def get_sub_by_name(name, submasters=None):
"""name is a channel or sub nama, submasters is a Submasters object.
If you leave submasters empty, it will use the global instance of
Submasters."""
if not submasters:
submasters = get_global_submasters()
# get_all_sub_names went missing. needs rework
#if name in submasters.get_all_sub_names():
# return submasters.get_sub_by_name(name)
try:
val = int(name)
s = Submaster("#%d" % val, levels={val : 1.0})
return s
except ValueError:
pass
try:
subnum = get_dmx_channel(name)
s = Submaster("'%s'" % name, levels={subnum : 1.0})
return s
except ValueError:
pass
# make an error sub
return Submaster('%s' % name, levels=ValueError)
def eval(self, current, t):
"""current graph is being passed as an optimization. It should be
equivalent to use self.graph in here."""
objs = list(current.objects(self.uri, L9['expression']))
if len(objs) > 1:
raise ValueError("found multiple expressions for %s: %s" %
(self.uri, objs))
expr = current.value(self.uri, L9['expression'])
if not expr:
dispatcher.send("expr_error", sender=self.uri, exc="no expr, using 0")
return 0
glo = self.curveset.globalsdict()
glo['t'] = t
glo = exprglo.exprGlobals(glo, t)
glo['getsub'] = lambda name: self.submasters.get_sub_by_name(name)
glo['chan'] = lambda name: Submaster.Submaster("chan", {get_dmx_channel(name): 1})
try:
self.lasteval = eval(expr, glo)
except Exception,e:
dispatcher.send("expr_error", sender=self.uri, exc=e)
return Submaster.Submaster("zero", {})
def get_dmx_list(self):
leveldict = self.get_levels() # gets levels of sub contents
levels = []
for k, v in leveldict.items():
if v == 0:
continue
try:
dmxchan = get_dmx_channel(k) - 1
except ValueError:
log.error("error trying to compute dmx levels for submaster %s"
% self.name)
raise
if dmxchan >= len(levels):
levels.extend([0] * (dmxchan - len(levels) + 1))
levels[dmxchan] = max(v, levels[dmxchan])
return levels
def chan(name):
return Submaster.Submaster(
name=name,
levels={get_dmx_channel(name) : 1.0})
