cam_pos      = [0.305121, 1.10563, 0.356525]';
cam_dir      = [0.531825, 0.494459, -0.687512]';
cam_up       = [-0.460287, 0.85023, 0.25543]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.945421, -0.24021, -0.904089]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;