Seperate line sections instead of clipping linestring

src/output_object.cpp

@@ -80,8 +80,27 @@ Geometry buildWayGeometry(OSMStore &osmStore, OutputObject const &oo, const Tile
 
 		case OutputGeometryType::LINESTRING:
 		{
+			auto const &ls = osmStore.retrieve<mmap::linestring_t>(oo.handle);
+
 			MultiLinestring out;
-			geom::intersection(osmStore.retrieve<mmap::linestring_t>(oo.handle), bbox.clippingBox, out);
+			if(ls.empty()) 
+				return out;
+
+			Linestring current_ls;
+			geom::append(current_ls, ls[0]);
+
+			for(size_t i = 1; i < ls.size(); ++i) {
+				if(!geom::intersects(Linestring({ ls[i-1], ls[i] }), bbox.clippingBox)) {
+					if(current_ls.size() > 1)
+						out.push_back(std::move(current_ls));
+					current_ls.clear();
+				}
+				geom::append(current_ls, ls[i]);
+			}
+
+			if(current_ls.size() > 1)
+				out.push_back(std::move(current_ls));
+
 			return out;
 		}