2020-08-25 17:00:50 -07:00

46 lines
1.1 KiB
C++

#pragma once
#include <mapbox/geometry/wagyu/config.hpp>
#include <mapbox/geometry/wagyu/local_minimum.hpp>
#include <algorithm>
namespace mapbox {
namespace geometry {
namespace wagyu {
template <typename T>
using scanbeam_list = std::vector<T>;
template <typename T>
void insert_sorted_scanbeam(scanbeam_list<T>& scanbeam, T& t) {
typename scanbeam_list<T>::iterator i = std::lower_bound(scanbeam.begin(), scanbeam.end(), t);
if (i == scanbeam.end() || t < *i) {
scanbeam.insert(i, t);
}
}
template <typename T>
bool pop_from_scanbeam(T& Y, scanbeam_list<T>& scanbeam) {
if (scanbeam.empty()) {
return false;
}
Y = scanbeam.back();
scanbeam.pop_back();
return true;
}
template <typename T>
void setup_scanbeam(local_minimum_list<T>& minima_list, scanbeam_list<T>& scanbeam) {
scanbeam.reserve(minima_list.size());
for (auto lm = minima_list.begin(); lm != minima_list.end(); ++lm) {
scanbeam.push_back(lm->y);
}
std::sort(scanbeam.begin(), scanbeam.end());
}
} // namespace wagyu
} // namespace geometry
} // namespace mapbox