From 8d11c6c8213f46f0fa19826917c255edd5d43cb1 Mon Sep 17 00:00:00 2001 From: mzuenni Date: Sun, 28 Jul 2024 22:54:40 +0200 Subject: Test (#4) * update * moved content in subdir * rename file * add test setup * add test setup * add github action * automaticly test all cpp files * timeout after 10s * setulimit and dont zero memory * test build pdf * install latexmk * update * update * ngerman * fonts * removed old code * add first test * added tests * test in sorted order * more tests * simplified test * more tests * fix suffix tree * fixes and improvements * done ust lst directly * fix swap * add links to pdf * fix constants * add primorial * add comment * various improvements * more tests * added missing stuf * more tests * fix tests * more tests * more tests * more tests * fix recursion? * test trie * more tests * only use python temporarily for listings * only use python temporarily for listings * more tests * fix longestCommonSubstring * more tests * more tests * made code more similiar * fix? * more tests * more tests * more tests * add ahoCorasick test + limit 4GB stack size * more tests * fix test * add additional test * more tests * more tests * fix? * better fix * fix virtual tree * more tests * more tests * recursive closest pair * more tests * decrease limit * new tests * more tests * fix name * more tests * add test * new test * more tests * more tests * more tests * more tests * new test and content * new code * new code * larger tests * fix and test * new test * new test * update pdf * remove comments * new test * more tests * more testcases * more tests * increased limit * more tests * more tests * more tests * new tests * more tests * shortened code * new test * add basic tests for bigint * more tests * removed old files * new test * ignore some files * more auto more ccw * fix test * more tests * fix * new tests * more tests * more tests * stronger test * actually verify delaunay... * more tests * fix header * more tests * run tests parallel? * test parralel? * add --missing * separate workflows * test * is the pdf checked? * separate workflows * fix workflow * more workflows --------- Co-authored-by: Yidi --- test/geometry/convexHull.cpp | 79 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 test/geometry/convexHull.cpp (limited to 'test/geometry/convexHull.cpp') diff --git a/test/geometry/convexHull.cpp b/test/geometry/convexHull.cpp new file mode 100644 index 0000000..788a634 --- /dev/null +++ b/test/geometry/convexHull.cpp @@ -0,0 +1,79 @@ +#include "../util.h" +constexpr ll EPS = 0; +#define double ll +#define polar polar +#include +#undef polar +#undef double +#include + +//strict convex hull +ll isConvexHull(const vector& ps, const vector& hull) { + ll n = sz(hull) - 1; + if (n == 0) { + for (pt p : ps) if (p != hull[0]) return 1; + return 0; + } else { + if (hull[0] != hull[n]) return 2; + //hull has no duplicates + for (ll i = 0; i < n; i++) { + for (ll j = 0; j < i; j++) { + if (hull[i] == hull[j]) return 3; + } + } + //hull is subset + for (pt p : hull) { + bool isP = false; + for (pt c : ps) isP |= c == p; + if (!isP) return 4; + } + //hull contains all points + for (pt p : hull) { + ll mi = 1; + for (ll i = 0; i < n; i++) { + mi = min(mi, cross(hull[i], hull[i + 1], p)); + } + if (mi < 0) return 5; //outside + if (mi > 0) continue; + bool isCorner = 4; + for (pt c : hull) isCorner |= c == p; + if (!isCorner) return 6; + } + // hull is convex + if (n <= 2) return 0; + for (ll i = 0; i < n; i++) { + if (cross(hull[i], hull[i + 1], hull[(i + 2) % n]) <= 0) return 7; + } + return 0; + } +} + +void stress_test(ll range) { + ll queries = 0; + for (int tries = 0; tries < 100'000; tries++) { + int n = Random::integer(1, 100); + auto ps = Random::points(n, -range, range); + auto got = convexHull(ps); + if (isConvexHull(ps, got) > 0) cerr << "error" << FAIL; + queries += n; + } + cerr << "tested random queries: " << queries << endl; +} + +constexpr int N = 2'000'000; +void performance_test() { + timer t; + auto ps = Random::points(N, -1'000'000'000, 1'000'000'000); + t.start(); + auto a = convexHull(ps); + t.stop(); + hash_t hash = sz(a); + if (t.time > 500) cerr << "too slow: " << t.time << FAIL; + cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +int main() { + stress_test(100); + stress_test(1'000'000'000); + performance_test(); +} -- cgit v1.2.3