[coding] Added a serialization method for traffic coords.

1 files changed, 27 insertions, 0 deletions

diff --git a/coding/traffic.cpp b/coding/traffic.cpp
new file mode 100644
index 0000000000..2883a5f1f3
--- /dev/null
+++ b/coding/traffic.cpp
@@ -0,0 +1,27 @@
+#include "coding/traffic.hpp"
+
+#include "base/math.hpp"
+
+namespace coding
+{
+// static
+uint32_t const TrafficGPSEncoder::kLatestVersion = 0;
+uint32_t const TrafficGPSEncoder::kCoordBits = 30;
+double const TrafficGPSEncoder::kMinDeltaLat = ms::LatLon::kMinLat - ms::LatLon::kMaxLat;
+double const TrafficGPSEncoder::kMaxDeltaLat = ms::LatLon::kMaxLat - ms::LatLon::kMinLat;
+double const TrafficGPSEncoder::kMinDeltaLon = ms::LatLon::kMinLon - ms::LatLon::kMaxLon;
+double const TrafficGPSEncoder::kMaxDeltaLon = ms::LatLon::kMaxLon - ms::LatLon::kMinLon;
+
+// static
+uint32_t TrafficGPSEncoder::DoubleToUint32(double x, double min, double max)
+{
+  x = my::clamp(x, min, max);
+  return static_cast<uint32_t>(0.5 + (x - min) / (max - min) * ((1 << kCoordBits) - 1));
+}
+
+// static
+double TrafficGPSEncoder::Uint32ToDouble(uint32_t x, double min, double max)
+{
+  return min + static_cast<double>(x) * (max - min) / ((1 << kCoordBits) - 1);
+}
+}  // namespace coding