def __exit__(self, t, val, trace):
    cc = mlab.gcf().scene.camera
cc.position = self.orig_pos
cc.focal_point = self.orig_fp
cc.view_angle = self.orig_view_angle
cc.view_up = self.orig_view_up
cc.clipping_range = self.orig_clipping_range
if not self.orig_no_render:
    mlab.gcf().scene.disable_render = False
if t != None:
    print(t, val, trace)
ipdb.post_mortem(trace)
locking camera in mayavi