Fixed a metal layer bug

gui/include/metadata_manager.hpp

@@ -21,4 +21,5 @@ public:
 
 private:
 	static std::map<std::string, std::vector<ObjectMetadata>> _metadataMap; // layer_name -> metadata_vector
+	static std::string _bottomMetalLayername; //name of layer marked bottom metal
 };
\ No newline at end of file

gui/src/metadata_manager.cpp

@@ -2,6 +2,7 @@
 #include <layer.hpp>
 
 std::map<std::string, std::vector<ObjectMetadata>> MetadataManager::_metadataMap = {};
+std::string MetadataManager::_bottomMetalLayername = "";
 
 bool MetadataManager::load(std::string filename, std::string layername) {
   //read data from file into vertex buffer, element buffer
@@ -38,6 +39,12 @@ bool MetadataManager::load(std::string filename, std::string layername) {
         std::cerr << "Encountered unknown directive " << c << " while parsing file " << filename << std::endl;
       }
     }
+    //If we load bottom metal, restore the infostrings
+    if (_bottomMetalLayername == layername) {
+      for (size_t i = 0; i < newDataVector.size(); ++i) {
+        newDataVector[i].info = _metadataMap[layername][i].info;
+      }
+    }
     _metadataMap[layername] = newDataVector;
     std::cout << "Loaded " << newDataVector.size() << " metadata entries for layer " << layername << " from " << filename << "." << std::endl;
     return true;
@@ -80,6 +87,7 @@ bool MetadataManager::addLayer(const Layer& layer) {
   return true;
 }
 void MetadataManager::markBottomMetal(std::string layername) {
+  _bottomMetalLayername = layername;
   std::ifstream file("C:\\Users\\Pascal\\repos\\rbcomb-sample-visualizer\\gui\\resources\\association\\sample-minicircuit-association.txt");
 
   std::string line;