diff --git a/bin/curvecalc b/bin/curvecalc
--- a/bin/curvecalc
+++ b/bin/curvecalc
@@ -99,8 +99,8 @@ class Main(object):
         curveView = self.curvesetView.row(subName).curveView
         t = self.lastSeenInputTime # curveView.current_time() # new curve hasn't heard the time yet. this has gotten too messy- everyone just needs to be able to reach the time source
         print "time", t
-        curveView.add_point((t - .5, 0))
-        curveView.add_point((t, 1))
+        curveView.add_points([(t - .5, 0),
+                              (t, 1)])
             
 
     def onNewCurve(self, *args):
diff --git a/light9/curvecalc/curveview.py b/light9/curvecalc/curveview.py
--- a/light9/curvecalc/curveview.py
+++ b/light9/curvecalc/curveview.py
@@ -837,10 +837,13 @@ class Curveview(object):
         y = self.curve.eval(x)
         self.add_point((x, y))
 
+    def add_points(self, pts):
+        idxs = [self.curve.insert_pt(p) for p in pts]
+        self.update_curve()
+        self.select_indices(idxs)
+        
     def add_point(self, p):
-        i = self.curve.insert_pt(p)
-        self.update_curve()
-        self.select_indices([i])
+        self.add_points([p])
 
     def add_marker(self, p):
         self.markers.insert_pt(p)