/usr/include/osmium/geometry/shplib.hpp is in libosmium-dev 0.0~20140910-9a069af-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | #ifndef OSMIUM_GEOMETRY_SHPLIB_HPP
#define OSMIUM_GEOMETRY_SHPLIB_HPP
/*
Copyright 2012 Jochen Topf <jochen@topf.org> and others (see README).
This file is part of Osmium (https://github.com/joto/osmium).
Osmium is free software: you can redistribute it and/or modify it under the
terms of the GNU Lesser General Public License or (at your option) the GNU
General Public License as published by the Free Software Foundation, either
version 3 of the Licenses, or (at your option) any later version.
Osmium is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU Lesser General Public License and the GNU
General Public License for more details.
You should have received a copy of the Licenses along with Osmium. If not, see
<http://www.gnu.org/licenses/>.
*/
#define OSMIUM_COMPILE_WITH_CFLAGS_SHP `geos-config --cflags`
#define OSMIUM_LINK_WITH_LIBS_SHP -lshp `geos-config --libs`
#include <vector>
#include <shapefil.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/GeometryCollection.h>
#include <geos/geom/Polygon.h>
#include <geos/geom/LineString.h>
#include <osmium/geometry/point.hpp>
#include <osmium/geometry/linestring.hpp>
#include <osmium/geometry/polygon.hpp>
#include <osmium/geometry/multipolygon.hpp>
namespace Osmium {
namespace Geometry {
/**
* Create Shapelib geometry of a Point.
*
* Caller takes ownership. You have to call
* SHPDestroyObject() with this geometry when you are done.
*/
inline SHPObject* create_shp_object(const Osmium::Geometry::Point& point) {
double x = point.lon();
double y = point.lat();
return SHPCreateSimpleObject(SHPT_POINT, 1, &x, &y, NULL);
}
namespace {
/**
* Create a SHPObject for a Geometry created from a way and return it.
*
* Caller takes ownership. You have to call
* SHPDestroyObject() with this geometry when you are done.
*/
inline SHPObject* create_line_or_polygon(const Osmium::Geometry::FromWay& from_way, int shp_type) {
if (!from_way.nodes().has_position()) {
throw std::runtime_error("node coordinates not available for building way geometry");
}
int size = from_way.nodes().size();
if (size == 0 || size == 1) {
std::cerr << "error building way geometry for way " << from_way.id() << ": must at least contain two nodes" << std::endl;
throw Osmium::Geometry::IllegalGeometry();
}
std::vector<double> lon_checked;
lon_checked.reserve(size);
lon_checked.push_back(from_way[0].position().lon());
std::vector<double> lat_checked;
lat_checked.reserve(size);
lat_checked.push_back(from_way[0].position().lat());
for (int i=1; i < size; i++) {
if (from_way[i] == from_way[i-1]) {
std::cerr << "warning building way geometry for way " << from_way.id() << ": contains node " << from_way[i].ref() << " twice" << std::endl;
} else if (from_way[i].position() == from_way[i-1].position()) {
std::cerr << "warning building way geometry for way " << from_way.id() << ": contains position " << from_way[i].position() << " twice" << std::endl;
} else {
lon_checked.push_back(from_way[i].position().lon());
lat_checked.push_back(from_way[i].position().lat());
}
}
if (lon_checked.size() == 1) {
std::cerr << "error building way geometry for way " << from_way.id() << ": must at least contain two different points" << std::endl;
throw Osmium::Geometry::IllegalGeometry();
}
if (from_way.reverse()) {
std::reverse(lon_checked.begin(), lon_checked.end());
std::reverse(lat_checked.begin(), lat_checked.end());
}
return SHPCreateSimpleObject(shp_type, lon_checked.size(), &(lon_checked[0]), &(lat_checked[0]), NULL);
}
}
/**
* Create Shapelib geometry of a LineString.
*
* Caller takes ownership. You have to call
* SHPDestroyObject() with this geometry when you are done.
*/
inline SHPObject* create_shp_object(const Osmium::Geometry::LineString& linestring) {
return create_line_or_polygon(linestring, SHPT_ARC);
}
/**
* Create Shapelib geometry of a Polygon.
*
* Caller takes ownership. You have to call
* SHPDestroyObject() with this geometry when you are done.
*/
inline SHPObject* create_shp_object(const Osmium::Geometry::Polygon& polygon) {
return create_line_or_polygon(polygon, SHPT_POLYGON);
}
namespace {
inline void dump_geometry(const geos::geom::Geometry* g, std::vector<int>& part_start_list, std::vector<double>& x_list, std::vector<double>& y_list) {
switch (g->getGeometryTypeId()) {
case geos::geom::GEOS_MULTIPOLYGON:
case geos::geom::GEOS_MULTILINESTRING: {
for (geos::geom::GeometryCollection::const_iterator it = dynamic_cast<const geos::geom::GeometryCollection*>(g)->begin();
it != dynamic_cast<const geos::geom::GeometryCollection*>(g)->end(); ++it) {
dump_geometry(*it, part_start_list, x_list, y_list);
}
break;
}
case geos::geom::GEOS_POLYGON: {
const geos::geom::Polygon* polygon = dynamic_cast<const geos::geom::Polygon*>(g);
dump_geometry(polygon->getExteriorRing(), part_start_list, x_list, y_list);
for (size_t i=0; i < polygon->getNumInteriorRing(); ++i) {
dump_geometry(polygon->getInteriorRingN(i), part_start_list, x_list, y_list);
}
break;
}
case geos::geom::GEOS_LINESTRING:
case geos::geom::GEOS_LINEARRING: {
part_start_list.push_back(x_list.size());
const geos::geom::CoordinateSequence* cs = dynamic_cast<const geos::geom::LineString*>(g)->getCoordinatesRO();
for (size_t i = 0; i < cs->getSize(); ++i) {
x_list.push_back(cs->getX(i));
y_list.push_back(cs->getY(i));
}
break;
}
default:
throw std::runtime_error("invalid geometry type encountered");
}
}
}
/**
* Create Shapelib geometry of a MultiPolygon.
*
* Caller takes ownership. You have to call
* SHPDestroyObject() with this geometry when you are done.
*/
inline SHPObject* create_shp_object(const Osmium::Geometry::MultiPolygon& multipolygon) {
const geos::geom::MultiPolygon* geos_multipolygon = multipolygon.borrow_geos_geometry();
std::vector<double> x_list;
std::vector<double> y_list;
std::vector<int> part_start_list;
dump_geometry(geos_multipolygon, part_start_list, x_list, y_list);
return SHPCreateObject(
SHPT_POLYGON, // nSHPType
-1, // iShape
part_start_list.size(), // nParts
&part_start_list[0], // panPartStart
NULL, // panPartType
x_list.size(), // nVertices,
&x_list[0], // padfX
&y_list[0], // padfY
NULL, // padfZ
NULL); // padfM
}
/**
* Create Shapelib geometry of a Geometry.
*
* Caller takes ownership. You have to call
* SHPDestroyObject() with this geometry when you are done.
*/
inline SHPObject* create_shp_object(const Osmium::Geometry::Geometry& geometry) {
/* this is rather ugly code but we have to do this here because we can't make this
free function into a member function where C++ would to the polymorphy thing for us. */
const Osmium::Geometry::Point* point = dynamic_cast<const Osmium::Geometry::Point*>(&geometry);
if (point) {
return create_shp_object(*point);
}
const Osmium::Geometry::LineString* linestring = dynamic_cast<const Osmium::Geometry::LineString*>(&geometry);
if (linestring) {
return create_shp_object(*linestring);
}
const Osmium::Geometry::Polygon* polygon = dynamic_cast<const Osmium::Geometry::Polygon*>(&geometry);
if (polygon) {
return create_shp_object(*polygon);
}
const Osmium::Geometry::MultiPolygon* multipolygon = dynamic_cast<const Osmium::Geometry::MultiPolygon*>(&geometry);
if (multipolygon) {
return create_shp_object(*multipolygon);
}
return NULL;
}
} // namespace Geometry
} // namespace Osmium
#endif // OSMIUM_GEOMETRY_SHPLIB_HPP
|