def nastran_to_tecplot_filename(bdf_filename, tecplot_filename, log=None):
model = BDF(log=log)
model.read_bdf(bdf_filename)
# tecplot = nastran_to_tecplot(model)
#log.info('card_count = %s' % model.card_count)
nnodes = len(model.nodes)
nodes = zeros((nnodes, 3), dtype='float64')
elements = []
i = 0
nodeid_to_i_map = {}
for node_id, node in sorted(iteritems(model.nodes)):
xyz = node.get_position()
nodes[i, :] = xyz
nodeid_to_i_map[node_id] = i
i += 1
assert len(model.nodes) == i, 'model.nodes=%s i=%s' % (len(model.nodes), i)
for eid, element in sorted(iteritems(model.elements)):
if element.type in ['CTETRA']:
n1, n2, n3, n4 = element.node_ids
i1, i2, i3, i4 = nodeid_to_i_map[n1], nodeid_to_i_map[
n2], nodeid_to_i_map[n3], nodeid_to_i_map[n4]
elements.append([i1, i2, i3, i4, i4, i4, i4, i4])
elif element.type in ['CPENTA']:
n1, n2, n3, n4, n5, n6 = element.node_ids
i1, i2, i3, i4, i5, i6 = (nodeid_to_i_map[n1], nodeid_to_i_map[n2],
nodeid_to_i_map[n3], nodeid_to_i_map[n4],
nodeid_to_i_map[n5], nodeid_to_i_map[n6])
elements.append([i1, i2, i3, i4, i5, i6, i6, i6])
elif element.type in ['CPYRAM']:
n1, n2, n3, n4, n5 = element.node_ids
i1, i2, i3, i4, i5 = (nodeid_to_i_map[n1], nodeid_to_i_map[n2],
nodeid_to_i_map[n3], nodeid_to_i_map[n4],
nodeid_to_i_map[n5])
elements.append([i1, i2, i3, i4, i5, i5, i5, i5])
elif element.type in ['CHEXA']:
n1, n2, n3, n4, n5, n6, n7, n8 = element.node_ids
i1, i2, i3, i4, i5, i6, i7, i8 = (nodeid_to_i_map[n1],
nodeid_to_i_map[n2],
nodeid_to_i_map[n3],
nodeid_to_i_map[n4],
nodeid_to_i_map[n5],
nodeid_to_i_map[n6],
nodeid_to_i_map[n7],
nodeid_to_i_map[n8])
elements.append([i1, i2, i3, i4, i5, i6, i7, i8])
else:
self.log.info('skip etype=%r' % element.type)
self.log.info(element)
elements = array(elements, dtype='int32')
tecplot = Tecplot()
tecplot.xyz = nodes
tecplot.hexa_elements = elements
tecplot.write_tecplot(tecplot_filename)
tecplot.results = array([], dtype='float32')
return tecplot
def nastran_to_tecplot_filename(bdf_filename, tecplot_filename, log=None):
model = BDF(log=log)
model.read_bdf(bdf_filename)
# tecplot = nastran_to_tecplot(model)
#log.info('card_count = %s' % model.card_count)
nnodes = len(model.nodes)
nodes = zeros((nnodes, 3), dtype='float64')
elements = []
i = 0
nodeid_to_i_map = {}
for node_id, node in sorted(iteritems(model.nodes)):
xyz = node.get_position()
nodes[i, :] = xyz
nodeid_to_i_map[node_id] = i
i += 1
assert len(model.nodes) == i, 'model.nodes=%s i=%s' % (len(model.nodes), i)
for eid, element in sorted(iteritems(model.elements)):
if element.type in ['CTETRA']:
n1, n2, n3, n4 = element.node_ids
i1, i2, i3, i4 = nodeid_to_i_map[n1], nodeid_to_i_map[n2], nodeid_to_i_map[n3], nodeid_to_i_map[n4]
elements.append([i1, i2, i3, i4,
i4, i4, i4, i4])
elif element.type in ['CPENTA']:
n1, n2, n3, n4, n5, n6 = element.node_ids
i1, i2, i3, i4, i5, i6 = (
nodeid_to_i_map[n1], nodeid_to_i_map[n2], nodeid_to_i_map[n3], nodeid_to_i_map[n4],
nodeid_to_i_map[n5], nodeid_to_i_map[n6])
elements.append([i1, i2, i3, i4,
i5, i6, i6, i6])
elif element.type in ['CPYRAM']:
n1, n2, n3, n4, n5 = element.node_ids
i1, i2, i3, i4, i5 = (
nodeid_to_i_map[n1], nodeid_to_i_map[n2], nodeid_to_i_map[n3], nodeid_to_i_map[n4],
nodeid_to_i_map[n5])
elements.append([i1, i2, i3, i4,
i5, i5, i5, i5])
elif element.type in ['CHEXA']:
n1, n2, n3, n4, n5, n6, n7, n8 = element.node_ids
i1, i2, i3, i4, i5, i6, i7, i8 = (
nodeid_to_i_map[n1], nodeid_to_i_map[n2], nodeid_to_i_map[n3], nodeid_to_i_map[n4],
nodeid_to_i_map[n5], nodeid_to_i_map[n6], nodeid_to_i_map[n7], nodeid_to_i_map[n8])
elements.append([i1, i2, i3, i4,
i5, i6, i7, i8])
else:
self.log.info('skip etype=%r' % element.type)
self.log.info(element)
elements = array(elements, dtype='int32')
tecplot = Tecplot()
tecplot.xyz = nodes
tecplot.hexa_elements = elements
tecplot.write_tecplot(tecplot_filename)
tecplot.results = array([], dtype='float32')
return tecplot
def cart3d_to_tecplot(cart3d_filename, tecplot_filename):
"""
Converts Cart3d to Tecplot
"""
model = Cart3D()
model.read_cart3d(cart3d_filename)
tecplot = Tecplot()
tecplot.xyz = model.points
tecplot.tri_elements = model.elements
tecplot.write_tecplot(tecplot_filename, adjust_nids=False)
return tecplot
def ugrid_to_tecplot(ugrid_model, tecplot_filename=None, log=None, debug=False):
"""
Converts a UGRID to a Tecplot ASCII file.
Parameters
----------
ugrid_filename : varies
str : the input UGRID filename
UGRID : the UGRID object
tecplot_filename : str
the output Tecplot filename
log : logger; default=None
a logger object
"""
nnodes = len(ugrid_model.nodes)
nodes = zeros((nnodes, 3), dtype='float64')
ugrid_model.check_hanging_nodes()
elements = []
ntets = len(ugrid_model.tets)
non_tets = len(ugrid_model.penta5s) + len(ugrid_model.penta6s) + len(ugrid_model.hexas)
assert ntets + non_tets > 0, 'nsolids=%s' % (ntets + non_tets)
tecplot = Tecplot(log=log, debug=debug)
tecplot.xyz = ugrid_model.nodes
if ntets and non_tets == 0:
elements = ugrid_model.tets
tecplot.tet_elements = elements - 1
elif non_tets:
for element in ugrid_model.tets:
n1, n2, n3, n4 = element
elements.append([n1, n2, n3, n4,
n4, n4, n4, n4])
for element in ugrid_model.penta5s:
n1, n2, n3, n4, n5 = element
elements.append([n1, n2, n3, n4,
n5, n5, n5, n5])
for element in ugrid_model.penta6s:
n1, n2, n3, n4, n5, n6 = element
elements.append([n1, n2, n3, n4,
n5, n6, n6, n6])
for element in ugrid_model.hexas:
n1, n2, n3, n4, n5, n6, n7, n8 = element
elements.append([n1, n2, n3, n4,
n5, n6, n7, n8])
elements = array(elements, dtype='int32') - 1
tecplot.hexa_elements = elements
else:
raise RuntimeError()
if tecplot_filename is not None:
tecplot.write_tecplot(tecplot_filename)
return tecplot
def merge_tecplot_files(tecplot_filenames,
tecplot_filename_out=None,
log=None):
"""merges one or more tecplot files"""
assert isinstance(tecplot_filenames,
(list, tuple)), type(tecplot_filenames)
assert len(tecplot_filenames) > 0, tecplot_filenames
xyz = []
tri_elements = []
quad_elements = []
tet_elements = []
hexa_elements = []
results = []
nnodes = 0
model = Tecplot(log=log)
if len(tecplot_filenames) == 1:
model.read_tecplot(tecplot_filenames[0])
if tecplot_filename_out is not None:
model.write_tecplot(tecplot_filename_out)
return model
for tecplot_filename in tecplot_filenames:
model.log.info('reading %s' % tecplot_filename)
model.read_tecplot(tecplot_filename)
xyz.append(model.xyz)
if len(model.tri_elements):
tri_elements.append(model.tri_elements + nnodes)
if len(model.quad_elements):
quad_elements.append(model.quad_elements + nnodes)
if len(model.tet_elements):
tet_elements.append(model.tet_elements + nnodes)
if len(model.hexa_elements):
hexa_elements.append(model.hexa_elements + nnodes)
results.append(model.results)
nnodes += model.nnodes
model.xyz = vstack(xyz)
if tri_elements:
model.tri_elements = vstack(tri_elements)
if quad_elements:
model.quad_elements = vstack(quad_elements)
if tet_elements:
model.tet_elements = vstack(tet_elements)
if hexa_elements:
model.hexa_elements = vstack(hexa_elements)
model.results = vstack(results)
if tecplot_filename_out is not None:
model.write_tecplot(tecplot_filename_out)
return model
def cart3d_to_tecplot(cart3d_filename, tecplot_filename, log=None, debug=False):
"""
Converts Cart3d to Tecplot
"""
if isinstance(cart3d_filename, Cart3D):
model = cart3d_filename
else:
model = read_cart3d(cart3d_filename, log=log, debug=debug)
tecplot = Tecplot()
tecplot.xyz = model.points
tecplot.tri_elements = model.elements
tecplot.write_tecplot(tecplot_filename, adjust_nids=False)
return tecplot
def merge_tecplot_files(tecplot_filenames, tecplot_filename_out=None, log=None):
assert isinstance(tecplot_filenames, (list, tuple)), type(tecplot_filenames)
assert len(tecplot_filenames) > 0, tecplot_filenames
xyz = []
tri_elements = []
quad_elements = []
tet_elements = []
hexa_elements = []
results = []
nnodes = 0
model = Tecplot(log=log)
if len(tecplot_filenames) == 1:
model.read_tecplot(tecplot_filenames[0])
if tecplot_filename_out is not None:
model.write_tecplot(tecplot_filename_out)
return model
for tecplot_filename in tecplot_filenames:
model.log.info('reading %s' % tecplot_filename)
model.read_tecplot(tecplot_filename)
xyz.append(model.xyz)
if len(model.tri_elements):
tri_elements.append(model.tri_elements + nnodes)
if len(model.quad_elements):
quad_elements.append(model.quad_elements + nnodes)
if len(model.tet_elements):
tet_elements.append(model.tet_elements + nnodes)
if len(model.hexa_elements):
hexa_elements.append(model.hexa_elements + nnodes)
results.append(model.results)
nnodes += model.nnodes
model.xyz = vstack(xyz)
if tri_elements:
model.tri_elements = vstack(tri_elements)
if quad_elements:
model.quad_elements = vstack(quad_elements)
if tet_elements:
model.tet_elements = vstack(tet_elements)
if hexa_elements:
model.hexa_elements = vstack(hexa_elements)
model.results = vstack(results)
if tecplot_filename_out is not None:
model.write_tecplot(tecplot_filename_out)
return model
def cart3d_to_tecplot(cart3d_filename,
tecplot_filename,
log=None,
debug=False):
"""
Converts Cart3d to Tecplot
"""
if isinstance(cart3d_filename, Cart3D):
model = cart3d_filename
else:
model = read_cart3d(cart3d_filename, log=log, debug=debug)
tecplot = Tecplot()
tecplot.xyz = model.points
tecplot.tri_elements = model.elements
tecplot.write_tecplot(tecplot_filename, adjust_nids=False)
return tecplot
def cart3d_to_tecplot(cart3d_filename,
tecplot_filename,
log=None,
debug=False):
"""
Converts Cart3d to Tecplot
"""
if isinstance(cart3d_filename, Cart3D):
model = cart3d_filename
else:
model = read_cart3d(cart3d_filename, log=log, debug=debug)
tecplot = Tecplot()
tecplot.log = model.log
zone = Zone(model.log)
zone.headers_dict['VARIABLES'] = ['X', 'Y', 'Z']
zone.xyz = model.points
zone.tri_elements = model.elements + 1
tecplot.zones = [zone]
tecplot.write_tecplot(tecplot_filename, adjust_nids=False)
return tecplot
zone.variables = variables
tecplot_model.zones = [zone]
return tecplot_model
def nastran_tables_to_tecplot_filenames(
tecplot_filename_base: str,
bdf_model: BDF,
case,
variables: Optional[List[str]] = None,
ivars: Optional[List[int]] = None) -> None:
if variables is None:
variables = case.headers
if ivars is None:
ivars = np.arange(0, len(variables))
tecplot_model = nastran_table_to_tecplot(bdf_model, case, variables)
zone = tecplot_model.zones[0]
for itime, time in enumerate(case._times):
if '%' in tecplot_filename_base:
tecplot_filename = tecplot_filename_base % time
else:
tecplot_filename = tecplot_filename_base
# you can't combine the two lines or it transposes it...
nodal_results = case.data[itime, :, :]
zone.nodal_results = nodal_results[:, ivars]
tecplot_model.write_tecplot(tecplot_filename,
res_types=None,
adjust_nids=False)
def nastran_to_tecplot_filename(bdf_filename, tecplot_filename, log=None, debug=False):
"""converts a BDF file to Tecplot format; supports solid elements"""
model = BDF(log=log, debug=debug)
model.read_bdf(bdf_filename)
# tecplot = nastran_to_tecplot(model)
#log.info('card_count = %s' % model.card_count)
nnodes = len(model.nodes)
nodes = np.zeros((nnodes, 3), dtype='float64')
elements = []
i = 0
nodeid_to_i_map = {}
for node_id, node in sorted(model.nodes.items()):
xyz = node.get_position()
nodes[i, :] = xyz
nodeid_to_i_map[node_id] = i
i += 1
assert len(model.nodes) == i, 'model.nodes=%s i=%s' % (len(model.nodes), i)
for unused_eid, element in sorted(model.elements.items()):
if element.type in ['CTETRA']:
n1, n2, n3, n4 = element.node_ids
i1, i2, i3, i4 = (nodeid_to_i_map[n1], nodeid_to_i_map[n2],
nodeid_to_i_map[n3], nodeid_to_i_map[n4])
elements.append([i1, i2, i3, i4,
i4, i4, i4, i4])
elif element.type in ['CPENTA']:
n1, n2, n3, n4, n5, n6 = element.node_ids
i1, i2, i3, i4, i5, i6 = (
nodeid_to_i_map[n1], nodeid_to_i_map[n2], nodeid_to_i_map[n3], nodeid_to_i_map[n4],
nodeid_to_i_map[n5], nodeid_to_i_map[n6])
elements.append([i1, i2, i3, i4,
i5, i6, i6, i6])
elif element.type in ['CPYRAM']:
n1, n2, n3, n4, n5 = element.node_ids
i1, i2, i3, i4, i5 = (
nodeid_to_i_map[n1], nodeid_to_i_map[n2], nodeid_to_i_map[n3], nodeid_to_i_map[n4],
nodeid_to_i_map[n5])
elements.append([i1, i2, i3, i4,
i5, i5, i5, i5])
elif element.type in ['CHEXA']:
n1, n2, n3, n4, n5, n6, n7, n8 = element.node_ids
i1, i2, i3, i4, i5, i6, i7, i8 = (
nodeid_to_i_map[n1], nodeid_to_i_map[n2], nodeid_to_i_map[n3], nodeid_to_i_map[n4],
nodeid_to_i_map[n5], nodeid_to_i_map[n6], nodeid_to_i_map[n7], nodeid_to_i_map[n8])
elements.append([i1, i2, i3, i4,
i5, i6, i7, i8])
else:
model.log.info('skip etype=%r' % element.type)
model.log.info(element)
elements = np.array(elements, dtype='int32')
tecplot = Tecplot(log=model.log)
zone = Zone(model.log)
zone.headers_dict['VARIABLES'] = ['X', 'Y', 'Z']
zone.xyz = nodes
zone.hexa_elements = elements
zone.nodal_results = np.array([], dtype='float32')
tecplot.zones = [zone]
tecplot.write_tecplot(tecplot_filename)
return tecplot
def ugrid_to_tecplot(ugrid_filename,
tecplot_filename=None,
log=None,
debug=False):
"""
Converts a UGRID to a Tecplot ASCII file.
Parameters
----------
ugrid_filename : varies
str : the input UGRID filename
UGRID : the UGRID object
tecplot_filename : str
the output Tecplot filename
log : logger; default=None
a logger object
debug : bool; default=False
developer debug
Returns
-------
tecplot_model : Tecplot()
the Tecplot object
"""
ugrid_model = get_ugrid_model(ugrid_filename, log=log, debug=debug)
#nnodes = len(ugrid_model.nodes)
#nodes = zeros((nnodes, 3), dtype='float64')
ugrid_model.check_hanging_nodes()
elements = []
ntets = len(ugrid_model.tets)
non_tets = len(ugrid_model.penta5s) + len(ugrid_model.penta6s) + len(
ugrid_model.hexas)
assert ntets + non_tets > 0, 'nsolids=%s' % (ntets + non_tets)
tecplot = Tecplot(log=ugrid_model.log, debug=debug)
zone = Zone(ugrid_model.log)
zone.headers_dict['VARIABLES'] = ['X', 'Y', 'Z']
zone.xyz = ugrid_model.nodes
if ntets and non_tets == 0:
elements = ugrid_model.tets
zone.tet_elements = elements - 1
elif non_tets:
for element in ugrid_model.tets:
n1, n2, n3, n4 = element
elements.append([n1, n2, n3, n4, n4, n4, n4, n4])
for element in ugrid_model.penta5s:
n1, n2, n3, n4, n5 = element
elements.append([n1, n2, n3, n4, n5, n5, n5, n5])
for element in ugrid_model.penta6s:
n1, n2, n3, n4, n5, n6 = element
elements.append([n1, n2, n3, n4, n5, n6, n6, n6])
for element in ugrid_model.hexas:
n1, n2, n3, n4, n5, n6, n7, n8 = element
elements.append([n1, n2, n3, n4, n5, n6, n7, n8])
elements = np.array(elements, dtype='int32') - 1
zone.hexa_elements = elements
else:
raise RuntimeError()
if tecplot_filename is not None:
tecplot.write_tecplot(tecplot_filename)
tecplot.zones = [zone]
return tecplot, zone
