light9 Files · Nodes/gamma.py

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dmcc

changes from tonight's rehearsal:
changes from tonight's rehearsal:
- CueFader is closer to actually running the show, computes DMX levels
to send.
- KeyboardComposer is not a dummy. Use DMXDUMMY=1 to disable it.
- Submaster: subs can now be "temporary" -- i.e. they shouldn't be saved
or loaded. to save a temporary sub, make a copy of it with a proper name
since the computed name will be ugly.
Also, get_normalized_copy() and crossfade() methods added.
linear_fade helper (shouldn't be in Submaster, probably) added too.
- dmxchanedit: longer labels
- cuelist1 now has some bogus data in it and some crap removed
- dmxclient: now listens to the $DMXHOST and $DMXDUMMY env variables.
- patchdata: now up to date with this year's show
- danshow subs song{01..19}: removed. maybe we'll re-add them in an
archive directory.

"""node that performs a simple gamma (exp) function on its input"""

class GammaOps(Ops):
    def started(self, input, output, stateaccess):
        self.startmeup(stateaccess)
    def changed(self, input, output, stateaccess):
        port.output = port.input ** stateaccess.gamma + stateaccess.offset
        stateaccess.lastvalue = State.FloatingPoint(port.input)

        output = gamma(input)
    # no timed function
    def startmeup(self, stateaccess):
        # whatever
        pass

class Gamma(Node):
    def __init__(self):
        Node.__init__(self)
        self.node_params = {'gamma':State.FloatingPoint,'offset':State.FloatingPoint}
        self.ops = GammaOps()

    def getnodeparams(self):
        return self.node_params
        
    def getports(self):
        return (Port('a', optional=1),
                Port('b'))

    def __str__(self):
        return "3"

world.register_node(Gamma)