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# This is a CamiTK python action
#
# Test the interaction between python and the CamiTK application using a parameter and a timer.
# This is a simple test where a counter is incremented in the tick() method called by a timer()
# that lives in Python.
#
# It demonstrates how state can be preserved between two timer ticks calls using the action
# parameters.
# Click 'Start'/'Stop' to start/stop the timer.
# Note that the timer interval is slowed down/accelerated automatically within the tick() method.
import camitk
from PySide2.QtCore import QTimer
import sys
def tick(self:camitk.Action):
counter = self.getParameterValue("Counter")
print(f"test_parameter_interaction_timer tick {counter} (this is stderr)", file=sys.stderr) # first print is on stderr
counter += 1
self.setParameterValue("Counter", counter)
self.timer.setInterval(int(1000.0 / float(counter%10 + 1)))
self.updateWidget()
print(f"test_parameter_interaction_timer tick {counter} (this is stdout)") # second print on stdout
def init(self:camitk.Action):
print("test_parameter_interaction_timer init", file=sys.stderr)
self.timer = None
self.setApplyButtonText("Start")
def process(self:camitk.Action):
self.counter = self.getParameterValue("Counter")
print(f"test_parameter_interaction_timer process {self.counter}", file=sys.stderr)
if not self.timer:
self.timer = QTimer()
connected = self.timer.timeout.connect(lambda: tick(self))
if not self.timer.isActive():
self.setApplyButtonText("Stop")
self.timer.start(1000)
else:
self.setApplyButtonText("Restart")
self.timer.stop()
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