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Create generic bounding box function.

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Bert Peters
2019-12-17 07:28:39 +01:00
parent 1968e4c5b4
commit d0243fcf4d
3 changed files with 22 additions and 19 deletions
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16
2019/src/point.hpp
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@@ -46,6 +46,22 @@ namespace aoc2019 {
return result;
}
};
template<typename ValueType, std::size_t N, typename Ignored>
std::pair<Point<ValueType, N>, Point<ValueType, N>> bounding_box(const std::unordered_map<Point<ValueType, N>, Ignored> &data) {
Point<ValueType, N> lower, upper;
std::fill(lower.begin(), lower.end(), std::numeric_limits<ValueType>::max());
std::fill(upper.begin(), upper.end(), std::numeric_limits<ValueType>::min());
for (auto &entry : data) {
for (int i = 0; i < N; ++i) {
lower[i] = std::min(entry.first[i], lower[i]);
upper[i] = std::max(entry.first[i], upper[i]);
}
}
return {lower, upper};
}
}
namespace std {