cam_pos      = [-0.51849, 0.936955, 0.757139]';
cam_dir      = [-0.525659, 0.427868, -0.735263]';
cam_up       = [0.849594, 0.308012, -0.428157]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.0575556, 1.13015, 0.698814]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;