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baselib.py
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baselib.py
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# --------------------------------------------------------------------------
# Blendyn -- file baselib.py
# Copyright (C) 2015 -- 2021 Andrea Zanoni -- andrea.zanoni@polimi.it
# --------------------------------------------------------------------------
# ***** BEGIN GPL LICENSE BLOCK *****
#
# This file is part of Blendyn, add-on script for Blender.
#
# Blendyn is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Blendyn is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Blendyn. If not, see <http://www.gnu.org/licenses/>.
#
# ***** END GPL LICENCE BLOCK *****
# --------------------------------------------------------------------------
from mathutils import *
from math import *
import bpy
from bpy.props import *
import logging
import numpy as np
import os, csv, atexit, re
from .nodelib import *
from .elementlib import *
from .rfmlib import *
from .componentlib import DEFORMABLE_ELEMENTS
from .logwatcher import *
from .stresslib import *
HAVE_PSUTIL = False
try:
import psutil
HAVE_PSUTIL = True
except ImportError:
pass
try:
from netCDF4 import Dataset
except ImportError:
message = "BLENDYN: could not find netCDF4 module. NetCDF import "\
+ "will be disabled."
print(message)
logging.warning(message)
pass
def parse_input_file(context):
mbs = context.scene.mbdyn
out_file = mbs.input_path
with open(out_file) as of:
reader = csv.reader(of, delimiter=' ', skipinitialspace=True)
while True:
rw = next(reader)
print(rw)
if rw:
first = rw[0].strip()
if first == 'final':
time = rw[2]
try:
time = float(time[:-1])
except ValueError:
mbs.final_time = mbs.ui_time
break
mbs.final_time = time
mbs.ui_time = time
break
if HAVE_PSUTIL:
def kill_mbdyn():
mbdynProc = [var for var in psutil.process_iter() if var.name() == 'mbdyn']
if mbdynProc:
mbdynProc[0].kill()
def get_plot_vars_glob(context):
mbs = context.scene.mbdyn
if mbs.use_netcdf:
ncfile = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.nc')
nc = Dataset(ncfile, 'r')
N = len(nc.variables["time"])
var_list = list()
for var in nc.variables:
m = nc.variables[var].shape
if (m[0] == N) and (var not in mbs.plot_vars.keys()):
plotvar = mbs.plot_vars.add()
plotvar.name = var
def get_plot_engine():
HAVE_MATPLOTLIB = True
HAVE_PYGAL = True
HAVE_BOKEH = True
try:
import matplotlib
except ImportError:
HAVE_MATPLOTLIB = False
try:
import pygal
except ImportError:
HAVE_PYGAL = False
try:
import bokeh
except ImportError:
HAVE_BOKEH = False
is_have_engine = [HAVE_PYGAL, HAVE_MATPLOTLIB, HAVE_BOKEH]
plot_engines = [("PYGAL", "Pygal", "Pygal", '', 2), \
("MATPLOTLIB", "Matplotlib", "Matplotlib", '', 1), \
("BOKEH", "Bokeh", "bokeh", '', 3)]
return [plot_engines[i] for i in range(len(is_have_engine)) if is_have_engine[i]]
def update_driver_variables(self, context):
mbs = bpy.context.scene.mbdyn
pvar = mbs.plot_vars[mbs.plot_var_index]
if pvar.as_driver:
dvar = mbs.driver_vars.add()
dvar.name = pvar.name
dvar.variable = pvar.name
dvar.components = pvar.plot_comps
else:
idx = [idx for idx in range(len(mbs.driver_vars)) if mbs.driver_vars[idx].name == pvar.name]
mbs.driver_vars.remove(idx[0])
## Function that sets up the data for the import process
def setup_import(filepath, context):
mbs = context.scene.mbdyn
mbs.file_path, mbs.file_basename = path_leaf(filepath)
if filepath[-2:] == 'nc':
nc = Dataset(filepath, "r")
mbs.use_netcdf = True
mbs.num_rows = 0
mbs.num_nodes = nc.dimensions['struct_node_labels_dim'].size
mbs.num_timesteps = nc.dimensions['time'].size
try:
NVecs = [dim for dim in nc.dimensions if 'iNVec_out' in dim]
for ii in range(0, len(NVecs)):
eigsol = mbs.eigensolutions.add()
eigsol.index = int(NVecs[ii][4:-10])
try:
eigsol.step = nc.variables['eig.' + str(ii) + '.step'][0]
eigsol.time = nc.variables['eig.' + str(ii) + '.time'][0]
eigsol.dCoef = nc.variables['eig.' + str(ii) + '.dCoef'][0]
except KeyError:
# Maybe we are dealing with old output?
eigsol.step = nc.variables['eig.step'][eigsol.index]
eigsol.time = nc.variables['eig.time'][eigsol.index]
eigsol.dCoef = nc.variables['eig.dCoef'][eigsol.index]
eigsol.iNVec = nc.dimensions[NVecs[ii]].size
eigsol.curr_eigmode = 1
except KeyError as err:
message = 'BLENDYN::setup_import(): ' + \
'no valid eigenanalysis results found'
print(message)
logging.info(message)
pass
# by default, we remove the log files on exit
atexit.register(delete_log)
get_plot_vars_glob(context)
else:
mbs.use_netcdf = False
mbs.num_rows = file_len(filepath)
if mbs.num_rows < 0:
return {'FILE_ERROR'}
return {'FINISHED'}
# -----------------------------------------------------------
# end of setup_import() function
def number_modal_modes(context):
"""Check for total modal modes in .mod file"""
mbs = context.scene.mbdyn
if os.path.isfile(os.path.join(os.path.dirname(mbs.file_path), mbs.file_basename + '.mod')):
mod_file = os.path.join(os.path.dirname(mbs.file_path), mbs.file_basename + '.mod')
with open(mod_file) as mdf:
reader_mod = csv.reader(mdf, delimiter = ' ', skipinitialspace = True)
rw_mod = next(reader_mod)
first_mode = rw_mod[0]
num_modal_modes = 0
while True:
num_modal_modes += 1
try:
rw_mod = next(reader_mod)
except StopIteration:
break
mode = rw_mod[0]
if mode == first_mode:
break
mbs.num_modal_modes = num_modal_modes
else:
mbs.num_modal_modes = 0
pass
#---------------------------------------------------------------
# end of number_modal_modes() function
def no_output(context):
"""Check for nodes with no output"""
mbs = context.scene.mbdyn
nd = mbs.nodes
if mbs.use_netcdf:
ncfile = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.nc')
nc = Dataset(ncfile, "r")
log_nodes = list(map(lambda x: int(x[5:]), nd.keys()))
for node in log_nodes:
try:
X = nc.variables['node.struct.' + str(node) + '.X']
nd['node_' + str(node)].output = True
except KeyError:
# output disabled for this node
pass
else:
# .mov filename
mov_file = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.mov')
try:
with open(mov_file) as mf:
reader = csv.reader(mf, delimiter = ' ', skipinitialspace = True)
rw = next(reader)
first_node = int(rw[0])
num_nodes = 0
while True:
node = [node for node in nd if node.int_label == int(rw[0])]
num_nodes += 1
if node:
node[0].output = True
rw = next(reader)
if int(rw[0]) == first_node:
break
mbs.num_nodes = num_nodes
except StopIteration: # EOF
pass
# -----------------------------------------------------------
# end of no_output() function
def parse_log_file(context):
""" Parses the .log file and calls parse_elements() to add elements
to the elements dictionary and parse_node() to add nodes to
the nodes dictionary """
# utility rename
mbs = context.scene.mbdyn
nd = mbs.nodes
ed = mbs.elems
rd = mbs.references
is_init_nd = len(nd) == 0
is_init_ed = len(ed) == 0
for node_name in nd.keys():
nd[node_name].is_imported = False
for elem_name in ed.keys():
ed[elem_name].is_imported = False
log_file = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.log')
out_file = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.out')
rfm_file = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.rfm')
# Debug message to console
print("Blendyn::parse_log_file(): Trying to read nodes and elements from file: "\
+ log_file)
ret_val = {''}
# Check if collections are already present (not the first import).
# if not, create them
try:
ncol = bpy.data.collections['mbdyn.nodes']
except KeyError:
ncol = bpy.data.collections.new(name = 'mbdyn.nodes')
bpy.context.scene.collection.children.link(ncol)
try:
ecol = bpy.data.collections['mbdyn.elements']
except KeyError:
ecol = bpy.data.collections.new(name = 'mbdyn.elements')
bpy.context.scene.collection.children.link(ecol)
# create elements children collections if they are not already there
try:
aecol = ecol.children['aerodynamic']
except KeyError:
aecol = bpy.data.collections.new(name = 'aerodynamic')
ecol.children.link(aecol)
try:
becol = ecol.children['beams']
except KeyError:
becol = bpy.data.collections.new(name = 'beams')
ecol.children.link(becol)
# elements sections sub-collection
try:
scol = ecol.children['sections']
except KeyError:
scol = bpy.data.collections.new(name = 'sections')
ecol.children.link(scol)
try:
bocol = ecol.children['bodies']
except KeyError:
bocol = bpy.data.collections.new(name = 'bodies')
ecol.children.link(bocol)
try:
fcol = ecol.children['forces']
except KeyError:
fcol = bpy.data.collections.new(name = 'forces')
ecol.children.link(fcol)
try:
jcol = ecol.children['joints']
except KeyError:
jcol = bpy.data.collections.new(name = 'joints')
ecol.children.link(jcol)
try:
pcol = ecol.children['plates']
except KeyError:
pcol = bpy.data.collections.new(name = 'plates')
ecol.children.link(pcol)
try:
with open(log_file) as lf:
# open the reader, skipping initial whitespaces
b_nodes_consistent = True
b_elems_consistent = True
reader = csv.reader(lf, delimiter=' ', skipinitialspace=True)
entry = ""
while entry[:-1] != "Symbol table":
# get the next row
rw = next(reader)
entry = rw[0]
ii = 0
while (rw[ii][-1] != ':') and (ii < min(3, (len(rw) - 1))):
ii = ii + 1
entry = entry + " " + rw[ii]
if ii == min(3, (len(rw) - 1)):
print("Blendyn::parse_log_file(): row does not contain an element definition. Skipping...")
elif entry == "structural node:":
print("Blendyn::parse_log_file(): Found a structural node.")
b_nodes_consistent = b_nodes_consistent * (parse_node(context, rw))
else:
print("Blendyn::parse_log_file(): Found " + entry[:-1] + " element.")
b_elems_consistent = b_elems_consistent * parse_elements(context, entry[:-1], rw)
if (is_init_nd and is_init_ed) or (b_nodes_consistent*b_elems_consistent):
ret_val = {'FINISHED'}
elif (not(b_nodes_consistent) and not(is_init_nd)) and (not(b_elems_consistent) and not(is_init_ed)):
ret_val = {'MODEL_INCONSISTENT'}
elif (not(b_nodes_consistent) and not(is_init_nd)) and (b_elems_consistent):
ret_val = {'NODES_INCONSISTENT'}
elif (b_nodes_consistent) and (not(b_elems_consistent) and not(is_init_ed)):
ret_val = {'ELEMS_INCONSISTENT'}
else:
ret_val = {'FINISHED'}
except IOError:
print("Blendyn::parse_log_file(): Could not locate the file " + log_file + ".")
ret_val = {'LOG_NOT_FOUND'}
pass
except StopIteration:
print("Blendyn::parse_log_file() Reached the end of .log file")
pass
except TypeError:
# TypeError will be thrown if parse node exits with a {}, indicating an
# unsupported rotation parametrization (e.g. euler313)
ret_val = {'ROTATION_ERROR'}
pass
del_nodes = [var for var in nd.keys() if nd[var].is_imported == False]
del_elems = [var for var in ed.keys() if ed[var].is_imported == False]
obj_names = [nd[var].blender_object for var in del_nodes]
obj_names += [ed[var].blender_object for var in del_elems]
obj_names = list(filter(None, obj_names))
nn = len(nd)
# Account for nodes with no output
if nn:
no_output(context)
mbs.min_node_import = nd[0].int_label
mbs.max_node_import = nd[0].int_label
for ndx in range(1, len(nd)):
if nd[ndx].int_label < mbs.min_node_import:
mbs.min_node_import = nd[ndx].int_label
elif nd[ndx].int_label > mbs.max_node_import:
mbs.max_node_import = nd[ndx].int_label
if mbs.use_netcdf:
ncfile = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.nc')
nc = Dataset(ncfile, "r")
mbs.num_timesteps = len(nc.variables["time"])
else:
mbs.num_nodes = nn
mbs.num_timesteps = int(mbs.num_rows/mbs.num_nodes)
mbs.is_ready = True
ret_val = {'FINISHED'}
else:
ret_val = {'NODES_NOT_FOUND'}
pass
en = len(ed)
if en:
mbs.min_elem_import = ed[0].int_label
mbs.max_elem_import = ed[0].int_label
for edx in range(1, len(ed)):
if ed[edx].int_label < mbs.min_elem_import:
mbs.min_elem_import = ed[edx].int_label
elif ed[edx].int_label > mbs.max_elem_import:
mbs.max_elem_import = ed[edx].int_label
try:
with open(out_file) as of:
reader = csv.reader(of, delimiter = ' ', skipinitialspace = True)
while True:
if next(reader)[0] == 'Step':
mbs.time_step = float(next(reader)[3])
if (mbs.use_netcdf):
mbs.end_time = nc.variables["time"][-1]
mbs.start_time = nc.variables["time"][0]
break
except FileNotFoundError:
print("Blendyn::parse_log_file(): Could not locate the file " + out_file)
ret_val = {'OUT_NOT_FOUND'}
pass
except StopIteration:
print("Blendyn::parse_log_file(): Reached the end of .out file")
pass
except IOError:
print("Blendyn::parse_log_file(): Could not read the file " + out_file)
pass
try:
with open(rfm_file) as rfm:
reader = csv.reader(rfm, delimiter = ' ', skipinitialspace = True)
for rfm_row in reader:
if len(rfm_row) and rfm_row[0].strip() != '#':
parse_reference_frame(rfm_row, rd)
# create the reference frames collection if it is not already there
try:
rcol = bpy.data.collections['mbdyn.references']
except KeyError:
rcol = bpy.data.collections.new(name = 'mbdyn.references')
bpy.context.scene.collection.children.link(rcol)
except StopIteration:
pass
except FileNotFoundError:
print("Blendyn::parse_out_file(): Could not locate the file " + rfm_file)
pass
except IOError:
print("Blendyn::parse_out_file(): Could not read the file " + rfm_file)
pass
if not(mbs.use_netcdf):
mbs.end_time = (mbs.num_timesteps - 1) * mbs.time_step
return ret_val, obj_names
# -----------------------------------------------------------
# end of parse_log_file() function
def path_leaf(path, keep_extension = False):
""" Helper function to strip filename of path """
head, tail = ntpath.split(path)
tail1 = (tail or ntpath.basename(head))
if keep_extension:
return path.replace(tail1, ''), tail1
else:
return path.replace(tail1, ''), os.path.splitext(tail1)[0]
# -----------------------------------------------------------
# end of path_leaf() function
def file_len(filepath):
""" Function to count the number of rows in a file """
try:
with open(filepath) as f:
for kk, ll in enumerate(f):
pass
return kk + 1
except UnboundLocalError:
return 0
except IsADirectoryError:
return 0
# -----------------------------------------------------------
# end of file_len() function
def assign_labels(context):
""" Function that parses the .log file and assigns \
the string labels it can find to the respective MBDyn objects
--
'standard' labels: assigns only the labels that match a
specific pattern
'free' labels: assigns the labels directly.
contributed by Louis Gagnon
-- see Github Issue #39
--
"""
mbs = context.scene.mbdyn
nd = mbs.nodes
ed = mbs.elems
rd = mbs.references
labels_changed = False
log_file = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.log')
if mbs.free_labels:
obj_list = [nd, ed, rd]
set_strings_any = [" const integer", \
" integer"]
else:
set_strings_node = [" const integer Node_", \
" integer Node_", \
" const integer node_", \
" integer node_", \
" const integer NODE_", \
" integer NODE_"]
set_strings_joint = [" const integer Joint_", \
" integer Joint_"
" const integer joint_", \
" integer joint_", \
" const integer JOINT_", \
" integer JOINT_"]
set_strings_beam = [" const integer Beam_", \
" integer Beam_", \
" const integer beam_", \
" integer beam_", \
" const integer BEAM_", \
" integer BEAM_"]
set_strings_refs = [" const integer Ref_", \
" integer Ref_", \
" const integer ref_", \
" integer ref_", \
" const integer REF_", \
" integer REF_", \
" const integer Reference_", \
" integer Reference_", \
" const integer reference_", \
" integer reference_", \
" const integer REFERENCE_", \
" integer REFERENCE_"]
def assign_label(line, entity_type, set_string, the_dict):
line_str = line.rstrip()
eq_idx = line_str.find('=') + 1
label_int = int(line_str[eq_idx:].strip())
if mbs.free_labels:
label_str = line_str[len(set_string):(eq_idx -1)].strip()
else:
label_str = line_str[(len(set_string) - len(entity_type) - 1):(eq_idx-1)].strip()
for item in the_dict:
if item.int_label == label_int:
if item.string_label != label_str:
item.string_label = label_str
message = "BLENDYN::assign_label(): \nset_string:{}\nline_str:{}\nlabel_str:{}".format(set_string, line_str, label_str)
print(message)
baseLogger.info(message)
return True
break
return False
try:
if mbs.free_labels:
with open(log_file) as lf:
for line in lf:
found = False
for set_string in set_strings_any:
if set_string in line:
for the_obj in obj_list:
labels_changed += (assign_label(line, '', set_string, the_obj))
found = True
break
else:
with open(log_file) as lf:
for line in lf:
found = False
for set_string in set_strings_node:
if set_string in line:
labels_changed += (assign_label(line, 'node', set_string, nd))
found = True
break
if not(found):
for set_string in set_strings_joint:
if set_string in line:
labels_changed += (assign_label(line, 'joint', set_string, ed))
found = True
break
if not(found):
for set_string in set_strings_beam:
if set_string in line:
labels_changed += (assign_label(line, 'beam', set_string, ed))
found = True
break
if not (found):
for set_string in set_strings_refs:
if set_string in line:
labels_changed += (assign_label(line, 'ref', set_string, rd))
found = True
break
except IOError:
print("Blendyn::assign_labels(): can't read from file {}, \
sticking with default labeling...".format(log_file))
return {'FILE_NOT_FOUND'}
if labels_changed:
return {'LABELS_UPDATED'}
else:
return {'NOTHING_DONE'}
# -----------------------------------------------------------
# end of assign_labels() function
def update_label(self, context):
# utility renaming
obj = context.view_layer.objects.active
nd = context.scene.mbdyn.nodes
# Search for int label and assign corresponding string label, if found.
# If not, signal it by assign the "not found" label
node_string_label = "not_found"
obj.mbdyn.is_assigned = False
if obj.mbdyn.type == 'node.struct':
try:
key = 'node_' + str(obj.mbdyn.int_label)
node_string_label = nd[key].string_label
nd[key].blender_object = obj.name
obj.mbdyn.is_assigned = True
obj.mbdyn.string_label = node_string_label
ret_val = {}
if obj.mbdyn.is_assigned:
ret_val = update_parametrization(obj)
if ret_val == 'ROT_NOT_SUPPORTED':
message = type(self).__name__ + "::update_label(): "\
+ "Rotation parametrization not supported, node " \
+ obj.mbdyn.string_label
self.report({'ERROR'}, message)
logging.error(message)
elif ret_val == 'LOG_NOT_FOUND':
message = type(self).__name__ + "::update_label(): "\
+ "MBDyn .log file not found"
self.report({'ERROR'}, message)
logging.error(message)
except KeyError:
message = type(self).__name__ + "::update_label(): "\
+ "Node not found"
self.report({'ERROR'}, message)
logging.error(message)
pass
return
# -----------------------------------------------------------
# end of update_label() function
def update_end_time(self, context):
mbs = context.scene.mbdyn
if mbs.use_netcdf:
ncfile = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.nc')
nc = Dataset(ncfile, "r")
if (mbs.end_time - nc.variables["time"][-1]) > mbs.time_step:
mbs.end_time = nc.variables["time"][-1]
elif mbs.end_time > mbs.num_timesteps * mbs.time_step:
mbs.end_time = mbs.num_timesteps * mbs.time_step
# -----------------------------------------------------------
# end of update_end_time() function
def update_start_time(self, context):
mbs = context.scene.mbdyn
if mbs.use_netcdf:
ncfile = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.nc')
nc = Dataset(ncfile, "r")
if mbs.start_time < nc.variables["time"][0]:
mbs.start_time = nc.variables["time"][0]
elif mbs.start_time >= mbs.num_timesteps * mbs.time_step:
mbs.start_time = (mbs.num_timesteps - 1) * mbs.time_step
# -----------------------------------------------------------
# end of update_start_time() function
def remove_oldframes(context):
""" Clears the scene of keyframes of current simulation """
mbs = context.scene.mbdyn
node_names = mbs.nodes.keys()
obj_names = [bpy.context.scene.mbdyn.nodes[var].blender_object for var in node_names]
obj_names = list(filter(lambda v: v != 'none', obj_names))
obj_names = list(filter(lambda v: v in bpy.data.objects.keys(), obj_names))
if len(obj_names) > 0:
obj_list = [bpy.data.objects[var] for var in obj_names]
for obj in obj_list:
obj.animation_data_clear()
# -----------------------------------------------------------
# end of remove_oldframes() function
def hide_or_delete(obj_names, missing):
obj_names = list(filter(lambda v: v != 'none', obj_names))
obj_list = [bpy.data.objects[var] for var in obj_names]
if missing == "HIDE":
obj_list = [bpy.data.objects[var] for var in obj_names]
for obj in obj_list:
obj.hide_set(state = True)
if missing == "DELETE":
bpy.ops.object.select_all(action='DESELECT')
for obj in obj_list:
obj.select_set(state = True)
bpy.ops.object.delete()
def set_motion_paths_mov(context):
""" Parses the .mov file and .mod file then sets the nodes motion paths """
# Debug message
print("Blendyn::set_motion_paths_mov(): Setting Motion Paths using .mov output...")
# utility renaming
scene = context.scene
mbs = scene.mbdyn
nd = mbs.nodes
ed = mbs.elems
wm = context.window_manager
if not(mbs.is_ready):
return {'CANCELLED'}
# .mov filename
mov_file = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.mov')
have_mod_file = True
if os.path.isfile(os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.mod')):
mod_file = os.path.join(os.path.dirname(mbs.file_path), \
mbs.file_basename + '.mod')
else:
have_mod_file = False
# Debug message
if have_mod_file:
print("Blendyn::set_motion_paths_mov(): Reading from file: {0} and {1}".format(mov_file, mod_file))
else:
print("Blendyn::set_motion_paths_mov(): Reading from file: {0}".format(mov_file))
# total number of frames to be animated
scene.frame_start = int(mbs.start_time/(mbs.time_step * mbs.load_frequency))
scene.frame_end = int(mbs.end_time/(mbs.time_step * mbs.load_frequency)) + 1
loop_start = int(scene.frame_start * mbs.load_frequency)
loop_end = int(scene.frame_end * mbs.load_frequency)
# list of animatable Blender object types
anim_types = ['MESH', 'ARMATURE', 'EMPTY']
# Cycle to establish which objects to animate
anim_objs = dict()
wm.progress_begin(scene.frame_start, scene.frame_end)
if have_mod_file:
try:
with open(mod_file) as mdf:
with open(mov_file) as mvf :
reader_mov = csv.reader(mvf, delimiter=' ', skipinitialspace=True)
reader_mod = csv.reader(mdf, delimiter=' ', skipinitialspace=True)
# first loop: we establish which object to animate
scene.frame_current = scene.frame_start
# skip to the first timestep to import
for ndx in range(int(mbs.start_time * mbs.num_nodes / mbs.time_step)):
next(reader_mov)
for ndx in range(int(mbs.start_time * mbs.num_modal_modes / mbs.time_step)):
next(reader_mod)
first_mov = []
second_mov = []
for ndx in range(mbs.num_nodes):
rw_mov = np.array(next(reader_mov)).astype(float)
first_mov.append(rw_mov)
second_mov.append(rw_mov)
try:
obj_name = nd['node_' + str(int(rw_mov[0]))].blender_object
if obj_name != 'none' and nd['node_' + str(int(rw_mov[0]))].output:
anim_objs[rw_mov[0]] = obj_name
obj = bpy.data.objects[obj_name]
obj.select_set(state = True)
set_obj_locrot_mov(obj, rw_mov)
except KeyError:
pass
dg = bpy.context.evaluated_depsgraph_get()
dg.update()
# Initial position of modal nodes
first_mod = []
second_mod = []
flag = False # Whether we set up the node positions in the space
mode_counter = 0
for mdx in range(mbs.num_modal_modes):
mode_counter += 1
rw_mod = np.array(next(reader_mod)).astype(float)
first_mod.append(rw_mod)
second_mod.append(rw_mod)
elem_int_label, mode_int_label = str(rw_mod[0]).split('.')
elem = ed['modal_'+ elem_int_label]
elem_node = nd['node_'+ str(elem.nodes[0].int_label)]
elem_nodeOJB = bpy.data.objects[elem_node.blender_object]
for node in elem.modal_node:
try:
obj_name = node.blender_object
if obj_name != 'none':
obj = bpy.data.objects[obj_name]
obj.select_set(state=True)
if not flag:
obj.location = elem_nodeOJB.matrix_world @ Vector(
(node.relative_pos[0] + rw_mod[1] * node.mode[mode_int_label].mode_shape[0],
node.relative_pos[1] + rw_mod[1] * node.mode[mode_int_label].mode_shape[1],
node.relative_pos[2] + rw_mod[1] * node.mode[mode_int_label].mode_shape[2],
1)).to_3d()
else:
obj.location += elem_nodeOJB.matrix_world @ Vector(
(rw_mod[1] * node.mode[mode_int_label].mode_shape[0],
rw_mod[1] * node.mode[mode_int_label].mode_shape[1],
rw_mod[1] * node.mode[mode_int_label].mode_shape[2],
1)).to_3d() - elem_nodeOJB.location
try:
if mode_counter == len(elem.modal_node[0].mode):
obj.keyframe_insert(data_path="location")
obj.rotation_euler = elem_nodeOJB.rotation_euler
obj.keyframe_insert(data_path="rotation_euler")
except KeyError:
pass
except KeyError:
pass
if not flag:
flag = True
try:
if mode_counter == len(elem.modal_node[0].mode):
mode_counter = 0
flag = False
except KeyError:
pass
# main for loop, from second frame to last
freq = mbs.load_frequency
Nskip_mov = 0
Nskip_mod = 0
for idx, frame in enumerate(np.arange(loop_start + freq, loop_end, freq)):
scene.frame_current += 1
message = "BLENDYN::set_motion_paths_mov(): Animating frame {}".format(scene.frame_current)
print(message)
logging.info(message)
# skip (freq - 1)*N lines
if freq > 1:
Nskip_mov = (int(frame) - int(frame - freq) - 2) * mbs.num_nodes
Nskip_mod = (int(frame) - int(frame - freq) - 2) * mbs.num_modal_modes
if Nskip_mov >= 0:
for ii in range(Nskip_mov):
next(reader_mov)
for ndx in range(mbs.num_nodes):
first_mov[ndx] = np.array(next(reader_mov)).astype(float)
if Nskip_mod >= 0:
for ii in range(Nskip_mod):
next(reader_mod)
for ndx in range(mbs.num_modal_modes):
first_mod[ndx] = np.array(next(reader_mod)).astype(float)
if freq > 1:
frac = np.ceil(frame) - frame
for ndx in range(mbs.num_nodes):
second_mov[ndx] = np.array(next(reader_mov)).astype(float)
for ndx in range(mbs.num_modal_modes):
second_mod[ndx] = np.array(next(reader_mod)).astype(float)
for ndx in range(mbs.num_nodes):
try:
answer = frac*first_mov[ndx] + (1 - frac)*second_mov[ndx]
obj = bpy.data.objects[anim_objs[round(answer[0])]]
obj.select_set(state = True)
set_obj_locrot_mov(obj, answer)
except KeyError:
pass
dg = bpy.context.evaluated_depsgraph_get()
dg.update()
flag = False # Whether we set up the node positions in the space
mode_counter = 0
for mdx in range(mbs.num_modal_modes):
mode_counter += 1
elem_int_label, mode_int_label = str(first_mod[mdx][0]).split('.')
elem = ed['modal_' + elem_int_label]
elem_node = nd['node_' + str(elem.nodes[0].int_label)]
elem_nodeOJB = bpy.data.objects[elem_node.blender_object]
answer = frac * first_mod[mdx] + (1 - frac) * second_mod[mdx]
for node in elem.modal_node:
try:
obj_name = node.blender_object
if obj_name != 'none':
obj = bpy.data.objects[obj_name]
obj.select_set(state=True)
if not flag:
obj.location = elem_nodeOJB.matrix_world @ Vector(
(node.relative_pos[0] + answer[1] *
node.mode[mode_int_label].mode_shape[0],
node.relative_pos[1] + answer[1] *
node.mode[mode_int_label].mode_shape[1],
node.relative_pos[2] + answer[1] *
node.mode[mode_int_label].mode_shape[2], 1)).to_3d()
else:
obj.location += elem_nodeOJB.matrix_world @ Vector(
(answer[1] * node.mode[mode_int_label].mode_shape[0],
answer[1] * node.mode[mode_int_label].mode_shape[1],
answer[1] * node.mode[mode_int_label].mode_shape[2],
1)).to_3d() - elem_nodeOJB.location
try:
if mode_counter == len(elem.modal_node[0].mode):
obj.keyframe_insert(data_path="location")
obj.rotation_euler = elem_nodeOJB.rotation_euler
obj.keyframe_insert(data_path="rotation_euler")
except KeyError:
pass
except KeyError:
pass
if not flag:
flag = True
try:
if mode_counter == len(elem.modal_node[0].mode):
mode_counter = 0
flag = False
except KeyError:
pass
first_mod = second_mod
first_mov = second_mov
else:
for ndx in range(mbs.num_nodes):
rw_mov = first_mov[ndx]
obj = bpy.data.objects[anim_objs[round(rw_mov[0])]]
obj.select_set(state = True)