cam_pos      = [-0.467746, 0.962039, 1.65312]';
cam_dir      = [0.880245, 0.464294, -0.0979795]';
cam_up       = [-0.415248, 0.853623, 0.314479]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.305432, 0.314056, -1.25578]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;