/Src/Dependencies/Boost/libs/geometry/doc/src/examples/algorithms/append.cpp
http://hadesmem.googlecode.com/ · C++ · 61 lines · 21 code · 18 blank · 22 comment · 0 complexity · 56761cb691298b541b1efe835ec9e35a MD5 · raw file
- // Boost.Geometry (aka GGL, Generic Geometry Library)
- // QuickBook Example
- // Copyright (c) 2011 Barend Gehrels, Amsterdam, the Netherlands.
- // Use, modification and distribution is subject to the Boost Software License,
- // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- //[append
- //` Shows usage of Boost.Geometry's append to append a point or a range to a polygon
- #include <iostream>
- #include <boost/assign.hpp>
- #include <boost/geometry.hpp>
- #include <boost/geometry/geometries/polygon.hpp>
- #include <boost/geometry/geometries/adapted/boost_tuple.hpp>
- BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian)
- int main()
- {
- using boost::assign::tuple_list_of;
- using boost::make_tuple;
- using boost::geometry::append;
- typedef boost::geometry::model::polygon<boost::tuple<int, int> > polygon;
- polygon poly;
- // Append a range
- append(poly, tuple_list_of(0, 0)(0, 10)(11, 11)(10, 0)); /*< tuple_list_of delivers a range and can therefore be used in boost::geometry::append >*/
- // Append a point (in this case the closing point
- append(poly, make_tuple(0, 0));
- // Create an interior ring (append does not do this automatically)
- boost::geometry::interior_rings(poly).resize(1);
- // Append a range to the interior ring
- append(poly, tuple_list_of(2, 2)(2, 5)(6, 6)(5, 2), 0);
- // Append a point to the first interior ring
- append(poly, make_tuple(2, 2), 0);
- std::cout << boost::geometry::dsv(poly) << std::endl;
- return 0;
- }
- //]
- //[append_output
- /*`
- Output:
- [pre
- (((0, 0), (0, 10), (11, 11), (10, 0), (0, 0)), ((2, 2), (2, 5), (6, 6), (5, 2), (2, 2)))
- ]
- */
- //]