beamme.four_c.beam_interaction_conditions

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 22"""This file contains a function to add the beam interaction conditions for
 234C."""
 24
 25import beamme.core.conf as _conf
 26from beamme.core.boundary_condition import BoundaryCondition as _BoundaryCondition
 27from beamme.core.geometry_set import GeometrySet as _GeometrySet
 28from beamme.core.mesh import Mesh as _Mesh
 29
 30
 31def get_next_possible_id_for_boundary_condition(
 32    mesh: _Mesh,
 33    bc_type: _conf.BoundaryCondition,
 34    geometry_type: _conf.Geometry,
 35    condition_string: str,
 36) -> int:
 37    """Returns the next possible id, which can be used for a boundary condition
 38    based on all previous added boundary conditions within a mesh.
 39
 40    It returns the first ID which is not yet occupied within the existing boundary conditions
 41    w.r.t. to the given search_string and regex group index.
 42
 43    Args:
 44        mesh: Mesh containing already set boundary conditions.
 45        bc_type: Type of the boundary condition to be searched.
 46        geometry_type: Geometry type of the boundary condition.
 47        condition_string: String defining the condition ID tag.
 48
 49    Returns:
 50        id: Smallest available ID
 51    """
 52
 53    found_conditions = []
 54
 55    # loop through every possible geometry and find the conditions
 56    if (bc_type, geometry_type) in mesh.boundary_conditions:
 57        for bc_condition in mesh.boundary_conditions[(bc_type, geometry_type)]:
 58            found_conditions.append(bc_condition)
 59
 60    if not found_conditions:
 61        # return starting id, since no conditions of type has been added.
 62        return 0
 63    else:
 64        existing_ids = []
 65
 66        # compare string of each condition with input and store existing ids
 67        for bc in found_conditions:
 68            if condition_string in bc.data:
 69                existing_ids.append(bc.data[condition_string])
 70            else:
 71                raise KeyError(
 72                    f"The key {condition_string} is not in the data {bc.data}"
 73                )
 74
 75        # return lowest found id
 76        return min(set(range(len(existing_ids) + 1)) - set(existing_ids))
 77
 78
 79def add_beam_interaction_condition(
 80    mesh: _Mesh,
 81    geometry_set_1: _GeometrySet,
 82    geometry_set_2: _GeometrySet,
 83    bc_type: _conf.BoundaryCondition,
 84    *,
 85    id: int | None = None,
 86) -> int:
 87    """Adds a pair of beam interaction boundary conditions to the given mesh
 88    and estimates automatically the id of them based on all previously added
 89    boundary conditions of the mesh.
 90
 91    Args:
 92        mesh: Mesh to which the boundary conditions will be added.
 93        geometry_set_1: GeometrySet 1 for beam interaction boundary condition
 94        geometry_set_2: GeometrySet 2 for beam interaction boundary condition
 95        id: id of the two conditions
 96
 97    Returns:
 98        id: Used id for the created condition.
 99    """
100
101    condition_string = "COUPLING_ID"
102    if id is None:
103        id = get_next_possible_id_for_boundary_condition(
104            mesh,
105            bc_type,
106            geometry_set_1.geometry_type,
107            condition_string=condition_string,
108        )
109
110        id_2 = get_next_possible_id_for_boundary_condition(
111            mesh,
112            bc_type,
113            geometry_set_2.geometry_type,
114            condition_string=condition_string,
115        )
116
117        if not id == id_2:
118            raise ValueError(
119                f"The estimated IDs {id} and {id_2} do not match. Check Inputfile."
120            )
121
122    # Creates the two conditions with the same ID.
123    for geometry_set in [geometry_set_1, geometry_set_2]:
124        mesh.add(
125            _BoundaryCondition(
126                geometry_set, data={condition_string: id}, bc_type=bc_type
127            )
128        )
129
130    return id