[core] Make mapbox::geometry::envelope usable without explicit template arguments

2 files changed, 15 insertions, 5 deletions

diff --git a/src/mbgl/geometry/feature_index.cpp b/src/mbgl/geometry/feature_index.cpp
index fff2fbd075..d3d523af0a 100644
--- a/src/mbgl/geometry/feature_index.cpp
+++ b/src/mbgl/geometry/feature_index.cpp
@@ -24,7 +24,7 @@ void FeatureIndex::insert(const GeometryCollection& geometries,
                           const std::string& bucketName) {
     for (const auto& ring : geometries) {
         grid.insert(IndexedSubfeature { index, sourceLayerName, bucketName, sortIndex++ },
-                    mapbox::geometry::envelope<GeometryCoordinates, int16_t>(ring));
+                    mapbox::geometry::envelope(ring));
     }
 }
 
@@ -59,7 +59,7 @@ void FeatureIndex::query(
         const GeometryTile& geometryTile,
         const Style& style) const {
 
-    mapbox::geometry::box<int16_t> box = mapbox::geometry::envelope<GeometryCollection, int16_t>(queryGeometry);
+    mapbox::geometry::box<int16_t> box = mapbox::geometry::envelope(queryGeometry);
 
     const float pixelsToTileUnits = util::EXTENT / tileSize / scale;
     const int16_t additionalRadius = std::min<int16_t>(util::EXTENT, std::ceil(style.getQueryRadius() * pixelsToTileUnits));
diff --git a/src/mbgl/tile/geometry_tile.hpp b/src/mbgl/tile/geometry_tile.hpp
index 20efc3c374..4db5d4dbeb 100644
--- a/src/mbgl/tile/geometry_tile.hpp
+++ b/src/mbgl/tile/geometry_tile.hpp
@@ -28,9 +28,19 @@ enum class FeatureType : uint8_t {
 // Normalized vector tile coordinates.
 // Each geometry coordinate represents a point in a bidimensional space,
 // varying from -V...0...+V, where V is the maximum extent applicable.
-using GeometryCoordinate  = Point<int16_t>;
-using GeometryCoordinates = std::vector<GeometryCoordinate>;
-using GeometryCollection  = std::vector<GeometryCoordinates>;
+using GeometryCoordinate = Point<int16_t>;
+
+class GeometryCoordinates : public std::vector<GeometryCoordinate> {
+public:
+    using coordinate_type = int16_t;
+    using std::vector<GeometryCoordinate>::vector;
+};
+
+class GeometryCollection : public std::vector<GeometryCoordinates> {
+public:
+    using coordinate_type = int16_t;
+    using std::vector<GeometryCoordinates>::vector;
+};
 
 class GeometryTileFeature : private util::noncopyable {
 public: