def get_core_singleton(remote=False) -> CMMCorePlus:
"""Retrieve the MMCore singleton for this session.
The first call to this function determines whether we're running remote or not.
perhaps a temporary function for now...
"""
global _SESSION_CORE
if _SESSION_CORE is None:
if remote:
from pymmcore_plus import RemoteMMCore
_SESSION_CORE = RemoteMMCore() # type: ignore # it has the same interface.
else:
_SESSION_CORE = CMMCorePlus.instance()
return _SESSION_CORE
from pymmcore_plus import CMMCorePlus
# see https://github.com/tlambert03/useq-schema
sequence = MDASequence(
channels=["DAPI", {
"config": "FITC",
"exposure": 50
}],
time_plan={
"interval": 2,
"loops": 5
},
z_plan={
"range": 4,
"step": 0.5
},
axis_order="tpcz",
)
mmc = CMMCorePlus.instance()
mmc.loadSystemConfiguration()
@mmc.mda.events.frameReady.connect
def new_frame(img, event):
print(img.shape)
mda_thread = mmc.run_mda(sequence)
Whether to force a change away from tracking the default camera.
"""
if not force:
raise RuntimeError(
"Setting the camera on a DefaultCameraExposureWidget "
"may cause it to malfunction. Either use *force=True* "
" or create an ExposureWidget"
)
return super().setCamera(camera)
def _camera_updated(self, value: str):
# This will not always fire
# see https://github.com/micro-manager/mmCoreAndDevices/issues/181
self._camera = value
# this will result in a double call of _on_load if this callback
# was triggered by a configuration load. But I don't see an easy way around that
# fortunately _on_load should be low cost
self._on_load()
if __name__ == "__main__": # pragma: no cover
import sys
from pymmcore_plus import CMMCorePlus # noqa
CMMCorePlus.instance().loadSystemConfiguration()
app = QtW.QApplication(sys.argv)
win = DefaultCameraExposureWidget()
win.show()
sys.exit(app.exec_())
from pymmcore_plus import CMMCorePlus
core = CMMCorePlus.instance()
core.loadSystemConfiguration()
# Note that when state devices change either the state or the label
# TWO propertyChanged events will be emitted, one for prop 'State'
# and one for prop 'Label'.
# Probably, best to check the property name and only respond to one of them
@core.events.propertyChanged.connect
def _on_prop_changed(dev, prop, value):
if dev == "Objective" and prop == "Label":
print("new objective is", value)
core.setState("Objective", 3)
def test_single_instance():
core1 = CMMCorePlus.instance()
core2 = CMMCorePlus.instance()
assert core1 is core2