fix bug reorientation triangle

Geo/MTriangle.cpp

@@ -336,17 +336,20 @@ std::map<std::tuple<int, int, int>, indicesReoriented> MTriangleN::_tuple2indice
 namespace
 {
   void _getIndicesReorientedTri(int order, int rot, bool swap,
-                                indicesReoriented &indices) {
+                                indicesReoriented &indices)
+  {
     fullMatrix<double> ref = gmshGenerateMonomialsTriangle(order);
 
     indices.resize(ref.size1());
     for (int i = 0; i < ref.size1(); ++i) {
+      double u0 = ref(i, 0);
+      double v0 = ref(i, 1);
       double u = ref(i, 0);
       double v = ref(i, 1);
       double tmp;
       switch (rot) {
-        case 1: tmp = u; u = 1 - u - v; v = tmp; break;
-        case 2: tmp = v; v = 1 - u - v; u = tmp; break;
+        case 1: tmp = u; u = order - u - v; v = tmp; break;
+        case 2: tmp = v; v = order - u - v; u = tmp; break;
       }
       if (swap) {
         tmp = u;
@@ -354,6 +357,8 @@ namespace
         v = tmp;
       }
       for (int j = 0; j < ref.size1(); ++j) {
+        double u1 = ref(j, 0);
+        double v1 = ref(j, 1);
         if (u == ref(j, 0) && v == ref(j, 1)) {
           indices[i] = j;
           break;