Fix streamlines for real now.

mayavi/components/source_widget.py

@@ -46,8 +46,6 @@ class SourceWidget(Component):
     # The poly data that the widget manages.
     poly_data = Instance(tvtk.PolyData, args=())
 
-    poly_data_updated = Event
-
     ########################################
     # Private traits.
 
@@ -195,7 +193,6 @@ def update_data(self):
     ######################################################################
     def update_poly_data(self):
         self.widget.get_poly_data(self.poly_data)
-        self.poly_data_updated = True
 
     ######################################################################
     # Non-public traits.

mayavi/modules/streamline.py

@@ -16,7 +16,7 @@
                              Delegate, Button
 from traitsui.api import View, Group, Item, InstanceEditor
 from tvtk.api import tvtk
-from tvtk.common import is_old_pipeline
+from tvtk.common import configure_outputs
 
 # Local imports
 from mayavi.core.module import Module
@@ -202,13 +202,13 @@ def _streamline_type_changed(self, value):
         rf = self.ribbon_filter
         tf = self.tube_filter
         if value == 'line':
-            self.outputs = [st.output]
+            configure_outputs(self, st)
         elif value == 'ribbon':
-            rf.input_connection = st.output_port
-            self.outputs = [rf.output]
+            self.configure_connection(rf, st)
+            configure_outputs(self, rf)
         elif value == 'tube':
-            tf.input_connection = st.output_port
-            self.outputs = [tf.output]
+            self.configure_connection(tf, st)
+            configure_outputs(self, tf)
         self.render()
 
     def _update_streamlines_fired(self):
@@ -256,7 +256,3 @@ def _actor_changed(self, old, new):
         new.scene = self.scene
         new.inputs = [self]
         self._change_components(old, new)
-
-    def _poly_data_updated_changed_for_seed(self):
-        if not is_old_pipeline():
-            self.stream_tracer.update()

tvtk/common.py

@@ -48,10 +48,12 @@ def is_old_pipeline():
 
 def configure_connection(obj, inp):
     """ Configure topology for vtk pipeline obj."""
-    if inp.has_output_port():
+    if hasattr(inp, 'output_port'):
+        obj.input_connection = inp.output_port
+    elif inp.has_output_port():
         obj.input_connection = inp.get_output_object()
     else:
-        configure_input_data(obj, inp.outputs[0])
+        configure_input(obj, inp.outputs[0])
 
 def configure_input_data(obj, data):
     """ Configure the input data for vtk pipeline object obj."""