ceph/src/boost/libs/geometry/doc/src/examples/algorithms/assign_inverse.cpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2 // QuickBook Example
   3
   4 // Copyright (c) 2011-2012 Barend Gehrels, Amsterdam, the Netherlands.
   5
   6 // Use, modification and distribution is subject to the Boost Software License,
   7 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt)
   9
  10 //[assign_inverse
  11 //` Usage of assign_inverse and expand to conveniently determine bounding 3D box of two points
  12
  13 #include <iostream>
  14
  15 #include <boost/geometry.hpp>
  16 #include <boost/geometry/geometries/box.hpp>
  17 #include <boost/geometry/geometries/point.hpp>
  18
  19 using namespace boost::geometry;
  20
  21 int main()
  22 {
  23     typedef model::point<float, 3, cs::cartesian> point;
  24     typedef model::box<point> box;
  25
  26     box all;
  27     assign_inverse(all);
  28     std::cout << dsv(all) << std::endl;
  29     expand(all, point(0, 0, 0));
  30     expand(all, point(1, 2, 3));
  31     std::cout << dsv(all) << std::endl;
  32
  33     return 0;
  34 }
  35
  36 //]
  37
  38
  39 //[assign_inverse_output
  40 /*`
  41 Output:
  42 [pre
  43 ((3.40282e+038, 3.40282e+038, 3.40282e+038), (-3.40282e+038, -3.40282e+038, -3.40282e+038))
  44 ((0, 0, 0), (1, 2, 3))]
  45 */
  46 //]