Mercurial > code > home > repos > light9
annotate light8/Cue.py @ 59:001646cd5349
all mousewheel events everywhere will now pass up the tree to be caught by
all mousewheel events everywhere will now pass up the tree to be caught by
higher widgets. if things get slow, this might be the problem
| author | drewp |
|---|---|
| date | Tue, 09 Jul 2002 07:36:29 +0000 |
| parents | 3011c1028eb7 |
| children | e5d14320fbd5 |
| rev | line source |
|---|---|
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cfb00e8cc0ea
(22:36:03) drewp: plaese use stronger quotes """ on Cue:1 to help my highlighter
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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: | |
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(22:36:03) drewp: plaese use stronger quotes """ on Cue:1 to help my highlighter
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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 | |
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(22:36:03) drewp: plaese use stronger quotes """ on Cue:1 to help my highlighter
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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 | |
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- Meet Fader. He is going to grow up and be a crossfader some day
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15 |
| 0 | 16 self.name = name |
| 17 self.starttime = starttime | |
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51
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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' | |
| 54 | 32 # print "cue marked with", levels |
| 0 | 33 self.init_levels = levels |
| 34 self.init_time = time | |
| 35 | |
| 36 for fade in self.fades: | |
| 37 subdict = subsetdict(levels, fade.channels_involved()) | |
| 38 fade.start(subdict, time) | |
| 39 def get_levels(self, curtime): | |
| 40 'Returns the current levels' | |
| 41 d = {} | |
| 42 for fade in self.fades: | |
| 43 fade_d = fade.get_levels(curtime) | |
| 44 for ch, lev in fade_d.items(): | |
| 45 d[ch] = max(lev, d.get(ch, 0)) | |
| 46 return d | |
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47 def get_end_levels(self): |
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48 'Returns the final levels' |
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49 d = {} |
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50 for fade in self.fades: |
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51 fade_d = fade.get_end_levels() |
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- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
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52 for ch, lev in fade_d.items(): |
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53 d[ch] = max(lev, d.get(ch, 0)) |
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54 return d |
| 0 | 55 |
| 56 class Fade(Cue): | |
| 57 'See Cue.__doc__' | |
| 53 | 58 def __init__(self, channel, starttime, dur=None, endlevel=0, param=None): |
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59 'Fades are simple Cues' |
| 54 | 60 Cue.__init__(self, "%s -> %.1f" % (channel, endlevel), starttime, dur) |
| 0 | 61 self.channel = channel |
| 62 self.endlevel = endlevel | |
| 63 self.dur = dur | |
| 64 self.param = param | |
| 65 def start(self, levels, time): | |
| 66 'Mark the beginning of the fade' | |
| 54 | 67 # print "fade", self.name, "marked with", levels |
| 0 | 68 self.init_levels = levels |
| 69 self.init_level = levels[self.channel] | |
| 70 self.init_time = time | |
| 71 def channels_involved(self): | |
| 72 'Speaks for itself, I hope' | |
| 73 return [self.channel] | |
| 74 def get_levels(self, curtime): | |
| 75 elapsed = curtime - self.init_time | |
| 76 if elapsed <= self.starttime: | |
| 77 return self.init_levels | |
| 78 elif elapsed >= self.endtime: | |
| 79 return {self.channel : self.endlevel} | |
| 80 else: | |
| 54 | 81 percent = float((curtime - self.init_time) - self.starttime) / \ |
| 82 self.dur | |
| 0 | 83 return {self.channel : self.init_level + |
| 84 percent * (self.endlevel - self.init_level)} | |
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85 def get_end_levels(self): |
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86 return {self.channel : self.endlevel} |
| 0 | 87 |
| 88 if __name__ == '__main__': | |
| 89 f1 = Fade('red', 0, 2, 100) | |
| 90 f2 = Fade('green', 1, 3, 50) | |
| 91 f3 = Fade('blue', 0, 4, 0) | |
| 92 f4 = Fade('clear', 0, 8, 75) | |
| 93 c = Cue("Color shift", 0, 10, f1, f2, f3, f4) | |
| 94 tstart = time() | |
| 95 # note how green is not mentioned -- it goes to 0 | |
| 96 c.start({'red' : 0, 'blue' : 100, 'clear' : 25}, tstart) | |
| 97 while time() - tstart < 15: | |
| 98 curtime = time() | |
| 99 levs = c.get_levels(curtime) | |
| 100 s = '\t'.join(["%s: %d" % (k[0], v) for k, v, in levs.items()]) | |
| 101 print "%.1f" % (curtime - tstart), s |