def meta_generate(n_tracks, fn, win_size):
from gMiner.manipulate import fusion
tracks = n_tracks
sentinel = (sys.maxint, sys.maxint, 0.0)
tracks = [fusion(t) for t in tracks]
tracks = [common.sentinelize(t, sentinel) for t in tracks]
N = len(tracks)
init = [tracks[i].next() for i in range(N)]
for i in xrange(N-1,-1,-1):
if init[i] == sentinel: # empty track
N-=1
tracks.pop(i)
init.pop(i)
available_tracks = range(N-1,-1,-1)
activity = [False]*N
current = []
current.extend([(init[i][0],i) for i in range(N)])
current.extend([(init[i][1],i) for i in range(N)])
current.sort()
start = current[0][0]
while current[0][0] == start:
activity[current[0][1]] = True
z = current.pop(0)
k=1
while available_tracks:
# load *win_size* bp in memory
to_remove = []
for i in available_tracks:
a = [0,0]
limit = k*win_size
while a[1] < limit:
a = tracks[i].next()
if a == sentinel:
to_remove.append(i)
break
current.append((a[0],i))
current.append((a[1],i))
for i in to_remove:
available_tracks.remove(i)
current.sort()
# calculate boolean values for start-next interval
while current and current[0][0] < limit:
next = current[0][0]
res = fn(activity)
if res:
yield (start,next,'',0.0,0)
while current and current[0][0] == next:
i = current[0][1]
activity[i] = not(activity[i])
z = current.pop(0)
start = next
k+=1
def generate(**kwargs):
from gMiner.manipulate import fusion
for f in fusion(meta_generate(**kwargs)): yield f