improve rendering performance by batching edge and cube draws

include/config.hpp

@@ -41,10 +41,10 @@ constexpr int REPULSION_GRID_REFRESH = 5; // Frames between grid rebuilds
 constexpr float VERLET_DAMPENING = 0.05;  // [0, 1]
 
 // Graph Drawing
-constexpr float VERTEX_SIZE = 0.1;
+constexpr float VERTEX_SIZE = 0.5;
 constexpr Color VERTEX_COLOR = GREEN;
 constexpr Color EDGE_COLOR = DARKGREEN;
-constexpr int DRAW_VERTICES_LIMIT = 10000;
+constexpr int DRAW_VERTICES_LIMIT = 100000;
 
 // Klotski Drawing
 constexpr int BOARD_PADDING = 5;

include/mass_springs.hpp

@@ -118,6 +118,8 @@ public:
 
   auto GetMass(const State &state) -> Mass &;
 
+  auto GetMass(const State &state) const -> const Mass &;
+
   auto AddSpring(const State &massA, const State &massB, float spring_constant,
                  float dampening_constant, float rest_length) -> void;
 

include/renderer.hpp

@@ -49,6 +49,10 @@ private:
   RenderTexture klotski_target;
   RenderTexture menu_target;
 
+  float *cube;
+  Mesh graph;
+  Material mat;
+
 public:
   bool mark_solutions;
   bool connect_solutions;
@@ -62,6 +66,7 @@ public:
     klotski_target = LoadRenderTexture(GetScreenWidth() / 2.0,
                                        GetScreenHeight() - MENU_HEIGHT);
     menu_target = LoadRenderTexture(GetScreenWidth(), MENU_HEIGHT);
+    AllocateGraphMesh();
   }
 
   Renderer(const Renderer &copy) = delete;
@@ -73,23 +78,31 @@ public:
     UnloadRenderTexture(render_target);
     UnloadRenderTexture(klotski_target);
     UnloadRenderTexture(menu_target);
+    UnloadMesh(graph);
+    UnloadMaterial(mat);
+    MemFree(cube);
   }
 
 public:
-  auto UpdateCamera(const MassSpringSystem &masssprings, const State &current)
-      -> void;
+  auto UpdateCamera(const MassSpringSystem &mass_springs,
+                    const State &current_state) -> void;
 
   auto UpdateTextureSizes() -> void;
 
-  auto DrawMassSprings(const MassSpringSystem &masssprings,
-                       const State &current,
+  auto AllocateGraphMesh() -> void;
+
+  auto ReallocateGraphMeshIfNecessary(const MassSpringSystem &mass_springs)
+      -> void;
+
+  auto DrawMassSprings(const MassSpringSystem &mass_springs,
+                       const State &current_state,
                        const std::unordered_set<State> &winning_states) -> void;
 
   auto DrawKlotski(const State &state, int hov_x, int hov_y, int sel_x,
                    int sel_y, int block_add_x, int block_add_y,
                    const WinCondition win_condition) -> void;
 
-  auto DrawMenu(const MassSpringSystem &masssprings, int current_preset,
+  auto DrawMenu(const MassSpringSystem &mass_springs, int current_preset,
                 const State &current_state,
                 const std::unordered_set<State> &winning_states) -> void;