]>
Commit | Line | Data |
---|---|---|
11fdf7f2 TL |
1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | // This file is manually converted from PROJ4 | |
3 | ||
4 | // Copyright (c) 2008-2012 Barend Gehrels, Amsterdam, the Netherlands. | |
5 | ||
92f5a8d4 TL |
6 | // This file was modified by Oracle on 2017, 2019. |
7 | // Modifications copyright (c) 2017-2019, Oracle and/or its affiliates. | |
11fdf7f2 TL |
8 | // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle |
9 | ||
10 | // Use, modification and distribution is subject to the Boost Software License, | |
11 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
12 | // http://www.boost.org/LICENSE_1_0.txt) | |
13 | ||
14 | // This file is converted from PROJ4, http://trac.osgeo.org/proj | |
15 | // PROJ4 is originally written by Gerald Evenden (then of the USGS) | |
16 | // PROJ4 is maintained by Frank Warmerdam | |
17 | // PROJ4 is converted to Geometry Library by Barend Gehrels (Geodan, Amsterdam) | |
18 | ||
19 | // Original copyright notice: | |
20 | ||
21 | // Permission is hereby granted, free of charge, to any person obtaining a | |
22 | // copy of this software and associated documentation files (the "Software"), | |
23 | // to deal in the Software without restriction, including without limitation | |
24 | // the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
25 | // and/or sell copies of the Software, and to permit persons to whom the | |
26 | // Software is furnished to do so, subject to the following conditions: | |
27 | ||
28 | // The above copyright notice and this permission notice shall be included | |
29 | // in all copies or substantial portions of the Software. | |
30 | ||
31 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
32 | // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
33 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
34 | // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
35 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
36 | // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
37 | // DEALINGS IN THE SOFTWARE. | |
38 | ||
39 | #ifndef BOOST_GEOMETRY_PROJECTIONS_PJ_INV_HPP | |
40 | #define BOOST_GEOMETRY_PROJECTIONS_PJ_INV_HPP | |
41 | ||
42 | ||
43 | ||
44 | #include <boost/geometry/srs/projections/impl/adjlon.hpp> | |
45 | #include <boost/geometry/core/radian_access.hpp> | |
46 | #include <boost/geometry/util/math.hpp> | |
47 | ||
48 | /* general inverse projection */ | |
49 | ||
50 | namespace boost { namespace geometry { namespace projections | |
51 | { | |
52 | ||
53 | namespace detail | |
54 | { | |
55 | ||
56 | /* inverse projection entry */ | |
57 | template <typename PRJ, typename LL, typename XY, typename PAR> | |
58 | inline void pj_inv(PRJ const& prj, PAR const& par, XY const& xy, LL& ll) | |
59 | { | |
60 | typedef typename PAR::type calc_t; | |
61 | static const calc_t EPS = 1.0e-12; | |
62 | ||
63 | /* can't do as much preliminary checking as with forward */ | |
64 | /* descale and de-offset */ | |
f51cf556 TL |
65 | calc_t lon = 0; |
66 | calc_t lat = 0; | |
67 | calc_t xy_x = 0; | |
68 | calc_t xy_y = 0; | |
69 | ||
70 | if (par.axis[0] == 1) | |
71 | { | |
72 | xy_x = (geometry::get<1>(xy) * par.to_meter * par.sign[1] - par.x0) * par.ra; | |
73 | xy_y = (geometry::get<0>(xy) * par.to_meter * par.sign[0] - par.y0) * par.ra; | |
74 | } else { | |
75 | xy_x = (geometry::get<0>(xy) * par.to_meter * par.sign[0] - par.x0) * par.ra; | |
76 | xy_y = (geometry::get<1>(xy) * par.to_meter * par.sign[1] - par.y0) * par.ra; | |
77 | } | |
92f5a8d4 TL |
78 | |
79 | prj.inv(par, xy_x, xy_y, lon, lat); /* inverse project */ | |
f51cf556 | 80 | |
11fdf7f2 TL |
81 | lon += par.lam0; /* reduce from del lp.lam */ |
82 | if (!par.over) | |
83 | lon = adjlon(lon); /* adjust longitude to CM */ | |
84 | if (par.geoc && geometry::math::abs(geometry::math::abs(lat)-geometry::math::half_pi<calc_t>()) > EPS) | |
85 | lat = atan(par.one_es * tan(lat)); | |
86 | ||
87 | geometry::set_from_radian<0>(ll, lon); | |
88 | geometry::set_from_radian<1>(ll, lat); | |
89 | } | |
90 | ||
91 | } // namespace detail | |
92 | }}} // namespace boost::geometry::projections | |
93 | ||
94 | #endif |