v8::Handle<v8::Value> create_js_box(const osmium::Box& box) {
v8::HandleScope scope;
if (!box.valid()) {
return scope.Close(v8::Undefined());
}
auto cf = module->Get(symbol_Coordinates);
assert(cf->IsFunction());
auto bf = module->Get(symbol_Box);
assert(bf->IsFunction());
v8::Local<v8::Value> argv_bl[2] = { v8::Number::New(box.bottom_left().lon()), v8::Number::New(box.bottom_left().lat()) };
auto bottom_left = v8::Local<v8::Function>::Cast(cf)->NewInstance(2, argv_bl);
v8::Local<v8::Value> argv_tr[2] = { v8::Number::New(box.top_right().lon()), v8::Number::New(box.top_right().lat()) };
auto top_right = v8::Local<v8::Function>::Cast(cf)->NewInstance(2, argv_tr);
v8::Local<v8::Value> argv_box[2] = { bottom_left, top_right };
return scope.Close(v8::Local<v8::Function>::Cast(bf)->NewInstance(2, argv_box));
}
void update(const osmium::Box& box) {
update(box.bottom_left());
update(box.top_right());
}
/**
* Check whether one geometry overlaps another.
*/
inline bool overlaps(const osmium::Box& lhs, const osmium::Box& rhs) noexcept {
return ((lhs.bottom_left().x() <= rhs.top_right().x()) &&
(lhs.bottom_left().y() <= rhs.top_right().y()) &&
(rhs.bottom_left().x() <= lhs.top_right().x()) &&
(rhs.bottom_left().y() <= lhs.top_right().y()));
}