Push the saved target into a freshly created orbit/ortho control, then
reinitialize() + update() so orientation and distance are re-derived
from the live camera (the constructor starts at target (0,0,0)). A no-op
for fly controls, which initialize themselves from the camera.
Push the saved target into a freshly created orbit/ortho control, then
reinitialize()+update()so orientation and distance are re-derived from the live camera (the constructor starts at target (0,0,0)). A no-op for fly controls, which initialize themselves from the camera.