You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
#include "benchmark/benchmark.h"
|
|
#include "clipper2/clipper.h"
|
|
#include "CommonUtils.h"
|
|
#include <iostream>
|
|
|
|
using namespace Clipper2Lib;
|
|
|
|
// globals
|
|
Paths64 test_paths;
|
|
|
|
// Previous (slow) StripDuplicates function - copies path
|
|
template <typename T>
|
|
inline Path<T> StripDuplicates1(const Path<T> &path, bool is_closed_path)
|
|
{
|
|
if (path.size() == 0) return Path<T>();
|
|
Path<T> result;
|
|
result.reserve(path.size());
|
|
typename Path<T>::const_iterator path_iter = path.cbegin();
|
|
Point<T> first_pt = *path_iter++, last_pt = first_pt;
|
|
result.push_back(first_pt);
|
|
for (; path_iter != path.cend(); ++path_iter) {
|
|
if (*path_iter != last_pt) {
|
|
last_pt = *path_iter;
|
|
result.push_back(last_pt);
|
|
}
|
|
}
|
|
if (!is_closed_path)
|
|
return result;
|
|
while (result.size() > 1 && result.back() == first_pt)
|
|
result.pop_back();
|
|
return result;
|
|
}
|
|
|
|
// Current StripDuplicates function - modifies the path in-place (ie avoids copying)
|
|
template<typename T>
|
|
inline void StripDuplicates2(Path<T>& path, bool is_closed_path)
|
|
{
|
|
path.erase(std::unique(path.begin(), path.end()), path.end());
|
|
if (is_closed_path)
|
|
while (path.size() > 1 && path.back() == path.front()) path.pop_back();
|
|
}
|
|
|
|
static void StripDuplicates_OLD(benchmark::State &state)
|
|
{
|
|
for (auto _ : state)
|
|
{
|
|
for (Path64& p: test_paths)
|
|
p = StripDuplicates1(p, true);
|
|
}
|
|
}
|
|
|
|
static void StripDuplicates_NEW(benchmark::State &state)
|
|
{
|
|
for (auto _ : state) {
|
|
for (Path64& p : test_paths)
|
|
StripDuplicates2(p, true);
|
|
}
|
|
}
|
|
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
const size_t max_paths = 5;
|
|
const int width = 6000, height = 4000, count = 10000;
|
|
test_paths.reserve(max_paths);
|
|
for (size_t i = 1; i <= max_paths; ++i)
|
|
test_paths.push_back(MakeRandomPoly(width, height, count));
|
|
|
|
benchmark::Initialize(0, nullptr);
|
|
BENCHMARK(StripDuplicates_OLD);
|
|
BENCHMARK(StripDuplicates_NEW);
|
|
benchmark::RunSpecifiedBenchmarks(benchmark::CreateDefaultDisplayReporter());
|
|
}
|