cam_pos      = [0.500832, 1.49727, 0.295048]';
cam_dir      = [-0.704415, 0.144982, -0.694823]';
cam_up       = [0.284693, 0.954434, -0.0894708]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.864755, 0.346912, 0.949079]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;