cam_pos      = [0.387414, 1.49063, 0.418224]';
cam_dir      = [0.696675, 0.0985657, -0.710584]';
cam_up       = [-0.0129239, 0.99208, 0.124941]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.95397, 0.103554, -0.920933]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;