--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Nodes/gamma.py	Wed Jul 03 09:37:57 2002 +0000
@@ -0,0 +1,32 @@
+"""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)