fixes

benchmarks/2d/periodic_rotation_on_axis.geo

@@ -36,7 +36,7 @@ Line Loop(s2b)= {l0, l022b, -l1b, -l011b};
 Ruled Surface(s2b)= {s2b};
 //Plane Surface(s2b)= {s2b};
 
-Periodic Line {l1b, l011b, l022b} = {l1, l011, l022};
+//Periodic Line {l1b, l011b, l022b} = {l1, l011, l022};
 
 // Periodic Surface seems to work properly only with Ruled Surfaces (meshing problem with Plane Surface)
 Periodic Surface s2b {Boundary{Surface{s2b};}} = s2 {Boundary{Surface{s2};}};

benchmarks/3d/CubePeriodic.geo

@@ -43,11 +43,6 @@ Volume (26) = {1000026};
 Physical Volume(1)={26};
 Physical Surface(10)={14:24:2};
 /*
-Periodic Line {1} = {5};
-Periodic Line {3} = {7};
-Periodic Line {9} = {10};
-Periodic Line {12} = {11};
-*/
 Periodic Line {4} = {2} ;
 Periodic Line {4} = {6} ;
 Periodic Line {4} = {8} ;
@@ -59,7 +54,7 @@ Periodic Line {1} = {3} ;
 Periodic Line {9} = {10} ;
 Periodic Line {9} = {11} ;
 Periodic Line {9} = {12} ;
-
+*/
 Periodic Surface 24 {1,2,3,4} = 16 {5,6,7,8};
 Periodic Surface 14 {10,5,9,1} = 22 {11,-7,12,-3};
 Periodic Surface 18 {9,8,12,4} = 20 {10,-6,11,-2};

benchmarks/3d/PeriodicRotationAndTranslation.geo

-
 lc = 1.0;
 R = 5;
 R_rotation = 15;
@@ -20,13 +19,11 @@ Extrude {0, 0, 1} {
   Surface{6};
 }
 
-// C'est cette opŽration (d'extrusion autour d'un axe) qui fait planter periodic surface
-// le bug Žtant dependant de l'angle d'extrusion specifie
-
-Extrude {{0, 1, 0}, {-R_rotation, 0, 0}, Pi/3} {
+Extrude {{0, 1, 0}, {-R_rotation, 0, 0}, Pi/4} {
   Surface{6};
 }
 
 Periodic Surface 28 {8, 9, 10, 11} = 6 {1, 2, 3, 4} ;
-Periodic Surface  50 {30, 31, 32, 33} = 6 {1, 2, 3, 4} ;
+Periodic Surface 50 {30, 31, 32, 33} = 6 {1, 2, 3, 4} ;
 
+// Periodic Surface {50} = {6} Rotate { {0, 1, 0}, {-R_rotation, 0, 0}, Pi/3} ;