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import moderngl_window
import random
from moderngl_window.utils.scheduler import Scheduler
class CubeSimpleInstancedScheduler(moderngl_window.WindowConfig):
"""Schedule one-off and recurring events"""
title = "Scheduling example"
aspect_ratio = None
def __init__(self, **kwargs):
super().__init__(**kwargs)
# create a instance of the Scheduler and tell it to use the windows internal timer
# if we dont pass a timer `time.time()` will be used.
# by using the internal Timer class the pause and time setting functions
# will effect our events aswell.
self.scheduler = Scheduler(self.timer)
# change the color every 1/2 seconds
color_changing_event = self.scheduler.run_every(self.change_color, 1 / 2)
# cancel the color changing event after 2 seconds using a priority of 2
self.scheduler.cancel(color_changing_event, delay=2)
# restart it after another 2 seconds (4 seconds total)
color_changing_event = self.scheduler.run_every(
self.change_color, 1 / 2, initial_delay=4
)
# after 5 seconds change the window title
self.scheduler.run_once(self.change_title, 5, arguments=("Changed title",))
def change_title(self, new_title):
self.wnd.title = new_title
def change_color(self):
self.clear_color = (random.random(), random.random(), random.random(), 0)
def render(self, time: float, frametime: float):
self.scheduler.execute()
if __name__ == "__main__":
moderngl_window.run_window_config(CubeSimpleInstancedScheduler)
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