fixes double neighbor assignement and cubes inside of empty volumes after skipping to grow

src/scene/mod.rs

@@ -175,6 +175,7 @@ impl Scene {
         }
 
         if self.rt_vertices.len() != 0 {
+            println!("number of quad vertices is {}", self.rt_vertices.len());
             (self.vertex_buffer_quad, self.vertex_buffer_memory_quad) = buffer::create_vertex_buffer(instance, device, &data, &self.rt_vertices)?;
             (self.index_buffer_quad, self.index_buffer_memory_quad) = buffer::create_index_buffer(&instance, &device, &data, &self.indices_rt)?;
         }