New macro to obtain volumes information

macros/PrintGeometryInfo.C

@@ -0,0 +1,113 @@
+
+//*******************************************************************************************************
+//*** Description:  A ROOT macro to obtain volume information from a geometry in aGDML file
+//*** --------------
+//*** Usage: in ROOT/restRoot terminal: 
+//*** 1. Compile in root terminal:
+//*** root [0] .L PrintGeometryInfo.C
+//*** 2. Call with gdml file as argument:
+//*** root [1] PrintGeometryInfo("mygdml.gdml");
+//*** --------------
+//*** Output: 
+//*** The macro prints the properties (volume in cm^3, density in g/cm^3, material and some details about the structure of the geometry) 
+//*** of each volume in the geometry specified by the GDML file
+//*** --------------
+//*** Author: María Jiménez ([email protected])
+//*******************************************************************************************************
+
+struct VolumeInfo {
+    std::string name;
+    std::string parentName;
+    std::string material;
+    double density;
+    double volume;
+    int level;
+    int ndaughters;
+    int ID;
+};
+
+std::vector<VolumeInfo> volume_info;
+
+std::set<std::string> printed_volumes;
+std::map<std::string, int> volume_counts;
+
+
+void iterateOverVolumes(TGeoVolume *vol, const std::string& parentName, int level, int ID){
+    if(!vol) return;
+
+    std::string name = vol->GetName();
+    std::string matName;
+    double density = 0.0;
+    double volume = vol->Capacity();
+
+    TObjArray *daughters = vol->GetNodes();
+    int ndaughters;
+    if(daughters){
+        ndaughters = daughters->GetEntries();
+    } else{
+        ndaughters = 0;
+    }
+
+    TGeoMaterial *material = vol->GetMaterial();
+    if(material){
+        matName = material->GetName();
+        density = material->GetDensity();
+    }
+
+    if (printed_volumes.find(name) == printed_volumes.end()) {
+        volume_info.push_back({name, parentName, matName, density, volume, level, ndaughters, ID});
+        printed_volumes.insert(name);
+
+        if(daughters){
+            for(int i = 0; i < daughters->GetEntries(); i++){
+                TGeoNode *node = (TGeoNode*)daughters->At(i);
+                TGeoVolume *daughtervol = node->GetVolume();
+                iterateOverVolumes(daughtervol, name, level+1, i);
+            }
+        }
+
+    } else {
+        volume_info.push_back({name, parentName, matName, density, volume, level, ndaughters, ID});
+    }
+
+    volume_counts[name]++;
+}
+
+void GeometryInfo(const std::string &gdmlfile){
+    TGeoManager::Import(gdmlfile.c_str());
+    TGeoVolume *topVolume = gGeoManager->GetTopVolume();
+    cout << "\n" << endl;
+    cout << "The list of volumes and properties in this geometry : " << endl;
+    cout << "\n" << endl;
+    cout << "Top volume is called " << topVolume->GetName() << endl;
+    iterateOverVolumes(topVolume,"world",0,0);    
+}
+
+void PrintGeometryInfo(const std::string &gdmlfile){
+
+    GeometryInfo(gdmlfile);
+
+    for(const auto& info : volume_info){
+        for (int i = 0; i < info.level; ++i) {
+            std::cout << "\t";
+        }
+        std::cout << "Volume: " << info.name << ", Parent: " << info.parentName << ", Level: " << info.level << ", ID: " << info.ID;
+        if (volume_counts.find(info.name) != volume_counts.end()) {
+            std::cout << ", Volume Counts in mother volume: " << volume_counts[info.name];
+        }
+        std::cout << std::endl;
+        for (int i = 0; i < info.level; ++i) {
+            std::cout << "\t";
+        }
+        std::cout << "Material: " << info.material << ", Density: " << info.density << " g/cm^3" << ", Volume: " << info.volume << " cm^3" << ", Daughters: " << info.ndaughters << std::endl;
+        for (int i = 0; i < info.level; ++i) {
+            std::cout << "\t";
+        }
+        std::cout << "------------------------------------------" << std::endl;
+    }
+
+    volume_counts.clear();
+    printed_volumes.clear();
+    volume_info.clear();
+
+}