Mercurial > code > home > repos > light9
annotate light8/Cue.py @ 53:032b2b67bc10
result of July 7th on-site editing
| author | dmcc |
|---|---|
| date | Mon, 08 Jul 2002 14:31:20 +0000 |
| parents | 71489bb71528 |
| children | 3011c1028eb7 |
| rev | line source |
|---|---|
|
46
cfb00e8cc0ea
(22:36:03) drewp: plaese use stronger quotes """ on Cue:1 to help my highlighter
dmcc
parents:
45
diff
changeset
|
1 """And that's my cue to exit(0)...""" |
| 0 | 2 from time import time |
| 45 | 3 from util import subsetdict |
| 0 | 4 |
| 5 class Cue: | |
|
46
cfb00e8cc0ea
(22:36:03) drewp: plaese use stronger quotes """ on Cue:1 to help my highlighter
dmcc
parents:
45
diff
changeset
|
6 """Cues are groups of fades. They can tell you the current levels at a |
| 0 | 7 given time. They contain Fades, which are actually children of Cue, |
| 8 meaning that Cues can contain Cues. This is similar to the Light9 concept | |
|
46
cfb00e8cc0ea
(22:36:03) drewp: plaese use stronger quotes """ on Cue:1 to help my highlighter
dmcc
parents:
45
diff
changeset
|
9 of Cues and Fades, but without all the Nodes.""" |
| 53 | 10 def __init__(self, name, starttime, dur, *fades): |
| 0 | 11 'Create a cue' |
| 53 | 12 |
| 13 endtime = starttime + dur | |
| 14 dur = endtime - starttime | |
|
51
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
15 |
| 0 | 16 self.name = name |
| 17 self.starttime = starttime | |
|
51
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
18 self.dur = dur |
| 0 | 19 self.endtime = endtime |
| 20 self.fades = fades | |
| 21 self.cuestart = None | |
| 22 self.init_levels = None | |
| 23 def channels_involved(self): | |
| 24 'Return which channels are involved. This is important for marking.' | |
| 25 c = {} | |
| 26 for fade in self.fades: | |
| 27 for f_chan in fade.channels_involved(): | |
| 28 c[f_chan] = 1 | |
| 29 return c.keys() | |
| 30 def start(self, levels, time): | |
| 31 'Mark the beginning of a cue' | |
| 32 self.init_levels = levels | |
| 33 self.init_time = time | |
| 34 | |
| 35 for fade in self.fades: | |
| 36 subdict = subsetdict(levels, fade.channels_involved()) | |
| 37 fade.start(subdict, time) | |
| 38 def get_levels(self, curtime): | |
| 39 'Returns the current levels' | |
| 40 d = {} | |
| 41 for fade in self.fades: | |
| 42 fade_d = fade.get_levels(curtime) | |
| 43 for ch, lev in fade_d.items(): | |
| 44 d[ch] = max(lev, d.get(ch, 0)) | |
| 45 return d | |
|
51
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
46 def get_end_levels(self): |
|
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
47 'Returns the final levels' |
|
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
48 d = {} |
|
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
49 for fade in self.fades: |
|
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
50 fade_d = fade.get_end_levels() |
|
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
51 for ch, lev in fade_d.items(): |
|
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
52 d[ch] = max(lev, d.get(ch, 0)) |
|
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
53 return d |
| 0 | 54 |
| 55 class Fade(Cue): | |
| 56 'See Cue.__doc__' | |
| 53 | 57 def __init__(self, channel, starttime, dur=None, endlevel=0, param=None): |
|
51
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
58 'Fades are simple Cues' |
| 53 | 59 Cue.__init__(self, "%s -> %f" % (channel, endlevel), starttime, dur) |
| 0 | 60 self.channel = channel |
| 61 self.endlevel = endlevel | |
| 62 self.dur = dur | |
| 63 self.param = param | |
| 64 def start(self, levels, time): | |
| 65 'Mark the beginning of the fade' | |
| 66 self.init_levels = levels | |
| 67 self.init_level = levels[self.channel] | |
| 68 self.init_time = time | |
| 69 def channels_involved(self): | |
| 70 'Speaks for itself, I hope' | |
| 71 return [self.channel] | |
| 72 def get_levels(self, curtime): | |
| 73 elapsed = curtime - self.init_time | |
| 74 if elapsed <= self.starttime: | |
| 75 return self.init_levels | |
| 76 elif elapsed >= self.endtime: | |
| 77 return {self.channel : self.endlevel} | |
| 78 else: | |
| 45 | 79 percent = float(elapsed) / self.dur |
| 0 | 80 return {self.channel : self.init_level + |
| 81 percent * (self.endlevel - self.init_level)} | |
|
51
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
82 def get_end_levels(self): |
|
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
46
diff
changeset
|
83 return {self.channel : self.endlevel} |
| 0 | 84 |
| 85 if __name__ == '__main__': | |
| 86 f1 = Fade('red', 0, 2, 100) | |
| 87 f2 = Fade('green', 1, 3, 50) | |
| 88 f3 = Fade('blue', 0, 4, 0) | |
| 89 f4 = Fade('clear', 0, 8, 75) | |
| 90 c = Cue("Color shift", 0, 10, f1, f2, f3, f4) | |
| 91 tstart = time() | |
| 92 # note how green is not mentioned -- it goes to 0 | |
| 93 c.start({'red' : 0, 'blue' : 100, 'clear' : 25}, tstart) | |
| 94 while time() - tstart < 15: | |
| 95 curtime = time() | |
| 96 levs = c.get_levels(curtime) | |
| 97 s = '\t'.join(["%s: %d" % (k[0], v) for k, v, in levs.items()]) | |
| 98 print "%.1f" % (curtime - tstart), s |