def getCameraToTargetTransform(self, targetFrame):

        targetToWorld = transformUtils.copyFrame(targetFrame)
        cameraToWorld = self.getCameraTransform()

        cameraToTarget = transformUtils.concatenateTransforms([cameraToWorld, targetToWorld.GetLinearInverse()])
        focalDistance = np.linalg.norm(np.array(self.camera.GetPosition()) - np.array(self.camera.GetFocalPoint()))
        return cameraToTarget, focalDistance
dataset/ETHPy150Open RobotLocomotion/director/src/python/director/cameracontrol.py/CameraTracker.getCameraToTargetTransform/swapped operands of `-`