Make QDebug accept Vertex

QTProject/mesh.cpp

 #include "mesh.h"
 
+QDebug operator<< (QDebug d, const Vertex &v) {
+    d.nospace() << "Vertex(" << v.pos << ", " << v.normal << ", " << v.tex << ")";
+    d.space();
+    return d;
+}
+
 
 Mesh::MeshEntry::MeshEntry()
 {

QTProject/mesh.h

@@ -30,6 +30,8 @@ struct Vertex
     }
 };
 
+QDebug operator<< (QDebug d, const Vertex &v);
+
 class Mesh
 {
 public: