Source code for blockgen

#!/usr/bin/env python
"""
Block mesh generator.
"""
from __future__ import absolute_import
import sys
sys.path.append('.')
from argparse import ArgumentParser

import numpy as nm

from sfepy.base.base import output
from sfepy.mesh.mesh_generators import gen_block_mesh
from sfepy.discrete.fem.meshio import MeshIO

helps = {
    'filename' :
    'output file name [default: %(default)s]',
    'format' : 'output mesh format (overrides output file name extension)',
    'dims' :
    'dimensions  of the block [default: %(default)s]',
    'shape' :
    'shape (counts of nodes in x, y, z) of the block [default: %(default)s]',
    'centre' :
    'centre of the block [default: %(default)s]',
    '2d' :
    'generate a 2D rectangular mesh, the third components of the above'
    ' options are ignored',
}

[docs]def main(): parser = ArgumentParser(description=__doc__) parser.add_argument('--version', action='version', version='%(prog)s') parser.add_argument('-o', metavar='filename', action='store', dest='output_filename', default='out.vtk', help=helps['filename']) parser.add_argument('-f', '--format', metavar='format', action='store', type=str, dest='format', default=None, help=helps['format']) parser.add_argument('-d', '--dims', metavar='dims', action='store', dest='dims', default='[1.0, 1.0, 1.0]', help=helps['dims']) parser.add_argument('-s', '--shape', metavar='shape', action='store', dest='shape', default='[11, 11, 11]', help=helps['shape']) parser.add_argument('-c', '--centre', metavar='centre', action='store', dest='centre', default='[0.0, 0.0, 0.0]', help=helps['centre']) parser.add_argument('-2', '--2d', action='store_true', dest='is_2d', default=False, help=helps['2d']) options = parser.parse_args() dim = 2 if options.is_2d else 3 dims = nm.array(eval(options.dims), dtype=nm.float64)[:dim] shape = nm.array(eval(options.shape), dtype=nm.int32)[:dim] centre = nm.array(eval(options.centre), dtype=nm.float64)[:dim] output.prefix = 'blockgen:' output('dimensions:', dims) output('shape:', shape) output('centre:', centre) mesh = gen_block_mesh(dims, shape, centre, name=options.output_filename) io = MeshIO.for_format(options.output_filename, format=options.format, writable=True) mesh.write(options.output_filename, io=io)
if __name__ == '__main__': main()