cam_pos      = [-0.847017, 1.49938, -1.25988]';
cam_dir      = [-0.378722, 0.236701, 0.89473]';
cam_up       = [-0.0566749, 0.958997, -0.277692]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [1.22862, 0.207316, 0.465205]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;