from sfepy import data_dir

filename_meshes = ['/meshes/3d/cylinder.mesh',
                   '/meshes/3d/cylinder.vtk',
                   '/meshes/various_formats/small2d.mesh',
                   '/meshes/various_formats/small2d.vtk',
                   '/meshes/various_formats/octahedron.node',
                   '/meshes/various_formats/comsol_tri.txt',
                   '/meshes/various_formats/abaqus_hex.inp',
                   '/meshes/various_formats/abaqus_tet.inp',
                   '/meshes/various_formats/abaqus_quad.inp',
                   '/meshes/various_formats/abaqus_tri.inp',
                   '/meshes/various_formats/abaqus_quad_tri.inp',
                   '/meshes/various_formats/hex4.mesh3d',
                   '/meshes/various_formats/tetra8.mesh3d',
                   '/meshes/various_formats/cube.bdf',
                   '/meshes/various_formats/med_2d_tri_quad.med',
                   '/meshes/various_formats/med_3d_tet_hex.med']
filename_meshes = [data_dir + name for name in filename_meshes]

def mesh_hook(mesh, mode):
    """
    Define a mesh programmatically.
    """
    if mode == 'read':
        nodes = [[0, 0], [1, 0], [1, 1], [0, 1]]
        nod_ids = [0, 0, 1, 1]
        conns = [[[0, 1, 2], [0, 2, 3]]]
        mat_ids = [[0, 1]]
        descs = ['2_3']

        mesh._set_data(nodes, nod_ids, conns, mat_ids, descs)

        ## mesh.write('aux.vtk', io='auto')

    elif mode == 'write':
        pass

from sfepy.fem.meshio import UserMeshIO

filename_meshes.extend([mesh_hook, 
UserMeshIO(mesh_hook)