make Element default constructable/movable

libsrc/meshing/bisect.cpp

@@ -1663,32 +1663,43 @@ namespace netgen
 
 
   int MarkHangingTets (T_MTETS & mtets, 
-		       const INDEX_2_CLOSED_HASHTABLE<PointIndex> & cutedges)
+		       const INDEX_2_CLOSED_HASHTABLE<PointIndex> & cutedges,
+                       TaskManager tm)                       
   {
+    static int timer = NgProfiler::CreateTimer ("MarkHangingTets");    
+    NgProfiler::RegionTimer reg (timer);    
+    
     int hanging = 0;
-    for (int i = 1; i <= mtets.Size(); i++)
+    // for (int i = 1; i <= mtets.Size(); i++)
-      {
+    ParallelForRange
-	MarkedTet & teti = mtets.Elem(i);
+      (tm, mtets.Size(), [&] (size_t begin, size_t end)
-
+       {
-	if (teti.marked)
+         bool my_hanging = false;
-	  {
+         for (size_t i = begin; i < end; i++)
-	    hanging = 1;
+           {
-	    continue;
+             MarkedTet & teti = mtets[i];
-	  }
+             
-
+             if (teti.marked)
-	for (int j = 0; j < 3; j++)
+               {
-	  for (int k = j+1; k < 4; k++)
+                 my_hanging = true;
-	    {
+                 continue;
-	      INDEX_2 edge(teti.pnums[j],
+               }
-			   teti.pnums[k]);
+             
-	      edge.Sort();
+             for (int j = 0; j < 3; j++)
-	      if (cutedges.Used (edge))
+               for (int k = j+1; k < 4; k++)
-		{
+                 {
-		  teti.marked = 1;
+                   INDEX_2 edge(teti.pnums[j],
-		  hanging = 1;
+                                teti.pnums[k]);
-		}
+                   edge.Sort();
-	    }
+                   if (cutedges.Used (edge))
-      }
+                     {
+                       teti.marked = 1;
+                       my_hanging = true;
+                     }
+                 }
+           }
+         if (my_hanging) hanging = true;         
+       });
 
     return hanging;
   }
@@ -3336,7 +3347,7 @@ namespace netgen
 
 
 	    hangingvol = 
-	      MarkHangingTets (mtets, cutedges) +
+	      MarkHangingTets (mtets, cutedges, opt.task_manager) +
 	      MarkHangingPrisms (mprisms, cutedges) +
 	      MarkHangingIdentifications (mids, cutedges);
 

libsrc/meshing/meshclass.cpp

@@ -926,7 +926,7 @@ namespace netgen
             PrintMessage (3, n, " volume elements");
             for (i = 1; i <= n; i++)
               {
-                Element el;
+                Element el(TET);
                 int hi, nep;
                 infile >> hi;
                 if (hi == 0) hi = 1;
@@ -1423,7 +1423,7 @@ namespace netgen
             PrintMessage (3, n, " volume elements");
             for (i = 1; i <= n; i++)
               {
-                Element el;
+                Element el(TET);
                 int hi, nep;
                 infile >> hi;
                 if (hi == 0) hi = 1;
@@ -1960,7 +1960,7 @@ namespace netgen
                 {
                   for (int j = 1; j <= el.GetNFaces(); j++)
                     {
-                      Element2d hel;
+                      Element2d hel(TRIG);
                       el.GetFace (j, hel);
                       hel.Invert();
                       hel.NormalizeNumbering();

libsrc/meshing/meshing3.cpp

@@ -390,7 +390,7 @@ GenerateMesh (Mesh & mesh, const MeshingParameters & mp)
 	      delfaces.SetSize (0);
 	      
 	      INDEX npi;
-	      Element newel;
+	      Element newel(TET);
 	      
 	      npi = mesh.AddPoint (inp);
 	      newel.SetNP(4);

libsrc/meshing/meshtype.cpp

@@ -967,7 +967,7 @@ namespace netgen
     return s;
   }
 
-
+  /*
   Element :: Element ()
   {
     typ = TET;
@@ -990,9 +990,8 @@ namespace netgen
 #ifdef PARALLEL
     partitionNumber = -1;
 #endif
-
   }
-
+  */
 
   Element :: Element (int anp)
   {
@@ -1061,12 +1060,15 @@ namespace netgen
     flags.fixed = 0;
     orderx = ordery = orderz = 1;
     is_curved =  typ != TET; // false;
+#ifdef PARALLEL
+    partitionNumber = -1;
+#endif
   }
 
 
 
 
-
+  /*
   Element & Element :: operator= (const Element & el2)
   {
     typ = el2.typ;
@@ -1083,7 +1085,7 @@ namespace netgen
     is_curved = el2.is_curved;
     return *this;
   }
-
+  */
 
 
   void Element :: SetNP (int anp)

libsrc/meshing/meshtype.hpp

@@ -660,13 +660,18 @@ namespace netgen
     flagstruct flags;
 
     ///
-    DLL_HEADER Element ();
+    DLL_HEADER Element () = default;
+    Element (const Element &) = default;
+    Element (Element &&) = default;
+    Element & operator= (const Element &) = default;
+    Element & operator= (Element &&) = default;
+
     ///
     Element (int anp);
     ///
     Element (ELEMENT_TYPE type);
     ///
-    Element & operator= (const Element & el2);
+    // Element & operator= (const Element & el2);
   
     ///
     void SetNP (int anp);

libsrc/meshing/refine.cpp

@@ -436,7 +436,7 @@ namespace netgen
 	   int ind = el.GetIndex();
 	   for (int j = 0; j < 8; j++)
 	   {
-	      Element nel;
+             Element nel(TET);
 	      for (int k = 1; k <= 4; k++)
 	        nel.PNum(k) = pnums.Get(reftab[j][k-1]);
 	      nel.SetIndex(ind);

libsrc/meshing/secondorder.cpp

@@ -204,7 +204,7 @@ namespace netgen
 	const Element & el = mesh.VolumeElement(i);
 	int onp = 0;
 
-	Element newel;
+	Element newel(TET);
 	newel.SetIndex (el.GetIndex());
 
 	static int betw_tet[6][3] =