cam_pos      = [-0.916231, 1.55549, -1.05302]';
cam_dir      = [-0.378722, 0.236701, 0.89473]';
cam_up       = [-0.0612987, 0.958204, -0.27944]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [1.22823, 0.213699, 0.463349]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;