def play(self, do_loop=False, real_time=True):
time = 0.0 # seconds
timer = QElapsedTimer()
timer.restart()
dtime = 1.0 / self.frames_per_second
key_frame_number = 0
frame_number = 0
for kf in self._key_frames:
self.current_key_frame_index = key_frame_number
key_frame_time = 0.0
while key_frame_time < kf.time_to_next_frame:
# Drop frames if we are going too slow
# if real_time and (timer.elapsed() - 200) > time*1000.0:
# continue
tf = key_frame_time / kf.time_to_next_frame
interpolation_parameter = tf + key_frame_number
camera_state = camera.State()
focus_x = self.spline.interpolate_sequence(
self._focusx,
interpolation_parameter,
do_loop)
focus_y = self.spline.interpolate_sequence(
self._focusy,
interpolation_parameter,
do_loop)
focus_z = self.spline.interpolate_sequence(
self._focusz,
interpolation_parameter,
do_loop)
camera_state.focus= Vec3([focus_x, focus_y, focus_z])
camera_state.zFocus_vheight = self.spline.interpolate_sequence(
self._zfv,
interpolation_parameter,
do_loop)
quat = self.spline.interpolate_quaternion_sequence(
self._quat,
interpolation_parameter,
do_loop)
camera_state.rotation = quat.to_rotation()
if real_time:
while timer.elapsed() < time*1000.0:
# TODO - use threading instead
QCoreApplication.processEvents()
frame = KeyFrame(camera_state)
frame.frame_number = frame_number + 1
frame.key_frame_number = key_frame_number + 1
yield frame
key_frame_time += dtime
time += dtime
frame_number += 1
if (not do_loop) and (key_frame_number == len(self._key_frames) - 1):
return # Don't go past final frame
key_frame_number += 1
