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
|
#include "geometry.hpp"
#include "point.hpp"
#include "multi_point.hpp"
#include "line_string.hpp"
#include "multi_line_string.hpp"
#include "polygon.hpp"
#include "multi_polygon.hpp"
#include "geometry_collection.hpp"
#include <string>
namespace mbgl {
namespace android {
namespace geojson {
/**
* Turn mapbox::geometry type into Java GeoJson Geometries
*/
class GeometryEvaluator {
public:
jni::JNIEnv& env;
jni::Object<Geometry> operator()(const mbgl::Point<double> &geometry) const {
return jni::Cast(env, Point::New(env, geometry), Geometry::javaClass);
}
jni::Object<Geometry> operator()(const mbgl::LineString<double> &geometry) const {
return jni::Cast(env, LineString::New(env, geometry), Geometry::javaClass);
}
jni::Object<Geometry> operator()(const mbgl::MultiLineString<double> &geometry) const {
return jni::Cast(env, MultiLineString::New(env, geometry), Geometry::javaClass);
}
jni::Object<Geometry> operator()(const mbgl::MultiPoint<double> &geometry) const {
return jni::Cast(env, MultiPoint::New(env, geometry), Geometry::javaClass);
}
jni::Object<Geometry> operator()(const mbgl::Polygon<double> &geometry) const {
return jni::Cast(env, Polygon::New(env, geometry), Geometry::javaClass);
}
jni::Object<Geometry> operator()(const mbgl::MultiPolygon<double> &geometry) const {
return jni::Cast(env, MultiPolygon::New(env, geometry), Geometry::javaClass);
}
jni::Object<Geometry> operator()(const mapbox::geometry::geometry_collection<double> &geometry) const {
return jni::Cast(env, GeometryCollection::New(env, geometry), Geometry::javaClass);
}
};
jni::Object<Geometry> Geometry::New(jni::JNIEnv& env, mbgl::Geometry<double> geometry) {
GeometryEvaluator evaluator { env } ;
return mbgl::Geometry<double>::visit(geometry, evaluator);
}
mbgl::Geometry<double> Geometry::convert(jni::JNIEnv &env, jni::Object<Geometry> jGeometry) {
auto type = Geometry::getType(env, jGeometry);
if (type == Point::Type()) {
return { Point::convert(env, jni::Object<Point>(jGeometry.Get())) };
} else if (type == MultiPoint::Type()) {
return { MultiPoint::convert(env, jni::Object<MultiPoint>(jGeometry.Get())) };
} else if (type == LineString::Type()) {
return { LineString::convert(env, jni::Object<LineString>(jGeometry.Get())) };
} else if (type == MultiLineString::Type()) {
return { MultiLineString::convert(env, jni::Object<MultiLineString>(jGeometry.Get())) };
} else if (type == Polygon::Type()) {
return { Polygon::convert(env, jni::Object<Polygon>(jGeometry.Get())) };
} else if (type == MultiPolygon::Type()) {
return { MultiPolygon::convert(env, jni::Object<MultiPolygon>(jGeometry.Get())) };
} else if (type == GeometryCollection::Type()) {
return { GeometryCollection::convert(env, jni::Object<GeometryCollection>(jGeometry.Get())) };
}
throw std::runtime_error(std::string {"Unsupported GeoJSON type: " } + type);
}
std::string Geometry::getType(jni::JNIEnv &env, jni::Object<Geometry> jGeometry) {
static auto method = Geometry::javaClass.GetMethod<jni::String ()>(env, "type");
auto jType = jGeometry.Call(env, method);
auto type = jni::Make<std::string>(env, jType);
jni::DeleteLocalRef(env, jType);
return type;
}
void Geometry::registerNative(jni::JNIEnv &env) {
// Lookup the class
javaClass = *jni::Class<Geometry>::Find(env).NewGlobalRef(env).release();
}
jni::Class<Geometry> Geometry::javaClass;
} // namespace geojson
} // namespace android
} // namespace mbgl
|
