# HG changeset patch
# User drewp@bigasterisk.com
# Date 2015-06-14 05:00:24
# Node ID add6514966f89c7cd2386b5bf0286c72379deced
# Parent  9da76bb54c803ee3e4dc71d2f911f21ad3acd4be

looking for eval optimizations
Ignore-this: ed3028d79f293fafc63facb01c4e26e

diff --git a/light9/Submaster.py b/light9/Submaster.py
--- a/light9/Submaster.py
+++ b/light9/Submaster.py
@@ -46,7 +46,7 @@ class Submaster(object):
         return self.levels
 
     def no_nonzero(self):
-        return (not self.levels.values()) or not (max(self.levels.values()) > 0)
+        return all(v == 0 for v in self.levels.itervalues())
 
     def __mul__(self, scalar):
         return Submaster("%s*%s" % (self.name, scalar),
diff --git a/light9/effecteval/effect.py b/light9/effecteval/effect.py
--- a/light9/effecteval/effect.py
+++ b/light9/effecteval/effect.py
@@ -164,6 +164,10 @@ class EffectNode(object):
             currentSubLevel=self.currentSubLevel,
             ))
 
+        # I think this is slowing effecteval. Could we cache results
+        # that we know haven't changed, like if a curve returns 0
+        # again, we can skip an eval() call on the line that uses it
+        
         for c in self.codes:
             codeNs = ns.copy()
             codeNs.update(c.pyResources)