Method pad

source/core/StarRect.hpp:570–575

template <typename T, size_t N>
void Box<T, N>::pad(T amount) {
  for (size_t i = 0; i < N; ++i) {
    m_min[i] -= amount;
    m_max[i] += amount;
  }
}

template <typename T, size_t N>
Box<T, N> Box<T, N>::padded(T amount) const {