def chase(t, ontime=0.5, offset=0.2, onval=1.0,
offval=0.0, names=None, combiner=max, random=False):
"""names is list of URIs. returns a submaster that chases through
the inputs"""
if random:
r = random_mod.Random(random)
names = names[:]
r.shuffle(names)
chase_vals = chase_logic(t, ontime, offset, onval, offval, names, combiner)
lev = {}
for uri, value in chase_vals.items():
try:
dmx = Patch.dmx_from_uri(uri)
except KeyError:
log.info(("chase includes %r, which doesn't resolve to a dmx chan" %
uri))
continue
lev[dmx] = value
return Submaster.Submaster(name="chase" ,levels=lev)
def stack(t, names=None, fade=0):
"""names is list of URIs. returns a submaster that stacks the the inputs
fade=0 makes steps, fade=1 means each one gets its full fraction
of the time to fade in. Fades never...
"""
frac = 1.0 / len(names)
lev = {}
for i, uri in enumerate(names):
if t >= (i + 1) * frac:
try:
dmx = Patch.dmx_from_uri(uri)
except KeyError:
log.info(("stack includes %r, which doesn't resolve to a dmx chan"%
uri))
continue
lev[dmx] = 1
else:
break
return Submaster.Submaster(name="stack", levels=lev)
