cam_pos      = [-1.19696, 1.57005, -0.0195363]';
cam_dir      = [0.0940466, -0.408932, 0.907706]';
cam_up       = [0.12714, 0.909215, 0.396439]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [1.31326, -0.103902, -0.182875]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;