Rotate a globe in QGIS by updating the crs

animate_crs.py

from PyQt5.QtCore import QTimer
from qgis.core import QgsCoordinateReferenceSystem
from qgis.utils import iface

current_index = 0

def update_crs():
    global current_index
    custom_proj = f"+proj=ortho +lat_0=0 +lon_0={current_index} +x_0=0 +y_0=0 +ellps=sphere +units=m +no_defs +type=crs"
    custom_crs = QgsCoordinateReferenceSystem()
    custom_crs.createFromProj(custom_proj)
    iface.mapCanvas().setDestinationCrs(custom_crs)
    iface.mapCanvas().refresh()
    current_index = (current_index + 10) % 360

timer = QTimer()
timer.timeout.connect(update_crs)
timer.start(500)