#!/usr/bin/env python
"""
Block mesh generator.
"""
import sys
sys.path.append('.')
from argparse import ArgumentParser
import os.path as op
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 check_format_suffix, 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 gen_block(options):
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)
output('output file:', options.output_filename)
check_format_suffix(options.format,
op.splitext(options.output_filename)[1][1:])
mesh = gen_block_mesh(dims, shape, centre, name=options.output_filename)
io = MeshIO.any_from_filename(options.output_filename,
file_format=options.format, mode='w')
mesh.write(options.output_filename, io=io)
[docs]
def add_args(parser):
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'])
[docs]
def main():
parser = ArgumentParser(description=__doc__)
parser.add_argument('--version', action='version', version='%(prog)s')
add_args(parser)
options = parser.parse_args()
gen_block(options)
if __name__ == '__main__':
main()