_inter
727 7dd94df7 Carles Marti
        molecule.rotate(dihedral_angle_target - dihedral_angle_ini,
728 7dd94df7 Carles Marti
                        v=vect_inter, center=get_atom_coords(molecule,
729 7dd94df7 Carles Marti
                                                             ctr1_mol))
730 7dd94df7 Carles Marti
731 7dd94df7 Carles Marti
        # Update molecular bonds
732 7dd94df7 Carles Marti
        vect_mol = get_atom_coords(molecule, ctr2_mol) - \
733 d6da8693 Carles Marti
            get_atom_coords(molecule, ctr1_mol)
734 7dd94df7 Carles Marti
        vect2_mol = get_atom_coords(molecule, ctr3_mol) - \
735 d6da8693 Carles Marti
            get_atom_coords(molecule, ctr2_mol)
736 7dd94df7 Carles Marti
737 7dd94df7 Carles Marti
        # Check if rotation was successful
738 7dd94df7 Carles Marti
        # Check dihedral rotation
739 7dd94df7 Carles Marti
        if dihedral_use_mol2:
740 7dd94df7 Carles Marti
            vect_mol_reject = vect2_mol - np.dot(vect2_mol, vect_inter) / \
741 7dd94df7 Carles Marti
                              vect_inter_inner * vect_inter
742 7dd94df7 Carles Marti
        else:
743 7dd94df7 Carles Marti
            vect_mol_reject = vect_mol - np.dot(vect_mol, vect_inter) / \
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                              vect_inter_inner * vect_inter
745 7dd94df7 Carles Marti
        dihedral_angle = get_vect_angle(vect_surf_reject, vect_mol_reject,
746 7dd94df7 Carles Marti
                                        vect_inter)
747 7dd94df7 Carles Marti
        # Check bond rotation is unmodified
748 7dd94df7 Carles Marti
        bond_angle = get_vect_angle(-vect_inter, vect_mol)
749 7dd94df7 Carles Marti
        if np.isclose((dihedral_angle - dihedral_angle_target + 90) % 180 - 90,
750 5261a07f Carles Marti
                      0, atol=1e-3) \
751 5261a07f Carles Marti
                and np.isclose((bond_angle - bond_angle_target + 90) %
752 5261a07f Carles Marti
                               180 - 90, 0, atol=1e-5) \
753 c25aa299 Carles Marti
                and np.allclose(get_atom_coords(molecule, ctr1_mol)
754 c25aa299 Carles Marti
                                - get_atom_coords(surf, ctr1_surf),
755 c25aa299 Carles Marti
                                vect_inter):
756 7dd94df7 Carles Marti
            pass  # print( "Dihedral rotation successfully applied (error: {
757 7dd94df7 Carles Marti
            # :.5f}°)".format((dihedral_angle - dihedral_angle_target + 90) %
758 7dd94df7 Carles Marti
            # 180 - 90))
759 7dd94df7 Carles Marti
        else:
760 7dd94df7 Carles Marti
            err = 'An unknown error occured during the dihedral rotation'
761 7dd94df7 Carles Marti
            logger.error(err)
762 7dd94df7 Carles Marti
            raise AssertionError(err)
763 7dd94df7 Carles Marti
764 7dd94df7 Carles Marti
    #####################################
765 7dd94df7 Carles Marti
    # Adsorbate dihedral angle rotation #
766 7dd94df7 Carles Marti
    #####################################
767 7dd94df7 Carles Marti
768 7dd94df7 Carles Marti
    # Perform adsorbate dihedral rotation if possible
769 7dd94df7 Carles Marti
    if do_mol_dihedral:
770 7dd94df7 Carles Marti
        # Retrieve current adsorbate dihedral angle (by computing the angle
771 7dd94df7 Carles Marti
        # between the orthogonal rejection of vect_inter and vect2_mol onto
772 7dd94df7 Carles Marti
        # vect_mol)
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        vect_mol_inner = np.dot(vect_mol, vect_mol)
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        bond_inter_reject = -vect_inter - np.dot(-vect_inter, vect_mol) / \
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            vect_mol_inner * vect_mol
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        bond2_mol_reject = vect2_mol - np.dot(vect2_mol, vect_mol) / \
777 5261a07f Carles Marti
            vect_mol_inner * vect_mol
778 7dd94df7 Carles Marti
        dihedral_angle_ini = get_vect_angle(bond_inter_reject,
779 7dd94df7 Carles Marti
                                            bond2_mol_reject, vect_mol)
780 7dd94df7 Carles Marti
781 7dd94df7 Carles Marti
        # Apply dihedral rotation along vect_mol
782 7dd94df7 Carles Marti
        molecule.rotate(mol_dihedral_angle_target - dihedral_angle_ini,
783 7dd94df7 Carles Marti
                        v=vect_mol, center=get_atom_coords(molecule, ctr1_mol))
784 7dd94df7 Carles Marti
785 7dd94df7 Carles Marti
        # Update molecular bonds
786 7dd94df7 Carles Marti
        vect_mol = get_atom_coords(molecule, ctr2_mol) \
787 5261a07f Carles Marti
            - get_atom_coords(molecule, ctr1_mol)
788 7dd94df7 Carles Marti
        vect2_mol = get_atom_coords(molecule, ctr3_mol) \
789 5261a07f Carles Marti
            - get_atom_coords(molecule, ctr2_mol)
790 7dd94df7 Carles Marti
791 7dd94df7 Carles Marti
        # Check if rotation was successful
792 7dd94df7 Carles Marti
        # Check adsorbate dihedral rotation
793 7dd94df7 Carles Marti
        vect_mol_inner = np.dot(vect_mol, vect_mol)
794 7dd94df7 Carles Marti
        bond2_mol_reject = vect2_mol - np.dot(vect2_mol, vect_mol) / \
795 5261a07f Carles Marti
            vect_mol_inner * vect_mol
796 7dd94df7 Carles Marti
        mol_dihedral_angle = get_vect_angle(bond_inter_reject,
797 7dd94df7 Carles Marti
                                            bond2_mol_reject, vect_mol)
798 7dd94df7 Carles Marti
        # Check dihedral rotation
799 7dd94df7 Carles Marti
        vect_inter_inner = np.dot(vect_inter, vect_inter)
800 7dd94df7 Carles Marti
        vect_surf_reject = vect_surf - np.dot(vect_surf, vect_inter) / \
801 5261a07f Carles Marti
            vect_inter_inner * vect_inter
802 7dd94df7 Carles Marti
        vect_mol_reject = vect_mol - np.dot(vect_mol, vect_inter) / \
803 5261a07f Carles Marti
            vect_inter_inner * vect_inter
804 7dd94df7 Carles Marti
        dihedral_angle = get_vect_angle(vect_surf_reject, vect_mol_reject,
805 7dd94df7 Carles Marti
                                        vect_inter)
806 7dd94df7 Carles Marti
        # Check bond rotation is unmodified
807 7dd94df7 Carles Marti
        bond_angle = get_vect_angle(-vect_inter, vect_mol)
808 7dd94df7 Carles Marti
        if np.isclose((mol_dihedral_angle - mol_dihedral_angle_target + 90) %
809 7dd94df7 Carles Marti
                      180 - 90, 0, atol=1e-3) \
810 7dd94df7 Carles Marti
                and np.isclose((dihedral_angle -
811 7dd94df7 Carles Marti
                                dihedral_angle_target + 90) % 180 - 90, 0,
812 7dd94df7 Carles Marti
                               atol=1e-5) \
813 7dd94df7 Carles Marti
                and np.isclose((bond_angle - bond_angle_target + 90) % 180 - 90,
814 7dd94df7 Carles Marti
                               0, atol=1e-5) \
815 7dd94df7 Carles Marti
                and np.allclose(get_atom_coords(molecule, ctr1_mol) -
816 7dd94df7 Carles Marti
                                get_atom_coords(surf, ctr1_surf),
817 7dd94df7 Carles Marti
                                vect_inter):
818 7dd94df7 Carles Marti
            pass  # print(
819 7dd94df7 Carles Marti
            # "Adsorbate dihedral rotation successfully applied (error:
820 7dd94df7 Carles Marti
            # {:.5f}°)".format((mol_dihedral_angle - mol_dihedral_angle_target
821 7dd94df7 Carles Marti
            # + 90) % 180 - 90))
822 7dd94df7 Carles Marti
        else:
823 7dd94df7 Carles Marti
            err = 'An unknown error occured during the adsorbate dihedral ' \
824 7dd94df7 Carles Marti
                  'rotation'
825 7dd94df7 Carles Marti
            logger.error(err)
826 7dd94df7 Carles Marti
            raise AssertionError(err)
827 7dd94df7 Carles Marti
828 7dd94df7 Carles Marti
829 19727725 Carles Marti
def ads_internal(orig_molec, slab, ctr1_mol, ctr2_mol, ctr3_mol, ctr1_surf,
830 19727725 Carles Marti
                 ctr2_surf, num_pts, min_coll_height, coll_coeff, norm_vect,
831 19727725 Carles Marti
                 slab_nghbs, molec_nghbs, h_donor, h_acceptor, max_hel):
832 5261a07f Carles Marti
    """Generates adsorbate-surface structures by sampling over chemcat angles.
833 5261a07f Carles Marti

834 5261a07f Carles Marti
    @param orig_molec: ase.Atoms object of the molecule to adsorb (adsorbate).
835 5261a07f Carles Marti
    @param slab: ase.Atoms object of the surface on which to adsorb the molecule
836 5261a07f Carles Marti
    @param ctr1_mol: The index/es of the center in the adsorbate to use as
837 5261a07f Carles Marti
        adsorption center.
838 5261a07f Carles Marti
    @param ctr2_mol: The index/es of the center in the adsorbate to use for the
839 5261a07f Carles Marti
        definition of the surf-adsorbate angle, surf-adsorbate dihedral angle
840 5261a07f Carles Marti
        and adsorbate dihedral angle.
841 5261a07f Carles Marti
    @param ctr3_mol: The index/es of the center in the adsorbate to use for the
842 5261a07f Carles Marti
        definition of the adsorbate dihedral angle.
843 5261a07f Carles Marti
    @param ctr1_surf: The index/es of the center in the surface to use as
844 5261a07f Carles Marti
        adsorption center.
845 5261a07f Carles Marti
    @param ctr2_surf: The index/es of the center in the surface to use for the
846 5261a07f Carles Marti
        definition of the surf-adsorbate dihedral angle.
847 5261a07f Carles Marti
    @param num_pts: Number on which to sample Euler angles.
848 5261a07f Carles Marti
    @param min_coll_height: The lowest height for which to detect a collision
849 5261a07f Carles Marti
    @param coll_coeff: The coefficient that multiplies the covalent radius of
850 5261a07f Carles Marti
        atoms resulting in a distance that two atoms being closer to that is
851 5261a07f Carles Marti
        considered as atomic collision.
852 5261a07f Carles Marti
    @param norm_vect: The vector perpendicular to the surface.
853 5261a07f Carles Marti
    @param slab_nghbs: Number of neigbors in the surface.
854 5261a07f Carles Marti
    @param molec_nghbs: Number of neighbors in the molecule.
855 c25aa299 Carles Marti
    @param h_donor: List of atom types or atom numbers that are H-donors.
856 c25aa299 Carles Marti
    @param h_acceptor: List of atom types or atom numbers that are H-acceptors.
857 c25aa299 Carles Marti
    @param max_hel: Maximum value for sampling the helicopter
858 5261a07f Carles Marti
        (surf-adsorbate dihedral) angle.
859 5261a07f Carles Marti
    @return: list of ase.Atoms object conatining all the orientations of a given
860 5261a07f Carles Marti
        conformer.
861 5261a07f Carles Marti
    """
862 7dd94df7 Carles Marti
    from copy import deepcopy
863 cf40df1b Carles Marti
    slab_ads_list = []
864 9dca524b Carles Marti
    # Rotation over bond angle
865 9dca524b Carles Marti
    for alpha in np.arange(90, 180+1, 90 / max(1, num_pts-1))[:num_pts]:
866 7dd94df7 Carles Marti
        # Rotation over surf-adsorbate dihedral angle
867 c25aa299 Carles Marti
        for beta in np.arange(0, max_hel, max_hel / num_pts):
868 7dd94df7 Carles Marti
            # Rotation over adsorbate bond dihedral angle
869 9dca524b Carles Marti
            for gamma in np.arange(90, 270+1, 180/max(1, num_pts-1))[:num_pts]:
870 9dca524b Carles Marti
                # Avoid duplicates as gamma rotation has no effect on plane
871 9dca524b Carles Marti
                # angles.
872 9dca524b Carles Marti
                if alpha == 180 and gamma > 90:
873 9dca524b Carles Marti
                    continue
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                new_molec = deepcopy(orig_molec)
875 19727725 Carles Marti
                internal_rotate(new_molec, slab, ctr1_mol, ctr2_mol, ctr3_mol,
876 19727725 Carles Marti
                                ctr1_surf, ctr2_surf, norm_vect, alpha,
877 19727725 Carles Marti
                                beta, gamma)
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                site_coords = get_atom_coords(slab, ctr1_surf)
879 7dd94df7 Carles Marti
                ctr_coords = get_atom_coords(new_molec, ctr1_mol)
880 7dd94df7 Carles Marti
                slab_molec, collision = correct_coll(new_molec, slab,
881 7dd94df7 Carles Marti
                                                     ctr_coords, site_coords,
882 7dd94df7 Carles Marti
                                                     num_pts, min_coll_height,
883 7dd94df7 Carles Marti
                                                     norm_vect, slab_nghbs,
884 e8bebcca Carles Marti
                                                     molec_nghbs, coll_coeff)
885 cf40df1b Carles Marti
                if not collision and \
886 cf40df1b Carles Marti
                        not any([np.allclose(slab_molec.positions,
887 cf40df1b Carles Marti
                                             conf.positions)
888 cf40df1b Carles Marti
                                 for conf in slab_ads_list]):
889 cf40df1b Carles Marti
                    slab_ads_list.append(slab_molec)
890 cf40df1b Carles Marti
                    if h_donor is not False:
891 cf40df1b Carles Marti
                        slab_ads_list.extend(dissociation(slab_molec, h_donor,
892 cf40df1b Carles Marti
                                                          h_acceptor,
893 cf40df1b Carles Marti
                                                          len(slab)))
894 cf40df1b Carles Marti
895 cf40df1b Carles Marti
    return slab_ads_list
896 f3d1e601 Carles Marti
897 f3d1e601 Carles Marti
898 7dd94df7 Carles Marti
def adsorb_confs(conf_list, surf, inp_vars):
899 a5cc42ff Carles Marti
    """Generates a number of adsorbate-surface structure coordinates.
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    Given a list of conformers, a surface, a list of atom indices (or list of
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    list of indices) of both the surface and the adsorbate, it generates a
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    number of adsorbate-surface structures for every possible combination of
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    them at different orientations.
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    @param conf_list: list of ase.Atoms of the different conformers
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    @param surf: the ase.Atoms object of the surface
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    @param inp_vars: Calculation parameters from input file.
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    @return: list of ase.Atoms for the adsorbate-surface structures
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    """
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    from ase.neighborlist import natural_cutoffs, neighbor_list
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    molec_ctrs = inp_vars['molec_ctrs']
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    sites = inp_vars['sites']
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    angles = inp_vars['set_angles']
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    num_pts = inp_vars['sample_points_per_angle']
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    inp_norm_vect = inp_vars['surf_norm_vect']
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    min_coll_height = inp_vars['min_coll_height']
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    coll_coeff = inp_vars['collision_threshold']
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    h_donor = inp_vars['h_donor']
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    h_acceptor = inp_vars['h_acceptor']
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    if inp_vars['pbc_cell'] is not False:
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        surf.set_pbc(True)
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        surf.set_cell(inp_vars['pbc_cell'])
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    surf_ads_list = []
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    sites_coords = get_atom_coords(surf, sites)
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    if coll_coeff is not False:
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        surf_cutoffs = natural_cutoffs(surf, mult=coll_coeff)
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        surf_nghbs = len(neighbor_list("i", surf, surf_cutoffs))
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    else:
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        surf_nghbs = 0
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    for i, conf in enumerate(conf_list):
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        molec_ctr_coords = get_atom_coords(conf, molec_ctrs)
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        if inp_vars['pbc_cell'] is not False:
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            conf.set_pbc(True)
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            conf.set_cell(inp_vars['pbc_cell'])
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        if coll_coeff is not False:
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            conf_cutoffs = natural_cutoffs(conf, mult=coll_coeff)
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            molec_nghbs = len(neighbor_list("i", conf, conf_cutoffs))
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        else:
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            molec_nghbs = 0
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        for s, site in enumerate(sites_coords):
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            if isinstance(inp_norm_vect, str) and inp_norm_vect == 'auto':
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                norm_vect = compute_norm_vect(surf, sites[s],
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                                              inp_vars['pbc_cell'])
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            else:
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                norm_vect = inp_norm_vect
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            for c, ctr in enumerate(molec_ctr_coords):
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                if angles == 'euler':
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                    surf_ads_list.extend(ads_euler(conf, surf, ctr, site,
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                                                   num_pts, min_coll_height,
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                                                   coll_coeff, norm_vect,
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                                                   surf_nghbs, molec_nghbs,
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                                                   h_donor, h_acceptor))
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                elif angles == 'chemcat':
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                    mol_ctr1 = molec_ctrs[c]
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                    mol_ctr2 = inp_vars["molec_ctrs2"][c]
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                    mol_ctr3 = inp_vars["molec_ctrs3"][c]
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                    surf_ctr1 = sites[s]
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                    surf_ctr2 = inp_vars["surf_ctrs2"][s]
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                    max_h = inp_vars["max_helic_angle"]
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                    surf_ads_list.extend(ads_chemcat(conf, surf, mol_ctr1,
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                                                     mol_ctr2, mol_ctr3,
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                                                     surf_ctr1, surf_ctr2,
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                                                     num_pts, min_coll_height,
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                                                     coll_coeff, norm_vect,
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                                                     surf_nghbs, molec_nghbs,
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                                                     h_donor, h_acceptor,
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                                                     max_h))
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    return surf_ads_list
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def run_screening(inp_vars):
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    """Carries out the screening of adsorbate structures on a surface.
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    @param inp_vars: Calculation parameters from input file.
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    """
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    import os
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    import random
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    from modules.formats import collect_coords, adapt_format
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    from modules.calculation import run_calc, check_finished_calcs
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    logger.info('Carrying out procedures for the screening of adsorbate-surface'
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                ' structures.')
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    if inp_vars['use_molec_file']:
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        selected_confs = [adapt_format('ase', inp_vars['use_molec_file'])]
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        logger.info(f"Using '{inp_vars['use_molec_file']}' as only conformer.")
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    else:
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        if not os.path.isdir("isolated"):
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            err = "'isolated' directory not found. It is needed in order to " \
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                  "carry out the screening of structures to be adsorbed"
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            logger.error(err)
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            raise FileNotFoundError(err)
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        correct_calcs, failed_calcs = check_finished_calcs('isolated',
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                                                           inp_vars['code'])
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        if not correct_calcs:
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            err_msg = "No calculations on 'isolated' finished normally."
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            logger.error(err_msg)
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            raise FileNotFoundError(err_msg)
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        logger.info(f"Found {len(correct_calcs)} structures of isolated "
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                    f"conformers whose calculation finished normally.")
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        if len(failed_calcs) != 0:
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            logger.warning(
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                f"Found {len(failed_calcs)} calculations more that "
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                f"did not finish normally: {failed_calcs}. \n"
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                f"Using only the ones that finished normally: "
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                f"{correct_calcs}.")
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        conformer_atoms_list = collect_coords(correct_calcs, inp_vars['code'],
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                                              'isolated',
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                                              inp_vars['special_atoms'])
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        selected_confs = select_confs(conformer_atoms_list, correct_calcs,
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                                      inp_vars['select_magns'],
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                                      inp_vars['confs_per_magn'],
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                                      inp_vars['code'])
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    surf = adapt_format('ase', inp_vars['surf_file'], inp_vars['special_atoms'])
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    surf_ads_list = adsorb_confs(selected_confs, surf, inp_vars)
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    if len(surf_ads_list) > inp_vars['max_structures']:
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        surf_ads_list = random.sample(surf_ads_list, inp_vars['max_structures'])
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    logger.info(f'Generated {len(surf_ads_list)} adsorbate-surface atomic '
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                f'configurations to carry out a calculation of.')
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    run_calc('screening', inp_vars, surf_ads_list)
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    logger.info('Finished the procedures for the screening of adsorbate-surface'
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                ' structures section.')