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dockonsurf / modules / screening.py @ fe91ddb2

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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
325 5f3f4b69 Carles Marti
        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.
331 5f3f4b69 Carles Marti
    @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],
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                     [-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 " \
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                      "'surf_norm_vect' to be one of the x, y or z axes. "
342 e8bebcca Carles Marti
            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:
357 5fb01677 Carles Marti
            return True
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359 e8bebcca Carles Marti
    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,
364 e8bebcca Carles Marti
                 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
371 e8bebcca Carles Marti
        molecule
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    @param ctr_coord: The coordinates of the molecule to use as adsorption
373 e8bebcca Carles Marti
        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
383 e8bebcca Carles Marti
        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
386 e8bebcca Carles Marti
        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
397 e8bebcca Carles Marti
        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)
402 e8bebcca Carles Marti
        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
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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)
427 b4b2f307 Carles Marti
    cutoffs = len(slab_molec) * [neigh_cutoff]
428 c25aa299 Carles Marti
    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:]
474 b4b2f307 Carles Marti
    cutoffs = natural_cutoffs(molec)
475 b4b2f307 Carles Marti
    nl = NeighborList(cutoffs, self_interaction=False, bothways=True)
476 b4b2f307 Carles Marti
    nl.update(molec)
477 b4b2f307 Carles Marti
    disso_structs = []
478 c25aa299 Carles Marti
    for el in h_donor:
479 b4b2f307 Carles Marti
        if isinstance(el, int):
480 b4b2f307 Carles Marti
            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 fe91ddb2 Carles Marti
              h_donor, h_acceptor, height):
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 fe91ddb2 Carles Marti
    @param height: Height on which to try adsorption.
533 3ab0865c Carles Marti
    @return: list of ase.Atoms object conatining all the orientations of a given
534 5261a07f Carles Marti
        conformer.
535 3ab0865c Carles Marti
    """
536 3ab0865c Carles Marti
    from copy import deepcopy
537 cf40df1b Carles Marti
    slab_ads_list = []
538 d8d92cfb Carles Marti
    prealigned_molec = align_molec(orig_molec, ctr_coord, norm_vect)
539 3ab0865c Carles Marti
    # rotation around z
540 3ab0865c Carles Marti
    for alpha in np.arange(0, 360, 360 / num_pts):
541 3ab0865c Carles Marti
        # rotation around x'
542 3ab0865c Carles Marti
        for beta in np.arange(0, 180, 180 / num_pts):
543 3ab0865c Carles Marti
            # rotation around z'
544 3ab0865c Carles Marti
            for gamma in np.arange(0, 360, 360 / num_pts):
545 5864c86e Carles Marti
                if beta == 0 and gamma > 0:
546 5864c86e Carles Marti
                    continue
547 d8d92cfb Carles Marti
                molec = deepcopy(prealigned_molec)
548 3ab0865c Carles Marti
                molec.euler_rotate(alpha, beta, gamma, center=ctr_coord)
549 3ab0865c Carles Marti
                slab_molec, collision = correct_coll(molec, slab,
550 5fb01677 Carles Marti
                                                     ctr_coord, site_coord,
551 5fb01677 Carles Marti
                                                     num_pts, min_coll_height,
552 5fb01677 Carles Marti
                                                     norm_vect,
553 5fb01677 Carles Marti
                                                     slab_nghbs, molec_nghbs,
554 fe91ddb2 Carles Marti
                                                     coll_coeff, height)
555 cf40df1b Carles Marti
                if not collision and not any([np.allclose(slab_molec.positions,
556 cf40df1b Carles Marti
                                                          conf.positions)
557 cf40df1b Carles Marti
                                              for conf in slab_ads_list]):
558 cf40df1b Carles Marti
                    slab_ads_list.append(slab_molec)
559 cf40df1b Carles Marti
                    if h_donor is not False:
560 cf40df1b Carles Marti
                        slab_ads_list.extend(dissociation(slab_molec, h_donor,
561 cf40df1b Carles Marti
                                                          h_acceptor,
562 cf40df1b Carles Marti
                                                          len(slab)))
563 3ab0865c Carles Marti
564 cf40df1b Carles Marti
    return slab_ads_list
565 f3d1e601 Carles Marti
566 d68dd4ad Carles Marti
567 19727725 Carles Marti
def internal_rotate(molecule, surf, ctr1_mol, ctr2_mol, ctr3_mol, ctr1_surf,
568 19727725 Carles Marti
                    ctr2_surf, bond_vector, bond_angle_target,
569 19727725 Carles Marti
                    dihedral_angle_target=None, mol_dihedral_angle_target=None):
570 7dd94df7 Carles Marti
    """Performs translation and rotation of an adsorbate defined by an
571 7dd94df7 Carles Marti
    adsorption bond length, direction, angle and dihedral angle
572 7dd94df7 Carles Marti

573 7dd94df7 Carles Marti
    Carles modification of chemcat's transform_adsorbate to work with
574 7dd94df7 Carles Marti
    coordinates instead of ase.Atom
575 7dd94df7 Carles Marti
    Parameters:
576 7dd94df7 Carles Marti
        molecule (ase.Atoms): The molecule to adsorb.
577 7dd94df7 Carles Marti

578 7dd94df7 Carles Marti
        surf (ase.Atoms): The surface ontop of which to adsorb.
579 7dd94df7 Carles Marti

580 7dd94df7 Carles Marti
        ctr1_mol (int/list): The position of the adsorption center in the
581 7dd94df7 Carles Marti
        molecule that will be bound to the surface.
582 7dd94df7 Carles Marti

583 7dd94df7 Carles Marti
        ctr2_mol (int/list): The position of a second center of the
584 7dd94df7 Carles Marti
        adsorbate used to define the adsorption bond angle, and the dihedral
585 7dd94df7 Carles Marti
        adsorption angle.
586 7dd94df7 Carles Marti

587 7dd94df7 Carles Marti
        ctr3_mol (int/list): The position of a third center in the
588 7dd94df7 Carles Marti
        adsorbate used to define the adsorbate dihedral angle.
589 7dd94df7 Carles Marti

590 7dd94df7 Carles Marti
        ctr1_surf (int/list): The position of the site on the surface that
591 7dd94df7 Carles Marti
        will be bound to the molecule.
592 7dd94df7 Carles Marti

593 7dd94df7 Carles Marti
        ctr2_surf (int/list): The position of a second center of the
594 7dd94df7 Carles Marti
        surface used to define the dihedral adsorption angle.
595 7dd94df7 Carles Marti

596 7dd94df7 Carles Marti
        bond_vector (numpy.ndarray): The adsorption bond desired.
597 7dd94df7 Carles Marti
            Details: offset = vect(atom1_surf, atom1_mol)
598 7dd94df7 Carles Marti

599 7dd94df7 Carles Marti
        bond_angle_target (float or int): The adsorption bond angle desired (in
600 7dd94df7 Carles Marti
            degrees).
601 7dd94df7 Carles Marti
            Details: bond_angle_target = angle(atom1_surf, atom1_mol, atom2_mol)
602 7dd94df7 Carles Marti

603 7dd94df7 Carles Marti
        dihedral_angle_target (float or int): The dihedral adsorption angle
604 7dd94df7 Carles Marti
            desired (in degrees).
605 7dd94df7 Carles Marti
            Details: dihedral_angle_target = dihedral(atom2_surf, atom1_surf,
606 7dd94df7 Carles Marti
            atom1_mol, atom2_mol)
607 7dd94df7 Carles Marti
                The rotation vector is facing the adsorbate from the surface
608 7dd94df7 Carles Marti
                (i.e. counterclockwise rotation when facing the surface (i.e.
609 7dd94df7 Carles Marti
                view from top))
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        mol_dihedral_angle_target (float or int): The adsorbate dihedral angle
612 7dd94df7 Carles Marti
            desired (in degrees).
613 7dd94df7 Carles Marti
            Details: mol_dihedral_angle_target = dihedral(atom1_surf, atom1_mol,
614 7dd94df7 Carles Marti
            atom2_mol, atom3_mol)
615 7dd94df7 Carles Marti
                The rotation vector is facing atom2_mol from atom1_mol
616 7dd94df7 Carles Marti

617 7dd94df7 Carles Marti
    Returns:
618 7dd94df7 Carles Marti
        None (the `molecule` object is modified in-place)
619 7dd94df7 Carles Marti
    """
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    vect_surf = get_atom_coords(surf, ctr2_surf) - get_atom_coords(surf,
621 7dd94df7 Carles Marti
                                                                   ctr1_surf)
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    vect_inter = get_atom_coords(molecule, ctr1_mol) \
623 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,
625 7dd94df7 Carles Marti
                                                                     ctr1_mol)
626 7dd94df7 Carles Marti
    vect2_mol = get_atom_coords(molecule, ctr3_mol) - get_atom_coords(molecule,
627 7dd94df7 Carles Marti
                                                                      ctr2_mol)
628 7dd94df7 Carles Marti
629 7dd94df7 Carles Marti
    # Check if dihedral angles can be defined
630 7dd94df7 Carles Marti
    do_dihedral = dihedral_angle_target is not None
631 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
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    if np.allclose(np.cross(vect_surf, bond_vector), 0):
635 7dd94df7 Carles Marti
        do_dihedral = False
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    # Check if requested bond angle is not flat
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    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
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    # Check if vect_mol and vect2_mol are not aligned
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    if np.allclose(np.cross(vect_mol, vect2_mol), 0):
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        do_mol_dihedral = False
643 7dd94df7 Carles Marti
644 7dd94df7 Carles Marti
    ###########################
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    #       Translation       #
646 7dd94df7 Carles Marti
    ###########################
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648 7dd94df7 Carles Marti
    # Compute and apply translation of adsorbate
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    translation = bond_vector - vect_inter
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    molecule.translate(translation)
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652 7dd94df7 Carles Marti
    # Update adsorption bond
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    vect_inter = get_atom_coords(molecule, ctr1_mol) - \
654 d6da8693 Carles Marti
        get_atom_coords(surf, ctr1_surf)
655 7dd94df7 Carles Marti
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    # 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 "
659 7dd94df7 Carles Marti
        # "length)".format(np.linalg.norm(vect_inter - bond_vector)))
660 7dd94df7 Carles Marti
    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)
664 7dd94df7 Carles Marti
665 7dd94df7 Carles Marti
    ###########################
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    #   Bond angle rotation   #
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    ###########################
668 7dd94df7 Carles Marti
669 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):
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        # If molecular bonds are aligned, any vector orthogonal to vect_inter
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        # 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
675 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,
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                                                      vect_inter) / np.dot(
681 7dd94df7 Carles Marti
            vect_inter, vect_inter) * vect_inter
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    # Retrieve current bond angle
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    bond_angle_ini = get_vect_angle(-vect_inter, vect_mol, rotation_vector)
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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,
688 7dd94df7 Carles Marti
                    center=get_atom_coords(molecule, ctr1_mol))
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    # Update molecular bonds
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    vect_mol = get_atom_coords(molecule, ctr2_mol) - get_atom_coords(molecule,
692 7dd94df7 Carles Marti
                                                                     ctr1_mol)
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    vect2_mol = get_atom_coords(molecule, ctr3_mol) - get_atom_coords(molecule,
694 7dd94df7 Carles Marti
                                                                      ctr2_mol)
695 7dd94df7 Carles Marti
696 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,
699 7dd94df7 Carles Marti
                  atol=1e-3) and np.allclose(get_atom_coords(molecule, ctr1_mol)
700 7dd94df7 Carles Marti
                                             - get_atom_coords(surf,
701 7dd94df7 Carles Marti
                                                               ctr1_surf),
702 7dd94df7 Carles Marti
                                             vect_inter):
703 7dd94df7 Carles Marti
        pass  # print("Rotation successfully applied (error: {:.5f}°)".format(
704 7dd94df7 Carles Marti
        # (bond_angle - bond_angle_target + 90) % 180 - 90))
705 7dd94df7 Carles Marti
    else:
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        err = 'An unknown error occured during the rotation'
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        logger.error(err)
708 7dd94df7 Carles Marti
        raise AssertionError(err)
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710 7dd94df7 Carles Marti
    ###########################
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    # Dihedral angle rotation #
712 7dd94df7 Carles Marti
    ###########################
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714 7dd94df7 Carles Marti
    # Perform dihedral rotation if possible
715 7dd94df7 Carles Marti
    if do_dihedral:
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        # Retrieve current dihedral angle (by computing the angle between the
717 7dd94df7 Carles Marti
        # vector rejection of vect_surf and vect_mol onto vect_inter)
718 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) / \
723 7dd94df7 Carles Marti
                              vect_inter_inner * vect_inter
724 7dd94df7 Carles Marti
        else:
725 7dd94df7 Carles Marti
            vect_mol_reject = vect_mol - np.dot(vect_mol, vect_inter) / \
726 7dd94df7 Carles Marti
                              vect_inter_inner * vect_inter
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        dihedral_angle_ini = get_vect_angle(vect_surf_reject, vect_mol_reject,
728 7dd94df7 Carles Marti
                                            vect_inter)
729 7dd94df7 Carles Marti
730 7dd94df7 Carles Marti
        # Apply dihedral rotation along vect_inter
731 7dd94df7 Carles Marti
        molecule.rotate(dihedral_angle_target - dihedral_angle_ini,
732 7dd94df7 Carles Marti
                        v=vect_inter, center=get_atom_coords(molecule,
733 7dd94df7 Carles Marti
                                                             ctr1_mol))
734 7dd94df7 Carles Marti
735 7dd94df7 Carles Marti
        # Update molecular bonds
736 7dd94df7 Carles Marti
        vect_mol = get_atom_coords(molecule, ctr2_mol) - \
737 d6da8693 Carles Marti
            get_atom_coords(molecule, ctr1_mol)
738 7dd94df7 Carles Marti
        vect2_mol = get_atom_coords(molecule, ctr3_mol) - \
739 d6da8693 Carles Marti
            get_atom_coords(molecule, ctr2_mol)
740 7dd94df7 Carles Marti
741 7dd94df7 Carles Marti
        # Check if rotation was successful
742 7dd94df7 Carles Marti
        # Check dihedral rotation
743 7dd94df7 Carles Marti
        if dihedral_use_mol2:
744 7dd94df7 Carles Marti
            vect_mol_reject = vect2_mol - np.dot(vect2_mol, vect_inter) / \
745 7dd94df7 Carles Marti
                              vect_inter_inner * vect_inter
746 7dd94df7 Carles Marti
        else:
747 7dd94df7 Carles Marti
            vect_mol_reject = vect_mol - np.dot(vect_mol, vect_inter) / \
748 7dd94df7 Carles Marti
                              vect_inter_inner * vect_inter
749 7dd94df7 Carles Marti
        dihedral_angle = get_vect_angle(vect_surf_reject, vect_mol_reject,
750 7dd94df7 Carles Marti
                                        vect_inter)
751 7dd94df7 Carles Marti
        # Check bond rotation is unmodified
752 7dd94df7 Carles Marti
        bond_angle = get_vect_angle(-vect_inter, vect_mol)
753 7dd94df7 Carles Marti
        if np.isclose((dihedral_angle - dihedral_angle_target + 90) % 180 - 90,
754 5261a07f Carles Marti
                      0, atol=1e-3) \
755 5261a07f Carles Marti
                and np.isclose((bond_angle - bond_angle_target + 90) %
756 5261a07f Carles Marti
                               180 - 90, 0, atol=1e-5) \
757 c25aa299 Carles Marti
                and np.allclose(get_atom_coords(molecule, ctr1_mol)
758 c25aa299 Carles Marti
                                - get_atom_coords(surf, ctr1_surf),
759 c25aa299 Carles Marti
                                vect_inter):
760 7dd94df7 Carles Marti
            pass  # print( "Dihedral rotation successfully applied (error: {
761 7dd94df7 Carles Marti
            # :.5f}°)".format((dihedral_angle - dihedral_angle_target + 90) %
762 7dd94df7 Carles Marti
            # 180 - 90))
763 7dd94df7 Carles Marti
        else:
764 7dd94df7 Carles Marti
            err = 'An unknown error occured during the dihedral rotation'
765 7dd94df7 Carles Marti
            logger.error(err)
766 7dd94df7 Carles Marti
            raise AssertionError(err)
767 7dd94df7 Carles Marti
768 7dd94df7 Carles Marti
    #####################################
769 7dd94df7 Carles Marti
    # Adsorbate dihedral angle rotation #
770 7dd94df7 Carles Marti
    #####################################
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772 7dd94df7 Carles Marti
    # Perform adsorbate dihedral rotation if possible
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    if do_mol_dihedral:
774 7dd94df7 Carles Marti
        # Retrieve current adsorbate dihedral angle (by computing the angle
775 7dd94df7 Carles Marti
        # between the orthogonal rejection of vect_inter and vect2_mol onto
776 7dd94df7 Carles Marti
        # vect_mol)
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        vect_mol_inner = np.dot(vect_mol, vect_mol)
778 7dd94df7 Carles Marti
        bond_inter_reject = -vect_inter - np.dot(-vect_inter, vect_mol) / \
779 5261a07f Carles Marti
            vect_mol_inner * vect_mol
780 7dd94df7 Carles Marti
        bond2_mol_reject = vect2_mol - np.dot(vect2_mol, vect_mol) / \
781 5261a07f Carles Marti
            vect_mol_inner * vect_mol
782 7dd94df7 Carles Marti
        dihedral_angle_ini = get_vect_angle(bond_inter_reject,
783 7dd94df7 Carles Marti
                                            bond2_mol_reject, vect_mol)
784 7dd94df7 Carles Marti
785 7dd94df7 Carles Marti
        # Apply dihedral rotation along vect_mol
786 7dd94df7 Carles Marti
        molecule.rotate(mol_dihedral_angle_target - dihedral_angle_ini,
787 7dd94df7 Carles Marti
                        v=vect_mol, center=get_atom_coords(molecule, ctr1_mol))
788 7dd94df7 Carles Marti
789 7dd94df7 Carles Marti
        # Update molecular bonds
790 7dd94df7 Carles Marti
        vect_mol = get_atom_coords(molecule, ctr2_mol) \
791 5261a07f Carles Marti
            - get_atom_coords(molecule, ctr1_mol)
792 7dd94df7 Carles Marti
        vect2_mol = get_atom_coords(molecule, ctr3_mol) \
793 5261a07f Carles Marti
            - get_atom_coords(molecule, ctr2_mol)
794 7dd94df7 Carles Marti
795 7dd94df7 Carles Marti
        # Check if rotation was successful
796 7dd94df7 Carles Marti
        # Check adsorbate dihedral rotation
797 7dd94df7 Carles Marti
        vect_mol_inner = np.dot(vect_mol, vect_mol)
798 7dd94df7 Carles Marti
        bond2_mol_reject = vect2_mol - np.dot(vect2_mol, vect_mol) / \
799 5261a07f Carles Marti
            vect_mol_inner * vect_mol
800 7dd94df7 Carles Marti
        mol_dihedral_angle = get_vect_angle(bond_inter_reject,
801 7dd94df7 Carles Marti
                                            bond2_mol_reject, vect_mol)
802 7dd94df7 Carles Marti
        # Check dihedral rotation
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        vect_inter_inner = np.dot(vect_inter, vect_inter)
804 7dd94df7 Carles Marti
        vect_surf_reject = vect_surf - np.dot(vect_surf, vect_inter) / \
805 5261a07f Carles Marti
            vect_inter_inner * vect_inter
806 7dd94df7 Carles Marti
        vect_mol_reject = vect_mol - np.dot(vect_mol, vect_inter) / \
807 5261a07f Carles Marti
            vect_inter_inner * vect_inter
808 7dd94df7 Carles Marti
        dihedral_angle = get_vect_angle(vect_surf_reject, vect_mol_reject,
809 7dd94df7 Carles Marti
                                        vect_inter)
810 7dd94df7 Carles Marti
        # Check bond rotation is unmodified
811 7dd94df7 Carles Marti
        bond_angle = get_vect_angle(-vect_inter, vect_mol)
812 7dd94df7 Carles Marti
        if np.isclose((mol_dihedral_angle - mol_dihedral_angle_target + 90) %
813 7dd94df7 Carles Marti
                      180 - 90, 0, atol=1e-3) \
814 7dd94df7 Carles Marti
                and np.isclose((dihedral_angle -
815 7dd94df7 Carles Marti
                                dihedral_angle_target + 90) % 180 - 90, 0,
816 7dd94df7 Carles Marti
                               atol=1e-5) \
817 7dd94df7 Carles Marti
                and np.isclose((bond_angle - bond_angle_target + 90) % 180 - 90,
818 7dd94df7 Carles Marti
                               0, atol=1e-5) \
819 7dd94df7 Carles Marti
                and np.allclose(get_atom_coords(molecule, ctr1_mol) -
820 7dd94df7 Carles Marti
                                get_atom_coords(surf, ctr1_surf),
821 7dd94df7 Carles Marti
                                vect_inter):
822 7dd94df7 Carles Marti
            pass  # print(
823 7dd94df7 Carles Marti
            # "Adsorbate dihedral rotation successfully applied (error:
824 7dd94df7 Carles Marti
            # {:.5f}°)".format((mol_dihedral_angle - mol_dihedral_angle_target
825 7dd94df7 Carles Marti
            # + 90) % 180 - 90))
826 7dd94df7 Carles Marti
        else:
827 7dd94df7 Carles Marti
            err = 'An unknown error occured during the adsorbate dihedral ' \
828 7dd94df7 Carles Marti
                  'rotation'
829 7dd94df7 Carles Marti
            logger.error(err)
830 7dd94df7 Carles Marti
            raise AssertionError(err)
831 7dd94df7 Carles Marti
832 7dd94df7 Carles Marti
833 19727725 Carles Marti
def ads_internal(orig_molec, slab, ctr1_mol, ctr2_mol, ctr3_mol, ctr1_surf,
834 19727725 Carles Marti
                 ctr2_surf, num_pts, min_coll_height, coll_coeff, norm_vect,
835 fe91ddb2 Carles Marti
                 slab_nghbs, molec_nghbs, h_donor, h_acceptor, max_hel, height):
836 609104e3 Carles Marti
    """Generates adsorbate-surface structures by sampling over internal angles.
837 5261a07f Carles Marti

838 5261a07f Carles Marti
    @param orig_molec: ase.Atoms object of the molecule to adsorb (adsorbate).
839 5261a07f Carles Marti
    @param slab: ase.Atoms object of the surface on which to adsorb the molecule
840 5261a07f Carles Marti
    @param ctr1_mol: The index/es of the center in the adsorbate to use as
841 5261a07f Carles Marti
        adsorption center.
842 5261a07f Carles Marti
    @param ctr2_mol: The index/es of the center in the adsorbate to use for the
843 5261a07f Carles Marti
        definition of the surf-adsorbate angle, surf-adsorbate dihedral angle
844 5261a07f Carles Marti
        and adsorbate dihedral angle.
845 5261a07f Carles Marti
    @param ctr3_mol: The index/es of the center in the adsorbate to use for the
846 5261a07f Carles Marti
        definition of the adsorbate dihedral angle.
847 5261a07f Carles Marti
    @param ctr1_surf: The index/es of the center in the surface to use as
848 5261a07f Carles Marti
        adsorption center.
849 5261a07f Carles Marti
    @param ctr2_surf: The index/es of the center in the surface to use for the
850 5261a07f Carles Marti
        definition of the surf-adsorbate dihedral angle.
851 5261a07f Carles Marti
    @param num_pts: Number on which to sample Euler angles.
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    @param min_coll_height: The lowest height for which to detect a collision
853 5261a07f Carles Marti
    @param coll_coeff: The coefficient that multiplies the covalent radius of
854 5261a07f Carles Marti
        atoms resulting in a distance that two atoms being closer to that is
855 5261a07f Carles Marti
        considered as atomic collision.
856 5261a07f Carles Marti
    @param norm_vect: The vector perpendicular to the surface.
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    @param slab_nghbs: Number of neigbors in the surface.
858 5261a07f Carles Marti
    @param molec_nghbs: Number of neighbors in the molecule.
859 c25aa299 Carles Marti
    @param h_donor: List of atom types or atom numbers that are H-donors.
860 c25aa299 Carles Marti
    @param h_acceptor: List of atom types or atom numbers that are H-acceptors.
861 c25aa299 Carles Marti
    @param max_hel: Maximum value for sampling the helicopter
862 5261a07f Carles Marti
        (surf-adsorbate dihedral) angle.
863 fe91ddb2 Carles Marti
    @param height: Height on which to try adsorption.
864 5261a07f Carles Marti
    @return: list of ase.Atoms object conatining all the orientations of a given
865 5261a07f Carles Marti
        conformer.
866 5261a07f Carles Marti
    """
867 7dd94df7 Carles Marti
    from copy import deepcopy
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    slab_ads_list = []
869 9dca524b Carles Marti
    # Rotation over bond angle
870 9dca524b Carles Marti
    for alpha in np.arange(90, 180+1, 90 / max(1, num_pts-1))[:num_pts]:
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        # Rotation over surf-adsorbate dihedral angle
872 c25aa299 Carles Marti
        for beta in np.arange(0, max_hel, max_hel / num_pts):
873 7dd94df7 Carles Marti
            # Rotation over adsorbate bond dihedral angle
874 9dca524b Carles Marti
            for gamma in np.arange(90, 270+1, 180/max(1, num_pts-1))[:num_pts]:
875 9dca524b Carles Marti
                # Avoid duplicates as gamma rotation has no effect on plane
876 9dca524b Carles Marti
                # angles.
877 9dca524b Carles Marti
                if alpha == 180 and gamma > 90:
878 9dca524b Carles Marti
                    continue
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                new_molec = deepcopy(orig_molec)
880 19727725 Carles Marti
                internal_rotate(new_molec, slab, ctr1_mol, ctr2_mol, ctr3_mol,
881 19727725 Carles Marti
                                ctr1_surf, ctr2_surf, norm_vect, alpha,
882 19727725 Carles Marti
                                beta, gamma)
883 7dd94df7 Carles Marti
                site_coords = get_atom_coords(slab, ctr1_surf)
884 7dd94df7 Carles Marti
                ctr_coords = get_atom_coords(new_molec, ctr1_mol)
885 7dd94df7 Carles Marti
                slab_molec, collision = correct_coll(new_molec, slab,
886 7dd94df7 Carles Marti
                                                     ctr_coords, site_coords,
887 7dd94df7 Carles Marti
                                                     num_pts, min_coll_height,
888 7dd94df7 Carles Marti
                                                     norm_vect, slab_nghbs,
889 fe91ddb2 Carles Marti
                                                     molec_nghbs, coll_coeff,
890 fe91ddb2 Carles Marti
                                                     height)
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                if not collision and \
892 cf40df1b Carles Marti
                        not any([np.allclose(slab_molec.positions,
893 cf40df1b Carles Marti
                                             conf.positions)
894 cf40df1b Carles Marti
                                 for conf in slab_ads_list]):
895 cf40df1b Carles Marti
                    slab_ads_list.append(slab_molec)
896 cf40df1b Carles Marti
                    if h_donor is not False:
897 cf40df1b Carles Marti
                        slab_ads_list.extend(dissociation(slab_molec, h_donor,
898 cf40df1b Carles Marti
                                                          h_acceptor,
899 cf40df1b Carles Marti
                                                          len(slab)))
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901 cf40df1b Carles Marti
    return slab_ads_list
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903 f3d1e601 Carles Marti
904 7dd94df7 Carles Marti
def adsorb_confs(conf_list, surf, inp_vars):
905 a5cc42ff Carles Marti
    """Generates a number of adsorbate-surface structure coordinates.
906 a5cc42ff Carles Marti

907 a5cc42ff Carles Marti
    Given a list of conformers, a surface, a list of atom indices (or list of
908 a5cc42ff Carles Marti
    list of indices) of both the surface and the adsorbate, it generates a
909 a5cc42ff Carles Marti
    number of adsorbate-surface structures for every possible combination of
910 a5cc42ff Carles Marti
    them at different orientations.
911 a5cc42ff Carles Marti
    @param conf_list: list of ase.Atoms of the different conformers
912 a5cc42ff Carles Marti
    @param surf: the ase.Atoms object of the surface
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    @param inp_vars: Calculation parameters from input file.
914 a5cc42ff Carles Marti
    @return: list of ase.Atoms for the adsorbate-surface structures
915 a5cc42ff Carles Marti
    """
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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']
924 c25aa299 Carles Marti
    h_donor = inp_vars['h_donor']
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    h_acceptor = inp_vars['h_acceptor']
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    height = inp_vars['adsorption_height']
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928 bc703cab Carles Marti
    if inp_vars['pbc_cell'] is not False:
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        surf.set_pbc(True)
930 bc703cab Carles Marti
        surf.set_cell(inp_vars['pbc_cell'])
931 bc703cab Carles Marti
932 cf40df1b Carles Marti
    surf_ads_list = []
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    sites_coords = get_atom_coords(surf, sites)
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    if coll_coeff is not False:
935 5fb01677 Carles Marti
        surf_cutoffs = natural_cutoffs(surf, mult=coll_coeff)
936 5fb01677 Carles Marti
        surf_nghbs = len(neighbor_list("i", surf, surf_cutoffs))
937 5fb01677 Carles Marti
    else:
938 5fb01677 Carles Marti
        surf_nghbs = 0
939 7dd94df7 Carles Marti
    for i, conf in enumerate(conf_list):
940 bb55f47c Carles Marti
        molec_ctr_coords = get_atom_coords(conf, molec_ctrs)
941 bc703cab Carles Marti
        if inp_vars['pbc_cell'] is not False:
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            conf.set_pbc(True)
943 bc703cab Carles Marti
            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)
946 5fb01677 Carles Marti
            molec_nghbs = len(neighbor_list("i", conf, conf_cutoffs))
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        else:
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            molec_nghbs = 0
949 7dd94df7 Carles Marti
        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],
952 d6da8693 Carles Marti
                                              inp_vars['pbc_cell'])
953 39df9c43 Carles Marti
            else:
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                norm_vect = inp_norm_vect
955 7dd94df7 Carles Marti
            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, height))
962 609104e3 Carles Marti
                elif angles == 'internal':
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                    mol_ctr1 = molec_ctrs[c]
964 7dd94df7 Carles Marti
                    mol_ctr2 = inp_vars["molec_ctrs2"][c]
965 7dd94df7 Carles Marti
                    mol_ctr3 = inp_vars["molec_ctrs3"][c]
966 7dd94df7 Carles Marti
                    surf_ctr1 = sites[s]
967 7dd94df7 Carles Marti
                    surf_ctr2 = inp_vars["surf_ctrs2"][s]
968 a98d4172 Carles Marti
                    max_h = inp_vars["max_helic_angle"]
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                    surf_ads_list.extend(ads_internal(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, height))
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    return surf_ads_list
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979 f3d1e601 Carles Marti
980 4614bb6a Carles
def run_screening(inp_vars):
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    """Carries out the screening of adsorbate structures on a surface.
982 e07c09eb Carles

983 e07c09eb Carles
    @param inp_vars: Calculation parameters from input file.
984 e07c09eb Carles
    """
985 e07c09eb Carles
    import os
986 57e3a8c7 Carles Marti
    import random
987 fd2384fc Carles Marti
    from modules.formats import collect_coords, adapt_format
988 cf8fe0e3 Carles Marti
    from modules.calculation import run_calc, check_finished_calcs
989 e07c09eb Carles
990 76f4ac19 Carles Marti
    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"):
997 b75bf97d Carles Marti
            err = "'isolated' directory not found. It is needed in order to " \
998 b75bf97d Carles Marti
                  "carry out the screening of structures to be adsorbed"
999 b75bf97d Carles Marti
            logger.error(err)
1000 b75bf97d Carles Marti
            raise FileNotFoundError(err)
1001 e07c09eb Carles
1002 b75bf97d Carles Marti
        correct_calcs, failed_calcs = check_finished_calcs('isolated',
1003 b75bf97d Carles Marti
                                                           inp_vars['code'])
1004 b75bf97d Carles Marti
        if not correct_calcs:
1005 b75bf97d Carles Marti
            err_msg = "No calculations on 'isolated' finished normally."
1006 b75bf97d Carles Marti
            logger.error(err_msg)
1007 b75bf97d Carles Marti
            raise FileNotFoundError(err_msg)
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1009 b75bf97d Carles Marti
        logger.info(f"Found {len(correct_calcs)} structures of isolated "
1010 b75bf97d Carles Marti
                    f"conformers whose calculation finished normally.")
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        if len(failed_calcs) != 0:
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            logger.warning(
1013 b75bf97d Carles Marti
                f"Found {len(failed_calcs)} calculations more that "
1014 b75bf97d Carles Marti
                f"did not finish normally: {failed_calcs}. \n"
1015 b75bf97d Carles Marti
                f"Using only the ones that finished normally: "
1016 b75bf97d Carles Marti
                f"{correct_calcs}.")
1017 b75bf97d Carles Marti
1018 b75bf97d Carles Marti
        conformer_atoms_list = collect_coords(correct_calcs, inp_vars['code'],
1019 b75bf97d Carles Marti
                                              'isolated',
1020 b75bf97d Carles Marti
                                              inp_vars['special_atoms'])
1021 b75bf97d Carles Marti
        selected_confs = select_confs(conformer_atoms_list, correct_calcs,
1022 b75bf97d Carles Marti
                                      inp_vars['select_magns'],
1023 b75bf97d Carles Marti
                                      inp_vars['confs_per_magn'],
1024 b75bf97d Carles Marti
                                      inp_vars['code'])
1025 90819cc3 Carles Marti
    surf = adapt_format('ase', inp_vars['surf_file'], inp_vars['special_atoms'])
1026 cf40df1b Carles Marti
    surf_ads_list = adsorb_confs(selected_confs, surf, inp_vars)
1027 7d97341d Carles Marti
    if len(surf_ads_list) > inp_vars['max_structures']:
1028 57e3a8c7 Carles Marti
        surf_ads_list = random.sample(surf_ads_list, inp_vars['max_structures'])
1029 cf40df1b Carles Marti
    logger.info(f'Generated {len(surf_ads_list)} adsorbate-surface atomic '
1030 cf40df1b Carles Marti
                f'configurations to carry out a calculation of.')
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1032 f3d1e601 Carles Marti
    run_calc('screening', inp_vars, surf_ads_list)
1033 14f39d2a Carles Marti
    logger.info('Finished the procedures for the screening of adsorbate-surface'
1034 14f39d2a Carles Marti
                ' structures section.')