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# -*- coding: utf-8 -*-
#
# ***** BEGIN GPL LICENSE BLOCK *****
#
# --------------------------------------------------------------------------
# Blender 2.5 Extensions Framework
# --------------------------------------------------------------------------
#
# Authors:
# Doug Hammond
#
# This program 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 2
# of the License, or (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ***** END GPL LICENCE BLOCK *****
#
import configparser
import datetime
import os
import tempfile
import threading
import bpy
"""List of possibly appropriate paths to load/save addon config from/to"""
config_paths = []
if bpy.utils.user_resource('CONFIG', '') != "": config_paths.append(bpy.utils.user_resource('CONFIG', '', create=True))
if bpy.utils.user_resource('SCRIPTS', '') != "": config_paths.append(bpy.utils.user_resource('SCRIPTS', '', create=True))
# want to scan other script paths in reverse order, since the user path comes last
sp = [p for p in bpy.utils.script_paths() if p != '']
sp.reverse()
config_paths.extend(sp)
"""This path is set at the start of export, so that calls to
path_relative_to_export() can make all exported paths relative to
this one.
"""
export_path = '';
def path_relative_to_export(p):
"""Return a path that is relative to the export path"""
global export_path
p = filesystem_path(p)
ep = os.path.dirname(export_path)
if os.sys.platform[:3] == "win":
# Prevent an error whereby python thinks C: and c: are different drives
if p[1] == ':': p = p[0].lower() + p[1:]
if ep[1] == ':': ep = ep[0].lower() + ep[1:]
try:
relp = os.path.relpath(p, ep)
except ValueError: # path on different drive on windows
relp = p
return relp.replace('\\', '/')
def filesystem_path(p):
"""Resolve a relative Blender path to a real filesystem path"""
if p.startswith('//'):
pout = bpy.path.abspath(p)
else:
pout = os.path.realpath(p)
return pout.replace('\\', '/')
# TODO: - somehow specify TYPES to get/set from config
def find_config_value(module, section, key, default):
"""Attempt to find the configuration value specified by string key
in the specified section of module's configuration file. If it is
not found, return default.
"""
global config_paths
fc = []
for p in config_paths:
if os.path.exists(p) and os.path.isdir(p) and os.access(p, os.W_OK):
fc.append( '/'.join([p, '%s.cfg' % module]))
if len(fc) < 1:
print('Cannot find %s config file path' % module)
return default
cp = configparser.SafeConfigParser()
cfg_files = cp.read(fc)
if len(cfg_files) > 0:
try:
val = cp.get(section, key)
if val == 'true':
return True
elif val == 'false':
return False
else:
return val
except:
return default
else:
return default
def write_config_value(module, section, key, value):
"""Attempt to write the configuration value specified by string key
in the specified section of module's configuration file.
"""
global config_paths
fc = []
for p in config_paths:
if os.path.exists(p) and os.path.isdir(p) and os.access(p, os.W_OK):
fc.append( '/'.join([p, '%s.cfg' % module]))
if len(fc) < 1:
raise Exception('Cannot find a writable path to store %s config file' %
module)
cp = configparser.SafeConfigParser()
cfg_files = cp.read(fc)
if not cp.has_section(section):
cp.add_section(section)
if value == True:
cp.set(section, key, 'true')
elif value == False:
cp.set(section, key, 'false')
else:
cp.set(section, key, value)
if len(cfg_files) < 1:
cfg_files = fc
fh=open(cfg_files[0],'w')
cp.write(fh)
fh.close()
return True
def scene_filename():
"""Construct a safe scene filename, using 'untitled' instead of ''"""
filename = os.path.splitext(os.path.basename(bpy.data.filepath))[0]
if filename == '':
filename = 'untitled'
return bpy.path.clean_name(filename)
def temp_directory():
"""Return the system temp directory"""
return tempfile.gettempdir()
def temp_file(ext='tmp'):
"""Get a temporary filename with the given extension. This function
will actually attempt to create the file."""
tf, fn = tempfile.mkstemp(suffix='.%s'%ext)
os.close(tf)
return fn
class TimerThread(threading.Thread):
"""Periodically call self.kick(). The period of time in seconds
between calling is given by self.KICK_PERIOD, and the first call
may be delayed by setting self.STARTUP_DELAY, also in seconds.
self.kick() will continue to be called at regular intervals until
self.stop() is called. Since this is a thread, calling self.join()
may be wise after calling self.stop() if self.kick() is performing
a task necessary for the continuation of the program.
The object that creates this TimerThread may pass into it data
needed during self.kick() as a dict LocalStorage in __init__().
"""
STARTUP_DELAY = 0
KICK_PERIOD = 8
active = True
timer = None
LocalStorage = None
def __init__(self, LocalStorage=dict()):
threading.Thread.__init__(self)
self.LocalStorage = LocalStorage
def set_kick_period(self, period):
"""Adjust the KICK_PERIOD between __init__() and start()"""
self.KICK_PERIOD = period + self.STARTUP_DELAY
def stop(self):
"""Stop this timer. This method does not join()"""
self.active = False
if self.timer is not None:
self.timer.cancel()
def run(self):
"""Timed Thread loop"""
while self.active:
self.timer = threading.Timer(self.KICK_PERIOD, self.kick_caller)
self.timer.start()
if self.timer.isAlive(): self.timer.join()
def kick_caller(self):
"""Intermediary between the kick-wait-loop and kick to allow
adjustment of the first KICK_PERIOD by STARTUP_DELAY
"""
if self.STARTUP_DELAY > 0:
self.KICK_PERIOD -= self.STARTUP_DELAY
self.STARTUP_DELAY = 0
self.kick()
def kick(self):
"""Sub-classes do their work here"""
pass
def format_elapsed_time(t):
"""Format a duration in seconds as an HH:MM:SS format time"""
td = datetime.timedelta(seconds=t)
min = td.days*1440 + td.seconds/60.0
hrs = td.days*24 + td.seconds/3600.0
return '%i:%02i:%02i' % (hrs, min%60, td.seconds%60)
def getSequenceTexturePath(it, f):
import bpy.path
import os.path
import string
fd = it.image_user.frame_duration
fs = it.image_user.frame_start
fo = it.image_user.frame_offset
cyclic = it.image_user.use_cyclic
ext = os.path.splitext(it.image.filepath)[-1]
fb = bpy.path.display_name_from_filepath(it.image.filepath)
dn = os.path.dirname(it.image.filepath)
rf = fb[::-1]
nl = 0
for i in range (len(fb)):
if rf[i] in string.digits:
nl += 1
else:
break
head = fb[:len(fb)-nl]
fnum = f
if fs != 1:
if f != fs:
fnum -= (fs-1)
elif f == fs:
fnum = 1
if fnum <= 0:
if cyclic:
fnum = fd - abs(fnum) % fd
else:
fnum = 1
elif fnum > fd:
if cyclic:
fnum = fnum % fd
else:
fnum = fd
fnum += fo
return dn + "/" + head + str(fnum).rjust(nl, "0") + ext
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