1 files changed, 52 insertions, 0 deletions
diff --git a/src/third_party/s2/s2pointregion.cc b/src/third_party/s2/s2pointregion.cc
new file mode 100644
index 00000000000..0ad23665a3a
--- /dev/null
+++ b/src/third_party/s2/s2pointregion.cc
@@ -0,0 +1,52 @@
+// Copyright 2005 Google Inc. All Rights Reserved.
+
+#include "s2pointregion.h"
+#include "base/logging.h"
+#include "util/coding/coder.h"
+#include "s2cap.h"
+#include "s2cell.h"
+#include "s2latlngrect.h"
+
+static const unsigned char kCurrentEncodingVersionNumber = 1;
+
+S2PointRegion::~S2PointRegion() {
+}
+
+S2PointRegion* S2PointRegion::Clone() const {
+  return new S2PointRegion(point_);
+}
+
+S2Cap S2PointRegion::GetCapBound() const {
+  return S2Cap::FromAxisHeight(point_, 0);
+}
+
+S2LatLngRect S2PointRegion::GetRectBound() const {
+  S2LatLng ll(point_);
+  return S2LatLngRect(ll, ll);
+}
+
+bool S2PointRegion::MayIntersect(S2Cell const& cell) const {
+  return cell.Contains(point_);
+}
+
+void S2PointRegion::Encode(Encoder* encoder) const {
+  encoder->Ensure(30);  // sufficient
+
+  encoder->put8(kCurrentEncodingVersionNumber);
+  for (int i = 0; i < 3; ++i) {
+    encoder->putdouble(point_[i]);
+  }
+  DCHECK_GE(encoder->avail(), 0);
+}
+
+bool S2PointRegion::Decode(Decoder* decoder) {
+  unsigned char version = decoder->get8();
+  if (version > kCurrentEncodingVersionNumber) return false; 
+  
+  for (int i = 0; i < 3; ++i) {
+    point_[i] = decoder->getdouble();
+  }
+  DCHECK(S2::IsUnitLength(point_));
+
+  return decoder->avail() >= 0;
+}