0588de76bb
Reviewers: buda Reviewed By: buda Subscribers: pullbot Differential Revision: https://phabricator.memgraph.io/D526
35 lines
805 B
C++
35 lines
805 B
C++
#pragma once
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#include <cmath>
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#include <limits>
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#include "point.hpp"
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namespace kd {
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namespace math {
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using byte = unsigned char;
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// returns the squared distance between two points
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template <class T>
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T distance_sq(const Point<T>& a, const Point<T>& b) {
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auto dx = a.longitude - b.longitude;
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auto dy = a.latitude - b.latitude;
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return dx * dx + dy * dy;
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}
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// returns the distance between two points
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template <class T>
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T distance(const Point<T>& a, const Point<T>& b) {
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return std::sqrt(distance_sq(a, b));
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}
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// returns the distance between two points looking at a specific axis
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// \param axis 0 if abscissa else 1 if ordinate
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template <class T>
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T axial_distance(const Point<T>& a, const Point<T>& b, byte axis) {
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return axis == 0 ? a.longitude - b.longitude : a.latitude - b.latitude;
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}
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}
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}
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