Function equal_cycles

test/test_planar_faces.cpp:7–25

#include "planar.h"

bool equal_cycles(const std::vector<size_t> & a, const std::vector<size_t> & b) {
    size_t n = a.size();
    if (n != b.size()) {
        return false;
    }
    for (size_t begin = 0; begin < n; begin++) {
        bool ok = true;
        for (size_t i = 0; i < n; i++) {
            if (a[(begin + i) % n] != b[i]) {
                ok = false;
                break;
            }
        }
        if (ok) {
            return true;
        }
    }
    return false;
}

void test_simple() {
    std::vector<Point> p = {