[vtkusers] renderer.GetActors() returning 3d actors, but not 2d actors.
greg.schussman at gmail.com
Fri Sep 12 20:04:25 EDT 2014
I'm using python-2.6 and vtk-5.10.1.
I have a renderer, to which I'm adding actors. Some are 3d actors
(surfaces, sets of cones), and some are 2d actors (filename text,
scalarbar). To add them, I'm calling:
self.renderer.AddActor(my_actor) # Also tried AddViewProp(my_actor)
They seem to add in ok, and they do get rendered.
However, based on user input, sometimes actors need to be removed and new
ones added. So I need to take a look at what's already there, which I do
c = self.renderer.GetActors()
num_items = c.GetNumberOfItems()
result = 
for i in xrange(num_items):
I notice that when I add a 3d actor and I check before/adter, the num_items
increments as expected.
However, when I add 2d actors (ScalarBar, Text), although they also render,
when I check before/after, the num_items does not increment, and they are
not returned in the GetActors() list.
How do I find out which 2d actors are in the renderer, so that I can
optionally remove some of them?
Should I be doing something different?
p.s. I've tried calling renderer.GetActors2D(), but then when i try to
call GetNextActor() on that, I get "AttributeError: GetNextActor".
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