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/**********************************************************************
*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (C) 2011 Sandro Santilli <strk@kbt.io>
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************/
//
// Test Suite for geos::algorithm::MinimumBoundingCircle
#include <tut/tut.hpp>
// geos
#include <geos/algorithm/MinimumBoundingCircle.h>
#include <geos/geom/Coordinate.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/GeometryFactory.h>
#include <geos/geom/PrecisionModel.h>
#include <geos/io/WKTReader.h>
// std
#include <string>
#include <memory>
namespace tut {
//
// Test Group
//
using geos::geom::Coordinate;
using geos::geom::CoordinateXY;
using geos::geom::Geometry;
using geos::geom::GeometryFactory;
using geos::geom::PrecisionModel;
using geos::algorithm::MinimumBoundingCircle;
// dummy data, not used
struct test_minimumboundingcircle_data {
geos::io::WKTReader reader;
std::unique_ptr<Geometry> geom;
std::unique_ptr<Geometry> geomOut;
GeometryFactory::Ptr geomFact = GeometryFactory::create();
test_minimumboundingcircle_data()
{}
void
doMinimumBoundingCircleTest(std::string wktIn, std::string wktOut,
geos::geom::Coordinate& centreOut, double radiusOut)
{
geom = reader.read(wktIn);
MinimumBoundingCircle mbc(geom.get());
std::vector<CoordinateXY> exPts = mbc.getExtremalPoints();
const auto& actual = geomFact->createMultiPoint(std::move(exPts));
double actualRadius = mbc.getRadius();
geos::geom::CoordinateXY actualCentre = mbc.getCentre();
geomOut = reader.read(wktOut);
bool isEqual = actual->equals(geomOut.get());
// need this hack because apparently equals does not work for MULTIPOINT EMPTY
if(geomOut->isEmpty() && geom->isEmpty()) {
isEqual = true;
}
if(!isEqual) {
std::cout << "Centre = " << actualCentre << " Radius = " << actualRadius << " isEqual = " << isEqual << std::endl;
std::cout << "Actual:" << std::endl << actual->toString() << std::endl;
std::cout << "Expected:" << std::endl << geomOut->toString() << std::endl;
}
ensure(isEqual);
if(!centreOut.isNull()) {
if (centreOut.distance(actualCentre) > 0.001) {
std::cout << "centreOut " << centreOut << std::endl;
std::cout << "actualCentre " << actualCentre << std::endl;
}
ensure_equals("centerOut", centreOut.distance(actualCentre), 0.0, 0.001);
}
if(radiusOut >= 0) {
ensure_equals("radius", actualRadius, radiusOut, 0.0001);
}
}
void
doMinimumBoundingCircleTest(std::string wktIn, std::string wktOut)
{
geos::geom::Coordinate c;
c.setNull();
doMinimumBoundingCircleTest(wktIn, wktOut, c, -1.0);
}
};
typedef test_group<test_minimumboundingcircle_data> group;
typedef group::object object;
group test_minimumboundingcircle_group("geos::algorithm::MinimumBoundingCircle");
//
// Test Cases
//
template<>
template<>
void object::test<1>
()
{
Coordinate c(10, 10);
doMinimumBoundingCircleTest(
"POINT (10 10)",
"POINT (10 10)",
c,
0);
}
template<>
template<>
void object::test<2>
()
{
Coordinate c(15, 15);
doMinimumBoundingCircleTest(
"MULTIPOINT ((10 10), (20 20))",
"MULTIPOINT ((10 10), (20 20))",
c,
7.0710678118654755);
}
template<>
template<>
void object::test<3>
()
{
Coordinate c(20, 20);
doMinimumBoundingCircleTest(
"MULTIPOINT ((10 10), (20 20), (30 30))",
"MULTIPOINT ((10 10), (30 30))",
c,
14.142135623730951);
}
template<>
template<>
void object::test<4>
()
{
Coordinate c(15, 15);
doMinimumBoundingCircleTest(
"MULTIPOINT ((10 10), (20 20), (10 20))",
"MULTIPOINT ((10 10), (20 20), (10 20))",
c,
7.0710678118654755);
}
template<>
template<>
void object::test<5>
()
{
Coordinate c(150, 100);
doMinimumBoundingCircleTest(
"POLYGON ((100 100, 200 100, 150 90, 100 100))",
"MULTIPOINT ((100 100), (200 100))",
c,
50);
}
template<>
template<>
void object::test<6>
()
{
Coordinate c(15, 15);
doMinimumBoundingCircleTest(
"MULTIPOINT ((10 10), (20 20), (10 20), (15 19))",
"MULTIPOINT ((10 10), (20 20), (10 20))",
c,
7.0710678118654755);
}
template<>
template<>
void object::test<7>
()
{
Coordinate c(26284.84180271327, 65267.114509082545);
doMinimumBoundingCircleTest(
"POLYGON ((26426 65078, 26531 65242, 26096 65427, 26075 65136, 26426 65078))",
"MULTIPOINT ((26531 65242), (26075 65136), (26096 65427))",
c,
247.4360455914027);
}
template<>
template<>
void object::test<8>
()
{
Coordinate c(196.026, 159.103);
doMinimumBoundingCircleTest(
"POLYGON ((100 200, 300 150, 110 100, 100 200))",
"MULTIPOINT ((110 100), (300 150), (100 200))",
c,
104.372);
}
template<>
template<>
void object::test<9>
()
{
Coordinate c(196.026, 140.897);
doMinimumBoundingCircleTest(
"POLYGON ((110 200, 300 150, 100 100, 110 200))",
"MULTIPOINT ((100 100), (300 150), (110 200))",
c,
104.37204);
}
template<>
template<>
void object::test<10>
()
{
Coordinate c(3, 2);
doMinimumBoundingCircleTest(
"POLYGON ((0 0, 6 0, 5 5, 0 0))",
"MULTIPOINT ((0 0), (6 0), (5 5))",
c,
3.60555);
}
} // namespace tut
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