Searched refs:n1_n2 (Results 1 – 1 of 1) sorted by relevance
588 double n1_n2 = (vx * vx + vy * vy) * (vx_prev * vx_prev + vy_prev * vy_prev); in cvTrackFace() local589 if (n1_n2 != 0) in cvTrackFace()590 pFaceTracker->dbRotateDelta = asin((vx * vy_prev - vx_prev * vy) / sqrt(n1_n2)); in cvTrackFace()