def _parse_rotate(s):
rotate = _float_list(s)
if len(rotate) == 4: # around axis
return Quaternion.new_rotate_axis(rotate[0] / 180. * math.pi,
Vector3(*vector[1:]))
else:
x, y, z = [ i / 180. * math.pi for i in rotate ]
return Quaternion.new_rotate_euler(y, z, x)
def tick(self, time):
self.current_time += time
fraction = self.current_time / self.total_time # part of animation done
if fraction > 1:
fraction = 1
current_rotation = Quaternion.new_interpolate(self.start_rotation,
self.dest_rotation,
fraction)
self.object.rotation = current_rotation
return fraction != 1 # continue animation iff it is not completed
def _compute_time(self):
if self.req_time:
return self.req_time
else:
angle = Quaternion.angle_between(self.start_rotation, self.dest_rotation)
return angle / self.req_speed
def tick(self, elapsed):
self.angle += self.angular_speed * elapsed
self.camera.eye += Quaternion.new_rotate_axis(self.angle, Vector3(0, 0, 1)) * self.speed * elapsed
self._update()
def _update(self):
direction = Quaternion.new_rotate_axis(self.angle, Vector3(0, 0, 1)) * Vector3(1, 0, 0)
self.camera.center = self.camera.eye + direction
