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import unittest
from tvtk.api import tvtk
from tvtk.pipeline.browser import (SimpleTreeGenerator, FullTreeGenerator,
PipelineBrowser)
class TestSimpleTreeGenerator(unittest.TestCase):
def setUp(self):
self.cs = cs = tvtk.ConeSource()
self.ef = ef = tvtk.ElevationFilter(input_connection=cs.output_port)
self.m = m = tvtk.PolyDataMapper(input_connection=ef.output_port)
self.a = tvtk.Actor(mapper=m)
self.ren = tvtk.Renderer()
self.ren.add_actor(self.a)
self.renwin = tvtk.RenderWindow()
self.renwin.add_renderer(self.ren)
def _make_tree_generator(self):
return SimpleTreeGenerator()
def test_has_children_is_correct(self):
# Given/When
tg = self._make_tree_generator()
# Then
self.assertEqual(tg.has_children(self.cs), True)
self.assertEqual(tg.has_children(self.a), True)
self.assertEqual(tg.has_children(self.m), True)
self.assertEqual(tg.has_children(self.ef), True)
self.assertEqual(tg.has_children(self.a.property), False)
self.assertEqual(tg.has_children(self.ren), True)
self.assertEqual(tg.has_children(self.renwin), True)
def test_get_children(self):
# Given
tg = self._make_tree_generator()
# When/Then
kids = tg.get_children(self.cs)
self.assertEqual(len(kids), 0)
kids = tg.get_children(self.ef)
self.assertEqual(len(kids), 1)
self.assertEqual(list(kids.values()), [[self.cs]])
kids = tg.get_children(self.m)
self.assertEqual(len(kids), 2)
self.assertEqual(kids['input'], [self.ef])
self.assertEqual(kids['lookup_table'], self.m.lookup_table)
kids = tg.get_children(self.a)
self.assertEqual(len(kids), 3)
self.assertEqual(kids['mapper'], self.m)
self.assertEqual(kids['property'], self.a.property)
self.assertEqual(kids['texture'], None)
kids = tg.get_children(self.ren)
self.assertEqual(len(kids), 2)
self.assertEqual(kids['view_props'][0], self.a)
self.assertEqual(len(kids['view_props']), 1)
self.assertTrue(kids['active_camera'].is_a('vtkCamera'))
kids = tg.get_children(self.renwin)
self.assertEqual(len(kids), 1)
self.assertEqual(kids['renderers'][0], self.ren)
class TestFullTreeGenrator(TestSimpleTreeGenerator):
def _make_tree_generator(self):
return FullTreeGenerator()
def test_has_children_is_correct(self):
# Given/When
tg = self._make_tree_generator()
# Then
self.assertEqual(tg.has_children(self.cs), True)
self.assertEqual(tg.has_children(self.a), True)
self.assertEqual(tg.has_children(self.m), True)
self.assertEqual(tg.has_children(self.ef), True)
self.assertEqual(tg.has_children(self.a.property), True)
self.assertEqual(tg.has_children(self.ren), True)
self.assertEqual(tg.has_children(self.renwin), True)
def test_get_children(self):
# Given
tg = self._make_tree_generator()
# When/Then
kids = tg.get_children(self.cs)
self.assertEqual(len(kids), 0)
kids = tg.get_children(self.ef)
self.assertEqual(len(kids), 1)
self.assertEqual(list(kids.values()), [[self.cs]])
kids = tg.get_children(self.m)
self.assertEqual(len(kids), 3)
self.assertEqual(kids['input'], [self.ef])
self.assertEqual(kids['lookup_table'], self.m.lookup_table)
kids = tg.get_children(self.a)
self.assertEqual(len(kids), 7)
self.assertEqual(kids['mapper'], self.m)
self.assertEqual(kids['property'], self.a.property)
self.assertEqual(kids['texture'], None)
self.assertEqual(kids['user_transform'], None)
self.assertEqual(kids['user_matrix'], None)
kids = tg.get_children(self.ren)
self.assertTrue(len(kids) in [6, 7, 8])
self.assertEqual(kids['view_props'][0], self.a)
self.assertEqual(len(kids['view_props']), 1)
self.assertTrue(kids['active_camera'].is_a('vtkCamera'))
kids = tg.get_children(self.renwin)
self.assertTrue(len(kids) > 0 and len(kids) < 3)
self.assertEqual(kids['renderers'][0], self.ren)
def test_glyph_pipeline(self):
# Given
rta = tvtk.RTAnalyticSource()
cs = tvtk.ConeSource()
g = tvtk.Glyph3D(input_connection=rta.output_port)
g.set_source_connection(cs.output_port)
m = tvtk.PolyDataMapper(input_connection=g.output_port)
tg = self._make_tree_generator()
# When/Then
kids = tg.get_children(cs)
self.assertEqual(len(kids), 0)
kids = tg.get_children(rta)
self.assertEqual(len(kids), 0)
kids = tg.get_children(g)
self.assertEqual(len(kids), 2)
self.assertEqual(kids['input'], [rta, cs])
kids = tg.get_children(m)
self.assertEqual(len(kids), 3)
self.assertEqual(kids['input'], [g])
self.assertEqual(kids['lookup_table'], m.lookup_table)
class TestPipelineBrowser(unittest.TestCase):
def test_simple_usage(self):
# Given
cs = tvtk.ConeSource()
ef = tvtk.ElevationFilter(input_connection=cs.output_port)
# When
p = PipelineBrowser(root_object=[ef])
# Then
self.assertEqual(len(p._root.children), 1)
kids = list(p._root.children)
self.assertEqual(kids[0].name, 'ElevationFilter')
gk = list(kids[0].children)
self.assertEqual(len(gk), 1)
self.assertEqual(gk[0].name, 'ConeSource')
ggk = list(gk[0].children)
self.assertEqual(len(ggk), 0)
# Check if the default traits_view returns correctly.
p.default_traits_view()
# When
# Check if editing a selected object fires a ui change.
self.count = 0
def callback():
self.count += 1
p.on_trait_change(callback, 'object_edited')
p._on_select(gk[0])
cs.height = 2.0
# Then
self.assertTrue(self.count > 0)
if __name__ == '__main__':
unittest.main()
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