do not use shared pointers for buckets

include/llmr/map/tile.hpp

@@ -68,7 +68,7 @@ public:
     linevertexbuffer lineVertex;
     debug_font_buffer debugFontVertex;
 
-    std::shared_ptr<FillBuffer> fillBuffer;
+    FillBuffer fillBuffer;
 
     std::forward_list<Layer> layers;
 

include/llmr/renderer/bucket.hpp

@@ -10,7 +10,6 @@ class Painter;
 
 class Bucket {
 public:
-    virtual void draw(const Style& style, const std::string& layerName) = 0;
     virtual void render(Painter& painter) = 0;
 };
 

include/llmr/renderer/fill_bucket.hpp

@@ -13,15 +13,14 @@ struct pbf;
 
 class FillBucket : public Bucket {
 public:
-    FillBucket(const std::shared_ptr<FillBuffer>& buffer);
+    FillBucket(FillBuffer& buffer);
 
     void addGeometry(pbf& data);
 
-    virtual void draw(const Style& style, const std::string& layerName);
     virtual void render(Painter& painter);
 
 public:
-    std::shared_ptr<FillBuffer> buffer;
+    FillBuffer& buffer;
 
     struct group {
         uint32_t vertex_length;

include/llmr/style/style.hpp

@@ -34,7 +34,6 @@ struct FillStyle {
     float stroke_width = 1;
 };
 
-
 class Style {
 public:
     StrokeStyle strokeStyle(const std::string& layer_name) const;