Exemple #1
0
def main():
    parser = OptionParser(usage=usage)
    parser.add_option("-s", "--scale", metavar='scale',
                      action="store", dest="scale",
                      default=None, help=help['scale'])
    parser.add_option("-f", "--format", metavar='format',
                      action="store", type='string', dest="format",
                      default=None, help=help['format'])
    parser.add_option("-l", "--list", action="store_true", 
                      dest="list", help=help['list'])
    (options, args) = parser.parse_args()

    if options.list:
        output_writable_meshes()
        sys.exit(0)

    if len(args) != 2:
        parser.print_help()
        sys.exit(1)
    
    scale = options.scale
    if scale is not None:
        try:
            try:
                scale = float(scale)
            except ValueError:
                scale = [float(ii) for ii in scale.split(',')]
            scale = nm.array(scale, dtype=nm.float64, ndmin=1)
        except:
            output('bad scale! (%s)' % scale)
            parser.print_help()
            sys.exit(1)
        
    filename_in, filename_out = args
    
    mesh = Mesh.from_file(filename_in)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    io = MeshIO.for_format(filename_out, format=options.format,
                           writable=True)

    output('writing %s...' % filename_out)
    mesh.write(filename_out, io=io)
    output('...done')
Exemple #2
0
def main():
    parser = ArgumentParser(description=__doc__,
                            formatter_class=RawDescriptionHelpFormatter)
    parser.add_argument('-s',
                        '--scale',
                        metavar='scale',
                        action='store',
                        dest='scale',
                        default=None,
                        help=helps['scale'])
    parser.add_argument('-c',
                        '--center',
                        metavar='center',
                        action='store',
                        dest='center',
                        default=None,
                        help=helps['center'])
    parser.add_argument('-r',
                        '--refine',
                        metavar='level',
                        action='store',
                        type=int,
                        dest='refine',
                        default=0,
                        help=helps['refine'])
    parser.add_argument('-f',
                        '--format',
                        metavar='format',
                        action='store',
                        type=str,
                        dest='format',
                        default=None,
                        help=helps['format'])
    parser.add_argument('-l',
                        '--list',
                        action='store_true',
                        dest='list',
                        help=helps['list'])
    parser.add_argument('-m',
                        '--merge',
                        action='store_true',
                        dest='merge',
                        help=helps['merge'])
    parser.add_argument('-t',
                        '--tri-tetra',
                        action='store_true',
                        dest='tri_tetra',
                        help=helps['tri-tetra'])
    parser.add_argument('-2',
                        '--2d',
                        action='store_true',
                        dest='force_2d',
                        help=helps['2d'])
    parser.add_argument('--save-per-mat',
                        action='store_true',
                        dest='save_per_mat',
                        help=helps['save-per-mat'])
    parser.add_argument('--remesh',
                        metavar='options',
                        action='store',
                        dest='remesh',
                        default=None,
                        help=helps['remesh'])
    parser.add_argument('filename_in')
    parser.add_argument('filename_out')
    options = parser.parse_args()

    if options.list:
        output('Supported readable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('r')
        output('')
        output('Supported writable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('w')
        sys.exit(0)

    scale = _parse_val_or_vec(options.scale, 'scale', parser)
    center = _parse_val_or_vec(options.center, 'center', parser)

    filename_in = options.filename_in
    filename_out = options.filename_out

    if options.remesh:
        import tempfile
        import shlex
        import subprocess

        dirname = tempfile.mkdtemp()

        is_surface = options.remesh.startswith('q')
        if is_surface:
            mesh = Mesh.from_file(filename_in)
            domain = FEDomain(mesh.name, mesh)
            region = domain.create_region('surf', 'vertices of surface',
                                          'facet')
            surf_mesh = Mesh.from_region(region,
                                         mesh,
                                         localize=True,
                                         is_surface=True)

            filename = op.join(dirname, 'surf.mesh')
            surf_mesh.write(filename, io='auto')

        else:
            import shutil

            shutil.copy(filename_in, dirname)
            filename = op.join(dirname, op.basename(filename_in))

        qopts = ''.join(options.remesh.split())  # Remove spaces.
        command = 'tetgen -BFENkACp%s %s' % (qopts, filename)
        args = shlex.split(command)
        subprocess.call(args)

        root, ext = op.splitext(filename)
        mesh = Mesh.from_file(root + '.1.vtk')

        remove_files(dirname)

    else:
        mesh = Mesh.from_file(filename_in)

    if options.force_2d:
        data = list(mesh._get_io_data())
        data[0] = data[0][:, :2]
        mesh = Mesh.from_data(mesh.name, *data)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    if center is not None:
        cc = 0.5 * mesh.get_bounding_box().sum(0)
        shift = center - cc
        tr = nm.c_[nm.eye(mesh.dim, dtype=nm.float64), shift[:, None]]
        mesh.transform_coors(tr)

    if options.refine > 0:
        domain = FEDomain(mesh.name, mesh)
        output('initial mesh: %d nodes %d elements' %
               (domain.shape.n_nod, domain.shape.n_el))

        for ii in range(options.refine):
            output('refine %d...' % ii)
            domain = domain.refine()
            output('... %d nodes %d elements' %
                   (domain.shape.n_nod, domain.shape.n_el))

        mesh = domain.mesh

    if options.tri_tetra > 0:
        mesh = triangulate(mesh, verbose=True)

    if options.merge:
        desc = mesh.descs[0]
        coor, ngroups, conns = fix_double_nodes(mesh.coors,
                                                mesh.cmesh.vertex_groups,
                                                mesh.get_conn(desc))
        mesh = Mesh.from_data(mesh.name + '_merged', coor, ngroups, [conns],
                              [mesh.cmesh.cell_groups], [desc])

    if options.save_per_mat:
        desc = mesh.descs[0]
        conns, cgroups = mesh.get_conn(desc), mesh.cmesh.cell_groups
        coors, ngroups = mesh.coors, mesh.cmesh.vertex_groups
        mat_ids = nm.unique(cgroups)

        for mat_id in mat_ids:
            idxs = nm.where(cgroups == mat_id)[0]
            imesh = Mesh.from_data(mesh.name + '_matid_%d' % mat_id, coors,
                                   ngroups, [conns[idxs]], [cgroups[idxs]],
                                   [desc])

            fbase, fext = op.splitext(filename_out)
            ifilename_out = '%s_matid_%d%s' % (fbase, mat_id, fext)
            io = MeshIO.for_format(ifilename_out,
                                   format=options.format,
                                   writable=True)
            output('writing %s...' % ifilename_out)
            imesh.write(ifilename_out, io=io)
            output('...done')

    io = MeshIO.for_format(filename_out, format=options.format, writable=True)

    cell_types = ', '.join(supported_cell_types[io.format])
    output('writing [%s] %s...' % (cell_types, filename_out))
    mesh.write(filename_out, io=io)
    output('...done')
Exemple #3
0
def main():
    parser = OptionParser(usage=usage)
    parser.add_option("-s", "--scale", metavar="scale", action="store", dest="scale", default=None, help=help["scale"])
    parser.add_option(
        "-f",
        "--format",
        metavar="format",
        action="store",
        type="string",
        dest="format",
        default=None,
        help=help["format"],
    )
    parser.add_option("-l", "--list", action="store_true", dest="list", help=help["list"])
    (options, args) = parser.parse_args()

    if options.list:
        output_writable_meshes()
        sys.exit(0)

    if len(args) != 2:
        parser.print_help()
        sys.exit(1)

    scale = options.scale
    if scale is not None:
        try:
            try:
                scale = float(scale)
            except ValueError:
                scale = [float(ii) for ii in scale.split(",")]
            scale = nm.array(scale, dtype=nm.float64, ndmin=1)
        except:
            output("bad scale! (%s)" % scale)
            parser.print_help()
            sys.exit(1)

    filename_in, filename_out = args

    mesh = Mesh.from_file(filename_in)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError("bad scale! (%s)" % scale)
        mesh.transform_coors(tr)

    io = "auto"
    if options.format:
        try:
            io = io_table[options.format](filename_out)
        except KeyError:
            output("unknown output mesh format! (%s)" % options.format)
            output_writable_meshes()
            sys.exit(1)

        if "w" not in supported_capabilities[options.format]:
            output("write support not implemented for output mesh format! (%s)" % options.format)
            output_writable_meshes()
            sys.exit(1)

    output("writing %s..." % filename_out)
    mesh.write(filename_out, io=io)
    output("...done")
Exemple #4
0
def main():
    parser = OptionParser(usage=usage)
    parser.add_option('-s', '--scale', metavar='scale',
                      action='store', dest='scale',
                      default=None, help=help['scale'])
    parser.add_option('-c', '--center', metavar='center',
                      action='store', dest='center',
                      default=None, help=help['center'])
    parser.add_option('-r', '--refine', metavar='level',
                      action='store', type=int, dest='refine',
                      default=0, help=help['refine'])
    parser.add_option('-f', '--format', metavar='format',
                      action='store', type='string', dest='format',
                      default=None, help=help['format'])
    parser.add_option('-l', '--list', action='store_true',
                      dest='list', help=help['list'])
    (options, args) = parser.parse_args()

    if options.list:
        output('Supported readable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('r')
        output('')
        output('Supported writable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('w')
        sys.exit(0)

    if len(args) != 2:
        parser.print_help()
        sys.exit(1)

    scale = _parse_val_or_vec(options.scale, 'scale', parser)
    center = _parse_val_or_vec(options.center, 'center', parser)

    filename_in, filename_out = args

    mesh = Mesh.from_file(filename_in)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    if center is not None:
        cc = 0.5 * mesh.get_bounding_box().sum(0)
        shift = center - cc
        tr = nm.c_[nm.eye(mesh.dim, dtype=nm.float64), shift[:, None]]
        mesh.transform_coors(tr)

    if options.refine > 0:
        domain = FEDomain(mesh.name, mesh)
        output('initial mesh: %d nodes %d elements'
               % (domain.shape.n_nod, domain.shape.n_el))

        for ii in range(options.refine):
            output('refine %d...' % ii)
            domain = domain.refine()
            output('... %d nodes %d elements'
                   % (domain.shape.n_nod, domain.shape.n_el))

        mesh = domain.mesh

    io = MeshIO.for_format(filename_out, format=options.format,
                           writable=True)

    cell_types = ', '.join(supported_cell_types[io.format])
    output('writing [%s] %s...' % (cell_types, filename_out))
    mesh.write(filename_out, io=io)
    output('...done')
Exemple #5
0
def main():
    parser = ArgumentParser(description=__doc__,
                            formatter_class=RawDescriptionHelpFormatter)
    parser.add_argument('-s',
                        '--scale',
                        metavar='scale',
                        action='store',
                        dest='scale',
                        default=None,
                        help=helps['scale'])
    parser.add_argument('-c',
                        '--center',
                        metavar='center',
                        action='store',
                        dest='center',
                        default=None,
                        help=helps['center'])
    parser.add_argument('-r',
                        '--refine',
                        metavar='level',
                        action='store',
                        type=int,
                        dest='refine',
                        default=0,
                        help=helps['refine'])
    parser.add_argument('-f',
                        '--format',
                        metavar='format',
                        action='store',
                        type=str,
                        dest='format',
                        default=None,
                        help=helps['format'])
    parser.add_argument('-l',
                        '--list',
                        action='store_true',
                        dest='list',
                        help=helps['list'])
    parser.add_argument('-m',
                        '--merge',
                        action='store_true',
                        dest='merge',
                        help=helps['merge'])
    parser.add_argument('-t',
                        '--tri-tetra',
                        action='store_true',
                        dest='tri_tetra',
                        help=helps['tri-tetra'])
    parser.add_argument('filename_in')
    parser.add_argument('filename_out')
    options = parser.parse_args()

    if options.list:
        output('Supported readable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('r')
        output('')
        output('Supported writable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('w')
        sys.exit(0)

    scale = _parse_val_or_vec(options.scale, 'scale', parser)
    center = _parse_val_or_vec(options.center, 'center', parser)

    filename_in = options.filename_in
    filename_out = options.filename_out

    mesh = Mesh.from_file(filename_in)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    if center is not None:
        cc = 0.5 * mesh.get_bounding_box().sum(0)
        shift = center - cc
        tr = nm.c_[nm.eye(mesh.dim, dtype=nm.float64), shift[:, None]]
        mesh.transform_coors(tr)

    if options.refine > 0:
        domain = FEDomain(mesh.name, mesh)
        output('initial mesh: %d nodes %d elements' %
               (domain.shape.n_nod, domain.shape.n_el))

        for ii in range(options.refine):
            output('refine %d...' % ii)
            domain = domain.refine()
            output('... %d nodes %d elements' %
                   (domain.shape.n_nod, domain.shape.n_el))

        mesh = domain.mesh

    if options.tri_tetra > 0:
        conns = None
        for k, new_desc in [('3_8', '3_4'), ('2_4', '2_3')]:
            if k in mesh.descs:
                conns = mesh.get_conn(k)
                break

        if conns is not None:
            nelo = conns.shape[0]
            output('initial mesh: %d elements' % nelo)

            new_conns = elems_q2t(conns)
            nn = new_conns.shape[0] // nelo
            new_cgroups = nm.repeat(mesh.cmesh.cell_groups, nn)

            output('new mesh: %d elements' % new_conns.shape[0])
            mesh = Mesh.from_data(mesh.name, mesh.coors,
                                  mesh.cmesh.vertex_groups, [new_conns],
                                  [new_cgroups], [new_desc])

    if options.merge:
        desc = mesh.descs[0]
        coor, ngroups, conns = fix_double_nodes(mesh.coors,
                                                mesh.cmesh.vertex_groups,
                                                mesh.get_conn(desc), 1e-9)
        mesh = Mesh.from_data(mesh.name + '_merged', coor, ngroups, [conns],
                              [mesh.cmesh.cell_groups], [desc])

    io = MeshIO.for_format(filename_out, format=options.format, writable=True)

    cell_types = ', '.join(supported_cell_types[io.format])
    output('writing [%s] %s...' % (cell_types, filename_out))
    mesh.write(filename_out, io=io)
    output('...done')
Exemple #6
0
def main():
    parser = ArgumentParser(description=__doc__,
                            formatter_class=RawDescriptionHelpFormatter)
    parser.add_argument('-s', '--scale', metavar='scale',
                        action='store', dest='scale',
                        default=None, help=helps['scale'])
    parser.add_argument('-c', '--center', metavar='center',
                        action='store', dest='center',
                        default=None, help=helps['center'])
    parser.add_argument('-r', '--refine', metavar='level',
                        action='store', type=int, dest='refine',
                        default=0, help=helps['refine'])
    parser.add_argument('-f', '--format', metavar='format',
                        action='store', type=str, dest='format',
                        default=None, help=helps['format'])
    parser.add_argument('-l', '--list', action='store_true',
                        dest='list', help=helps['list'])
    parser.add_argument('-m', '--merge', action='store_true',
                        dest='merge', help=helps['merge'])
    parser.add_argument('-t', '--tri-tetra', action='store_true',
                        dest='tri_tetra', help=helps['tri-tetra'])
    parser.add_argument('-2', '--2d', action='store_true',
                        dest='force_2d', help=helps['2d'])
    parser.add_argument('--save-per-mat', action='store_true',
                        dest='save_per_mat', help=helps['save-per-mat'])
    parser.add_argument('--remesh', metavar='options',
                        action='store', dest='remesh',
                        default=None, help=helps['remesh'])
    parser.add_argument('filename_in')
    parser.add_argument('filename_out')
    options = parser.parse_args()

    if options.list:
        output('Supported readable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('r')
        output('')
        output('Supported writable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('w')
        sys.exit(0)

    scale = _parse_val_or_vec(options.scale, 'scale', parser)
    center = _parse_val_or_vec(options.center, 'center', parser)

    filename_in = options.filename_in
    filename_out = options.filename_out

    if options.remesh:
        import tempfile
        import shlex
        import subprocess

        dirname = tempfile.mkdtemp()

        is_surface = options.remesh.startswith('q')
        if is_surface:
            mesh = Mesh.from_file(filename_in)
            domain = FEDomain(mesh.name, mesh)
            region = domain.create_region('surf', 'vertices of surface',
                                          'facet')
            surf_mesh = Mesh.from_region(region, mesh,
                                         localize=True, is_surface=True)

            filename = op.join(dirname, 'surf.mesh')
            surf_mesh.write(filename, io='auto')

        else:
            import shutil

            shutil.copy(filename_in, dirname)
            filename = op.join(dirname, op.basename(filename_in))

        qopts = ''.join(options.remesh.split()) # Remove spaces.
        command = 'tetgen -BFENkACp%s %s' % (qopts, filename)
        args = shlex.split(command)
        subprocess.call(args)

        root, ext = op.splitext(filename)
        mesh = Mesh.from_file(root + '.1.vtk')

        remove_files(dirname)

    else:
        mesh = Mesh.from_file(filename_in)

    if options.force_2d:
        data = list(mesh._get_io_data())
        data[0] = data[0][:, :2]
        mesh = Mesh.from_data(mesh.name, *data)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    if center is not None:
        cc = 0.5 * mesh.get_bounding_box().sum(0)
        shift = center - cc
        tr = nm.c_[nm.eye(mesh.dim, dtype=nm.float64), shift[:, None]]
        mesh.transform_coors(tr)

    if options.refine > 0:
        domain = FEDomain(mesh.name, mesh)
        output('initial mesh: %d nodes %d elements'
               % (domain.shape.n_nod, domain.shape.n_el))

        for ii in range(options.refine):
            output('refine %d...' % ii)
            domain = domain.refine()
            output('... %d nodes %d elements'
                   % (domain.shape.n_nod, domain.shape.n_el))

        mesh = domain.mesh

    if options.tri_tetra > 0:
        conns = None
        for k, new_desc in [('3_8', '3_4'), ('2_4', '2_3')]:
            if k in mesh.descs:
                conns = mesh.get_conn(k)
                break

        if conns is not None:
            nelo = conns.shape[0]
            output('initial mesh: %d elements' % nelo)

            new_conns = elems_q2t(conns)
            nn = new_conns.shape[0] // nelo
            new_cgroups = nm.repeat(mesh.cmesh.cell_groups, nn)

            output('new mesh: %d elements' % new_conns.shape[0])
            mesh = Mesh.from_data(mesh.name, mesh.coors,
                                  mesh.cmesh.vertex_groups,
                                  [new_conns], [new_cgroups], [new_desc])

    if options.merge:
        desc = mesh.descs[0]
        coor, ngroups, conns = fix_double_nodes(mesh.coors,
                                                mesh.cmesh.vertex_groups,
                                                mesh.get_conn(desc), 1e-9)
        mesh = Mesh.from_data(mesh.name + '_merged',
                              coor, ngroups,
                              [conns], [mesh.cmesh.cell_groups], [desc])

    if options.save_per_mat:
        desc = mesh.descs[0]
        conns, cgroups = mesh.get_conn(desc), mesh.cmesh.cell_groups
        coors, ngroups = mesh.coors, mesh.cmesh.vertex_groups
        mat_ids = nm.unique(cgroups)

        for mat_id in mat_ids:
            idxs = nm.where(cgroups == mat_id)[0]
            imesh = Mesh.from_data(mesh.name + '_matid_%d' % mat_id,
                                   coors, ngroups,
                                   [conns[idxs]], [cgroups[idxs]], [desc])

            fbase, fext = op.splitext(filename_out)
            ifilename_out = '%s_matid_%d%s' % (fbase, mat_id, fext)
            io = MeshIO.for_format(ifilename_out, format=options.format,
                                   writable=True)
            output('writing %s...' % ifilename_out)
            imesh.write(ifilename_out, io=io)
            output('...done')

    io = MeshIO.for_format(filename_out, format=options.format,
                           writable=True)

    cell_types = ', '.join(supported_cell_types[io.format])
    output('writing [%s] %s...' % (cell_types, filename_out))
    mesh.write(filename_out, io=io)
    output('...done')
Exemple #7
0
def main():
    parser = ArgumentParser(description=__doc__,
                            formatter_class=RawDescriptionHelpFormatter)
    parser.add_argument('-s',
                        '--scale',
                        metavar='scale',
                        action='store',
                        dest='scale',
                        default=None,
                        help=help['scale'])
    parser.add_argument('-c',
                        '--center',
                        metavar='center',
                        action='store',
                        dest='center',
                        default=None,
                        help=help['center'])
    parser.add_argument('-r',
                        '--refine',
                        metavar='level',
                        action='store',
                        type=int,
                        dest='refine',
                        default=0,
                        help=help['refine'])
    parser.add_argument('-f',
                        '--format',
                        metavar='format',
                        action='store',
                        type=str,
                        dest='format',
                        default=None,
                        help=help['format'])
    parser.add_argument('-l',
                        '--list',
                        action='store_true',
                        dest='list',
                        help=help['list'])
    parser.add_argument('filename_in')
    parser.add_argument('filename_out')
    options = parser.parse_args()

    if options.list:
        output('Supported readable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('r')
        output('')
        output('Supported writable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('w')
        sys.exit(0)

    scale = _parse_val_or_vec(options.scale, 'scale', parser)
    center = _parse_val_or_vec(options.center, 'center', parser)

    filename_in = options.filename_in
    filename_out = options.filename_out

    mesh = Mesh.from_file(filename_in)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    if center is not None:
        cc = 0.5 * mesh.get_bounding_box().sum(0)
        shift = center - cc
        tr = nm.c_[nm.eye(mesh.dim, dtype=nm.float64), shift[:, None]]
        mesh.transform_coors(tr)

    if options.refine > 0:
        domain = FEDomain(mesh.name, mesh)
        output('initial mesh: %d nodes %d elements' %
               (domain.shape.n_nod, domain.shape.n_el))

        for ii in range(options.refine):
            output('refine %d...' % ii)
            domain = domain.refine()
            output('... %d nodes %d elements' %
                   (domain.shape.n_nod, domain.shape.n_el))

        mesh = domain.mesh

    io = MeshIO.for_format(filename_out, format=options.format, writable=True)

    cell_types = ', '.join(supported_cell_types[io.format])
    output('writing [%s] %s...' % (cell_types, filename_out))
    mesh.write(filename_out, io=io)
    output('...done')
Exemple #8
0
def main():
    parser = ArgumentParser(description=__doc__,
                            formatter_class=RawDescriptionHelpFormatter)
    parser.add_argument('-s', '--scale', metavar='scale',
                        action='store', dest='scale',
                        default=None, help=helps['scale'])
    parser.add_argument('-c', '--center', metavar='center',
                        action='store', dest='center',
                        default=None, help=helps['center'])
    parser.add_argument('-r', '--refine', metavar='level',
                        action='store', type=int, dest='refine',
                        default=0, help=helps['refine'])
    parser.add_argument('-f', '--format', metavar='format',
                        action='store', type=str, dest='format',
                        default=None, help=helps['format'])
    parser.add_argument('-l', '--list', action='store_true',
                        dest='list', help=helps['list'])
    parser.add_argument('-m', '--merge', action='store_true',
                        dest='merge', help=helps['merge'])
    parser.add_argument('-t', '--tri-tetra', action='store_true',
                        dest='tri_tetra', help=helps['tri-tetra'])
    parser.add_argument('filename_in')
    parser.add_argument('filename_out')
    options = parser.parse_args()

    if options.list:
        output('Supported readable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('r')
        output('')
        output('Supported writable mesh formats:')
        output('--------------------------------')
        output_mesh_formats('w')
        sys.exit(0)

    scale = _parse_val_or_vec(options.scale, 'scale', parser)
    center = _parse_val_or_vec(options.center, 'center', parser)

    filename_in = options.filename_in
    filename_out = options.filename_out

    mesh = Mesh.from_file(filename_in)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    if center is not None:
        cc = 0.5 * mesh.get_bounding_box().sum(0)
        shift = center - cc
        tr = nm.c_[nm.eye(mesh.dim, dtype=nm.float64), shift[:, None]]
        mesh.transform_coors(tr)

    if options.refine > 0:
        domain = FEDomain(mesh.name, mesh)
        output('initial mesh: %d nodes %d elements'
               % (domain.shape.n_nod, domain.shape.n_el))

        for ii in range(options.refine):
            output('refine %d...' % ii)
            domain = domain.refine()
            output('... %d nodes %d elements'
                   % (domain.shape.n_nod, domain.shape.n_el))

        mesh = domain.mesh

    if options.tri_tetra > 0:
        conns = None
        for k, new_desc in [('3_8', '3_4'), ('2_4', '2_3')]:
            if k in mesh.descs:
                conns = mesh.get_conn(k)
                break

        if conns is not None:
            nelo = conns.shape[0]
            output('initial mesh: %d elements' % nelo)

            new_conns = elems_q2t(conns)
            nn = new_conns.shape[0] // nelo
            new_cgroups = nm.repeat(mesh.cmesh.cell_groups, nn)

            output('new mesh: %d elements' % new_conns.shape[0])
            mesh = Mesh.from_data(mesh.name, mesh.coors,
                                  mesh.cmesh.vertex_groups,
                                  [new_conns], [new_cgroups], [new_desc])

    if options.merge:
        desc = mesh.descs[0]
        coor, ngroups, conns = fix_double_nodes(mesh.coors,
                                                mesh.cmesh.vertex_groups,
                                                mesh.get_conn(desc), 1e-9)
        mesh = Mesh.from_data(mesh.name + '_merged',
                              coor, ngroups,
                              [conns], [mesh.cmesh.cell_groups], [desc])

    io = MeshIO.for_format(filename_out, format=options.format,
                           writable=True)

    cell_types = ', '.join(supported_cell_types[io.format])
    output('writing [%s] %s...' % (cell_types, filename_out))
    mesh.write(filename_out, io=io)
    output('...done')
Exemple #9
0
def main():
    parser = OptionParser(usage=usage)
    parser.add_option('-s', '--scale', metavar='scale',
                      action='store', dest='scale',
                      default=None, help=help['scale'])
    parser.add_option('-r', '--refine', metavar='level',
                      action='store', type=int, dest='refine',
                      default=0, help=help['refine'])
    parser.add_option('-f', '--format', metavar='format',
                      action='store', type='string', dest='format',
                      default=None, help=help['format'])
    parser.add_option('-l', '--list', action='store_true',
                      dest='list', help=help['list'])
    (options, args) = parser.parse_args()

    if options.list:
        output_writable_meshes()
        sys.exit(0)

    if len(args) != 2:
        parser.print_help()
        sys.exit(1)

    scale = options.scale
    if scale is not None:
        try:
            try:
                scale = float(scale)
            except ValueError:
                scale = [float(ii) for ii in scale.split(',')]
            scale = nm.array(scale, dtype=nm.float64, ndmin=1)
        except:
            output('bad scale! (%s)' % scale)
            parser.print_help()
            sys.exit(1)

    filename_in, filename_out = args

    mesh = Mesh.from_file(filename_in)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    if options.refine > 0:
        domain = Domain(mesh.name, mesh)
        output('initial mesh: %d nodes %d elements'
               % (domain.shape.n_nod, domain.shape.n_el))

        for ii in range(options.refine):
            output('refine %d...' % ii)
            domain = domain.refine()
            output('... %d nodes %d elements'
                   % (domain.shape.n_nod, domain.shape.n_el))

        mesh = domain.mesh

    io = MeshIO.for_format(filename_out, format=options.format,
                           writable=True)

    output('writing %s...' % filename_out)
    mesh.write(filename_out, io=io)
    output('...done')
Exemple #10
0
def main():
    parser = OptionParser(usage=usage)
    parser.add_option('-s',
                      '--scale',
                      metavar='scale',
                      action='store',
                      dest='scale',
                      default=None,
                      help=help['scale'])
    parser.add_option('-c',
                      '--center',
                      metavar='center',
                      action='store',
                      dest='center',
                      default=None,
                      help=help['center'])
    parser.add_option('-r',
                      '--refine',
                      metavar='level',
                      action='store',
                      type=int,
                      dest='refine',
                      default=0,
                      help=help['refine'])
    parser.add_option('-f',
                      '--format',
                      metavar='format',
                      action='store',
                      type='string',
                      dest='format',
                      default=None,
                      help=help['format'])
    parser.add_option('-l',
                      '--list',
                      action='store_true',
                      dest='list',
                      help=help['list'])
    (options, args) = parser.parse_args()

    if options.list:
        output_writable_meshes()
        sys.exit(0)

    if len(args) != 2:
        parser.print_help()
        sys.exit(1)

    scale = _parse_val_or_vec(options.scale, 'scale', parser)
    center = _parse_val_or_vec(options.center, 'center', parser)

    filename_in, filename_out = args

    mesh = Mesh.from_file(filename_in)

    if scale is not None:
        if len(scale) == 1:
            tr = nm.eye(mesh.dim, dtype=nm.float64) * scale
        elif len(scale) == mesh.dim:
            tr = nm.diag(scale)
        else:
            raise ValueError('bad scale! (%s)' % scale)
        mesh.transform_coors(tr)

    if center is not None:
        cc = 0.5 * mesh.get_bounding_box().sum(0)
        shift = center - cc
        tr = nm.c_[nm.eye(mesh.dim, dtype=nm.float64), shift[:, None]]
        mesh.transform_coors(tr)

    if options.refine > 0:
        domain = Domain(mesh.name, mesh)
        output('initial mesh: %d nodes %d elements' %
               (domain.shape.n_nod, domain.shape.n_el))

        for ii in range(options.refine):
            output('refine %d...' % ii)
            domain = domain.refine()
            output('... %d nodes %d elements' %
                   (domain.shape.n_nod, domain.shape.n_el))

        mesh = domain.mesh

    io = MeshIO.for_format(filename_out, format=options.format, writable=True)

    output('writing %s...' % filename_out)
    mesh.write(filename_out, io=io)
    output('...done')