12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- // Boost.Geometry (aka GGL, Generic Geometry Library)
- // Robustness Test
- //
- // Copyright (c) 2009-2012 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)
- #ifndef BOOST_GEOMETRY_TEST_ROBUSTNESS_MAKE_SQUARE_POLYGON_HPP
- #define BOOST_GEOMETRY_TEST_ROBUSTNESS_MAKE_SQUARE_POLYGON_HPP
- #include <boost/geometry.hpp>
- template <typename Polygon, typename Generator, typename Settings>
- inline void make_square_polygon(Polygon& polygon, Generator& generator, Settings const& settings)
- {
- using namespace boost::geometry;
- typedef typename point_type<Polygon>::type point_type;
- typedef typename coordinate_type<Polygon>::type coordinate_type;
- coordinate_type x, y;
- x = generator();
- y = generator();
- typename ring_type<Polygon>::type& ring = exterior_ring(polygon);
- point_type p;
- set<0>(p, x); set<1>(p, y); append(ring, p);
- set<0>(p, x); set<1>(p, y + 1); append(ring, p);
- set<0>(p, x + 1); set<1>(p, y + 1); append(ring, p);
- set<0>(p, x + 1); set<1>(p, y); append(ring, p);
- set<0>(p, x); set<1>(p, y); append(ring, p);
- if (settings.triangular)
- {
- // Remove a point, generator says which
- int c = generator() % 4;
- if (c >= 1 && c <= 3)
- {
- ring.erase(ring.begin() + c);
- }
- }
- }
- #endif // BOOST_GEOMETRY_TEST_ROBUSTNESS_MAKE_SQUARE_POLYGON_HPP
|