dir.y = 0;
cam_theta = rad_to_deg(acos(dot(dir, Vec3(0, 0, 1))));
dir.y = 0;
cam_theta = rad_to_deg(acos(dot(dir, Vec3(0, 0, 1))));
set_light(1, lpos[1], Vec3(0.6, 0.7, 1.0) * 0.6);
set_light(2, lpos[2], Vec3(0.8, 1.0, 0.8) * 0.3);
set_light(1, lpos[1], Vec3(0.6, 0.7, 1.0) * 0.6);
set_light(2, lpos[2], Vec3(0.8, 1.0, 0.8) * 0.3);