message: fixed Mat4.rotate argument type
diff: @@ -446,7 +446,7 @@ namespace Mat4 {
  return out
  }
  - export function rotate(out: Mat4, a: Mat4, rad: number, axis: Mat4) {
  + export function rotate(out: Mat4, a: Mat4, rad: number, axis: Vec3) {
  let x = axis[0], y = axis[1], z = axis[2],
  len = Math.sqrt(x * x + y * y + z * z),
  s, c, t,
  