cam_pos      = [0.784528, 1.70382, 1.74057]';
cam_dir      = [0.288408, -0.0726751, -0.954746]';
cam_up       = [-0.251779, 0.95627, -0.148848]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-1.22867, -0.376808, -0.342472]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;