light9 Changeset - 62c47c3a90cb

Changeset - 62c47c3a90cb

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dmcc - 22 years ago 2002-07-07 13:33:19

util.py: subsetdict added. see docs
util.py: subsetdict added. see docs
Cue.py: Cues and Fades created. see docs

2 files changed with 22 insertions and 57 deletions:

light8/Cue.py

light8/util.py

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light8/Cue.py

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-"""And that's my cue to exit(0)..."""
+'''And that's my cue to exit(0)...'''
 from time import time
-from util import subsetdict, scaledict
 from util import subsetdict
 class Cue:
-    """Cues are groups of fades.  They can tell you the current levels at a
+    '''Cues are groups of fades.  They can tell you the current levels at a
     given time.  They contain Fades, which are actually children of Cue,
     meaning that Cues can contain Cues.  This is similar to the Light9 concept
     of Cues and Fades, but without all the Nodes."""
     def __init__(self, name, starttime, dur, *fades):
     of Cues and Fades, but without all the Nodes.'''
     def __init__(self, name, starttime, endtime, *fades):
         'Create a cue'
         endtime = starttime + dur
         dur = endtime - starttime
         self.name = name
         self.starttime = starttime
         self.dur = dur
         self.endtime = endtime
         self.fades = fades
         self.cuestart = None
@@ @@ -29,7 +24,6 @@ class Cue: @@
         return c.keys()
     def start(self, levels, time):
         'Mark the beginning of a cue'
         # print "cue marked with", levels
         self.init_levels = levels
         self.init_time = time
@@ @@ -44,27 +38,23 @@ class Cue: @@
             for ch, lev in fade_d.items():
                 d[ch] = max(lev, d.get(ch, 0))
         return d
     def get_end_levels(self):
         'Returns the final levels'
         d = {}
         for fade in self.fades:
             fade_d = fade.get_end_levels()
             for ch, lev in fade_d.items():
                 d[ch] = max(lev, d.get(ch, 0))
         return d
 class Fade(Cue):
     'See Cue.__doc__'
     def __init__(self, channel, starttime, dur=None, endlevel=0, param=None):
         'Fades are simple Cues'
         Cue.__init__(self, "%s -> %.1f" % (channel, endlevel), starttime, dur)
     def __init__(self, channel, starttime, endtime=None, endlevel=0, dur=None,
                  param=None):
         'Only specify an end time or a duration'
         if not endtime:
             endtime = starttime + dur
         else:
             dur = endtime - starttime
         Cue.__init__(self, "%s -> %f" % (channel, endlevel), starttime, endtime)
         self.channel = channel
         self.endlevel = endlevel
         self.dur = dur
         self.param = param
     def start(self, levels, time):
         'Mark the beginning of the fade'
         # print "fade", self.name, "marked with", levels
         self.init_levels = levels
         self.init_level = levels[self.channel]
         self.init_time = time
@@ @@ -78,41 +68,9 @@ class Fade(Cue): @@
         elif elapsed >= self.endtime:
             return {self.channel : self.endlevel}
         else:
             percent = float((curtime - self.init_time) - self.starttime) / \
                         self.dur
             percent = float(elapsed) / self.dur
             return {self.channel : self.init_level +
                 percent * (self.endlevel - self.init_level)}
     def get_end_levels(self):
         return {self.channel : self.endlevel}
 class SimpleCue(Cue):
     'See Cue.__doc__'
     def __init__(self, name, target, dur, **info):
         Cue.__init__(self, name, 0, dur)
         self.target = target
         self.dur = dur
         self.info = info
     def start(self, levels, time):
         'Mark the beginning of the fade'
         self.init_levels = levels
         self.init_time = time
     def channels_involved(self):
         'Speaks for itself, I hope'
         return self.target.keys()
     def get_levels(self, curtime):
         elapsed = curtime - self.init_time
         if elapsed >= self.endtime:
             return self.target
         else:
             percent = float((curtime - self.init_time) - self.starttime) / \
                         self.dur
             return dict([(n, self.init_levels[n] +
                 percent * (lev - self.init_levels[n]))
                     for n, lev in self.target])
             # return {self.channel : self.init_level +
                 # percent * (self.endlevel - self.init_level)}
     def get_end_levels(self):
         return self.target
 if __name__ == '__main__':
     f1 = Fade('red', 0, 2, 100)

light8/util.py

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 def maxes(dicts):
     '''
     ({'a' : 5, 'b' : 9}, {'a' : 10, 'b' : 943})
@@ @@ -14,3 +13,11 @@ def scaledict(d,scl): @@
     return dict([(k,v*scl) for k,v in d.items()])
 # class Setting that scales, maxes
 def subsetdict(d, dkeys, default=0):
     'Subset of dictionary d: only the keys in dkeys'
     # print 'd', d, 'dkeys', dkeys
     newd = {} # dirty variables!
     for k in dkeys:
         newd[k] = d.get(k, default)
     return newd

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