88 lines
3.2 KiB
Python
88 lines
3.2 KiB
Python
import queue
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import logging
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from pyaxidraw import axidraw
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from queue import Queue
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from threading import Event
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from sorteerhoed.Signal import Signal
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import time
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class Plotter:
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def __init__(self, config, eventQ: Queue, runningEvent: Event):
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self.config = config
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self.eventQ = eventQ
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self.q = Queue()
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self.isRunning = runningEvent
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self.logger = logging.getLogger("sorteerhoed").getChild("plotter")
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def park(self):
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self.logger.info("Queue to park plotter")
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if self.config['dummy_plotter']:
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# fastest way home :-)
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self.q.put([0,0,0])
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else:
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# TODO: find a nice way to park the axidraw in the 0 position
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self.q.put([0,0,0])
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def start(self):
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self.axiDrawCueListener()
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def axiDrawCueListener(self):
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if self.config['dummy_plotter']:
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while self.isRunning.is_set():
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plotterRan = False
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try:
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move = self.q.get(True, 1)
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plotterRan = True
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except queue.Empty as e:
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self.logger.log(5, "Empty queue.")
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if plotterRan:
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plotterRan = False
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self.eventQ.put(Signal('plotter.finished'))
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else:
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time.sleep(.05)
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self.logger.debug(f'Dummy plotter move: {move}')
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self.logger.info("Stopping dummy plotter")
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else:
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self.ad = axidraw.AxiDraw()
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self.ad.interactive()
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connected = self.ad.connect()
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if not connected:
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raise Exception("Cannot connect to Axidraw")
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try:
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self.ad.options.units = 1 # set to use centimeters instead of inches
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self.ad.options.accel = 100;
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self.ad.options.speed_penup = 100
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self.ad.options.speed_pendown = 100
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self.ad.options.model = 1 # A3, set to 1 for A4
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self.ad.moveto(0,0)
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plotterWidth = 22
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plotterHeight = 18 # 16?
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plotterRan = False
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while self.isRunning.is_set():
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# TODO: set timeout on .get() with catch block, so we can escape if no moves come in
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try:
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move = self.q.get(True, 1)
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plotterRan = True
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except queue.Empty as e:
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self.logger.log(5, "Empty queue.")
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if plotterRan:
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plotterRan = False
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self.eventQ.put(Signal('plotter.finished'))
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else:
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self.ad.moveto(move[0]* plotterWidth, move[1]*plotterHeight)
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self.logger.debug(f'handler! {move}')
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except Exception as e:
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self.logger.exception(e)
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finally:
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self.logger.warning("Close Axidraw connection")
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self.ad.moveto(0,0)
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self.ad.disconnect()
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# send shutdown signal (if not already set)
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self.isRunning.clear() |