cam_pos      = [0.069417, 1.43359, 0.378792]';
cam_dir      = [-0.792135, -0.0118915, 0.61023]';
cam_up       = [0.0186148, 0.998874, 0.0436286]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [0.811382, -0.0610724, 1.05206]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;