cam_pos      = [0.86524, 1.76897, 1.1486]';
cam_dir      = [-0.446558, 0.113739, -0.887496]';
cam_up       = [-0.351844, 0.88966, 0.291052]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-1.09416, -0.588169, 0.475164]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;