def mesh2(name, vertices):
"""
Create a POV-ray mesh2 object from facet data.
Arguments:
name: The name of the object.
vertices: An (N,3) numpy array containing the vertex data.
Returns:
A string representation of a POV-ray mesh2 object.
"""
ifacets, points = stl.toindexed(vertices)
lines = [
"# declare m_{} = mesh2 {{".format(name), ' vertex_vectors {',
' {},'.format(len(points))
]
# The indices sequence 0, 2, 1 is used because of the difference between
# the STL coordinate system and that used in POV-ray
lines += [' <{0}, {2}, {1}>,'.format(*p) for p in points]
lines[-1] = lines[-1][:-1]
lines += [' }\n face_indices {', ' {},'.format(len(ifacets))]
lines += [' <{0}, {1}, {2}>,'.format(*f) for f in ifacets]
lines[-1] = lines[-1][:-1]
lines += [' }', '}']
return '\n'.join(lines)
def mesh2(name, vertices):
"""
Create a POV-ray mesh2 object from facet data.
Arguments:
name: The name of the object.
vertices: An (N,3) numpy array containing the vertex data.
Returns:
A string representation of a POV-ray mesh2 object.
"""
ifacets, points = stl.toindexed(vertices)
lines = [
"# declare m_{} = mesh2 {{".format(name), ' vertex_vectors {',
' {},'.format(len(points))
]
# The indices sequence 1, 0, 2 is used because of the difference between
# the STL coordinate system and that used in POV-ray
lines += [' <{1}, {0}, {2}>,'.format(*p) for p in points]
lines[-1] = lines[-1][:-1]
lines += [' }\n face_indices {', ' {},'.format(len(ifacets))]
lines += [' <{0}, {1}, {2}>,'.format(*f) for f in ifacets]
lines[-1] = lines[-1][:-1]
lines += [' }', '}']
return '\n'.join(lines)
def test_normals():
vertices, name = stl.readstl('test/data/cube-txt.stl')
facets, pnts = stl.toindexed(vertices)
ni, nv = stl.normals(facets, pnts)
assert len(ni) == 12 # 6 faces, 2 facets/face.
p = np.arange(6)
assert np.all(ni == np.vstack((p, p)).T.reshape((1, -1)))
assert nv.shape == (6, 3)
def test_normals():
vertices, name = stl.readstl('data/cube-txt.stl')
facets, pnts = stl.toindexed(vertices)
ni, nv = stl.normals(facets, pnts)
assert len(ni) == 12 # 6 faces, 2 facets/face.
p = np.arange(6)
assert np.all(ni == np.vstack((p, p)).T.reshape((1, -1)))
assert nv.shape == (6, 3)
def test_text():
vertices, name = stl.readstl('data/cube-txt.stl')
facets, pnts = stl.toindexed(vertices)
ni, nv = stl.normals(facets, pnts)
res = stl.text('cube_txt', facets, pnts, ni, nv)
res = [ln.strip() for ln in res.splitlines()]
with open('data/cube-txt.stl') as inp:
orig = [ln.strip() for ln in inp.readlines()]
for a, b in zip(orig, res):
assert a == b
def test_read_txt():
vertices, name = stl.readstl('test/data/cube-txt.stl')
assert name == 'cube_txt'
assert vertices.shape == (36, 3)
_, pnts = stl.toindexed(vertices)
assert pnts.shape == (8, 3)
assert np.all(pnts[0] == np.array([0, 0, 1]))
assert np.all(pnts[1] == np.array([1, 0, 1]))
assert np.all(pnts[2] == np.array([0, 1, 1]))
assert np.all(pnts[3] == np.array([1, 1, 1]))
assert np.all(pnts[4] == np.array([1, 0, 0]))
assert np.all(pnts[5] == np.array([0, 0, 0]))
assert np.all(pnts[6] == np.array([1, 1, 0]))
assert np.all(pnts[7] == np.array([0, 1, 0]))
def test_read_txt():
vertices, name = stl.readstl('data/cube-txt.stl')
assert name == 'cube_txt'
assert vertices.shape == (36, 3)
_, pnts = stl.toindexed(vertices)
assert pnts.shape == (8, 3)
assert np.all(pnts[0] == np.array([0, 0, 1]))
assert np.all(pnts[1] == np.array([1, 0, 1]))
assert np.all(pnts[2] == np.array([0, 1, 1]))
assert np.all(pnts[3] == np.array([1, 1, 1]))
assert np.all(pnts[4] == np.array([1, 0, 0]))
assert np.all(pnts[5] == np.array([0, 0, 0]))
assert np.all(pnts[6] == np.array([1, 1, 0]))
assert np.all(pnts[7] == np.array([0, 1, 0]))
def main(argv):
"""Main program.
Keyword arguments:
argv -- command line arguments (without program name!)
"""
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('-t', '--text', action='store_true',
help='print text representation of the file')
parser.add_argument('-b', '--binary', action='store_true',
help='write binary representation of the file')
parser.add_argument('-v', '--version', action='version',
version=__version__)
parser.add_argument('file', nargs='*', help='one or more file names')
args = parser.parse_args(argv)
if not args.file:
parser.print_help()
sys.exit(0)
for fn in args.file:
if not fn.lower().endswith('.stl'):
w = 'The file "{}" is probably not an STL file, skipping.'
print w.format(fn)
continue
try:
vertices, name = stl.readstl(fn)
if args.text or args.binary:
facets, points = stl.toindexed(vertices)
normals, vectors = stl.normals(facets, points)
except ValueError as e:
print fn + ':', e
continue
print "# Information for:", fn
print "# Generated by stlinfo {}".format(__version__)
print "# on {}.".format(time.asctime())
print '# Name: "{}"'.format(name)
print '# Number of facets:', len(vertices)/3
minx, maxx, miny, maxy, minz, maxz = bbox.makebb(vertices)
print '# Bounding box:'
print '# {} ≤ x ≤ {}'.format(minx, maxx)
print '# {} ≤ y ≤ {}'.format(miny, maxy)
print '# {} ≤ z ≤ {}'.format(minz, maxz)
if args.text:
print '# Text representation:'
print stl.text(name, facets, points, normals, vectors)
if args.binary:
on = utils.outname(fn, '.stl', '_bin')
print '# Writing binary represtation to "{}".'.format(on)
with open(on, 'w+b') as of:
of.write(stl.binary(name, facets, points, normals, vectors))
def test_read_bin():
vertices, name = stl.readstl('test/data/cube-bin.stl')
assert name == 'cube_bin'
assert vertices.shape == (36, 3)
_, pnts = stl.toindexed(vertices)
assert pnts.shape == (8, 3)
def test_read_bin():
vertices, name = stl.readstl('data/cube-bin.stl')
assert name == 'cube_bin'
assert vertices.shape == (36, 3)
_, pnts = stl.toindexed(vertices)
assert pnts.shape == (8, 3)
def main(argv):
"""
Entry point for stlinfo.
Arguments:
argv: command line arguments (without program name!)
"""
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('-t',
'--text',
action='store_true',
help='print text representation of the file')
parser.add_argument('-b',
'--binary',
action='store_true',
help='write binary representation of the file')
parser.add_argument(
'-e',
'--encoding',
type=str,
help="encoding for the name of the STL object (default utf-8)",
default='utf-8')
parser.add_argument('-v',
'--version',
action='version',
version=__version__)
parser.add_argument('--log',
default='warning',
choices=['debug', 'info', 'warning', 'error'],
help="logging level (defaults to 'warning')")
parser.add_argument('file', nargs='*', help='one or more file names')
args = parser.parse_args(argv)
logging.basicConfig(level=getattr(logging, args.log.upper(), None),
format='%(levelname)s: %(message)s')
if not args.file:
parser.print_help()
sys.exit(0)
for fn in args.file:
if not fn.lower().endswith('.stl'):
w = 'The file "{}" is probably not an STL file, skipping.'
logging.warning(w.format(fn))
continue
try:
vertices, name = stl.readstl(fn, args.encoding)
if args.text or args.binary:
facets, points = stl.toindexed(vertices)
normals, vectors = stl.normals(facets, points)
except ValueError as e:
logging.error('{}: {}'.format(fn, e))
continue
print("# Information for:", fn)
print("# Generated by stlinfo {}".format(__version__))
print("# on {}.".format(time.asctime()))
print('# Name: "{}"'.format(name))
print('# Number of facets: {:.0f}'.format(len(vertices) / 3))
minx, maxx, miny, maxy, minz, maxz = bbox.makebb(vertices)
print('# Bounding box:')
print('# {} ≤ x ≤ {}'.format(minx, maxx))
print('# {} ≤ y ≤ {}'.format(miny, maxy))
print('# {} ≤ z ≤ {}'.format(minz, maxz))
if args.text:
print('# Text representation:')
print(stl.text(name, facets, points, normals, vectors))
if args.binary:
on = utils.outname(fn, '.stl', '_bin')
print('# Writing binary represtation to "{}".'.format(on))
with open(on, 'w+b') as of:
of.write(stl.binary(name, facets, points, normals, vectors))
def main(argv):
"""
Entry point for stlinfo.
Arguments:
argv: command line arguments (without program name!)
"""
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument(
'-t', '--text', action='store_true', help='print text representation of the file'
)
parser.add_argument(
'-b', '--binary', action='store_true', help='write binary representation of the file'
)
parser.add_argument(
'-e',
'--encoding',
type=str,
help="encoding for the name of the STL object (default utf-8)",
default='utf-8'
)
parser.add_argument('-v', '--version', action='version', version=__version__)
parser.add_argument(
'--log',
default='warning',
choices=['debug', 'info', 'warning', 'error'],
help="logging level (defaults to 'warning')"
)
parser.add_argument('file', nargs='*', help='one or more file names')
args = parser.parse_args(argv)
logging.basicConfig(
level=getattr(logging, args.log.upper(), None), format='%(levelname)s: %(message)s'
)
if not args.file:
parser.print_help()
sys.exit(0)
for fn in args.file:
if not fn.lower().endswith('.stl'):
w = 'The file "{}" is probably not an STL file, skipping.'
logging.warning(w.format(fn))
continue
try:
vertices, name = stl.readstl(fn, args.encoding)
if args.text or args.binary:
facets, points = stl.toindexed(vertices)
normals, vectors = stl.normals(facets, points)
except ValueError as e:
logging.error('{}: {}'.format(fn, e))
continue
print("# Information for:", fn)
print("# Generated by stlinfo {}".format(__version__))
print("# on {}.".format(time.asctime()))
print('# Name: "{}"'.format(name))
print('# Number of facets: {:.0f}'.format(len(vertices) / 3))
minx, maxx, miny, maxy, minz, maxz = bbox.makebb(vertices)
print('# Bounding box:')
print('# {} ≤ x ≤ {}'.format(minx, maxx))
print('# {} ≤ y ≤ {}'.format(miny, maxy))
print('# {} ≤ z ≤ {}'.format(minz, maxz))
if args.text:
print('# Text representation:')
print(stl.text(name, facets, points, normals, vectors))
if args.binary:
on = utils.outname(fn, '.stl', '_bin')
print('# Writing binary represtation to "{}".'.format(on))
with open(on, 'w+b') as of:
of.write(stl.binary(name, facets, points, normals, vectors))