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effecteval names its new curve after the sub you drop on it Ignore-this: e1d00b8519515373d846ac78dfbd95d1
author Drew Perttula <drewp@bigasterisk.com>
date Thu, 29 May 2014 08:06:15 +0000
parents a2081b9adfe4
children b370618ce723
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1 #!bin/python
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2 from run_local import log
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3 from twisted.internet import reactor, task
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4 from twisted.internet.defer import inlineCallbacks
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5 import cyclone.web, cyclone.websocket, cyclone.httpclient
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6 import sys, optparse, logging, subprocess, json, re, time, traceback
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7 from rdflib import URIRef, Literal
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8
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9 sys.path.append(".")
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10 from light9 import networking, showconfig, Submaster, dmxclient
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11 from light9.rdfdb.syncedgraph import SyncedGraph
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12 from light9.curvecalc.curve import Curve
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13 from light9.namespaces import L9, DCTERMS, RDF, RDFS
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14 from light9.rdfdb.patch import Patch
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15
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16 sys.path.append("/my/proj/homeauto/lib")
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17 sys.path.append("/home/drewp/projects/homeauto/lib")
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18 from cycloneerr import PrettyErrorHandler
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19
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20 class EffectEdit(cyclone.web.RequestHandler):
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21 def get(self):
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22 self.write(open("light9/effecteval/effect.html").read())
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23
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24 class SongEffects(PrettyErrorHandler, cyclone.web.RequestHandler):
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25 def post(self):
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26 song = URIRef(self.get_argument('uri'))
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27 drop = URIRef(self.get_argument('drop'))
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28 ctx = song
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29 now = time.time()
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30 effect = song + "/effect/e-%f" % now
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31 curve = song + "/curve/c-%f" % now
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32
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33 with self.settings.graph.currentState(
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34 tripleFilter=(drop, RDFS.label, None)) as g:
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35 dropSubLabel = g.label(drop)
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36
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37 self.settings.graph.patch(Patch(addQuads=[
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38 (song, L9['curve'], curve, ctx),
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39 (song, L9['effect'], effect, ctx),
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40 (effect, RDF.type, L9['Effect'], ctx),
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41 (effect, L9['code'],
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42 Literal('out = sub(%s, intensity=%s)' % (drop.n3(), curve.n3())),
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43 ctx),
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44 (curve, RDF.type, L9['Curve'], ctx),
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45 (curve, RDFS.label, Literal('sub %s' % dropSubLabel), ctx),
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46 (curve, L9['points'], Literal('0 0'), ctx),
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47 ]))
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48
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49 class SongEffectsUpdates(cyclone.websocket.WebSocketHandler):
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50 def connectionMade(self, *args, **kwargs):
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51 self.graph = self.settings.graph
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52 self.graph.addHandler(self.updateClient)
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53
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54 def updateClient(self):
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55 # todo: abort if client is gone
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56 playlist = self.graph.value(showconfig.showUri(), L9['playList'])
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57 songs = list(self.graph.items(playlist))
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58 out = []
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59 for s in songs:
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60 out.append({'uri': s, 'label': self.graph.label(s)})
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61 out[-1]['effects'] = sorted(self.graph.objects(s, L9['effect']))
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62 self.sendMessage({'songs': out})
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63
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64
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65 class EffectUpdates(cyclone.websocket.WebSocketHandler):
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66 """
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67 stays alive for the life of the effect page
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68 """
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69 def connectionMade(self, *args, **kwargs):
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70 log.info("websocket opened")
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71 self.uri = URIRef(self.get_argument('uri'))
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72 self.sendMessage({'hello': repr(self)})
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73
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74 self.graph = self.settings.graph
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75 self.graph.addHandler(self.updateClient)
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76
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77 def updateClient(self):
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78 # todo: if client has dropped, abort and don't get any more
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79 # graph updates
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80 self.sendMessage({'code': self.graph.value(self.uri, L9['code'])})
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81
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82 def connectionLost(self, reason):
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83 log.info("websocket closed")
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84
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85 def messageReceived(self, message):
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86 log.info("got message %s" % message)
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87 # write a patch back to the graph
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88
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89 def uriFromCode(s):
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90 # i thought this was something a graph could do with its namespace manager
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91 if s.startswith('sub:'):
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92 return URIRef('http://light9.bigasterisk.com/show/dance2014/sub/' + s[4:])
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93 if s.startswith('song1:'):
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94 return URIRef('http://ex/effect/song1/' + s[6:])
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95 if (s[0], s[-1]) == ('<', '>'):
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96 return URIRef(s[1:-1])
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97 raise NotImplementedError
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98
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99 class EffectNode(object):
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100 def __init__(self, graph, uri):
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101 self.graph, self.uri = graph, uri
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102 # this is not expiring at the right time, when an effect goes away
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103 self.graph.addHandler(self.prepare)
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104
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105 def prepare(self):
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106 self.code = self.graph.value(self.uri, L9['code'])
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107 if self.code is None:
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108 raise ValueError("effect %s has no code" % self.uri)
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109 m = re.match(r'^out = sub\((.*?), intensity=(.*?)\)', self.code)
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110 if not m:
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111 raise NotImplementedError
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112 subUri = uriFromCode(m.group(1))
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113 subs = Submaster.get_global_submasters(self.graph)
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114 self.sub = subs.get_sub_by_uri(subUri)
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115
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116 intensityCurve = uriFromCode(m.group(2))
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117 self.curve = Curve(uri=intensityCurve)
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118
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119 # read from disk ok? how do we know to reread? start with
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120 # mtime. the mtime check could be done occasionally so on
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121 # average we read at most one curve's mtime per effectLoop.
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122
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123 pts = self.graph.value(intensityCurve, L9['points'])
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124 if pts is None:
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125 log.info("curve %r has no points" % intensityCurve)
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126 else:
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127 self.curve.set_from_string(pts)
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128
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129
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130 def eval(self, songTime):
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131 # consider http://waxeye.org/ for a parser that can be used in py and js
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132 level = self.curve.eval(songTime)
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133 scaledSubs = self.sub * level
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134 return scaledSubs
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135
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136
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137 class EffectEval(PrettyErrorHandler, cyclone.web.RequestHandler):
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138 @inlineCallbacks
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139 def get(self):
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140 # return dmx list for that effect
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141 uri = URIRef(self.get_argument('uri'))
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142 response = yield cyclone.httpclient.fetch(
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143 networking.musicPlayer.path('time'))
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144 songTime = json.loads(response.body)['t']
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145
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146 node = EffectNode(self.settings.graph, uri)
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147 outSub = node.eval(songTime)
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148 self.write(json.dumps(outSub.get_dmx_list()))
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149
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150
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151 # Completely not sure where the effect background loop should
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152 # go. Another process could own it, and get this request repeatedly:
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153 class SongEffectsEval(PrettyErrorHandler, cyclone.web.RequestHandler):
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154 def get(self):
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155 song = URIRef(self.get_argument('song'))
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156 effects = effectsForSong(self.settings.graph, song)
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157 raise NotImplementedError
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158 self.write(maxDict(effectDmxDict(e) for e in effects))
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159 # return dmx dict for all effects in the song, already combined
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160
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161 # Or, we could own that loop, like this:
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162 @inlineCallbacks
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163 def effectLoop(graph):
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164 t1 = time.time()
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165 try:
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166 response = json.loads((yield cyclone.httpclient.fetch(
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167 networking.musicPlayer.path('time'))).body)
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168 if response['song'] is not None:
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169 song = URIRef(response['song'])
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170 songTime = response['t']
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171 # Possibilities to make this shut up about graph copies:
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172 # - implement the cheap readonly currentState response
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173 # - do multiple little currentState calls (in this code) over just
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174 # the required triples
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175 # - use addHandler instead and only fire dmx when there is a data
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176 # change (and also somehow call it when there is a time change)
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177
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178 outSubs = []
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179 with graph.currentState(tripleFilter=(song, L9['effect'], None)) as g:
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180 for effectUri in g.objects(song, L9['effect']):
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181 # these should be built once, not per (frequent) update
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182 node = EffectNode(graph, effectUri)
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183 outSubs.append(node.eval(songTime))
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184 out = Submaster.sub_maxes(*outSubs)
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185 # out.get_levels() for a more readable view
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186 dmx = out.get_dmx_list()
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187
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188 if log.isEnabledFor(logging.DEBUG):
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189 log.debug("send dmx: %r", out.get_levels())
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190 yield dmxclient.outputlevels(dmx, twisted=True)
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191 except Exception:
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192 traceback.print_exc()
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193 time.sleep(1)
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194
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195 loopTime = time.time() - t1
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196 log.debug('loopTime %.1f ms', 1000 * loopTime)
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197
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198 class App(object):
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199 def __init__(self, show):
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200 self.show = show
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201 self.graph = SyncedGraph("effectEval")
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202 self.graph.initiallySynced.addCallback(self.launch)
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203
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204 def launch(self, *args):
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205 task.LoopingCall(effectLoop, self.graph).start(.3)
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206 SFH = cyclone.web.StaticFileHandler
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207 self.cycloneApp = cyclone.web.Application(handlers=[
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208 (r'/()', SFH,
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209 {'path': 'light9/effecteval', 'default_filename': 'index.html'}),
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210 (r'/effect', EffectEdit),
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211 (r'/(websocket\.js)', SFH, {'path': 'light9/rdfdb/web/'}),
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212 (r'/effect\.js', StaticCoffee, {'src': 'light9/effecteval/effect.coffee'}),
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213 (r'/index\.js', StaticCoffee, {'src': 'light9/effecteval/index.coffee'}),
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214 (r'/effectUpdates', EffectUpdates),
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215 (r'/songEffectsUpdates', SongEffectsUpdates),
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216 (r'/static/(.*)', SFH, {'path': 'static/'}),
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217 (r'/effect/eval', EffectEval),
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218 (r'/songEffects', SongEffects),
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219 (r'/songEffects/eval', SongEffectsEval),
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220 ], debug=True, graph=self.graph)
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221 reactor.listenTCP(networking.effectEval.port, self.cycloneApp)
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222 log.info("listening on %s" % networking.effectEval.port)
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223
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224 class StaticCoffee(PrettyErrorHandler, cyclone.web.RequestHandler):
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225 def initialize(self, src):
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226 super(StaticCoffee, self).initialize()
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227 self.src = src
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228 def get(self):
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229 self.set_header('Content-Type', 'application/javascript')
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230 self.write(subprocess.check_output([
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231 '/usr/bin/coffee', '--compile', '--print', self.src]))
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232
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233
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234 if __name__ == "__main__":
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235 parser = optparse.OptionParser()
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236 parser.add_option('--show',
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237 help='show URI, like http://light9.bigasterisk.com/show/dance2008',
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238 default=showconfig.showUri())
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239 parser.add_option("-v", "--verbose", action="store_true",
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240 help="logging.DEBUG")
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241 parser.add_option("--twistedlog", action="store_true",
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242 help="twisted logging")
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243 (options, args) = parser.parse_args()
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244
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245 log.setLevel(logging.DEBUG if options.verbose else logging.INFO)
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246
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247 if not options.show:
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248 raise ValueError("missing --show http://...")
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249
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250 app = App(URIRef(options.show))
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251 if options.twistedlog:
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252 from twisted.python import log as twlog
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253 twlog.startLogging(sys.stderr)
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254 reactor.run()