poly2tri/unittest/main.cpp

104 lines
3.1 KiB
C++
Raw Normal View History

#if !defined(_WIN32) && !defined(BOOST_TEST_DYN_LINK)
2018-05-28 19:55:02 +02:00
#define BOOST_TEST_DYN_LINK
#endif
2018-05-28 19:55:02 +02:00
#define BOOST_TEST_MODULE Poly2triTest
#include <poly2tri/poly2tri.h>
#include <boost/filesystem/path.hpp>
2018-05-28 19:55:02 +02:00
#include <boost/test/unit_test.hpp>
#include <fstream>
2018-05-28 19:55:02 +02:00
#include <iostream>
2019-06-11 12:05:12 +02:00
#include <iterator>
#include <stdexcept>
2018-05-28 19:55:02 +02:00
BOOST_AUTO_TEST_CASE(BasicTest)
{
std::vector<p2t::Point*> polyline{
new p2t::Point(0, 0),
new p2t::Point(1, 0),
new p2t::Point(1, 1),
};
p2t::CDT cdt{ polyline };
cdt.Triangulate();
const auto result = cdt.GetTriangles();
BOOST_REQUIRE_EQUAL(result.size(), 1);
BOOST_CHECK_EQUAL(*result[0]->GetPoint(0), *polyline[0]);
BOOST_CHECK_EQUAL(*result[0]->GetPoint(1), *polyline[1]);
BOOST_CHECK_EQUAL(*result[0]->GetPoint(2), *polyline[2]);
BOOST_CHECK(p2t::IsDelaunay(result));
for (const auto p : polyline) {
delete p;
}
}
BOOST_AUTO_TEST_CASE(QuadTest)
{
std::vector<p2t::Point*> polyline{ new p2t::Point(0, 0), new p2t::Point(0, 1),
new p2t::Point(1, 1), new p2t::Point(1, 0) };
p2t::CDT cdt{ polyline };
cdt.Triangulate();
const auto result = cdt.GetTriangles();
BOOST_REQUIRE_EQUAL(result.size(), 2);
BOOST_CHECK(p2t::IsDelaunay(result));
for (const auto p : polyline) {
delete p;
}
}
BOOST_AUTO_TEST_CASE(QuadTestThrow)
{
// Very narrow quad that demonstrates a failure case during triangulation
std::vector<p2t::Point*> polyline {
new p2t::Point(0.0, 0.0),
new p2t::Point(1.0e-05, 0.0),
new p2t::Point(1.1e-04, 3.0e-07),
new p2t::Point(1.0e-04, 3.0e-07)
};
p2t::CDT cdt{ polyline };
BOOST_CHECK_THROW(cdt.Triangulate(), std::runtime_error);
for (const auto p : polyline) {
delete p;
}
}
BOOST_AUTO_TEST_CASE(TestbedFilesTest)
{
for (const auto& filename : { "custom.dat", "diamond.dat", "star.dat", "test.dat" }) {
std::vector<p2t::Point*> polyline;
// Load pointset from file
// Parse and tokenize data file
std::string line;
#ifndef P2T_BASE_DIR
const auto basedir = boost::filesystem::path(__FILE__).remove_filename().parent_path();
#else
const auto basedir = boost::filesystem::path(P2T_BASE_DIR);
#endif
const auto datafile = basedir / boost::filesystem::path("testbed/data") / boost::filesystem::path(filename);
std::ifstream myfile(datafile.string());
BOOST_REQUIRE(myfile.is_open());
while (!myfile.eof()) {
getline(myfile, line);
if (line.empty()) {
break;
}
std::istringstream iss(line);
std::vector<std::string> tokens;
copy(std::istream_iterator<std::string>(iss), std::istream_iterator<std::string>(),
std::back_inserter<std::vector<std::string>>(tokens));
double x = std::stod(tokens[0]);
double y = std::stod(tokens[1]);
polyline.push_back(new p2t::Point(x, y));
}
p2t::CDT cdt{ polyline };
cdt.Triangulate();
const auto result = cdt.GetTriangles();
BOOST_REQUIRE(result.size() * 3 > polyline.size());
BOOST_CHECK_MESSAGE(p2t::IsDelaunay(result), filename + std::to_string(polyline.size()));
for (const auto p : polyline) {
delete p;
}
}
2018-05-28 19:55:02 +02:00
}