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"""Define OpenCV window display context
This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
"""
__author__ = "Théo de la Hogue"
__credits__ = []
__copyright__ = "Copyright 2023, Ecole Nationale de l'Aviation Civile (ENAC)"
__license__ = "GPLv3"
import sys
import logging
import time
from argaze import ArFeatures, DataFeatures, GazeFeatures
from argaze.utils import UtilsFeatures
import numpy
import cv2
class Window(ArFeatures.ArContext):
@DataFeatures.PipelineStepInit
def __init__(self, **kwargs):
# Init parent classes
super().__init__()
@DataFeatures.PipelineStepEnter
def __enter__(self):
logging.info('OpenCV context starts...')
# Create a window to display context
cv2.namedWindow(self.name, cv2.WINDOW_AUTOSIZE)
# Init timestamp
self.__start_time = time.time()
# Attach mouse event callback to window
cv2.setMouseCallback(self.name, self.__on_mouse_event)
return self
def __on_mouse_event(self, event, x, y, flags, param):
"""Process pointer position."""
logging.debug('Window.on_mouse_event %i %i', x, y)
# Process timestamped gaze position
self._process_gaze_position(
timestamp = int((time.time() - self.__start_time) * 1e3),
x = x,
y = y)
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