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authorJohn Firebaugh <john.firebaugh@gmail.com>2016-07-06 11:22:59 -0700
committerJohn Firebaugh <john.firebaugh@gmail.com>2016-07-06 11:24:49 -0700
commit903d609b40b6d0f4873f7bb46d96f4a06d7b17d6 (patch)
tree9769c50e6769fc5e5bd71a6e1a9fba0dba790ac9
parent480e26c53f48900c5a1bd65aac7411144043cc24 (diff)
downloadqtlocation-mapboxgl-903d609b40b6d0f4873f7bb46d96f4a06d7b17d6.tar.gz
[core] Re-close polygons after clipping with clipper
-rw-r--r--package.json2
-rw-r--r--src/mbgl/tile/geometry_tile_data.cpp9
2 files changed, 9 insertions, 2 deletions
diff --git a/package.json b/package.json
index d959312fb6..cade232906 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
"express": "^4.11.1",
"mapbox-gl-shaders": "mapbox/mapbox-gl-shaders#d3a10d1a46b99d3da264cf2d1903cbde6fea3185",
"mapbox-gl-style-spec": "mapbox/mapbox-gl-style-spec#194fc55b6a7dd54c1e2cf2dd9048fbb5e836716d",
- "mapbox-gl-test-suite": "mapbox/mapbox-gl-test-suite#2e5addbbd6b3eafaa2984bfd863fd28071f2e481",
+ "mapbox-gl-test-suite": "mapbox/mapbox-gl-test-suite#29f7b2639a3a9faa521a5ee126cb3e31bc6d004b",
"node-gyp": "^3.3.1",
"request": "^2.72.0",
"tape": "^4.5.1"
diff --git a/src/mbgl/tile/geometry_tile_data.cpp b/src/mbgl/tile/geometry_tile_data.cpp
index 6e700aa633..2e465a6f65 100644
--- a/src/mbgl/tile/geometry_tile_data.cpp
+++ b/src/mbgl/tile/geometry_tile_data.cpp
@@ -28,7 +28,8 @@ static ClipperLib::Path toClipperPath(const GeometryCoordinates& ring) {
static GeometryCoordinates fromClipperPath(const ClipperLib::Path& path) {
GeometryCoordinates result;
- result.reserve(path.size());
+ result.reserve(path.size() + 1);
+
for (const auto& p : path) {
using Coordinate = GeometryCoordinates::coordinate_type;
assert(p.x >= std::numeric_limits<Coordinate>::min());
@@ -37,6 +38,12 @@ static GeometryCoordinates fromClipperPath(const ClipperLib::Path& path) {
assert(p.y <= std::numeric_limits<Coordinate>::max());
result.emplace_back(Coordinate(p.x), Coordinate(p.y));
}
+
+ // Clipper does not repeat initial point, but our geometry model requires it.
+ if (!result.empty()) {
+ result.push_back(result.front());
+ }
+
return result;
}