1// Copyright 2005 Google Inc. All Rights Reserved.
2
3#include "s2pointregion.h"
4#include "base/logging.h"
5#include "util/coding/coder.h"
6#include "s2cap.h"
7#include "s2cell.h"
8#include "s2latlngrect.h"
9
10static const unsigned char kCurrentEncodingVersionNumber = 1;
11
12S2PointRegion::~S2PointRegion() {
13}
14
15S2PointRegion* S2PointRegion::Clone() const {
16 return new S2PointRegion(point_);
17}
18
19S2Cap S2PointRegion::GetCapBound() const {
20 return S2Cap::FromAxisHeight(point_, 0);
21}
22
23S2LatLngRect S2PointRegion::GetRectBound() const {
24 S2LatLng ll(point_);
25 return S2LatLngRect(ll, ll);
26}
27
28bool S2PointRegion::MayIntersect(S2Cell const& cell) const {
29 return cell.Contains(point_);
30}
31
32void S2PointRegion::Encode(Encoder* encoder) const {
33 encoder->Ensure(30); // sufficient
34
35 encoder->put8(kCurrentEncodingVersionNumber);
36 for (int i = 0; i < 3; ++i) {
37 encoder->putdouble(point_[i]);
38 }
39 DCHECK_GE(encoder->avail(), 0);
40}
41
42bool S2PointRegion::Decode(Decoder* decoder) {
43 unsigned char version = decoder->get8();
44 if (version > kCurrentEncodingVersionNumber) return false;
45
46 for (int i = 0; i < 3; ++i) {
47 point_[i] = decoder->getdouble();
48 }
49 DCHECK(S2::IsUnitLength(point_));
50
51 return decoder->avail() >= 0;
52}
53