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from vtkmodules.test import Testing as vtkTesting
class TestPolyDataMapperMTime(vtkTesting.vtkTest):
def test(self):
from vtkmodules import vtkInteractionStyle as _
from vtkmodules import vtkRenderingOpenGL2 as _
from vtkmodules.vtkFiltersSources import vtkSphereSource
from vtkmodules.vtkFiltersCore import vtkElevationFilter
from vtkmodules.vtkRenderingCore import (
vtkActor,
vtkColorTransferFunction,
vtkPolyDataMapper,
vtkRenderWindow,
vtkRenderer
)
from vtkmodules.vtkSerializationManager import vtkObjectManager
def serialize():
manager = vtkObjectManager()
manager.Initialize()
actor = vtkActor()
actor.mapper = (vtkSphereSource() >>
vtkElevationFilter() >> vtkPolyDataMapper()).last
ctf = vtkColorTransferFunction()
ctf.AddRGBPoint(0, 0.5, 0.5, 0.5)
ctf.AddRGBPoint(0.5, 0.1, 0.2, 0.3)
ctf.AddRGBPoint(1, 0.8, 0.8, 0.2)
actor.mapper.lookup_table = ctf
renderer = vtkRenderer()
renderer.AddActor(actor)
window = vtkRenderWindow()
window.AddRenderer(renderer)
window.Render()
manager.RegisterObject(window)
manager.UpdateStatesFromObjects()
active_ids = manager.GetAllDependencies(0)
states = map(manager.GetState, active_ids)
hash_to_blob_map = {blob_hash: manager.GetBlob(
blob_hash) for blob_hash in manager.GetBlobHashes(active_ids)}
test_ids = (manager.GetId(actor.mapper), manager.GetId(ctf), manager.GetId(actor.mapper.GetInputDataObject(0, 0)))
return states, hash_to_blob_map, test_ids
import json
manager = vtkObjectManager()
manager.Initialize()
states, hash_to_blob_map, test_ids = serialize()
for state in states:
manager.RegisterState(state)
for hash_text, blob in hash_to_blob_map.items():
manager.RegisterBlob(hash_text, blob)
manager.UpdateObjectsFromStates()
for i in test_ids:
print(manager.GetObjectAtId(i))
mtimes_before_update = [manager.GetObjectAtId(_id).GetMTime() for _id in test_ids]
# Change opacity
display_property_state = json.loads(manager.GetState(8))
display_property_state["Opacity"] = 0.4
manager.RegisterState(json.dumps(display_property_state))
manager.UpdateObjectsFromStates()
# Capture MTime of mapper, lut, input_polydata after update
mtimes_after_update = [manager.GetObjectAtId(_id).GetMTime() for _id in test_ids]
# Since only the display property state was modified, the MTimes of mapper,
# lut and input_polydata must remain the same.
self.assertEqual(mtimes_after_update, mtimes_before_update)
if __name__ == "__main__":
vtkTesting.main([(TestPolyDataMapperMTime, 'test')])
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