Source code for paraview.cinemaIO.explorers
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import cinema_store
import itertools
import json
[docs]class Explorer(object):
"""
Middleman that connects an arbitrary producing codes to the CinemaStore.
The purpose of this class is to run through the parameter sets, and tell a
set of tracks (in order) to do something with the parameter values
it cares about.
"""
def __init__(self,
cinema_store,
parameters, #these are the things that this explorer is responsible for and their ranges
tracks #the things we pass off values to in order to do the work
):
self.__cinema_store = cinema_store
self.parameters = parameters
self.tracks = tracks
@property
def cinema_store(self):
return self.__cinema_store
[docs] def list_parameters(self):
"""
parameters is an ordered list of parameters that the Explorer varies over
"""
return self.parameters
[docs] def prepare(self):
""" Give tracks a chance to get ready for a run """
if self.tracks:
for e in self.tracks:
res = e.prepare(self)
[docs] def execute(self, desc):
# Create the document/data product for this sample.
doc = cinema_store.Document(desc)
for e in self.tracks:
#print ("EXECUTING track ", e, doc.descriptor)
e.execute(doc)
self.insert(doc)
[docs] def explore(self, fixedargs=None):
"""
Explore the problem space to populate the store being careful not to hit combinations
where dependencies are not satisfied.
Fixed arguments are the parameters that we want to hold constant in the exploration.
"""
self.prepare()
for descriptor in self.cinema_store.iterate(self.list_parameters(), fixedargs):
self.execute(descriptor)
self.finish()
[docs] def finish(self):
""" Give tracks a chance to clean up after a run """
if self.tracks:
for e in self.tracks:
res = e.finish()
[docs] def insert(self, doc):
self.cinema_store.insert(doc)
[docs]class Track(object):
"""
abstract interface for things that can produce data
to use this:
caller should set up some visualization
then tie a particular set of parameters to an action with a track
"""
def __init__(self):
pass
[docs] def prepare(self, explorer):
""" subclasses get ready to run here """
pass
[docs] def finish(self):
""" subclasses cleanup after running here """
pass
[docs] def execute(self, document):
""" subclasses operate on parameters here"""
pass
[docs]class LayerControl(object):
"""
Prototype for something that Layer track can control
"""
def __init__(self, name, showFunc, hideFunc):
self.name = name
self.callShow = showFunc #todo, determine if function now and convert instead of try/except below
self.callHide = hideFunc
[docs]class Layer(Track):
"""
A track that connects a layer to the set of objects in the scene that it controls.
"""
def __init__(self, layer, objectlist):
super(Layer, self).__init__()
self.parameter = layer
# objlist is an array of class instances, they must have a name and
#show and hide method, use LayerControl to make them.
self.objectlist = objectlist
[docs] def execute(self, doc):
o = None
if self.parameter in doc.descriptor:
o = doc.descriptor[self.parameter]
for obj in self.objectlist:
if obj.name == o:
try:
obj.callShow() #method
except TypeError:
obj.callShow(obj) #function
else:
try:
obj.callHide()
except TypeError:
obj.callHide(obj)