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121 lines
4.6 KiB
C++
121 lines
4.6 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library) test file
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//
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// Copyright Barend Gehrels 2010, Geodan, Amsterdam, the Netherlands
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <geometry_test_common.hpp>
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#include<boost/geometry/geometry.hpp>
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#include<boost/geometry/geometries/adapted/boost_polygon/point.hpp>
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#include<boost/geometry/geometries/adapted/boost_polygon/box.hpp>
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#include<boost/geometry/geometries/adapted/boost_polygon/ring.hpp>
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#include<boost/geometry/geometries/adapted/boost_polygon/polygon.hpp>
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#include<boost/geometry/extensions/gis/io/wkt/wkt.hpp>
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#include<iostream>
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int test_main(int, char* [])
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{
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// 1a: Check if Boost.Polygon's point fulfills Boost.Geometry's point concept
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bg::concept::check<boost::polygon::point_data<double> >();
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// 1b: use a Boost.Polygon point in Boost.Geometry, calc. distance with two point types
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boost::polygon::point_data<double> p1(1, 2);
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typedef bg::model::point<double, 2, bg::cs::cartesian> bg_point;
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bg_point p2(3, 4);
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BOOST_CHECK_CLOSE(bg::distance(p1, p2), 2 * std::sqrt(2.0), 0.001);
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// 2a: Check if Boost.Polygon's box fulfills Boost.Geometry's box concept
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bg::concept::check<boost::polygon::rectangle_data<double> >();
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// 2b: use a Boost.Polygon rectangle in Boost.Geometry, compare with boxes
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boost::polygon::rectangle_data<double> b1;
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bg::model::box<bg_point> b2;
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bg::assign(b1, 0, 1, 5, 6);
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bg::assign(b2, 0, 1, 5, 6);
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double a1 = bg::area(b1);
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double a2 = bg::area(b2);
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BOOST_CHECK_CLOSE(a1, a2, 0.001);
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// 3a: Check if Boost.Polygon's polygon fulfills Boost.Geometry's ring concept
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bg::concept::check<boost::polygon::polygon_data<double> >();
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// 3b: use a Boost.Polygon polygon (ring) in Boost.Geometry
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// Filling it is a two-step process using Boost.Polygon
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std::vector<boost::polygon::point_data<double> > point_vector;
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point_vector.push_back(boost::polygon::point_data<double>(0, 0));
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point_vector.push_back(boost::polygon::point_data<double>(0, 3));
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point_vector.push_back(boost::polygon::point_data<double>(4, 0));
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point_vector.push_back(boost::polygon::point_data<double>(0, 0));
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boost::polygon::polygon_data<double> r1;
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r1.set(point_vector.begin(), point_vector.end());
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bg::model::ring<bg_point> r2;
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r2.push_back(bg_point(0, 0));
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r2.push_back(bg_point(0, 3));
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r2.push_back(bg_point(4, 0));
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r2.push_back(bg_point(0, 0));
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a1 = bg::area(r1);
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a2 = bg::area(r2);
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BOOST_CHECK_CLOSE(a1, a2, 0.001);
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// 4a: Boost.Polygon's polygon with holes
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point_vector.clear();
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point_vector.push_back(boost::polygon::point_data<double>(0, 0));
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point_vector.push_back(boost::polygon::point_data<double>(0, 10));
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point_vector.push_back(boost::polygon::point_data<double>(10, 10));
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point_vector.push_back(boost::polygon::point_data<double>(10, 0));
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point_vector.push_back(boost::polygon::point_data<double>(0, 0));
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boost::polygon::polygon_with_holes_data<double> poly1;
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poly1.set(point_vector.begin(), point_vector.end());
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// Fill the holes (we take two)
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std::vector<boost::polygon::polygon_data<double> > holes;
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holes.resize(2);
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point_vector.clear();
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point_vector.push_back(boost::polygon::point_data<double>(1, 1));
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point_vector.push_back(boost::polygon::point_data<double>(2, 1));
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point_vector.push_back(boost::polygon::point_data<double>(2, 2));
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point_vector.push_back(boost::polygon::point_data<double>(1, 2));
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point_vector.push_back(boost::polygon::point_data<double>(1, 1));
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holes[0].set(point_vector.begin(), point_vector.end());
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point_vector.clear();
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point_vector.push_back(boost::polygon::point_data<double>(3, 3));
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point_vector.push_back(boost::polygon::point_data<double>(4, 3));
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point_vector.push_back(boost::polygon::point_data<double>(4, 4));
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point_vector.push_back(boost::polygon::point_data<double>(3, 4));
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point_vector.push_back(boost::polygon::point_data<double>(3, 3));
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holes[1].set(point_vector.begin(), point_vector.end());
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poly1.set_holes(holes.begin(), holes.end());
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// Using Boost.Polygon
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a1 = bg::area(poly1);
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a2 = boost::polygon::area(poly1);
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BOOST_CHECK_CLOSE(a1, a2, 0.001);
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bg::model::polygon<bg_point> poly2;
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bg::read_wkt("POLYGON((0 0,0 10,10 10,10 0,0 0),(1 1,2 1,2 2,1 2,1 1),(3 3,4 3,4 4,3 4,3 3))", poly2);
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a2 = bg::area(poly2);
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BOOST_CHECK_CLOSE(a1, a2, 0.001);
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// Not finished:
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//bg::read_wkt("POLYGON((0 0,0 10,10 10,10 0,0 0),(1 1,2 1,2 2,1 2,1 1),(3 3,4 3,4 4,3 4,3 3))", poly1);
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return 0;
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}
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