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Debug of MEDCouplingUMesh::areCellsIncludedInMe : now duplicated cells in mesh that...
[tools/medcoupling.git] / src / MEDCoupling_Swig / MEDCouplingBasicsTest5.py
index 3f3af10cbb08bf4efe7a2cd7627290fb0646479c..1bd4d3afb40d4f7ed7f46d4c93f8659daf2a04dd 100644 (file)
@@ -1,5 +1,5 @@
 #  -*- coding: utf-8 -*-
-# Copyright (C) 2007-2016  CEA/DEN, EDF R&D
+# Copyright (C) 2007-2020  CEA/DEN, EDF R&D
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 #
 
-from MEDCoupling import *
+import sys
+if sys.platform == "win32":
+    from MEDCouplingCompat import *
+else:
+    from medcoupling import *
+
 import unittest
 from math import pi,e,sqrt,cos,sin
 from datetime import datetime
 from MEDCouplingDataForTest import MEDCouplingDataForTest
-import rlcompleter,readline # this line has to be here, to ensure a usability of MEDCoupling/MEDLoader. B4 removing it please notify to anthony.geay@cea.fr
+import rlcompleter,readline # this line has to be here, to ensure a usability of MEDCoupling/MEDLoader. B4 removing it please notify to anthony.geay@edf.fr
 
 class MEDCouplingBasicsTest5(unittest.TestCase):
     def testSwig2FieldDoubleBuildSubPartRange1(self):
@@ -31,7 +36,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m=MEDCouplingDataForTest.build2DTargetMesh_1()
         f=MEDCouplingFieldDouble(ON_CELLS)
         f.setMesh(m)
-        arr=DataArrayDouble(5,2) ; arr[:,0]=range(7,12) ; arr[:,1]=100+arr[:,0]
+        arr = DataArrayDouble(5, 2) ; arr[:, 0] = list(range(7, 12)) ; arr[:, 1] = 100 + arr[:, 0]
         f.setArray(arr)
         f.checkConsistencyLight()
         ff=f[1:-1:2]
@@ -61,7 +66,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         #ON_NODES
         f=MEDCouplingFieldDouble(ON_NODES)
         f.setMesh(m)
-        arr=DataArrayDouble(9,2) ; arr[:,0]=range(7,16) ; arr[:,1]=100+arr[:,0]
+        arr = DataArrayDouble(9, 2) ; arr[:, 0] = list(range(7, 16)) ; arr[:, 1] = 100 + arr[:, 0]
         f.setArray(arr)
         f.checkConsistencyLight()
         ff=f[1:-1:2]
@@ -96,7 +101,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         #ON_GAUSS_NE
         f=MEDCouplingFieldDouble(ON_GAUSS_NE)
         f.setMesh(m)
-        arr=DataArrayDouble(18,2) ; arr[:,0]=range(7,25) ; arr[:,1]=100+arr[:,0]
+        arr = DataArrayDouble(18, 2) ; arr[:, 0] = list(range(7, 25)) ; arr[:, 1] = 100 + arr[:, 0]
         f.setArray(arr)
         f.checkConsistencyLight()
         ff=f[1:-1:2]
@@ -130,7 +135,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         f.setGaussLocalizationOnCells([3],[0,0,1,0,1,1,1,0],[1.1,1.1,2.2,2.2,3.,3.],[0.2,0.4,0.4]);
         f.setGaussLocalizationOnCells([1],[0,0,1,0,1,0],[1.1,1.1,2.2,2.2,3.,3.,4.,4.],[0.1,0.1,0.4,0.4]);
         f.setGaussLocalizationOnCells([2],[0,0,1,0,1,0],[1.1,1.1,2.2,2.2,3.,3.,4.,4.,5.,5.],[0.1,0.1,0.4,0.3,0.1]);
-        arr=DataArrayDouble(16,2) ; arr[:,0]=range(7,23) ; arr[:,1]=100+arr[:,0]
+        arr = DataArrayDouble(16, 2) ; arr[:, 0] = list(range(7, 23)) ; arr[:, 1] = 100 + arr[:, 0]
         f.setArray(arr)
         f.checkConsistencyLight()
         ff=f[1:-1:2]
@@ -230,7 +235,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         time_deb = datetime.now()
         a1=DataArrayDouble(len(d))
         b1=DataArrayInt(len(d))
-        m1s=[m1[i] for i in xrange(m1.getNumberOfCells())]
+        m1s = [m1[i] for i in range(m1.getNumberOfCells())]
         for j,pt in enumerate(d):
             eter=1e308
             fter=-1
@@ -258,7 +263,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m=MEDCouplingUMesh("mesh",2)
         m.setCoords(coo)
         m.allocateCells()
-        for i in xrange(24):
+        for i in range(24):
             m.insertNextCell(NORM_QUAD4,conn[4*i:4*i+4])
             pass
         m.checkConsistency()
@@ -288,7 +293,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         d[:,1]*=pi/180. # angle in radian
         d=d.fromPolarToCart()
         d+=zeBary
-        m=MEDCouplingUMesh("quad8",2) ; m.allocateCells() ; m.insertNextCell(NORM_QUAD8,range(8)) ; m.setCoords(d)
+        m = MEDCouplingUMesh("quad8", 2) ; m.allocateCells() ; m.insertNextCell(NORM_QUAD8, list(range(8))) ; m.setCoords(d)
         self.assertTrue(m.computeCellCenterOfMass().isEqual(DataArrayDouble(zeBary,1,2),1e-13))
         self.assertAlmostEqual(float(m.getMeasureField(False).getArray()),pi*zeRadius*zeRadius,12)
         tri32D=m.buildDescendingConnectivity()[0][0] ; tri32D.zipCoords()
@@ -307,7 +312,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         d[:,1]*=pi/180. # angle in radian
         d=d.fromPolarToCart()
         d+=zeBary
-        m=MEDCouplingUMesh("tri6",2) ; m.allocateCells() ; m.insertNextCell(NORM_TRI6,range(6)) ; m.setCoords(d)
+        m = MEDCouplingUMesh("tri6", 2) ; m.allocateCells() ; m.insertNextCell(NORM_TRI6, list(range(6))) ; m.setCoords(d)
         self.assertTrue(m.computeCellCenterOfMass().isEqual(DataArrayDouble(zeBary,1,2),1e-13))
         self.assertAlmostEqual(float(m.getMeasureField(False).getArray()),pi*zeRadius*zeRadius,12)
         # spaceDim=3 TRI6 becomes TRI3 ... for the moment
@@ -325,7 +330,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         d[:,1]*=pi/180. # angle in radian
         d=d.fromPolarToCart()
         d+=zeBary
-        m=MEDCouplingUMesh("qpolyg",2) ; m.allocateCells() ; m.insertNextCell(NORM_QPOLYG,range(10)) ; m.setCoords(d)
+        m = MEDCouplingUMesh("qpolyg", 2) ; m.allocateCells() ; m.insertNextCell(NORM_QPOLYG, list(range(10))) ; m.setCoords(d)
         self.assertTrue(m.computeCellCenterOfMass().isEqual(DataArrayDouble(zeBary,1,2),1e-13))
         self.assertAlmostEqual(float(m.getMeasureField(False).getArray()),pi*zeRadius*zeRadius,12)
         # spaceDim=3 QPOLYG becomes POLYG ... for the moment
@@ -469,7 +474,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         s=slice(18,1,-2)
         self.assertEqual(DataArray.GetNumberOfItemGivenBESRelative(s),9)
         self.assertRaises(InterpKernelException,DataArray.GetNumberOfItemGivenBES,s)
-        self.assertEqual(sum([DataArray.GetNumberOfItemGivenBESRelative(DataArray.GetSlice(s,i,4)) for i in xrange(4)]),DataArray.GetNumberOfItemGivenBESRelative(s))
+        self.assertEqual(sum([DataArray.GetNumberOfItemGivenBESRelative(DataArray.GetSlice(s, i, 4)) for i in range(4)]), DataArray.GetNumberOfItemGivenBESRelative(s))
         self.assertEqual(DataArray.GetSlice(s,0,4),slice(18,14,-2))
         self.assertEqual(DataArray.GetSlice(s,1,4),slice(14,10,-2))
         self.assertEqual(DataArray.GetSlice(s,2,4),slice(10,6,-2))
@@ -537,7 +542,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         #
         maxNbCSN=nbOfCellsSharingNodes.getMaxValue()[0]
         arr3=DataArrayDouble(f.getMesh().getNumberOfNodes(),f.getArray().getNumberOfComponents()) ; arr3[:]=0.
-        for i in xrange(1,maxNbCSN+1):
+        for i in range(1, maxNbCSN + 1):
             ids=nbOfCellsSharingNodes.findIdsEqual(i)
             if len(ids)==0:
                 continue
@@ -601,7 +606,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m=MEDCoupling1SGTUMesh("m",NORM_QUAD4)
         mem_m=m.getHeapMemorySize()
         m.allocateCells(5)
-        self.assertIn(m.getHeapMemorySize()-mem_m,xrange(5*4*4,5*4*4+32))
+        self.assertIn(m.getHeapMemorySize() - mem_m, list(range(5 * 4 * MEDCouplingSizeOfIDs()//8, 5 * 4 * MEDCouplingSizeOfIDs()//8 + 32)))
         self.assertEqual(m.getNodalConnectivity().getNbOfElemAllocated(),20)
         m.setCoords(um.getCoords())
         m.insertNextCell([1,0,6,7])
@@ -1014,7 +1019,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertEqual(d.getInfoOnComponents(),["aa","bbb"])
         ref=d.getHeapMemorySize()
         d.desallocate()
-        self.assertEqual(ref-d.getHeapMemorySize(),6*4)
+        self.assertEqual(ref-d.getHeapMemorySize(),6*MEDCouplingSizeOfIDs()//8)
         self.assertTrue(not d.isAllocated())
         self.assertEqual(d.getInfoOnComponents(),["aa","bbb"])
         self.assertRaises(InterpKernelException,d.checkAllocated)
@@ -1405,7 +1410,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         valuesToTest=f.getValueOnMulti(targetPointCoordsXY);
         self.assertEqual(196,valuesToTest.getNumberOfTuples());
         self.assertEqual(1,valuesToTest.getNumberOfComponents());
-        for i in xrange(40):
+        for i in range(40):
             self.assertAlmostEqual(targetFieldValsExpected[i],valuesToTest.getIJ(i,0),10)
             pass
         fd=f.getDiscretization()
@@ -1430,7 +1435,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
             pass
         #
         pass
-    
+
     # test the when input slice is all the same object is return by MEDCouplingMesh.buildPartRange
     def testSwig2MeshPartSlice1(self):
         a=DataArrayDouble(4) ; a.iota()
@@ -1462,7 +1467,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertEqual(f4.getMesh(),None)
         pass
 
-    # test a simple node to cell convertion of a field
+    # test a simple node to cell conversion of a field
     def testSwig2NodeToCellDiscretization1(self):
         f=MEDCouplingFieldDouble(ON_NODES) ; f.setTime(1.1,2,3)
         a1=DataArrayDouble(4) ; a1.iota()
@@ -1482,26 +1487,6 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         exp=DataArrayDouble([18.5,118.5,17.5,117.5,16.5,116.5,14.5,114.5,13.5,113.5,12.5,112.5],6,2) ; exp.setInfoOnComponents(["aa [km]","bbb [kJ]"])
         self.assertTrue(f2.getArray().isEqual(exp,1e-13))
         pass
-    
-    def testSwig2NonRegressionBugIntersectMeshes1(self):
-        src=MEDCouplingUMesh("src",2)
-        src.setCoords(DataArrayDouble([-2.5,-3,-2.5,3,2.5,3],3,2))
-        src.allocateCells()
-        src.insertNextCell(NORM_TRI3,[0,1,2])
-        #
-        trg=MEDCouplingUMesh("trg",2)
-        trg.setCoords(DataArrayDouble([-2.5,-3.,0.,-3.,0.,-2.,-2.,0.,-2.25,0.,-2.5,0.,-2.5,-1.5,0.,-2.5,-1.25,-3.,-1.414213562373095,-1.414213562373095],10,2))
-        trg.allocateCells()
-        trg.insertNextCell(NORM_QPOLYG,[2,1,0,5,3,7,8,6,4,9])
-        #
-        a,b,c=MEDCouplingUMesh.Intersect2DMeshes(src,trg,1.0e-8)
-        a.mergeNodes(1e-8)
-        self.assertTrue(a.getCoords().isEqual(DataArrayDouble([-2.5,-3.,-2.5,3.,2.5,3.,0.,-3.,0.,-2.,-2.,0.,-2.25,0.,-2.5,0.,-2.5,-1.5,0.,-2.5,-1.25,-3.,-1.414213562373095,-1.414213562373095,-1.2803687993289596,-1.5364425591947515,-1.8901843996644798,-2.2682212795973755,-1.81117884244736,-0.8483107924994473,-2.5,1.5,0.,3.,0.6098156003355202,0.7317787204026243],18,2),1e-12))
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([32,12,0,7,5,13,8,6,14,32,7,1,2,12,5,15,16,17,14,6])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,9,20])))
-        self.assertTrue(b.isEqual(DataArrayInt([0,0])))
-        self.assertTrue(c.isEqual(DataArrayInt([0,-1])))
-        pass
 
     def testSwig2MeshOrientCorrectly2DCells1(self):
         m=MEDCouplingUMesh("mesh",2)
@@ -1522,7 +1507,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         pass
 
     def testSwig2Hexa8HavingFacesWarped1(self):
-        """ This test is bases on a "error" of interpolation detected. After investigation cell #3 of src is warped that leads to the fact that when trg is 
+        """ This test is bases on a "error" of interpolation detected. After investigation cell #3 of src is warped that leads to the fact that when trg is
         intersected with src the sum of intersection volume is greater than the volume of the trg cell.
         A test that can be done is to split the cell #3 of src into tetrohedrons and by summing all the volumes it does not fit the volume computed of cell#3 unsplitted (expect for
         GENERAL_24).
@@ -1572,7 +1557,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         #
         trs=[[0.,0.,-1.],[0.,0.,1.],[1.,0.,0.],[0.,-1.,0.],[-1.,0.,0.],[0.,1.,0.]]
         for i,t in enumerate(trs):
-            for j in xrange(64):
+            for j in range(64):
                 j2=(j//16) ; j1=((j%16)//4) ; j0=(j%4)
                 m11=m1.deepCopy()
                 m11.rotate([0.,0.,0.],[0.,0.,1.],float(j0)*pi/2)
@@ -1620,7 +1605,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertTrue(m.getCellsContainingPoint((-0.4,-0.4),1e-12).isEqual(DataArrayInt([1])))
         self.assertTrue(m.getCellsContainingPoint((0.,-0.4),1e-12).isEqual(DataArrayInt([0,1])))
         pass
-    
+
     def testSwig2GetCellsContainingPointsForNonConvexPolygon2(self):
         coo=DataArrayDouble([-0.5,-0.5,-0.5,0.5,0.5,0.5,0.5,-0.5,-2.0816681711721685e-17,-2.0816681711721685e-17,-0.17677669529663687,0.1767766952966369,0.,0.5,0.5,0.,0.17677669529663684,-0.17677669529663692,0.17677669529663692,0.17677669529663684,-0.17677669529663692,-0.17677669529663687,0.,-0.5,-0.5,0.,0.33838834764831843,-0.3383883476483185,-0.33838834764831843,0.33838834764831843,-0.21213203435596423,0.21213203435596426,0.2121320343559642,-0.2121320343559643,0.21213203435596426,0.2121320343559642,-0.21213203435596423,-0.21213203435596428,0.3560660171779821,-0.35606601717798214,-0.35606601717798214,0.35606601717798214,0.19445436482630052,-0.19445436482630063,-0.19445436482630055,0.19445436482630057,0.,0.27],24,2)
         m=MEDCouplingUMesh("mesh",2) ; m.setCoords(coo) ; m.allocateCells()
@@ -1790,102 +1775,6 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertTrue(p.getCoords().isEqual(DataArrayDouble([0.,0.,1.,0.,2.,0.,3.,0.,4.,0.,5.,0.,0.,1.,1.,1.,2.,1.,3.,1.,4.,1.,5.,1.,0.,2.,1.,2.,2.,2.,3.,2.,4.,2.,5.,2.,0.,3.,1.,3.,2.,3.,3.,3.,4.,3.,5.,3.,0.,4.,1.,4.,2.,4.,3.,4.,4.,4.,5.,4.,0.,5.,1.,5.,2.,5.,3.,5.,4.,5.,5.,5.,0.5,0.,0.,0.5,0.5,1.,1.,0.5,1.5,0.,1.5,1.,2.,0.5,2.5,0.,2.5,1.,3.,0.5,3.5,0.,3.5,1.,4.,0.5,4.5,0.,4.5,1.,5.,0.5,1.,1.5,1.5,2.,2.,1.5,2.5,2.,3.,1.5,3.5,2.,4.,1.5,4.5,2.,5.,1.5,0.5,2.,0.,2.5,0.5,3.,1.,2.5,2.,2.5,2.5,3.,3.,2.5,3.5,3.,4.,2.5,4.5,3.,5.,2.5,0.,3.5,0.5,4.,1.,3.5,1.5,3.,1.5,4.,2.,3.5,3.,3.5,3.5,4.,4.,3.5,4.5,4.,5.,3.5,0.,4.5,0.5,5.,1.,4.5,1.5,5.,2.,4.5,2.5,4.,2.5,5.,3.,4.5,4.,4.5,4.5,5.,5.,4.5,0.,1.5,0.5,1.5,1.5,2.5,2.5,3.5,3.5,4.5,3.5,5.0],100,2),1e-13))
         pass
 
-    def testSwig2Conformize2D1(self):
-        eps = 1.0e-8
-        coo = [0.,-0.5,0.,0.,0.5,0.,0.5,-0.5,0.25,
-               -0.1,0.25,0.,0.5,-0.1,0.,0.5,0.5,0.5,0.25,0.4,0.25,0.5,0.5,0.4]
-        conn = [5,5,2,6,4,5,6,3,0,1,5,4,5,10,8,11,9,5,11,2,1,7,10,9]
-        connI = [0,5,12,17,24]
-        m = MEDCouplingUMesh("box",2)
-        cooArr = DataArrayDouble(coo,len(coo)/2,2)
-        m.setCoords(cooArr)
-        m.setConnectivity(DataArrayInt(conn),DataArrayInt(connI))
-        m.mergeNodes(eps)
-        m.checkConsistencyLight()
-        self.assertTrue(m.conformize2D(eps).isEqual(DataArrayInt([3])))
-        self.assertEqual(m.getCoords().getHiddenCppPointer(),cooArr.getHiddenCppPointer()) # check that coordinates remain the same here
-        self.assertTrue(m.getNodalConnectivity().isEqual(DataArrayInt([5,5,2,6,4,5,6,3,0,1,5,4,5,10,8,11,9,5,11,2,5,1,7,10,9])))
-        self.assertTrue(m.getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,12,17,25])))
-        pass
-
-    def testSwig2Conformize2D2(self):
-        eps = 1.0e-8
-        coo=DataArrayDouble([-10,-6,0,-6,0,0,7,0,-10,2,0,2,0,6,7,6,0,8,7,8,-10,12,-4,12,0,12,0,11,7,11,-4,16,0,16,7,16],18,2)
-        conn=DataArrayInt([2,3,7,6, 13,16,17,14, 4,10,12,5, 9,14,13,8, 8,9,7,6, 5,4,0,1, 16,12,11,15])
-        m=MEDCoupling1SGTUMesh("mesh",NORM_QUAD4)
-        m.setCoords(coo)
-        m.setNodalConnectivity(conn)
-        m=m.buildUnstructured()
-        self.assertTrue(m.conformize2D(eps).isEqual(DataArrayInt([0,1,2,5])))
-        self.assertEqual(m.getCoords().getHiddenCppPointer(),coo.getHiddenCppPointer()) # check that coordinates remain the same here
-        self.assertTrue(m.getNodalConnectivity().isEqual(DataArrayInt([5,2,3,7,6,5, 5,13,12,16,17,14, 5,4,10,11,12,13,8,6,5, 4,9,14,13,8, 4,8,9,7,6, 5,5,4,0,1,2, 4,16,12,11,15])))
-        self.assertTrue(m.getNodalConnectivityIndex().isEqual(DataArrayInt([0,6,12,21,26,31,37,42])))
-        pass
-
-    def testSwigSplit2DCells1(self):
-        coo=DataArrayDouble([[0,0],[1,0],[1,1],[0,1],[0.5,0],[1,0.5],[0.5,1],[0.,0.5]])
-        m=MEDCouplingUMesh("mesh",2)
-        m.setCoords(coo)
-        m.allocateCells()
-        m.insertNextCell(NORM_QUAD8,[0,1,2,3,4,5,6,7])
-        _,d,di,_,_=m.buildDescendingConnectivity()
-        subb=DataArrayInt([5])
-        subbi=DataArrayInt([0,0,1,1,1])
-        mid=DataArrayInt([-1,-1])
-        midi=DataArrayInt([0,0,2,2,2])
-        self.assertEqual(2,m.split2DCells(d,di,subb,subbi,mid,midi))
-        self.assertTrue(m.getNodalConnectivity().isEqual(DataArrayInt([32,0,1,5,2,3,4,8,9,6,7])))
-        self.assertTrue(m.getNodalConnectivityIndex().isEqual(DataArrayInt([0,11])))
-        self.assertTrue(m.getCoords().isEqual(DataArrayDouble([[0,0],[1,0],[1,1],[0,1],[0.5,0],[1,0.5],[0.5,1],[0.,0.5],[1.,0.25],[1.,0.75]]),1e-12))
-        pass
-
-    def testSwig2Conformize2D3(self):
-        eps = 1.0e-8
-        coo=DataArrayDouble([-10,-6,0,-6,0,0,7,0,-10,2,0,2,0,6.5,7,6.5,0,8,7,8,-10,12,-4,12,0,12,0,11,7,11,-4,16,0,16,7,16],18,2)
-        conn=DataArrayInt([2,3,7,6, 13,16,17,14, 4,10,12,5, 9,14,13,8, 8,9,7,6, 5,4,0,1, 16,12,11,15])
-        m=MEDCoupling1SGTUMesh("mesh",NORM_QUAD4)
-        m.setCoords(coo)
-        m.setNodalConnectivity(conn)
-        m=m.buildUnstructured()
-        m.convertLinearCellsToQuadratic()
-        self.assertTrue(m.conformize2D(eps).isEqual(DataArrayInt([0,1,2,5])))
-        self.assertTrue(m.getCoords().getHiddenCppPointer()!=coo.getHiddenCppPointer()) # coordinates are not the same here contrary to testSwig2Conformize2D2 ...
-        self.assertTrue(m.getCoords()[:18].isEqual(coo,1e-12)) # but the 18 first nodes are the same
-        pass
-
-    def testSwig2Conformize2D4(self):
-        eps = 1.0e-8
-        coo=DataArrayDouble([-10,-6,0,-6,0,0,7,0,-10,2,0,2,0,6.5,7,6.5,0,8,7,8,-10,12,-4,12,0,12,0,11,7,11,-4,16,0,16,7,16],18,2)
-        conn=DataArrayInt([2,3,7,6, 13,16,17,14, 4,10,12,5, 9,14,13,8, 8,9,7,6, 5,4,0,1, 16,12,11,15])
-        m=MEDCoupling1SGTUMesh("mesh",NORM_QUAD4)
-        m.setCoords(coo)
-        m.setNodalConnectivity(conn)
-        m=m.buildUnstructured()
-        m.convertLinearCellsToQuadratic()
-        self.assertEqual(42,m.getNumberOfNodes())
-        oldCoo=m.getCoords().deepCopy()
-        m.conformize2D(eps)
-        self.assertTrue(m.getCoords()[:42].isEqual(oldCoo,1e-12))
-        self.assertTrue(m.getNodalConnectivity().isEqual(DataArrayInt([32,2,3,7,6,5,18,19,20,42,43,32,13,12,16,17,14,44,38,23,24,25,32,4,10,11,12,13,8,6,5,26,45,39,44,31,34,42,29,8,9,14,13,8,30,25,31,32,8,8,9,7,6,32,33,20,34,32,5,4,0,1,2,29,35,36,46,43,8,16,12,11,15,38,39,40,41])))
-        self.assertTrue(m.getNodalConnectivityIndex().isEqual(DataArrayInt([0,11,22,39,48,57,68,77])))
-        self.assertTrue(m.getCoords().isEqual(DataArrayDouble([[-10.,-6.0],[0.,-6.0],[0.,0.0],[7.,0.0],[-10.,2.0],[0.,2.0],[0.,6.5],[7.,6.5],[0.,8.0],[7.,8.0],[-10.,12.0],[-4.,12.0],[0.,12.0],[0.,11.0],[7.,11.0],[-4.,16.0],[0.,16.0],[7.,16.0],[3.5, 0.0],[7.,3.25],[3.5, 6.5],[0.,3.25],[0.,13.5],[3.5, 16.0],[7.,13.5],[3.5, 11.0],[-10.,7.0],[-5.,12.0],[0.,7.0],[-5.,2.0],[7.,9.5],[0.,9.5],[3.5, 8.0],[7.,7.25],[0.,7.25],[-10.,-2.0],[-5.,-6.0],[0.,-2.0],[0.,14.0],[-2.,12.0],[-4.,14.0],[-2.,16.0],[0.,4.25],[0.,1.0],[0.,11.5],[-7.,12.0],[0.,-3.]]),1e-12))
-        pass
-
-    def testSwig2Conformize2D5(self):
-        eps=1e-8
-        coo=DataArrayDouble([[2,2],[2,-6],[10,-2],[-2,-2],[6,0],[6,-4],[2,7],[2,4.5],[-1.4641016151377544,0],[-1.950753362380551,-1.3742621398390762],[-7,-3],[-0.8284271247461898,-4.82842712474619],[0.26794919243112281,3.5],[0,1.4641016151377548],[-4.4753766811902755,-2.1871310699195381],[-3.9142135623730949,-3.9142135623730949],[-1.8042260651806146,-3.23606797749979]])
-        m=MEDCouplingUMesh("mesh",2)
-        m.allocateCells()
-        m.setCoords(coo)
-        m.insertNextCell(NORM_TRI6,[1,2,0,5,4,3])
-        m.insertNextCell(NORM_TRI6,[8,6,0,12,7,13])
-        m.insertNextCell(NORM_TRI6,[11,9,10,16,14,15])
-        self.assertTrue(m.conformize2D(eps).isEqual(DataArrayInt([0])))
-        self.assertTrue(m.getCoords().isEqual(DataArrayDouble([2.,2.,2.,-6.,10.,-2.,-2.,-2.,6.,0.,6.,-4.,2.,7.,2.,4.5,-1.4641016151377544,0.,-1.950753362380551,-1.3742621398390762,-7.,-3.,-0.8284271247461898,-4.82842712474619,0.2679491924311228,3.5,8.881784197001252e-16,1.4641016151377548,-4.4753766811902755,-2.187131069919538,-3.914213562373095,-3.914213562373095,-1.8042260651806146,-3.236067977499789,-1.7705659643687133,-0.6647725630649153,0.46926627053963865,-5.695518130045146],19,2),1e-12))
-        self.assertTrue(m.getNodalConnectivity().isEqual(DataArrayInt([32,1,2,0,8,9,11,5,4,13,17,16,18,6,8,6,0,12,7,13,6,11,9,10,16,14,15])))
-        self.assertTrue(m.getNodalConnectivityIndex().isEqual(DataArrayInt([0,13,20,27])))
-        pass
-
     def testSwigExtendedSlice1(self):
         d=DataArrayInt([5,6,7])
         self.assertTrue(d[2:].isEqual(DataArrayInt([7])))
@@ -2007,7 +1896,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         gaussCoords=refCoords[:] ; gaussCoords[14]=0.9999999999999 # change z of point #4 0.999... instead of 1. because with shape function it leads to division by 0. !
         fGauss.setGaussLocalizationOnType(NORM_PYRA13,refCoords,gaussCoords,weights)
         arrOfDisc2=fGauss.getLocalizationOfDiscr()
-        self.assertTrue(arrOfDisc2.isEqual(coo,1e-10)) # be less exigent 1e-10 instead of 1e-12 due to shape function sensitivity arount 0.,0.,1. !
+        self.assertTrue(arrOfDisc2.isEqual(coo,1e-10)) # be less exigent 1e-10 instead of 1e-12 due to shape function sensitivity around 0.,0.,1. !
         pass
 
     def testSwig2Tri7GP1(self):
@@ -2015,7 +1904,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m=MEDCouplingUMesh("mesh",2) ; m.setCoords(coo)
         m.allocateCells()
         # the cell description is exactly those described in the description of TRI7 in MED file 3.0.7 documentation
-        m.insertNextCell(NORM_TRI7,range(7))
+        m.insertNextCell(NORM_TRI7, list(range(7)))
         refCoords=[0.,0.,1.,0.,0.,1.,0.5,0.,0.5,0.5,0.,0.5,0.3333333333333333,0.3333333333333333]
         gaussCoords=[0.3333333333333333,0.3333333333333333,0.470142064105115,0.470142064105115,0.05971587178977,0.470142064105115,0.470142064105115,0.05971587178977,0.101286507323456,0.101286507323456,0.797426985353088,0.101286507323456,0.101286507323456,0.797426985353088]
         weights=[0.062969590272413,0.062969590272413,0.062969590272413,0.066197076394253,0.066197076394253,0.066197076394253,0.1125]
@@ -2118,6 +2007,26 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertTrue(m.getNodalConnectivityIndex().isEqual(DataArrayInt([0,7])))
         pass
 
+    def testSwig2ColinearizeKeepingConform2D1(self):
+        eps = 1.0e-6
+        # Just to get a nice coords array ...
+        mm = MEDCouplingCMesh(); arr = DataArrayDouble([0.0, 1.0,2.0])
+        mm.setCoords(arr, arr);  mm = mm.buildUnstructured();   coo = mm.getCoords()
+         
+        mesh = MEDCouplingUMesh("M", 2)
+        mesh.setCoords(coo)
+        c = [NORM_POLYGON, 0,1,4,7,6,3,  NORM_QUAD4, 1,2,5,4,  NORM_QUAD4,4,5,8,7]
+        cI = [0, 7,12,17]
+        mm.setConnectivity(DataArrayInt(c),DataArrayInt(cI))
+        mm.checkConsistencyLight()
+        
+        mm.colinearizeKeepingConform2D(eps)
+        c = mm.getNodalConnectivity().getValues()
+        cI = mm.getNodalConnectivityIndex().getValues()
+        self.assertEqual(c, [NORM_POLYGON, 0, 1, 4, 7, 6, NORM_POLYGON, 1, 2, 5, 4, NORM_POLYGON, 4, 5, 8, 7])
+        self.assertEqual(cI, [0,6,11,16])
+        pass
+
     def testSwig2BoundingBoxForBBTree1(self):
         """ This test appears simple but it checks that bounding box are correctly computed for quadratic polygons. It can help a lot to reduce the amount of intersections !
         """
@@ -2239,9 +2148,9 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         pass
 
     def testSwig2Colinearize2D3(self):
-        """ colinearize was too agressive, potentially producing cells with one edge """
+        """ colinearize was too aggressive, potentially producing cells with one edge """
         # Flat polygon  with 3 edges - nothing should happen (min number of edges for a linear polyg)
-        coo = DataArrayDouble([0.0,0.0,  2.0,0.0,   1.5,0.0,  1.0,0.0,  0.5,0.0], 5,2)   
+        coo = DataArrayDouble([0.0,0.0,  2.0,0.0,   1.5,0.0,  1.0,0.0,  0.5,0.0], 5,2)
         m = MEDCouplingUMesh("m", 2)
         c, cI = [DataArrayInt(l) for l in [[NORM_POLYGON, 0,1,2], [0,4]] ]
         m.setCoords(coo); m.setConnectivity(c, cI)
@@ -2249,8 +2158,8 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m.checkConsistency()
         self.assertEqual(c.getValues(), m.getNodalConnectivity().getValues())
         self.assertEqual(cI.getValues(), m.getNodalConnectivityIndex().getValues())
-        
-        # Flat quad polygon, 2 edges - nothing should happen (min number of edges for a quad polyg) 
+
+        # Flat quad polygon, 2 edges - nothing should happen (min number of edges for a quad polyg)
         m = MEDCouplingUMesh("m", 2)
         c, cI = [DataArrayInt(l) for l in [[NORM_QPOLYG, 0,1,  2,3], [0,5]] ]
         m.setCoords(coo); m.setConnectivity(c, cI)
@@ -2258,7 +2167,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m.checkConsistency()
         self.assertEqual(c.getValues(), m.getNodalConnectivity().getValues())
         self.assertEqual(cI.getValues(), m.getNodalConnectivityIndex().getValues())
-        
+
         # Flat polygon, 4 edges - one reduction should happen
         m = MEDCouplingUMesh("m", 2)
         c, cI = [DataArrayInt(l) for l in [[NORM_POLYGON, 0,1,2,3], [0,5]] ]
@@ -2267,8 +2176,8 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m.checkConsistency()
         self.assertEqual([NORM_POLYGON, 3,1,2], m.getNodalConnectivity().getValues())
         self.assertEqual([0,4], m.getNodalConnectivityIndex().getValues())
-                
-        # Flat quad polygon, 3 edges - one reduction expected 
+
+        # Flat quad polygon, 3 edges - one reduction expected
         m = MEDCouplingUMesh("m", 2)
         c, cI = [DataArrayInt(l) for l in [[NORM_QPOLYG, 0,1,3,  3,2,4], [0,7]] ]
         m.setCoords(coo); m.setConnectivity(c, cI)
@@ -2277,7 +2186,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertEqual([NORM_QPOLYG, 3,1, 5,2], m.getNodalConnectivity().getValues())
         self.assertTrue( m.getCoords()[5].isEqual( DataArrayDouble([(1.5,0.0)]), 1.0e-12 ) )
         self.assertEqual([0,5], m.getNodalConnectivityIndex().getValues())
-        
+
         # Now an actual (neutronic) case: circle made of 4 SEG3. Should be reduced to 2 SEG3
         m = MEDCouplingDataForTest.buildCircle2(0.0, 0.0, 1.0)
         c, cI = [DataArrayInt(l) for l in [[NORM_QPOLYG, 7,5,3,1,  6,4,2,0], [0,9]] ]
@@ -2287,6 +2196,23 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertTrue( m.getCoords()[8].isEqual( DataArrayDouble([(1.0,0.0)]), 1.0e-12 ) )
         self.assertEqual([0,5], m.getNodalConnectivityIndex().getValues())
 
+    def testSwig2Colinearize2D4(self):
+        """ From ALAMOS. Colinearize around last seg in the connectivity was buggy. """
+        mesh = MEDCouplingUMesh('C3', 2)
+        coo = DataArrayDouble([(-31.838400909874,21.557335816426),(-34.588400909874,16.794196095611),(-33.298676775512,19.225000000000),(-33.547226066398,19.368500000000),(-32.750140188627,22.083728734445),(-35.500140188627,17.320589013630),
+                               (-35.044270549250,17.057392554621),(-32.619779010901,22.008464673393),(-32.554667298175,21.970872408523),(-32.745177043525,22.080863261284),(-32.747658616076,22.082295997864),(-32.682478027213,22.044663967338)])
+        mesh.setCoords(coo)
+        c = DataArrayInt([32, 0, 1, 5, 4, 9, 7, 2, 6, 3, 10, 11, 8])
+        cI = DataArrayInt([0, 13])
+        mesh.setConnectivity(c, cI)
+        mesh.colinearize2D(1.0e-8)
+        coo = mesh.getCoords()
+        self.assertEqual(coo.getNumberOfTuples(), 13)
+        lstPt = coo[12]
+        self.assertAlmostEqual(lstPt[0,0], -32.29427054925)
+        self.assertAlmostEqual(lstPt[0,1], 21.8205322754351)
+        pass
+
     def testSwig2CheckAndPreparePermutation2(self):
         a=DataArrayInt([10003,9999999,5,67])
         self.assertTrue(DataArrayInt.CheckAndPreparePermutation(a).isEqual(DataArrayInt([2,3,0,1])))
@@ -2320,34 +2246,34 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
     def testSwigBugOnUnpackingTuplesInDataArray1(self):
         inp=DataArrayDouble([(1,2,3),(4,5,6),(7,8,9),(10,11,12)])
         it=inp.__iter__()
-        r=it.next()
+        r = next(it)
         self.assertRaises(StopIteration,r.__getitem__,4)
         self.assertEqual(len(r),3)
         a,b,c=r
-        r=it.next()
+        r = next(it)
         self.assertEqual(len(r),3)
         d,e,f=r
-        r=it.next()
+        r = next(it)
         self.assertEqual(len(r),3)
         g,h,i=r
-        r=it.next()
+        r = next(it)
         self.assertEqual(len(r),3)
         j,k,l=r
         self.assertTrue(inp.isEqual(DataArrayDouble([a,b,c,d,e,f,g,h,i,j,k,l],4,3),1e-12))
         ########
         inp=DataArrayInt([(1,2,3),(4,5,6),(7,8,9),(10,11,12)])
         it=inp.__iter__()
-        r=it.next()
+        r = next(it)
         self.assertRaises(StopIteration,r.__getitem__,4)
         self.assertEqual(len(r),3)
         a,b,c=r
-        r=it.next()
+        r = next(it)
         self.assertEqual(len(r),3)
         d,e,f=r
-        r=it.next()
+        r = next(it)
         self.assertEqual(len(r),3)
         g,h,i=r
-        r=it.next()
+        r = next(it)
         self.assertEqual(len(r),3)
         j,k,l=r
         self.assertTrue(inp.isEqual(DataArrayInt([a,b,c,d,e,f,g,h,i,j,k,l],4,3)))
@@ -2500,7 +2426,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertEqual(d.getValuesAsTuple(),[])
         d=DataArrayDouble(24) ; d.iota() ; d.rearrange(3)
         self.assertEqual(d.getValues(),[0.,1.,2.,3.,4.,5.,6.,7.,8.,9.,10.,11.,12.,13.,14.,15.,16.,17.,18.,19.,20.,21.,22.,23.])
-        self.assertEqual(d.getValuesAsTuple(),[(0.,1.,2.0),(3.,4.,5.0),(6.,7.,8.0),(9.,10.,11.0),(12.,13.,14.0),(15.,16.,17.0),(18.,19.,20.0),(21.,22.,23.)]) 
+        self.assertEqual(d.getValuesAsTuple(),[(0.,1.,2.0),(3.,4.,5.0),(6.,7.,8.0),(9.,10.,11.0),(12.,13.,14.0),(15.,16.,17.0),(18.,19.,20.0),(21.,22.,23.)])
         d=DataArrayInt()
         self.assertEqual(d.getValues(),[])
         self.assertEqual(d.getValuesAsTuple(),[])
@@ -2783,11 +2709,11 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertTrue(isinstance(g0[0],MEDCouplingCartesianAMRPatchGF))
         g1=amr.retrieveGridsAt(1)
         self.assertEqual(5,len(g1))
-        for i in xrange(5):
+        for i in range(5):
             self.assertTrue(isinstance(g1[i],MEDCouplingCartesianAMRPatch))
             pass
         pass
-    
+
     def testSwig2AMR7(self):
         """Idem testSwig2AMR6 except that we are in 1D"""
         amr=MEDCouplingCartesianAMRMesh("",1,[6],[0],[1])
@@ -3035,7 +2961,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         exp11=DataArrayDouble([61.03,61.03,62.03,62.03,62.03,63.03,63.03,63.03,64.03,64.03,64.03,65.03,65.03,61.03,61.03,62.03,62.03,62.03,63.03,63.03,63.03,64.03,64.03,64.03,65.03,65.03,75.03,75.03,76.03,76.03,76.03,77.03,77.03,77.03,78.03,78.03,78.03,79.03,79.03,75.03,75.03,76.03,76.03,76.03,77.03,77.03,77.03,78.03,78.03,78.03,79.03,79.03,75.03,75.03,76.03,76.03,76.03,77.03,77.03,77.03,78.03,78.03,78.03,79.03,79.03,89.03,89.03,90.03,90.03,90.03,91.03,91.03,91.03,92.03,92.03,92.03,93.03,93.03,89.03,89.03,90.03,90.03,90.03,91.03,91.03,91.03,92.03,92.03,92.03,93.03,93.03,89.03,89.03,90.03,90.03,90.03,91.03,91.03,91.03,92.03,92.03,92.03,93.03,93.03,103.03,103.03,104.03,104.03,104.03,105.03,105.03,105.03,106.03,106.03,106.03,107.03,107.03,103.03,103.03,104.03,104.03,104.03,105.03,105.03,105.03,106.03,106.03,106.03,107.03,107.03,103.03,103.03,104.03,104.03,104.03,105.03,105.03,105.03,106.03,106.03,106.03,107.03,107.03,117.03,117.03,118.03,118.03,118.03,119.03,119.03,119.03,120.03,120.03,120.03,121.03,121.03,117.03,117.03,118.03,118.03,118.03,119.03,119.03,119.03,120.03,120.03,120.03,121.03,121.03])
         self.assertTrue(att3.getFieldOn(att3.getMyGodFather().getMeshAtPosition((1,3)),"YY").isEqualWithoutConsideringStr(exp11,1e-12))
         del att3
-        ### 
+        ###
         att4.synchronizeAllGhostZonesAtASpecifiedLevel(2)
         for pos in [(),(0,),(1,),(2,)]:
             self.assertTrue(att4.getFieldOn(att4.getMyGodFather().getMeshAtPosition(pos),"YY").isEqual(att5.getFieldOn(att5.getMyGodFather().getMeshAtPosition(pos),"YY"),1e-12))
@@ -3173,7 +3099,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
             self.assertTrue(att.getFieldOn(amr[1].getMesh(),"YY").isEqualWithoutConsideringStr(exp1,1e-12))
             pass
         pass
-    
+
     def testSwig2AMR14(self):
         """ non regression linked to VTHB write."""
         fact=[2,2] ; fact2=[3,3]
@@ -3195,431 +3121,6 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertEqual(amr[1][0].getBLTRRangeRelativeToGF(),[(9,15),(21,24)])
         pass
 
-    def testSwig2Intersect2DMeshWith1DLine1(self):
-        """A basic test with no colinearity between m1 and m2."""
-        i=MEDCouplingIMesh("mesh",2,[5,5],[0.,0.],[1.,1.])
-        m1=i.buildUnstructured()
-        m2=MEDCouplingUMesh("mesh",1) ; m2.setCoords(DataArrayDouble([0.75,3.5,3.75,1.75],2,2)) ; m2.allocateCells() ; m2.insertNextCell(NORM_SEG2,[0,1])
-        a,b,c,d=MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1,m2,1e-12)
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([4,1,0,5,6,4,2,1,6,7,4,3,2,7,8,4,4,3,8,9,4,6,5,10,11,4,7,6,11,12,4,8,7,12,13,4,11,10,15,16,4,18,17,22,23,4,19,18,23,24,5,16,15,20,21,31,5,21,22,17,28,31,5,16,31,28,5,17,29,28,5,12,11,16,28,29,5,17,18,30,29,5,13,12,29,30,5,18,19,14,27,30,5,13,30,27,5,9,8,13,27,14])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,25,31,1,31,28,1,28,29,1,29,30,1,30,27,1,27,26])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,45,50,56,62,66,70,76,81,86,92,96,102])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6,9,12,15,18])))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:25].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[25:25+2].isEqualWithoutConsideringStr(m2.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[27:].isEqualWithoutConsideringStr(DataArrayDouble([(3.3214285714285716,2.),(1.6071428571428572,3.),(2.,2.7708333333333335),(3.,2.1875),(1.,3.354166666666667)]),1e-12))
-        self.assertTrue(c.isEqual(DataArrayInt([0,1,2,3,4,5,6,8,14,15,12,13,13,9,9,10,10,11,11,7])))
-        self.assertTrue(d.isEqual(DataArrayInt([(10,10),(11,12),(13,14),(15,16),(17,18),(19,19)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine2(self):
-        """A basic test with colinearity between m1 and m2 and the last cell of m2 outside m1."""
-        i=MEDCouplingIMesh("mesh",2,[5,5],[0.,0.],[1.,1.])
-        m1=i.buildUnstructured()
-        m2=MEDCouplingUMesh("mesh",1) ; m2.setCoords(DataArrayDouble([0.5,2.,2.25,2.,2.5,2.,2.75,2.,3.,2.,4.,2.,5.,2.],7,2)) ; m2.allocateCells()
-        for i in xrange(6):
-            m2.insertNextCell(NORM_SEG2,[i,i+1])
-            pass
-        a,b,c,d=MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1,m2,1e-12)
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([4,1,0,5,6,4,2,1,6,7,4,3,2,7,8,4,4,3,8,9,4,16,15,20,21,4,17,16,21,22,4,18,17,22,23,4,19,18,23,24,5,6,5,10,25,11,5,7,6,11,12,5,8,7,12,26,27,28,13,5,9,8,13,14,5,11,25,10,15,16,5,12,11,16,17,5,13,28,27,26,12,17,18,5,14,13,18,19])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,46,51,59,64,70,75,83,88])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,25,11,1,11,12,1,12,26,1,26,27,1,27,28,1,28,13,1,13,14,1,14,31])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6,9,12,15,18,21,24])))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:25].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[25:].isEqualWithoutConsideringStr(m2.getCoords(),1e-12))
-        self.assertTrue(c.isEqual(DataArrayInt([0,1,2,3,12,13,14,15,4,5,6,7,8,9,10,11])))
-        self.assertTrue(d.isEqual(DataArrayInt([(12,8),(13,9),(14,10),(14,10),(14,10),(14,10),(15,11),(-1,-1)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine3(self):
-        """m2 fully included in cell #12. of m1"""
-        i=MEDCouplingIMesh("mesh",2,[5,5],[0.,0.],[1.,1.])
-        m1=i.buildUnstructured()
-        m2=MEDCouplingUMesh("mesh",1) ; m2.setCoords(DataArrayDouble([(0.75,3.25),(0.5,3.5),(0.25,3.25)])) ; m2.allocateCells()
-        for i in xrange(2):
-            m2.insertNextCell(NORM_SEG2,[i,i+1])
-            pass
-        a,b,c,d=MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1,m2,1e-12)
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([4,1,0,5,6,4,2,1,6,7,4,3,2,7,8,4,4,3,8,9,4,6,5,10,11,4,7,6,11,12,4,8,7,12,13,4,9,8,13,14,4,11,10,15,16,4,12,11,16,17,4,13,12,17,18,4,14,13,18,19,4,17,16,21,22,4,18,17,22,23,4,19,18,23,24,5,16,15,20,21])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,25,26,1,26,27])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6])))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:25].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[25:].isEqualWithoutConsideringStr(m2.getCoords(),1e-12))
-        self.assertTrue(c.isEqual(DataArrayInt([0,1,2,3,4,5,6,7,8,9,10,11,13,14,15,12])))
-        self.assertTrue(d.isEqual(DataArrayInt([(15,15),(15,15)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine4(self):
-        """A special case where an edge is simultaneously a cut and colinear. This tests also checks negative values in descending edges of m1."""
-        i=MEDCouplingIMesh("mesh",2,[5,5],[0.,0.],[1.,1.])
-        m1=i.buildUnstructured()
-        part=DataArrayInt([0,1,2,3,4,7,8,11,12,13,14,15])
-        m1_1=m1[part]
-        m1_2=m1[part.buildComplement(m1.getNumberOfCells())]
-        m1=MEDCouplingUMesh.MergeUMeshesOnSameCoords(m1_1,m1_2.buildSpreadZonesWithPoly())
-        m1.zipCoords()
-        m2=MEDCouplingUMesh("mesh",1) ; m2.setCoords(DataArrayDouble([(3.5,2.),(0.5,2.)])) ; m2.allocateCells()
-        m2.insertNextCell(NORM_SEG2,[0,1])
-        a,b,c,d=MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1,m2,1e-12)
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([4,1,0,5,6,4,2,1,6,7,4,3,2,7,8,4,4,3,8,9,4,15,14,19,20,4,16,15,20,21,4,17,16,21,22,4,18,17,22,23,5,6,5,10,25,11,5,9,8,12,24,13,5,11,25,10,14,15,5,13,24,12,17,18,5,8,7,6,11,12,5,15,16,17,12,11])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,46,52,58,64,70,76])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,24,12,1,12,11,1,11,25])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6,9])))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:24].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[24:].isEqualWithoutConsideringStr(m2.getCoords(),1e-12))
-        self.assertTrue(c.isEqual(DataArrayInt([0,1,2,3,8,9,10,11,4,5,6,7,12,12])))
-        self.assertTrue(d.isEqual(DataArrayInt([(9,11),(12,13),(8,10)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine5(self):
-        """A test focusing on a special case for cut."""
-        i=MEDCouplingIMesh("mesh",2,[5,5],[0.,0.],[1.,1.])
-        m1=i.buildUnstructured()
-        m2=MEDCouplingUMesh("mesh",1) ; m2.setCoords(DataArrayDouble([(1.,0.),(3.,2.),(1.,4.)])) ; m2.allocateCells()
-        for i in xrange(2):
-            m2.insertNextCell(NORM_SEG2,[i,i+1])
-            pass
-        a,b,c,d=MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1,m2,1e-12)
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([4,1,0,5,6,4,3,2,7,8,4,4,3,8,9,4,6,5,10,11,4,7,6,11,12,4,9,8,13,14,4,11,10,15,16,4,12,11,16,17,4,14,13,18,19,4,16,15,20,21,4,18,17,22,23,4,19,18,23,24,5,6,7,1,5,2,1,7,5,12,13,7,5,8,7,13,5,12,17,13,5,18,13,17,5,16,21,17,5,22,17,21])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,45,50,55,60,64,68,72,76,80,84,88,92])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,1,7,1,7,13,1,13,17,1,17,21])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6,9,12])))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:25].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[25:].isEqualWithoutConsideringStr(m2.getCoords(),1e-12))
-        self.assertTrue(c.isEqual(DataArrayInt([0,2,3,4,5,7,8,9,11,12,14,15,1,1,6,6,10,10,13,13])))
-        self.assertTrue(d.isEqual(DataArrayInt([(12,13),(14,15),(16,17),(18,19)])))
-        pass
-
-    def testIntersect2DMeshWith1DLine6(self):
-        """ Basic test for Intersect2DMeshWith1DLine: a vertical line intersecting a square. """
-        m1c = MEDCouplingCMesh()
-        coordX = DataArrayDouble([-1., 1., 2])
-        m1c.setCoordsAt(0,coordX)
-        coordY = DataArrayDouble([0., 2.])
-        m1c.setCoordsAt(1,coordY);
-        m1 = m1c.buildUnstructured()
-
-        # A simple line:
-        m2 = MEDCouplingUMesh("bla", 1)
-        coord2 = DataArrayDouble([0.,-1.0,  0.,1.,  0.,3.,  0.5,2.2], 4, 2)
-        conn2 = DataArrayInt([NORM_SEG2,0,1,NORM_SEG3,1,2,3])
-        connI2 = DataArrayInt([0,3,7])
-        m2.setCoords(coord2)
-        m2.setConnectivity(conn2, connI2)
-
-        # End of construction of input meshes m1bis and m2 -> start of specific part of the test
-        a,b,c,d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1, m2, 1e-10)        
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([4,2,1,4,5,32,0,3,11,7,10,14,15,16,17,18,32,4,1,10,7,11,19,20,21,22,23])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,16,27])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,6,10,1,10,7,2,7,11,12,2,11,8,13])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6,10,14])))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:6].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[6:10].isEqual(m2.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[10:].isEqual(DataArrayDouble([(0.,0.),(0.5164175471673584,2.),(0.3796918047064557,1.43726403104512),(0.3796918047064557,2.56273596895488),(-1.,1.),(-0.24179122641632078,2.),(0.3796918047064558,1.4372640310451201),(0.,0.5),(-0.5,0.),(1.,1.),(0.5,0.),(0.,0.5),(0.3796918047064558,1.4372640310451201),(0.7582087735836792,2.)]),1e-12))
-        self.assertTrue(c.isEqual(DataArrayInt([1,0,0])))
-        self.assertTrue(d.isEqual(DataArrayInt([(-1,-1),(1,2),(1,2),(-1,-1)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine7(self):
-        """ Star pattern (a triangle intersecting another one upside down) """
-        coords1 = DataArrayDouble([-2.,1.,   2.,1.,  0.,-2.], 3,2)
-        coords2 = DataArrayDouble([0.,2.,   2.,-1.,  -2.,-1.,  0.,3.], 4,2)
-        m1 = MEDCouplingUMesh("triangle", 2)
-        m2 = MEDCouplingUMesh("tri_line", 1)
-        m1.setCoords(coords1)
-        m2.setCoords(coords2)
-        m1.setConnectivity(DataArrayInt([NORM_TRI3, 0,1,2]), DataArrayInt([0,4]))
-        m2.setConnectivity(DataArrayInt([NORM_SEG2,0,1,NORM_SEG2,1,2,NORM_SEG2,2,3]), DataArrayInt([0,3,6,9]))
-    # End of construction of input meshes m1bis and m2 -> start of specific part of the test
-        a,b,c,d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1, m2, 1e-10)
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([5,1,9,7,5,2,11,10,5,0,8,12,5,7,9,10,11,12,8])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,4,8,12,19])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,3,7,1,7,9,1,9,4,1,4,10,1,10,11,1,11,5,1,5,12,1,12,8,1,8,6])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6,9,12,15,18,21,24,27])))
-        self.assertTrue(a.getCoords()[:3].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[3:7].isEqual(m2.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[7:].isEqual(DataArrayDouble([(0.6666666666666666,1.),(-1.,1.),(1.3333333333333333,1.1102230246251565e-16),(0.6666666666666665,-0.9999999999999996),(-0.6666666666666667,-1.),(-1.4285714285714284,0.14285714285714302)]),1e-12))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(c.isEqual(DataArrayInt([0,0,0,0])))
-        self.assertTrue(d.isEqual(DataArrayInt([(-1,-1),(0,3),(-1,-1),(-1,-1),(1,3),(-1,-1),(-1,-1),(2,3),(-1,-1)])))
-        pass
-    
-    def testSwig2Intersect2DMeshWith1DLine8(self):
-        """ Line pieces ending (or fully located) in the middle of a cell """
-        m1c = MEDCouplingCMesh()
-        m1c.setCoordsAt(0,DataArrayDouble([-1., 1.]))
-        m1c.setCoordsAt(1,DataArrayDouble([-1., 1.]));
-        m1 = m1c.buildUnstructured()
-        coords2 = DataArrayDouble([0.,0.,  0.,1.5, -1.5,0.,  0.5,0.0,  0.0,-0.5, 1.1,-0.6], 6,2)
-        m2 = MEDCouplingUMesh("piecewise_line", 1)
-        m2.setCoords(coords2)
-        c = DataArrayInt([NORM_SEG2,2,1, NORM_SEG2,1,4, NORM_SEG2,4,3,  NORM_SEG2,3,5])
-        cI = DataArrayInt([0,3,6,9,12])
-        m2.setConnectivity(c, cI)
-        a,b,c,d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1, m2, 1e-10)
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([5,2,11,10,5,3,13,7,8,12,5,1,0,10,11,12,8,7,13])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,4,10,19])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,6,10,1,10,11,1,11,5,1,5,12,1,12,8,1,8,7,1,7,13,1,13,9])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6,9,12,15,18,21,24])))
-        self.assertTrue(a.getCoords()[:4].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[4:10].isEqual(m2.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[10:].isEqual(DataArrayDouble([(-1.,0.5),(-0.5,1.),(0.,1.),(1.,-0.5)]),1e-12))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(c.isEqual(DataArrayInt([0,0,0])))
-        self.assertTrue(d.isEqual(DataArrayInt([(-1,-1),(0,2),(-1,-1),(-1,-1),(1,2),(1,2),(1,2),(-1,-1)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine9(self):
-        """ Intersection with a line whose connectivity is not consecutive """
-        m1c = MEDCouplingCMesh()
-        coordX = DataArrayDouble([-1., 1., 2])
-        m1c.setCoordsAt(0,coordX)
-        coordY = DataArrayDouble([0., 2.])
-        m1c.setCoordsAt(1,coordY);
-        m1 = m1c.buildUnstructured()
-        # A simple line:
-        m2 = MEDCouplingUMesh("bla", 1)
-        coord2 = DataArrayDouble([0.,1.5,  0.5,1.,  0.0,0.5,  0.0,3.0,  0.0,-1.0], 5, 2)
-        conn2 = DataArrayInt([NORM_SEG2,3,0,NORM_SEG3,0,2,1,NORM_SEG2,2,4])
-        connI2 = DataArrayInt([0,3,7,10])
-        m2.setCoords(coord2)
-        m2.setConnectivity(conn2, connI2)
-        # End of construction of input meshes m1bis and m2 -> start of specific part of the test
-        a,b,c,d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m1, m2, 1e-10)
-        self.assertTrue(a.getNodalConnectivity().isEqual(DataArrayInt([4,2,1,4,5,32,4,1,11,8,6,12,14,15,16,17,18,19,32,0,3,12,6,8,11,20,21,22,23,24,25])))
-        self.assertTrue(a.getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,18,31])))
-        self.assertTrue(b.getNodalConnectivity().isEqual(DataArrayInt([1,9,12,1,12,6,2,6,8,13,1,8,11,1,11,10])))
-        self.assertTrue(b.getNodalConnectivityIndex().isEqual(DataArrayInt([0,3,6,10,13,16])))
-        self.assertTrue(a.getCoords()[:6].isEqual(m1.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[6:11].isEqual(m2.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[11:].isEqual(DataArrayDouble([(0.,0.),(0.,2.),(0.5,1.),(1.,1.),(0.5,0.),(0.,0.25),(0.5,1.),(0.,1.75),(0.5,2.),(-1.,1.),(-0.5,2.),(0.,1.75),(0.5,1.),(0.,0.25),(-0.5,0.)]),1e-12))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(c.isEqual(DataArrayInt([1,0,0])))
-        self.assertTrue(d.isEqual(DataArrayInt([(-1,-1),(1,2),(1,2),(1,2),(-1,-1)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine10(self):
-        """ Intersection between a circle and various lines """
-        eps = 1.0e-8
-        m_circ = MEDCouplingDataForTest.buildCircle2(0.0, 0.0, 2.0)
-        coords = [0.0,3.0,0.0,-3.0]
-        connec = [0,1]
-        m_line = MEDCouplingUMesh("seg", 1)  
-        m_line.allocateCells(1)
-        meshCoords = DataArrayDouble.New(coords, len(coords)/2, 2)
-        m_line.setCoords(meshCoords)
-        m_line.insertNextCell(NORM_SEG2, connec)
-        a, b, c, d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m_circ, m_line, eps)
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:m_circ.getNumberOfNodes()].isEqual(m_circ.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[m_circ.getNumberOfNodes():m_circ.getNumberOfNodes()+m_line.getNumberOfNodes()].isEqual(m_line.getCoords(),1e-12))
-        self.assertTrue(a.getCoords().isEqual(DataArrayDouble([(2.,0.),(1.4142135623730951,1.414213562373095),(0.,2.),(-1.414213562373095,1.4142135623730951),(-2.,0.),(-1.4142135623730954,-1.414213562373095),(0.,-2.),(1.4142135623730947,-1.4142135623730954),(0.,3.),(0.,-3.),(0.,-2.),(0.,2.),(2.,0.),(0.7653668647301797,-1.8477590650225735),(0.,0.),(0.7653668647301797,1.8477590650225735),(-2,0.),(-0.7653668647301795,1.8477590650225735),(0.,0.),(-0.7653668647301795,-1.8477590650225735)]),1e-12))
-        self.assertEqual([32,1,7,10,11,12,13,14,15,32,5,3,11,10,16,17,18,19],a.getNodalConnectivity().getValues())
-        self.assertEqual([0,9,18],  a.getNodalConnectivityIndex().getValues())
-        self.assertEqual([1,8,11,1,11,10,1,10,9],b.getNodalConnectivity().getValues())
-        self.assertEqual([0,3,6,9],b.getNodalConnectivityIndex().getValues())
-        self.assertTrue(a.getCoords()[:8].isEqual(m_circ.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[8:10].isEqual(m_line.getCoords(),1e-12))
-        coo_tgt = DataArrayDouble([2.,0.,1.4142135623730951,1.414213562373095,1.2246467991473532e-16,2.,-1.414213562373095,1.4142135623730951,-2.,0.,-1.4142135623730954,-1.414213562373095,-3.6739403974420594e-16,-2.,1.4142135623730947,-1.4142135623730954,0.,3.,0.,-3.,0.,-2.,0.,2.,2.,0.,0.7653668647301797,-1.8477590650225735,0.,0.,0.7653668647301797,1.8477590650225735,-2.,0.,-0.7653668647301795,1.8477590650225735,0.,0.,-0.7653668647301795,-1.8477590650225735])
-        self.assertTrue(a.getCoords().isEqualWithoutConsideringStr(coo_tgt,1.0e-12))
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertEqual([0,0],c.getValues())
-        self.assertEqual([-1,-1,0,1,-1,-1],d.getValues())
-
-    def testSwig2Intersect2DMeshWith1DLine11(self):
-        """ Quad line re-entering a square cell """
-        eps = 1.0e-8
-        m = MEDCouplingUMesh("box", 2)
-        m.setCoords(DataArrayDouble([-1., -1., -1., 1., 1., 1., 1., -1.0],4,2))
-        c, cI = [NORM_POLYGON, 0, 1, 2, 3], [0, 5]
-        m.setConnectivity(DataArrayInt(c), DataArrayInt(cI))
-        m.checkConsistencyLight()
-        coords2 = [0., 1.3, -1.3, 0., -0.6, 0.6, 0., -1.3, -0.5, -0.5]
-        connec2, cI2 = [NORM_SEG3, 0, 1, 2, NORM_SEG3, 1, 3, 4], [0,4,8]
-        m_line = MEDCouplingUMesh("seg", 1)  
-        m_line.setCoords(DataArrayDouble(coords2, len(coords2)/2, 2))
-        m_line.setConnectivity(DataArrayInt(connec2), DataArrayInt(cI2))
-        a, b, c, d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m, m_line, eps)
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:m.getNumberOfNodes()].isEqual(m.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[m.getNumberOfNodes():m.getNumberOfNodes()+m_line.getNumberOfNodes()].isEqual(m_line.getCoords(),1e-12))
-        self.assertTrue(a.getCoords().isEqual(DataArrayDouble([(-1.,-1.),(-1.,1.),(1.,1.),(1.,-1.),(0.,1.3),(-1.3,0.),(-0.6,0.6),(0.,-1.3),(-0.5,-0.5),(-1.,0.23453685964236054),(-1.,-0.13033276368660177),(-0.2345368596423598,1.),(-0.1303327636866019,-1.),(-0.11489196370692323,1.1481421036683868),(-0.6,0.6),(-1.1481421036683859,0.11489196370692323),(-1.147455889106615,-0.0593103465193594),(-0.5,-0.5),(-0.0593103465193594,-1.147455889106615),(1.,0.),(0.4348336181566991,-1.),(-0.5651663818433009,-1.),(-1.,-0.5651663818433009),(-1.,0.05210204797787939),(-0.6,0.6),(0.3827315701788201,1.),(-0.6172684298211799,1.),(-0.6,0.6),(-1.,0.6172684298211802),(-0.6,0.6),(0.3827315701788201,1.),(1.,0.),(0.4348336181566991,-1.),(-0.5,-0.5),(-1.,0.05210204797787939),(-1.,-0.5651663818433009),(-0.5,-0.5),(-0.5651663818433009,-1.)]),1e-12))
-        self.assertEqual([32,9,11,2,3,12,10,29,30,31,32,33,34,32,0,10,12,35,36,37,32,1,11,9,26,27,28],a.getNodalConnectivity().getValues())
-        self.assertEqual([0,13,20,27],a.getNodalConnectivityIndex().getValues())
-        self.assertEqual([2,4,11,13,2,11,9,14,2,9,5,15,2,5,10,16,2,10,12,17,2,12,7,18],b.getNodalConnectivity().getValues())
-        self.assertEqual([0,4,8,12,16,20,24],b.getNodalConnectivityIndex().getValues())
-        self.assertTrue(a.getCoords()[:4].isEqual(m.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[4:9].isEqual(m_line.getCoords(),1e-12))
-        self.assertTrue(DataArrayInt([0,0,0]).isEqual(c))
-        self.assertTrue(DataArrayInt([(-1,-1),(0,2),(-1,-1),(-1,-1),(0,1),(-1,-1)]).isEqual(d))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine12(self):
-        """ Two squares one in the other intersected by an horizontal line """
-        eps = 1.0e-8
-        m = MEDCouplingUMesh("boxbox", 2)
-        m.setCoords(DataArrayDouble([-0.5,-0.5,-0.5,0.5,0.5,0.5,0.5,-0.5,-0.25,-0.25,-0.25,0.25,0.25,0.25,0.25,-0.25],8,2))
-        c = [NORM_POLYGON, 4, 5, 6, 7, NORM_POLYGON, 0, 1, 5, 4, NORM_POLYGON, 1, 2, 3, 0, 4, 7, 6, 5]
-        cI = [0, 5, 10, 19]
-        m.setConnectivity(DataArrayInt(c), DataArrayInt(cI))
-        m.checkConsistencyLight()
-        coords2 = [-1., 0.25, 1., 0.25]
-        connec2, cI2 = [NORM_SEG2, 0, 1], [0,3]
-        m_line = MEDCouplingUMesh.New("seg", 1)  
-        m_line.setCoords(DataArrayDouble(coords2, len(coords2)/2, 2))
-        m_line.setConnectivity(DataArrayInt(connec2), DataArrayInt(cI2))
-        m_line2 = m_line.deepCopy()
-        m2 = m.deepCopy()
-        a, b, c, d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m, m_line, eps)
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:m.getNumberOfNodes()].isEqual(m.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[m.getNumberOfNodes():m.getNumberOfNodes()+m_line.getNumberOfNodes()].isEqual(m_line.getCoords(),1e-12))
-        self.assertTrue(a.getCoords().isEqual(DataArrayDouble([(-0.5,-0.5),(-0.5,0.5),(0.5,0.5),(0.5,-0.5),(-0.25,-0.25),(-0.25,0.25),(0.25,0.25),(0.25,-0.25),(-1.,0.25),(1.,0.25),(-0.5,0.25),(0.5,0.25)]),1e-12))
-        self.assertEqual([5,4,5,6,7,5,1,5,10,5,4,0,10,5,5,5,1,2,11,6,5,3,0,4,7,6,11],a.getNodalConnectivity().getValues())
-        self.assertEqual([0,5,9,14,20,27],a.getNodalConnectivityIndex().getValues())
-        self.assertEqual([1,8,10,1,10,5,1,5,6,1,6,11,1,11,9],b.getNodalConnectivity().getValues())
-        self.assertEqual([0,3,6,9,12,15],b.getNodalConnectivityIndex().getValues())
-        self.assertTrue(c.isEqual(DataArrayInt([0,1,1,2,2])))
-        self.assertTrue(d.isEqual(DataArrayInt([(-1,-1),(1,2),(3,0),(3,4),(-1,-1)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine13(self):
-        """ A square (side length) in a circle intersected by a simple horizontal line """
-        import math
-        eps = 1.0e-8
-        m = MEDCouplingUMesh("boxcircle", 2)
-        sq2 = math.sqrt(2.0)
-        soth = (sq2+1.0)/2.0
-        coo = [2., 0., sq2, sq2, 0., 2., -sq2, sq2, -2., 0., -sq2, -sq2, 0., -2., sq2, -sq2, -1., -1., -1., 1., 1., 
-         1., 1., -1., -1., 0., 0., 1., 1., 0., 0., -1., -soth, soth, soth,soth]
-        coo = DataArrayDouble(coo); coo.rearrange(2) 
-        m.setCoords(coo)
-        c = [NORM_QPOLYG, 8, 9, 10, 11, 12, 13, 14, 15, NORM_QPOLYG, 3, 1, 10, 9, 2, 17, 13, 16, NORM_QPOLYG, 1, 7, 5, 3, 9, 8, 11, 10, 0, 6, 4, 16, 12, 15, 14, 17]
-        cI = [0, 9, 18, 35]
-        m.setConnectivity(DataArrayInt(c), DataArrayInt(cI))
-        m.checkConsistencyLight()
-        coords2 = [-2., 1., 2., 1.0]
-        connec2, cI2 = [NORM_SEG2, 0, 1], [0,3]
-        m_line = MEDCouplingUMesh("seg", 1)  
-        m_line.setCoords(DataArrayDouble(coords2, len(coords2)/2, 2))
-        m_line.setConnectivity(DataArrayInt(connec2), DataArrayInt(cI2))
-        a, b, c, d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m, m_line, eps)
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:m.getNumberOfNodes()].isEqual(m.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[m.getNumberOfNodes():m.getNumberOfNodes()+m_line.getNumberOfNodes()].isEqual(m_line.getCoords(),1e-12))
-        self.assertTrue(a.getCoords().isEqual(DataArrayDouble([(2.,0.),(1.4142135623730951,1.4142135623730951),(0.,2.),(-1.4142135623730951,1.4142135623730951),(-2.,0.),(-1.4142135623730951,-1.4142135623730951),(0.,-2.),(1.4142135623730951,-1.4142135623730951),(-1.,-1.),(-1.,1.),(1.,1.),(1.,-1.),(-1.,0.),(0.,1.),(1.,0.),(0.,-1.),(-1.2071067811865475,1.2071067811865475),(1.2071067811865475,1.2071067811865475),(-2.,1.),(2.,1.),(1.7320508075688772,1.),(-1.7320508075688772,1.),(-1.2071067811865475,1.2071067811865475),(-1.3660254037844386,1.),(-1.58670668058247,1.2175228580174415),(0.,-1.),(1.,0.),(1.2071067811865475,1.2071067811865475),(1.5867066805824703,1.2175228580174413),(1.9828897227476205,-0.26105238444010315),(0.,-2.),(-1.9828897227476205,-0.2610523844401032),(-1.3660254037844386,1.),(-1.,0.),(1.5867066805824703,1.2175228580174413),(1.3660254037844386,1.),(1.2071067811865475,1.2071067811865475),(0.,-2.),(-1.9828897227476205,-0.2610523844401032),(-1.3660254037844386,1.),(-1.,0.),(0.,-1.),(1.,0.),(1.3660254037844386,1.),(1.9828897227476205,-0.26105238444010315)]),1e-12))
-        self.assertEqual([32,8,9,10,11,12,13,14,15,32,3,1,10,9,2,17,13,16,32,3,9,21,22,23,24,32,1,20,10,34,35,36,32,7,5,21,9,8,11,10,20,37,38,39,40,41,42,43,44],a.getNodalConnectivity().getValues())
-        self.assertEqual([0,9,18,25,32,49],a.getNodalConnectivityIndex().getValues())
-        self.assertEqual([1,18,21,1,21,9,1,9,10,1,10,20,1,20,19],b.getNodalConnectivity().getValues())
-        self.assertEqual([0,3,6,9,12,15],b.getNodalConnectivityIndex().getValues())
-        self.assertTrue(c.isEqual(DataArrayInt([0,1,2,2,2])))
-        self.assertTrue(d.isEqual(DataArrayInt([(-1,-1),(2,4),(1,0),(3,4),(-1,-1)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine14(self):
-        """ A circle in a circle intersected by a simple horizontal line, not tangent to the circles """
-        eps = 1.0e-8
-        m = MEDCouplingUMesh("boxcircle", 2)
-        coo = [2.,0.,1.4142135623730951,1.414213562373095,0.,2.,-1.414213562373095,1.4142135623730951,-2.,0.,-1.4142135623730954,-1.414213562373095,0.,-2.,
-               1.4142135623730947,-1.4142135623730954,1.,0.,0.7071067811865476,0.7071067811865475,0.,1.,-0.7071067811865475,0.7071067811865476,-1.,0.,-0.7071067811865477,-0.7071067811865475,
-               0.,-1.,0.7071067811865474,-0.7071067811865477,1.060660171779821,-1.0606601717798214,-1.0606601717798214,-1.0606601717798212]
-        coo = DataArrayDouble(coo); coo.rearrange(2) 
-        m.setCoords(coo)
-        c = [NORM_QPOLYG, 15, 13, 11, 9, 14, 12, 10, 8, NORM_QPOLYG, 7, 5, 13, 15, 6, 17, 14, 16, NORM_QPOLYG, 5, 3, 1, 7, 15, 9, 11, 13, 4, 2, 0, 16, 8, 10, 12, 17]
-        cI = [0, 9, 18, 35] 
-        m.setConnectivity(DataArrayInt(c), DataArrayInt(cI))
-        m.checkConsistencyLight()
-        coords2 = [-2., 0., 2., 0.]
-        connec2, cI2 = [NORM_SEG2, 0, 1], [0,3]
-        m_line = MEDCouplingUMesh.New("seg", 1)  
-        m_line.setCoords(DataArrayDouble(coords2, len(coords2)/2, 2))
-        m_line.setConnectivity(DataArrayInt(connec2), DataArrayInt(cI2))
-        a, b, c, d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m, m_line, eps)
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:m.getNumberOfNodes()].isEqual(m.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[m.getNumberOfNodes():m.getNumberOfNodes()+m_line.getNumberOfNodes()].isEqual(m_line.getCoords(),1e-12))
-        self.assertTrue(a.getCoords().isEqual(DataArrayDouble([(2.,0.),(1.4142135623730951,1.414213562373095),(0.,2.),(-1.414213562373095,1.4142135623730951),(-2.,0.),(-1.4142135623730954,-1.414213562373095),(0.,-2.),(1.4142135623730947,-1.4142135623730954),(1.,0.),(0.7071067811865476,0.7071067811865475),(0.,1.),(-0.7071067811865475,0.7071067811865476),(-1.,0.),(-0.7071067811865477,-0.7071067811865475),(0.,-1.),(0.7071067811865474,-0.7071067811865477),(1.060660171779821,-1.0606601717798214),(-1.0606601717798214,-1.0606601717798212),(-2.,0.),(2.,0.),(-1.,0.),(1.,0.),(0.,2.),(1.8477590650225735,0.7653668647301795),(1.8477590650225735,-0.7653668647301797),(1.060660171779821,-1.0606601717798214),(0.9238795325112867,-0.38268343236508984),(0.9238795325112867,0.3826834323650897),(0.,1.),(-0.9238795325112867,0.3826834323650896),(-1.5,0.),(-1.8477590650225735,0.7653668647301792),(-1.0606601717798214,-1.0606601717798212),(-1.8477590650225733,-0.7653668647301799),(-1.5,0.),(-0.9238795325112866,-0.38268343236508995),(0.,1.),(-0.9238795325112867,0.3826834323650896),(-1.5,0.),(-1.8477590650225735,0.7653668647301792),(0.,2.),(1.8477590650225735,0.7653668647301795),(1.5,0.),(0.9238795325112867,0.3826834323650897),(1.060660171779821,-1.0606601717798214),(0.9238795325112867,-0.38268343236508984),(1.5,0.),(1.8477590650225735,-0.7653668647301797),(0.,1.),(0.9238795325112867,0.3826834323650897),(0.,0.),(-0.9238795325112867,0.3826834323650896),(0.,-1.),(-0.9238795325112866,-0.38268343236508995),(0.,0.),(0.9238795325112867,-0.38268343236508984)]),1e-12))
-        self.assertEqual([32,7,5,13,15,6,17,14,16,32,9,11,20,18,3,1,19,21,36,37,38,39,40,41,42,43,32,7,15,21,19,44,45,46,47,32,13,5,18,20,32,33,34,35,32,11,9,21,20,48,49,50,51,32,15,13,20,21,52,53,54,55],a.getNodalConnectivity().getValues())
-        self.assertEqual([0,9,26,35,44,53,62],a.getNodalConnectivityIndex().getValues())
-        self.assertEqual([1,18,20,1,20,21,1,21,19],b.getNodalConnectivity().getValues())
-        self.assertEqual([0,3,6,9],b.getNodalConnectivityIndex().getValues())
-        self.assertTrue(c.isEqual(DataArrayInt([1,2,2,2,0,0])))
-        self.assertTrue(d.isEqual(DataArrayInt([(1,3),(4,5),(1,2)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine15(self):
-        """ Same as testSwig2Intersect2DMeshWith1DLine13 except that the line is colinear AND splits on of the common edge of 2D mesh."""
-        import math
-        eps = 1.0e-8
-        m = MEDCouplingUMesh("boxcircle", 2)
-        sq2 = math.sqrt(2.0)
-        soth = (sq2+1.0)/2.0
-        coo = [2., 0., sq2, sq2, 0., 2., -sq2, sq2, -2., 0., -sq2, -sq2, 0., -2., sq2, -sq2, -1., -1., -1., 1., 1., 
-         1., 1., -1., -1., 0., 0., 1., 1., 0., 0., -1., -soth, soth, soth,soth]
-        coo = DataArrayDouble(coo); coo.rearrange(2) 
-        m.setCoords(coo)
-        c = [NORM_QPOLYG, 8, 9, 10, 11, 12, 13, 14, 15, NORM_QPOLYG, 3, 1, 10, 9, 2, 17, 13, 16, NORM_QPOLYG, 1, 7, 5, 3, 9, 8, 11, 10, 0, 6, 4, 16, 12, 15, 14, 17]
-        cI = [0, 9, 18, 35]
-        m.setConnectivity(DataArrayInt(c), DataArrayInt(cI))
-        m.checkConsistencyLight()
-        coords2 = [(-2., 1.),(2.,1.),(0.,1)]
-        connec2, cI2 = [NORM_SEG2, 0, 2, NORM_SEG2, 2, 1], [0,3,6]
-        m_line = MEDCouplingUMesh("seg", 1)  
-        m_line.setCoords(DataArrayDouble(coords2))
-        m_line.setConnectivity(DataArrayInt(connec2), DataArrayInt(cI2))
-        a, b, c, d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m, m_line, eps)
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:m.getNumberOfNodes()].isEqual(m.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[m.getNumberOfNodes():m.getNumberOfNodes()+m_line.getNumberOfNodes()].isEqual(m_line.getCoords(),1e-12))
-        self.assertTrue(a.getCoords().isEqual(DataArrayDouble([(2.,0.),(1.4142135623730951,1.4142135623730951),(0.,2.),(-1.4142135623730951,1.4142135623730951),(-2.,0.),(-1.4142135623730951,-1.4142135623730951),(0.,-2.),(1.4142135623730951,-1.4142135623730951),(-1.,-1.),(-1.,1.),(1.,1.),(1.,-1.),(-1.,0.),(0.,1.),(1.,0.),(0.,-1.),(-1.2071067811865475,1.2071067811865475),(1.2071067811865475,1.2071067811865475),(-2.,1.),(2.,1.),(0.,1.),(1.7320508075688776,1.),(-1.7320508075688776,1.),(-0.5,1.),(0.5,1.),(0.5,1.),(-0.5,1.),(-1.2071067811865475,1.2071067811865475),(-1.3660254037844388,1.),(-1.58670668058247,1.2175228580174415),(0.,-1.),(1.,0.),(1.2071067811865475,1.2071067811865475),(1.5867066805824703,1.2175228580174413),(1.9828897227476205,-0.26105238444010315),(0.,-2.),(-1.9828897227476205,-0.2610523844401032),(-1.3660254037844388,1.),(-1.,0.),(1.5867066805824703,1.2175228580174413),(1.3660254037844388,1.),(1.2071067811865475,1.2071067811865475),(0.,-2.),(-1.9828897227476205,-0.2610523844401032),(-1.3660254037844388,1.),(-1.,0.),(0.,-1.),(1.,0.),(1.3660254037844388,1.),(1.9828897227476205,-0.26105238444010315)]),1e-12))
-        self.assertEqual([32,8,9,20,10,11,12,23,24,14,15,32,3,1,10,20,9,2,17,25,26,16,32,3,9,22,27,28,29,32,1,21,10,39,40,41,32,7,5,22,9,8,11,10,21,42,43,44,45,46,47,48,49],a.getNodalConnectivity().getValues())
-        self.assertEqual([0,11,22,29,36,53],a.getNodalConnectivityIndex().getValues())
-        self.assertEqual([1,18,22,1,22,9,1,9,20,1,20,10,1,10,21,1,21,19],b.getNodalConnectivity().getValues())
-        self.assertEqual([0,3,6,9,12,15,18],b.getNodalConnectivityIndex().getValues())
-        self.assertTrue(c.isEqual(DataArrayInt([0,1,2,2,2])))
-        self.assertTrue(d.isEqual(DataArrayInt([(-1,-1),(2,4),(1,0),(1,0),(3,4),(-1,-1)])))
-        pass
-
-    def testSwig2Intersect2DMeshWith1DLine16(self):
-        """ Same than testSwig2Intersect2DMeshWith1DLine13 except it is a vertical line. Non regression test."""
-        import math
-        eps = 1.0e-8
-        m = MEDCouplingUMesh("boxcircle", 2)
-        sq2 = math.sqrt(2.0)
-        soth = (sq2+1.0)/2.0
-        coo = [2., 0., sq2, sq2, 0., 2., -sq2, sq2, -2., 0., -sq2, -sq2, 0., -2., sq2, -sq2, -1., -1., -1., 1., 1., 
-         1., 1., -1., -1., 0., 0., 1., 1., 0., 0., -1., -soth, soth, soth,soth]
-        coo = DataArrayDouble(coo); coo.rearrange(2) 
-        m.setCoords(coo)
-        c = [NORM_QPOLYG, 8, 9, 10, 11, 12, 13, 14, 15, NORM_QPOLYG, 3, 1, 10, 9, 2, 17, 13, 16, NORM_QPOLYG, 1, 7, 5, 3, 9, 8, 11, 10, 0, 6, 4, 16, 12, 15, 14, 17]
-        cI = [0, 9, 18, 35]
-        m.setConnectivity(DataArrayInt(c), DataArrayInt(cI))
-        m.checkConsistencyLight()
-        coords2 = [1., 2., 1., -2.]
-        connec2, cI2 = [NORM_SEG2, 0, 1], [0,3]
-        m_line = MEDCouplingUMesh("seg", 1)  
-        m_line.setCoords(DataArrayDouble(coords2, len(coords2)/2, 2))
-        m_line.setConnectivity(DataArrayInt(connec2), DataArrayInt(cI2))
-        a, b, c, d = MEDCouplingUMesh.Intersect2DMeshWith1DLine(m, m_line, eps)
-        self.assertTrue(a.getCoords().getHiddenCppPointer()==b.getCoords().getHiddenCppPointer())
-        self.assertTrue(a.getCoords()[:m.getNumberOfNodes()].isEqual(m.getCoords(),1e-12))
-        self.assertTrue(a.getCoords()[m.getNumberOfNodes():m.getNumberOfNodes()+m_line.getNumberOfNodes()].isEqual(m_line.getCoords(),1e-12))
-        self.assertTrue(a.getCoords().isEqual(DataArrayDouble([(2., 0.),(1.4142135623730951,1.4142135623730951),(0.,2.),(-1.4142135623730951,1.4142135623730951),(-2.,0.),(-1.4142135623730951,-1.4142135623730951),(0.,-2.),(1.4142135623730951,-1.4142135623730951),(-1.,-1.),(-1.,1.),(1.,1.),(1.,-1.),(-1.,0.),(0.,1.),(1.,0.),(0.,-1.),(-1.2071067811865475,1.2071067811865475),(1.2071067811865475,1.2071067811865475),(1.,2.),(1.,-2.),(1.,1.7320508075688772),(1.,-1.7320508075688772),(1.2071067811865475,1.2071067811865475),(1.,1.3660254037844386),(1.217522858017441,1.5867066805824703),(-1.2071067811865475,1.2071067811865475),(-0.2610523844401028,1.9828897227476208),(1.,1.3660254037844386),(0.,1.),(1.2071067811865475,1.2071067811865475),(2.,0.),(1.217522858017441,-1.5867066805824703),(1.,-1.3660254037844386),(1.,0.),(-2.,0.),(-1.2071067811865475,1.2071067811865475),(-1.,0.),(0.,-1.),(1.,-1.3660254037844386),(-0.2610523844401028,-1.9828897227476208)]),1e-12))
-        self.assertEqual([32,8,9,10,11,12,13,14,15,32,1,10,20,22,23,24,32,9,3,20,10,25,26,27,28,32,10,1,7,21,11,29,30,31,32,33,32,5,3,9,8,11,21,34,35,36,37,38,39],a.getNodalConnectivity().getValues())
-        self.assertEqual([0,9,16,25,36,49],a.getNodalConnectivityIndex().getValues())
-        self.assertEqual([1,18,20,1,20,10,1,10,11,1,11,21,1,21,19],b.getNodalConnectivity().getValues())
-        self.assertEqual([0,3,6,9,12,15],b.getNodalConnectivityIndex().getValues())
-        self.assertTrue(c.isEqual(DataArrayInt([0,1,1,2,2])))
-        self.assertTrue(d.isEqual(DataArrayInt([(-1,-1),(1,2),(3,0),(3,4),(-1,-1)])))
-        pass
-
     def testOrderConsecutiveCells1D1(self):
         """A line in several unconnected pieces:"""
         m2 = MEDCouplingUMesh.New("bla", 1)
@@ -3628,25 +3129,25 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
                                NORM_SEG2,11,12,NORM_SEG2,12,13,
                                NORM_SEG2,14,15])
         cI = DataArrayInt([0,3,7,10,14,18,21,24,27,30])
-        coords2 = DataArrayDouble([float(i) for i in range(32)], 16,2)
+        coords2 = DataArrayDouble([float(i) for i in range(32)], 16, 2)
         m2.setCoords(coords2);
         m2.setConnectivity(c, cI);
         m2.checkConsistency(1.0e-8);
-      
+
         # Shuffle a bit :-)
         m2.renumberCells(DataArrayInt([0,3,6,8,1,4,7,5,2]), True);
         res = m2.orderConsecutiveCells1D()
         expRes = [0,3,6,8,1,4,2,7,5]
         self.assertEqual(m2.getNumberOfCells(),res.getNumberOfTuples())
         self.assertEqual(expRes, res.getValues())
-      
+
         # A closed line (should also work)
         m3 = MEDCouplingUMesh.New("bla3", 1)
         conn3A = DataArrayInt([NORM_SEG2,0,1,NORM_SEG3,1,3,2, NORM_SEG2,3,0])
         coord3 = coords2[0:5]
         c.reAlloc(10)
         cI.reAlloc(4)
-        
+
         m3.setCoords(coord3)
         m3.setConnectivity(conn3A, cI)
         m3.checkConsistency(1.0e-8)
@@ -3802,7 +3303,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
 
     def testSwig2DAIGetIdsStrictlyNegative1(self):
         d=DataArrayInt([4,-5,-1,0,3,99,-7])
-        self.assertTrue(d.findIdsStricltyNegative().isEqual(DataArrayInt([1,2,6])))
+        self.assertTrue(d.findIdsStrictlyNegative().isEqual(DataArrayInt([1,2,6])))
         pass
 
     def testSwig2DAIReplaceOneValByInThis1(self):
@@ -3851,7 +3352,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         li=[]
         liExp3D=[(0,0,0),(1,0,0),(2,0,0),(3,0,0),(0,1,0),(1,1,0),(2,1,0),(3,1,0),(0,2,0),(1,2,0),(2,2,0),(3,2,0),(0,0,1),(1,0,1),(2,0,1),(3,0,1),(0,1,1),(1,1,1),(2,1,1),(3,1,1),(0,2,1),(1,2,1),(2,2,1),(3,2,1)]
         self.assertEqual(24,m.getNumberOfCells())
-        for i in xrange(m.getNumberOfCells()):
+        for i in range(m.getNumberOfCells()):
             li.append(m.getLocationFromCellId(i))
             pass
         self.assertEqual(liExp3D,li)
@@ -3864,7 +3365,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         li=[]
         liExp2D=[(0,0),(1,0),(2,0),(3,0),(0,1),(1,1),(2,1),(3,1),(0,2),(1,2),(2,2),(3,2)]
         self.assertEqual(12,m.getNumberOfCells())
-        for i in xrange(m.getNumberOfCells()):
+        for i in range(m.getNumberOfCells()):
             li.append(m.getLocationFromCellId(i))
             pass
         self.assertEqual(liExp2D,li)
@@ -3874,7 +3375,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         arrX=DataArrayDouble(5) ; arrX.iota()
         m=MEDCouplingCMesh() ; m.setCoords(arrX)
         self.assertEqual(4,m.getNumberOfCells())
-        for i in xrange(m.getNumberOfCells()):
+        for i in range(m.getNumberOfCells()):
             self.assertEqual((i,),m.getLocationFromCellId(i))
             pass
         self.assertRaises(InterpKernelException,m.getLocationFromCellId,4)
@@ -3890,7 +3391,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         li=[]
         liExp3D=[(0,0,0),(1,0,0),(2,0,0),(3,0,0),(4,0,0),(0,1,0),(1,1,0),(2,1,0),(3,1,0),(4,1,0),(0,2,0),(1,2,0),(2,2,0),(3,2,0),(4,2,0),(0,3,0),(1,3,0),(2,3,0),(3,3,0),(4,3,0),(0,0,1),(1,0,1),(2,0,1),(3,0,1),(4,0,1),(0,1,1),(1,1,1),(2,1,1),(3,1,1),(4,1,1),(0,2,1),(1,2,1),(2,2,1),(3,2,1),(4,2,1),(0,3,1),(1,3,1),(2,3,1),(3,3,1),(4,3,1),(0,0,2),(1,0,2),(2,0,2),(3,0,2),(4,0,2),(0,1,2),(1,1,2),(2,1,2),(3,1,2),(4,1,2),(0,2,2),(1,2,2),(2,2,2),(3,2,2),(4,2,2),(0,3,2),(1,3,2),(2,3,2),(3,3,2),(4,3,2)]
         self.assertEqual(60,m.getNumberOfNodes())
-        for i in xrange(m.getNumberOfNodes()):
+        for i in range(m.getNumberOfNodes()):
             li.append(m.getLocationFromNodeId(i))
             pass
         self.assertEqual(liExp3D,li)
@@ -3903,7 +3404,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         li=[]
         liExp2D=[(0,0),(1,0),(2,0),(3,0),(4,0),(0,1),(1,1),(2,1),(3,1),(4,1),(0,2),(1,2),(2,2),(3,2),(4,2),(0,3),(1,3),(2,3),(3,3),(4,3)]
         self.assertEqual(20,m.getNumberOfNodes())
-        for i in xrange(m.getNumberOfNodes()):
+        for i in range(m.getNumberOfNodes()):
             li.append(m.getLocationFromNodeId(i))
             pass
         self.assertEqual(liExp2D,li)
@@ -3913,7 +3414,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         arrX=DataArrayDouble(5) ; arrX.iota()
         m=MEDCouplingCMesh() ; m.setCoords(arrX)
         self.assertEqual(5,m.getNumberOfNodes())
-        for i in xrange(m.getNumberOfNodes()):
+        for i in range(m.getNumberOfNodes()):
             self.assertEqual((i,),m.getLocationFromNodeId(i))
             pass
         self.assertRaises(InterpKernelException,m.getLocationFromCellId,5)
@@ -3931,7 +3432,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         st0=d.repr() ; st1=str(d) ; st2=d.reprNotTooLong()
         self.assertNotEqual(st0,st1) # 1001 tuples ( > 1000) -> str(d)==d.reprNotTooLong()
         self.assertEqual(st1,st2)
-        self.assertIn(len(st2),xrange(0,1000)) # no more than 1000 characters
+        self.assertIn(len(st2), list(range(0, 1000)))  # no more than 1000 characters
         ## Now for DataArrayInt
         d=DataArrayInt(2000) ; d.iota() ; d.rearrange(2)
         st0=d.repr() ; st1=str(d) ; st2=d.reprNotTooLong()
@@ -3942,7 +3443,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         st0=d.repr() ; st1=str(d) ; st2=d.reprNotTooLong()
         self.assertNotEqual(st0,st1) # 1001 tuples ( > 1000) -> str(d)==d.reprNotTooLong()
         self.assertEqual(st1,st2)
-        self.assertIn(len(st2),xrange(0,1000)) # no more than 1000 characters
+        self.assertIn(len(st2), list(range(0, 1000)))  # no more than 1000 characters
         pass
 
     def testExtrudedMeshWithoutZipCoords1(self):
@@ -4016,8 +3517,8 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         coo=DataArrayDouble([(0,2),(2,0),(6,4),(4,9)])
         m=MEDCoupling1SGTUMesh("mesh",NORM_QUAD4) ; m.setCoords(coo)
         exp3=sqrt(85.)
-        for delta in xrange(4):
-            c=[(elt+delta)%4 for elt in xrange(4)]
+        for delta in range(4):
+            c = [(elt + delta) % 4 for elt in range(4)]
             m.setNodalConnectivity(DataArrayInt(c))
             self.assertAlmostEqual(m.computeDiameterField().getArray()[0],exp3,12)
             m2=m.buildUnstructured() ; m2.convertLinearCellsToQuadratic(0)
@@ -4034,8 +3535,8 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         # QUAD4 - spacedim = 3
         coo=DataArrayDouble([(0.26570992384234871,2.0405889913271817,-0.079134238105786903),(2.3739976619218064,0.15779148692781009,0.021842842914139737),(6.1207841448393197,4.3755532938679655,0.43666375769970678),(3.8363255342943359,9.2521096041694229,0.41551170895942313)])
         m=MEDCoupling1SGTUMesh("mesh",NORM_QUAD4) ; m.setCoords(coo)
-        for delta in xrange(4):
-            c=[(elt+delta)%4 for elt in xrange(4)]
+        for delta in range(4):
+            c = [(elt + delta) % 4 for elt in range(4)]
             m.setNodalConnectivity(DataArrayInt(c))
             self.assertAlmostEqual(m.computeDiameterField().getArray()[0],exp3,12)
             m2=m.buildUnstructured() ; m2.convertLinearCellsToQuadratic(0)
@@ -4055,8 +3556,8 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m=MEDCoupling1SGTUMesh("mesh",NORM_PENTA6) ; m.setCoords(coo)
         exp4=2.5041256256889888
         self.assertAlmostEqual(exp4,coo.buildEuclidianDistanceDenseMatrix().getMaxValue()[0],12)# <- the definition of diameter
-        for delta in xrange(3):
-            c=[(elt+delta)%3 for elt in xrange(3)]
+        for delta in range(3):
+            c = [(elt + delta) % 3 for elt in range(3)]
             c+=[elt+3 for elt in c]
             m.setNodalConnectivity(DataArrayInt(c))
             self.assertAlmostEqual(m.computeDiameterField().getArray()[0],exp4,12)
@@ -4073,8 +3574,8 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m=MEDCoupling1SGTUMesh("mesh",NORM_HEXA8) ; m.setCoords(coo)
         exp5=2.5366409441884215
         self.assertAlmostEqual(exp5,coo.buildEuclidianDistanceDenseMatrix().getMaxValue()[0],12)# <- the definition of diameter
-        for delta in xrange(4):
-            c=[(elt+delta)%4 for elt in xrange(4)]
+        for delta in range(4):
+            c = [(elt + delta) % 4 for elt in range(4)]
             c+=[elt+4 for elt in c]
             m.setNodalConnectivity(DataArrayInt(c))
             self.assertAlmostEqual(m.computeDiameterField().getArray()[0],exp5,12)
@@ -4085,14 +3586,14 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
             self.assertAlmostEqual(m.computeDiameterField().getArray()[0],exp5,12)
             m2=m.buildUnstructured() ; m2.convertLinearCellsToQuadratic(0)
             self.assertAlmostEqual(m2.computeDiameterField().getArray()[0],exp5,12)
-        # PYRA5 (1) 5th node is further 
+        # PYRA5 (1) 5th node is further
         # noise of coo=DataArrayDouble([(0,0,0),(1,0,0),(1,1,0),(0,1,0),(0.5,0.5,2)]) + rotation([0.7,-1.2,0.6],[-4,-1,10],0.3)
         coo=DataArrayDouble([(-0.31638393672228626,-0.3157865246451914,-0.12555467233075002),(0.7281379795666488,0.03836511217237115,-0.08431662762197323),(0.4757967840735147,0.8798897996143908,-0.2680890320119049),(-0.5386339871809047,0.5933159894201252,-0.2975311238319419),(0.012042592988768974,0.534282135495012,1.7859521682027926)])
         m=MEDCoupling1SGTUMesh("mesh",NORM_PYRA5) ; m.setCoords(coo)
         exp6=2.1558368027391386
         self.assertAlmostEqual(exp6,coo.buildEuclidianDistanceDenseMatrix().getMaxValue()[0],12)# <- the definition of diameter
-        for delta in xrange(4):
-            c=[(elt+delta)%4 for elt in xrange(4)]
+        for delta in range(4):
+            c = [(elt + delta) % 4 for elt in range(4)]
             c+=[4]
             m.setNodalConnectivity(DataArrayInt(c))
             self.assertAlmostEqual(m.computeDiameterField().getArray()[0],exp6,12)
@@ -4105,8 +3606,8 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m=MEDCoupling1SGTUMesh("mesh",NORM_PYRA5) ; m.setCoords(coo)
         exp7=1.4413563787228953
         self.assertAlmostEqual(exp7,coo.buildEuclidianDistanceDenseMatrix().getMaxValue()[0],12)# <- the definition of diameter
-        for delta in xrange(4):
-            c=[(elt+delta)%4 for elt in xrange(4)]
+        for delta in range(4):
+            c = [(elt + delta) % 4 for elt in range(4)]
             c+=[4]
             m.setNodalConnectivity(DataArrayInt(c))
             self.assertAlmostEqual(m.computeDiameterField().getArray()[0],exp7,12)
@@ -4120,7 +3621,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         exp8=1.7131322579364157
         self.assertAlmostEqual(exp8,coo.buildEuclidianDistanceDenseMatrix().getMaxValue()[0],12)# <- the definition of diameter
         for c in [[0,1,2,3],[0,3,2,1],[0,1,3,2],[0,2,3,1],[0,3,1,2],[0,2,1,3]]:
-            for i in xrange(4):
+            for i in range(4):
                 m.setNodalConnectivity(DataArrayInt([(elt+i)%4 for elt in c]))
                 self.assertAlmostEqual(m.computeDiameterField().getArray()[0],exp8,12)
                 m2=m.buildUnstructured() ; m2.convertLinearCellsToQuadratic(0)
@@ -4138,19 +3639,19 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertEqual( 0,  sla0.getLength() )
         sla0.set( index, value )
         self.assertTrue( index.isEqual( sla0.getIndexArray() ))
-        self.assertTrue( value.isEqual( sla0.getValueArray() ))
+        self.assertTrue( value.isEqual( sla0.getValuesArray() ))
         self.assertEqual( 4, sla0.getNumberOf() )
         self.assertEqual( 6, sla0.getLength() )
 
         sla1 = MEDCouplingSkyLineArray( index, value )
         self.assertTrue( index.isEqual( sla1.getIndexArray() ))
-        self.assertTrue( value.isEqual( sla1.getValueArray() ))
+        self.assertTrue( value.isEqual( sla1.getValuesArray() ))
         self.assertEqual( 4, sla1.getNumberOf() )
         self.assertEqual( 6, sla1.getLength() )
 
         sla2 = MEDCouplingSkyLineArray( sla1 )
         self.assertTrue( index.isEqual( sla2.getIndexArray() ))
-        self.assertTrue( value.isEqual( sla2.getValueArray() ))
+        self.assertTrue( value.isEqual( sla2.getValuesArray() ))
         self.assertEqual( 4, sla2.getNumberOf() )
         self.assertEqual( 6, sla2.getLength() )
 
@@ -4160,12 +3661,108 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         for i in value: valueVec.push_back( i[0] )
         sla3 = MEDCouplingSkyLineArray( indexVec, valueVec )
         self.assertTrue( index.isEqual( sla3.getIndexArray() ))
-        self.assertTrue( value.isEqual( sla3.getValueArray() ))
+        self.assertTrue( value.isEqual( sla3.getValuesArray() ))
         self.assertEqual( 4, sla3.getNumberOf() )
         self.assertEqual( 6, sla3.getLength() )
 
         pass
-   
+
+    def testMEDCouplingSkyLineArrayThreeLevels(self):
+        #  [[28,1,4]] , [[2,35,8], [9,10,1,12]]
+        superi = DataArrayInt([ 0,1,3 ])
+        index = DataArrayInt ([ 0,3,6,10 ])
+        value = DataArrayInt ([ 28,1,4,2,35,8,9,10,1,12 ])
+
+        sla0 = MEDCouplingSkyLineArray()
+        self.assertEqual( -1, sla0.getSuperNumberOf() )
+        self.assertEqual( -1, sla0.getNumberOf() )
+        self.assertEqual( 0,  sla0.getLength() )
+        sla0.set3( superi.deepCopy(), index.deepCopy(), value.deepCopy() )
+        self.assertTrue( superi.isEqual( sla0.getSuperIndexArray() ))
+
+        pack = sla0.getSimplePackSafe(2)
+        self.assertEqual([9,10,1,12], pack)
+        ids = sla0.findPackIds([0,1], [9,10,1,12])
+        self.assertEqual([-1,1], ids)
+
+        sla0.deletePack(1, 1)
+        si, idx, val = sla0.getSuperIndexArray(), sla0.getIndexArray(), sla0.getValuesArray()
+        self.assertEqual([28,1,4,2,35,8], val.getValues())
+        self.assertEqual([0,3,6], idx.getValues())
+        self.assertEqual([0,1,2], si.getValues())
+
+        sla0.pushBackPack(0, [3,2,1,0])
+        si, idx, val = sla0.getSuperIndexArray(), sla0.getIndexArray(), sla0.getValuesArray()
+        self.assertEqual([0,2,3], si.getValues())
+        self.assertEqual([0,3,7,10], idx.getValues())
+        self.assertEqual([28,1,4,3,2,1,0,  2,35,8], val.getValues())
+
+        # Build connectivity from POLYHED connectivity
+        cI = [0,16,41]
+        c = [NORM_POLYHED, 1,2,3,-1,  2,3,4,-1,  3,4,5,-1,  4,5,6,
+             NORM_POLYHED, 7,8,9,10,-1,  9,10,11,12,-1,  3,4,5,6,-1,  5,6,7,8,-1,  9,10,11,12]
+        sla0 = MEDCouplingSkyLineArray.BuildFromPolyhedronConn(DataArrayInt(c), DataArrayInt(cI))
+        si, idx, val = sla0.getSuperIndexArray(), sla0.getIndexArray(), sla0.getValuesArray()
+        self.assertEqual([0,4,9], si.getValues())
+        self.assertEqual([0,3,6,9,12,16,20,24,28,32], idx.getValues())
+        self.assertEqual([1,2,3,  2,3,4,  3,4,5,  4,5,6,
+                          7,8,9,10,   9,10,11,12,  3,4,5,6,  5,6,7,8,  9,10,11,12], val.getValues())
+        c1, cI1 = sla0.convertToPolyhedronConn()
+        self.assertEqual(c1.getValues(), c)
+        self.assertEqual(cI1.getValues(), cI)
+        pass
+
+    def testMEDCouplingSkyLineArrayThreeLevels2(self):
+        si = [0, 9, 15, 21]
+        siRef = [0, 9, 16, 22]
+        idx = [0,4,8,12,16,20,23,26,29,  32,36,40,44,48,52,  56,60,64,68,72,76,80]
+        c = [1,0,2,3,  5,7,6,4,  1,5,4,0,  0,4,6,2,  2,6,7,3,  3,7,8,  7,5,8,  5,1,8,  1,3,8,
+             9,1,3,10,  11,12,7,5,  9,11,5,1,  1,5,7,3,  3,7,12,10,  10,12,11,9,
+             11,5,7,12,  14,16,15,13,  11,14,13,5,  5,13,15,7,  7,15,16,12,  12,16,14,11]
+        idxRef = [0,4,8,12,16,20,23,26,29,32,36,40,44,48,52,55,58, 62, 66, 70, 74, 78, 82 ]
+        cRef = [1,0,2,3,  5,7,6,4,  1,5,4,0,  0,4,6,2,  2,6,7,3,  3,7,8,  7,5,8,  5,1,8,  1,3,8,
+             9,1,3,10,  11,12,7,5,  9,11,5,1,  3,7,12,10,  10,12,11,9,  3,7,8,  7,5,8,
+             11,5,7,12,  14,16,15,13,  11,14,13,5,  5,13,15,7,  7,15,16,12,  12,16,14,11]
+        sla0 = MEDCouplingSkyLineArray()
+        sla0.set3( DataArrayInt(si), DataArrayInt(idx), DataArrayInt(c) )
+        ids = sla0.findPackIds([1], [1,5,7,3])
+        sla0.deletePack(1, ids[0])
+        sla0.pushBackPack(1, [3,7,8])
+        sla0.pushBackPack(1, [7,5,8])
+        si, idx, val = sla0.getSuperIndexArray(), sla0.getIndexArray(), sla0.getValuesArray()
+        self.assertEqual(siRef, si.getValues())
+        self.assertEqual(idxRef, idx.getValues())
+        self.assertEqual(cRef, val.getValues())
+
+        idxRef2 = [0,4,8,12,16,20,23,26,29,32,36,40,42,46,50,53,56, 60, 64, 68, 72, 76, 80 ]
+        cRef2 = [1,0,2,3,  5,7,6,4,  1,5,4,0,  0,4,6,2,  2,6,7,3,  3,7,8,  7,5,8,  5,1,8,  1,3,8,
+             9,1,3,10,  11,12,7,5,  300,300,  3,7,12,10,  10,12,11,9,  3,7,8,  7,5,8,
+             11,5,7,12,  14,16,15,13,  11,14,13,5,  5,13,15,7,  7,15,16,12,  12,16,14,11]
+        sla0.replacePack(1,2, [300,300])
+        si, idx, val = sla0.getSuperIndexArray(), sla0.getIndexArray(), sla0.getValuesArray()
+        self.assertEqual(siRef, si.getValues())
+        self.assertEqual(idxRef2, idx.getValues())
+        self.assertEqual(cRef2, val.getValues())
+
+        sla0.replacePack(1,2, [9,11,5,1])
+        si, idx, val = sla0.getSuperIndexArray(), sla0.getIndexArray(), sla0.getValuesArray()
+        self.assertEqual(siRef, si.getValues())
+        self.assertEqual(idxRef, idx.getValues())
+        self.assertEqual(cRef, val.getValues())
+
+        sla0.replaceSimplePack(11, [300,300])  # 11 is the abs index of pack (superIdx=1,idx=2)
+        si, idx, val = sla0.getSuperIndexArray(), sla0.getIndexArray(), sla0.getValuesArray()
+        self.assertEqual(siRef, si.getValues())
+        self.assertEqual(idxRef2, idx.getValues())
+        self.assertEqual(cRef2, val.getValues())
+
+        sla0.replaceSimplePack(11, [9,11,5,1])  # 11 is the abs index of pack (superIdx=1,idx=2)
+        si, idx, val = sla0.getSuperIndexArray(), sla0.getIndexArray(), sla0.getValuesArray()
+        self.assertEqual(siRef, si.getValues())
+        self.assertEqual(idxRef, idx.getValues())
+        self.assertEqual(cRef, val.getValues())
+        pass
+
     def testMEDCouplingUMeshgenerateGraph(self):
         # cartesian mesh 3x3
         arr=DataArrayDouble(4) ; arr.iota()
@@ -4184,7 +3781,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
                  3,6,7,
                  4,6,7,8,
                  5,7,8]
-        self.assertEqual(valRef,list(graph.getValueArray().getValues()));
+        self.assertEqual(valRef,list(graph.getValuesArray().getValues()));
 
         indRef=[0, 3, 7, 10, 14, 19, 23, 26, 30, 33]
         self.assertEqual(indRef,list(graph.getIndexArray().getValues()));
@@ -4288,9 +3885,9 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m.setCoords(arrX,arrX)
         f=MEDCouplingFieldInt(ON_CELLS)
         f.setMesh(m)
-        arr=DataArrayInt(8) ; arr.iota() ;f.setArray(arr)
+        arr=DataArrayInt32(8) ; arr.iota() ;f.setArray(arr)
         self.assertRaises(InterpKernelException,f.checkConsistencyLight)
-        arr=DataArrayInt(9) ; arr.iota() ;f.setArray(arr)
+        arr=DataArrayInt32(9) ; arr.iota() ;f.setArray(arr)
         f.checkConsistencyLight()
         f.setTimeUnit("ms")
         self.assertEqual(f.getTimeUnit(),"ms")
@@ -4338,41 +3935,41 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         m1=MEDCouplingCMesh() ; m1.setCoords(DataArrayDouble([0,1,2,3]),DataArrayDouble([0,1,2,3,4]))
         m1=m1.buildUnstructured() ; m1.setName("mesh")
         f1=MEDCouplingFieldInt(ON_CELLS) ; f1.setMesh(m1)
-        arr1=DataArrayInt([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr1.setInfoOnComponents(["aa","bbb"])
+        arr1=DataArrayInt32([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr1.setInfoOnComponents(["aa","bbb"])
         f1.setArray(arr1) ; f1.setName("f1") ; f1.setTime(2.,3,4)
         #
         m2=MEDCouplingCMesh() ; m2.setCoords(DataArrayDouble([0,1,2,3]),DataArrayDouble([0,1,2,3,4]))
         m2=m2.buildUnstructured() ; m2.setName("mesh")
         f2=MEDCouplingFieldInt(ON_CELLS) ; f2.setMesh(m2)
-        arr2=DataArrayInt([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr2.setInfoOnComponents(["aa","bbb"])
+        arr2=DataArrayInt32([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr2.setInfoOnComponents(["aa","bbb"])
         f2.setArray(arr2) ; f2.setName("f1") ; f2.setTime(2.,3,4)
         #
-        self.assertTrue(f1.isEqual(f2,1e-12,0.))
+        self.assertTrue(f1.isEqual(f2,1e-12,0))
         f1.getArray()[:]*=2
-        self.assertTrue(not f1.isEqual(f2,1e-12,0.))
-        self.assertTrue(not f1.isEqualWithoutConsideringStr(f2,1e-12,0.))
+        self.assertTrue(not f1.isEqual(f2,1e-12,0))
+        self.assertTrue(not f1.isEqualWithoutConsideringStr(f2,1e-12,0))
         f1.getArray()[:]/=2
-        self.assertTrue(f1.isEqual(f2,1e-12,0.))
+        self.assertTrue(f1.isEqual(f2,1e-12,0))
         #
         f1.setName("F1")
-        self.assertTrue(not f1.isEqual(f2,1e-12,0.))
+        self.assertTrue(not f1.isEqual(f2,1e-12,0))
         f1.setName("f1")
-        self.assertTrue(f1.isEqual(f2,1e-12,0.))
+        self.assertTrue(f1.isEqual(f2,1e-12,0))
         #
         f1.getArray().setInfoOnComponents(["aa","bbbb"])
-        self.assertTrue(not f1.isEqual(f2,1e-12,0.))
-        self.assertTrue(f1.isEqualWithoutConsideringStr(f2,1e-12,0.))
+        self.assertTrue(not f1.isEqual(f2,1e-12,0))
+        self.assertTrue(f1.isEqualWithoutConsideringStr(f2,1e-12,0))
         f1.getArray().setInfoOnComponents(["aa","bbb"])
-        self.assertTrue(f1.isEqual(f2,1e-12,0.))
+        self.assertTrue(f1.isEqual(f2,1e-12,0))
         #
         f3=f2.deepCopy()
-        self.assertTrue(f1.isEqual(f3,1e-12,0.))
+        self.assertTrue(f1.isEqual(f3,1e-12,0))
         #
         for fd,expected in ((ON_NODES,False),(ON_CELLS,True)):
             f4=MEDCouplingFieldInt(fd) ; f4.setMesh(m2) ; f4.setTime(2.,3,4)
-            arr4=DataArrayInt([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr4.setInfoOnComponents(["aa","bbb"])
+            arr4=DataArrayInt32([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr4.setInfoOnComponents(["aa","bbb"])
             f4.setArray(arr4) ; f4.setName("f1")
-            self.assertEqual(f1.isEqual(f4,1e-12,0.),expected)
+            self.assertEqual(f1.isEqual(f4,1e-12,0),expected)
             pass
         pass
 
@@ -4590,7 +4187,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         field=MEDCouplingFieldDouble(ON_GAUSS_PT)
         field.setName("MyFieldPG") ; field.setMesh(tmp)
         field.setGaussLocalizationOnType(NORM_QUAD4,[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.8,-0.8, 0.8,0.8, -0.8,0.8, -0.8,-0.8, 0.,0., 0.2,0.2, 0.1,0.3],[0.1,0.1,0.1,0.1,0.1,0.1,0.4])
-        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota() 
+        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota()
         field.setArray(arr)
         field.checkConsistencyLight()
         ####
@@ -4617,7 +4214,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         field=MEDCouplingFieldDouble(ON_GAUSS_PT)
         field.setName("MyFieldPG") ; field.setMesh(tmp)
         field.setGaussLocalizationOnType(NORM_QUAD4,[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.8,-0.8, 0.8,0.8, -0.8,0.8, -0.8,-0.8, 0.,0., 0.2,0.2, 0.1,0.3],[0.1,0.1,0.1,0.1,0.1,0.1,0.4])
-        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota() 
+        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota()
         field.setArray(arr)
         field.checkConsistencyLight()
         #
@@ -4670,7 +4267,7 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         field=MEDCouplingFieldDouble(ON_GAUSS_PT)
         field.setName("MyFieldPG") ; field.setMesh(tmp)
         field.setGaussLocalizationOnType(NORM_HEXA8,[-1,-1,-1,  1,-1,-1,  1,1,-1,  -1,1,-1, -1,-1,1, 1,-1,1, 1,1,1, -1,1,1],[0.8,-0.8,0., 0.8,0.8,0., -0.8,0.8,0., -0.8,-0.8,0., 0.,0.,0., 0.2,0.2,0., 0.1,0.3,0.],[0.1,0.1,0.1,0.1,0.1,0.1,0.4])
-        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota() 
+        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota()
         field.setArray(arr)
         field.checkConsistencyLight()
         ####
@@ -4698,16 +4295,16 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         field=MEDCouplingFieldDouble(ON_GAUSS_PT)
         field.setName("MyFieldPG") ; field.setMesh(tmp)
         field.setGaussLocalizationOnType(NORM_HEXA8,[-1,-1,-1,  1,-1,-1,  1,1,-1,  -1,1,-1, -1,-1,1, 1,-1,1, 1,1,1, -1,1,1],[0.8,-0.8,0., 0.8,0.8,0., -0.8,0.8,0., -0.8,-0.8,0., 0.,0.,0., 0.2,0.2,0., 0.1,0.3,0.],[0.1,0.1,0.1,0.1,0.1,0.1,0.4])
-        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota() 
+        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota()
         field.setArray(arr)
         field.checkConsistencyLight()
         #
         fieldOnCell=field.voronoize(1e-12) # hot point
         fieldOnCell.checkConsistencyLight()
         self.assertEqual(fieldOnCell.getMesh().getNumberOfCells(),7)
-        self.assertEqual(fieldOnCell.getMesh().getNumberOfNodes(),32)
+        self.assertEqual(fieldOnCell.getMesh().getNumberOfNodes(),34)
         self.assertTrue(fieldOnCell.getArray().isEqual(field.getArray(),1e-12))
-        meaRef=DataArrayDouble([1.3,1.0,1.1975,1.36,1.4775,0.8,0.865])
+        meaRef=DataArrayDouble([1.3,0.9421428571428572,1.1975,1.36,1.4775,0.8,0.922857142857143])
         mea=fieldOnCell.getMesh().getMeasureField(True).getArray()
         self.assertTrue(mea.isEqual(meaRef,1e-12))# the first important test is here
         self.assertEqual(field.getDiscretization().getNbOfGaussLocalization(),1)
@@ -4718,7 +4315,36 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         self.assertTrue(a.isIota(7))# the second important test is here ! Check that Gauss points are inside the associated cell in fieldOnCell !
         self.assertTrue(b.isIota(8))
         #
-        self.assertEqual(fieldOnCell.getMesh().buildDescendingConnectivity()[0].getNumberOfCells(),2*7+22)# last little test to reduce chance of errors. For humans there 21 but last tiny edge is split into 2 subedges due to alg
+        self.assertEqual(fieldOnCell.getMesh().buildDescendingConnectivity()[0].getNumberOfCells(),2*7+21)
+        pass
+
+    def testVoronoi3D_8(self):
+        """More aggressive 3D test. Bug EDF 15094"""
+        mesh = MEDCouplingUMesh("myMeshForAnthony",3)
+        coords = [2.20449946892035, 0.0015302058397972198, -0.014025000000000001, 2.20449522028465, 0.00459061457029268, -0.0109750000232271, 2.20449946892035, 0.0015302058397972198, -0.0125000000116135, 2.20577243296484, 0.00153108944037966, -0.0137555135576553, 2.20517315768831, 0.0045920262990614006, -0.010764118475206199, 2.2054749202977, 0.0015308829283677198, -0.012259816016430801, 2.20449787568164, 0.00306041094231961, -0.0125000000116135, 2.20449787568164, 0.00306041094231961, -0.011737500017420301, 2.20449946892035, 0.0015302058397972198, -0.0132625000058068, 2.20513595094259, 0.0015306476400884401, -0.0138902567788277, 2.20483418898648, 0.0045913204346770395, -0.0108695592492167, 2.20498719460902, 0.00153054438408247, -0.0123799080140222, 2.20547332635401, 0.0030617651191343705, -0.012259816016430801, 2.20532457012796, 0.00306155860717217, -0.0115119672458185, 2.20562367663127, 0.0015309861843736902, -0.013007664787043, 2.20582504233773, 0.0045933837758852306, -0.010139577890770399, 2.20642582267143, 0.004594634833691141, -0.009125379014333041, 2.20612543250458, 0.00459400930478819, -0.00963247845255172, 2.2069524110381, 0.004595731395029229, -0.00776049693994639, 2.20668911685476, 0.004595183114360191, -0.00844293797713971, 2.20832419990944, 0.0076643330146060895, -0.0108392857142857, 2.20832419990944, 0.0076643330146060895, -0.008671428571428571, 2.20704504094678, 0.00765989349423635, -0.008671428571428571, 2.20704504094678, 0.00765989349423635, -0.0108392857142857, 2.2062381754171, 0.00459424407928538, -0.00868052596233734, 2.20832419990944, 0.0076643330146060895, -0.00975535714285714, 2.20768462042811, 0.00766211325442122, -0.008671428571428571, 2.20704504094678, 0.00765989349423635, -0.00975535714285714, 2.20768462042811, 0.00766211325442122, -0.0108392857142857, 2.20737554490036, 0.00612882358882901, -0.009982332364309381, 2.20763883863969, 0.00612955462931014, -0.00821596275568748, 2.2066421405633703, 0.00612678727660696, -0.00867597726688296, 2.20643557437203, 0.006126213741329251, -0.0104894318025281, 2.2065952932276, 0.00459498773715731, -0.00822051145114186, 2.20603160887741, 0.00459381392758531, -0.00941005192655387]
+        da = DataArrayDouble.New(coords,35,3)
+        mesh.setCoords(da)
+        mesh.allocateCells()
+        mesh.insertNextCell(NORM_PENTA15, [0, 2, 1, 3, 5, 4, 8, 7, 6, 14, 13, 12, 9, 11, 10])
+        mesh.insertNextCell(NORM_HEXA20, [20, 23, 22, 21, 16, 15, 24, 18, 28, 27, 26, 25, 17, 34, 33, 19, 29, 32, 31, 30])
+        mesh.zipCoords()
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT)
+        f.setMesh(mesh)
+        f.setName("myFieldForAnthony")
+        f.setGaussLocalizationOnCells([0],[-1, 1, 0, -1, 0, 0, -1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, -1, 0.5, 0, -1, 0, 0.5, -1, 0.5, 0.5, 1, 0.5, 0, 1, 0, 0.5, 1, 0.5, 0.5, 0, 1, 0, 0, 0, 0, 0, 0, 1],[-0.774597, 0.333333, 0.333333, -0.774597, 0.470142, 0.470142, -0.774597, 0.0597159, 0.470142, -0.774597, 0.470142, 0.0597159, -0.774597, 0.101287, 0.101287, -0.774597, 0.797427, 0.101287, -0.774597, 0.101287, 0.797427, 0, 0.333333, 0.333333, 0, 0.470142, 0.470142, 0, 0.0597159, 0.470142, 0, 0.470142, 0.0597159, 0, 0.101287, 0.101287, 0, 0.797427, 0.101287, 0, 0.101287, 0.797427, 0.774597, 0.333333, 0.333333, 0.774597, 0.470142, 0.470142, 0.774597, 0.0597159, 0.470142, 0.774597, 0.470142, 0.0597159, 0.774597, 0.101287, 0.101287, 0.774597, 0.797427, 0.101287, 0.774597, 0.101287, 0.797427],[0.0625, 0.0367762, 0.0367762, 0.0367762, 0.0349831, 0.0349831, 0.0349831, 0.1, 0.0588418, 0.0588418, 0.0588418, 0.055973, 0.055973, 0.055973, 0.0625, 0.0367762, 0.0367762, 0.0367762, 0.0349831, 0.0349831, 0.0349831])
+        f.setGaussLocalizationOnCells([1],[-1, -1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, -1, -1, 1, -1, 1, 1, 1, 1, 1, 1, -1, 1, -1, 0, -1, 0, 1, -1, 1, 0, -1, 0, -1, -1, -1, 0, 1, 0, 1, 1, 1, 0, 1, 0, -1, 1, -1, -1, 0, -1, 1, 0, 1, 1, 0, 1, -1, 0],[-0.774597, -0.774597, -0.774597, -0.774597, -0.774597, 0, -0.774597, -0.774597, 0.774597, -0.774597, 0, -0.774597, -0.774597, 0, 0, -0.774597, 0, 0.774597, -0.774597, 0.774597, -0.774597, -0.774597, 0.774597, 0, -0.774597, 0.774597, 0.774597, 0, -0.774597, -0.774597, 0, -0.774597, 0, 0, -0.774597, 0.774597, 0, 0, -0.774597, 0, 0, 0, 0, 0, 0.774597, 0, 0.774597, -0.774597, 0, 0.774597, 0, 0, 0.774597, 0.774597, 0.774597, -0.774597, -0.774597, 0.774597, -0.774597, 0, 0.774597, -0.774597, 0.774597, 0.774597, 0, -0.774597, 0.774597, 0, 0, 0.774597, 0, 0.774597, 0.774597, 0.774597, -0.774597, 0.774597, 0.774597, 0, 0.774597, 0.774597, 0.774597],[0.171468, 0.274348, 0.171468, 0.274348, 0.438957, 0.274348, 0.171468, 0.274348, 0.171468, 0.274348, 0.438957, 0.274348, 0.438957, 0.702332, 0.438957, 0.274348, 0.438957, 0.274348, 0.171468, 0.274348, 0.171468, 0.274348, 0.438957, 0.274348, 0.171468, 0.274348, 0.171468])
+        arr = DataArrayDouble(48, 3)
+        arr[:, 0] = list(range(48))
+        arr[:, 1] = 100 + arr[:, 0]
+        arr[:, 2] = 200 + arr[:, 0]
+        f.setArray(arr)
+        fieldOnCell=f.voronoize(1e-12) # hot point
+        fieldOnCell.checkConsistencyLight()
+        self.assertEqual(fieldOnCell.getMesh().getNumberOfCells(),48)
+        self.assertEqual(fieldOnCell.getMesh().getNumberOfNodes(),127)
+        meaRef=f.getMesh().getMeasureField(True).getArray(); meaRef.rearrange(2); meaRef2 = meaRef.sumPerTuple()
+        mea=fieldOnCell.getMesh().getMeasureField(True).getArray(); mea.rearrange(48); mea2 = mea.sumPerTuple()
+        self.assertTrue(mea2.isEqual(meaRef2,1e-9))
         pass
 
     def testVoronoi3DSurf_1(self):
@@ -4745,12 +4371,14 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         field=MEDCouplingFieldDouble(ON_GAUSS_PT)
         field.setName("MyFieldPG") ; field.setMesh(tmp)
         field.setGaussLocalizationOnType(NORM_QUAD4,[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.8,-0.8, 0.8,0.8, -0.8,0.8, -0.8,-0.8, 0.,0., 0.2,0.2, 0.1,0.3],[0.1,0.1,0.1,0.1,0.1,0.1,0.4])
-        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota() 
+        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota()
         field.setArray(arr)
         field.checkConsistencyLight()
         #####
         fieldOnCell=field.voronoize(1e-12);
         fieldOnCell.checkConsistencyLight()
+        self.assertEqual(fieldOnCell.getMesh().getSpaceDimension(),3)
+        self.assertEqual(fieldOnCell.getMesh().getMeshDimension(),2)
         self.assertEqual(field.getMesh().getSpaceDimension(),fieldOnCell.getMesh().getSpaceDimension())
         self.assertTrue(fieldOnCell.getArray().isEqual(field.getArray(),1e-12))
         meaRef=field.getMesh().getMeasureField(True).getArray()
@@ -4761,7 +4389,450 @@ class MEDCouplingBasicsTest5(unittest.TestCase):
         mea2=mea.sumPerTuple()
         self.assertTrue(mea2.isEqual(meaRef,1e-12))
         pass
-    
+
+    def testVoronoi1D_1(self):
+        tmp=MEDCouplingCMesh("mesh")
+        arr=DataArrayDouble(5) ; arr.iota()
+        tmp.setCoords(arr)
+        tmp=tmp.build1SGTUnstructured()
+        tmp1=tmp.deepCopy()
+        tmp.changeSpaceDimension(2,0.)
+        tmp.getCoords()[:,1]=pi/(len(arr)-1)*tmp.getCoords()[:,0]
+        tmp.getCoords()[:,0]=1.
+        tmp.setCoords(tmp.getCoords().fromPolarToCart())
+        tmp.changeSpaceDimension(3,1.)
+        #
+        field=MEDCouplingFieldDouble(ON_GAUSS_PT)
+        field.setName("MyFieldPG") ; field.setMesh(tmp)
+        field.setGaussLocalizationOnType(NORM_SEG2,[-1.,1.],[-0.9,-0.8,0.2,0.4,0.5,0.9],[0.1,0.1,0.1,0.1,0.1,0.5])
+        arr=DataArrayDouble(field.getNumberOfTuplesExpected()) ; arr.iota()
+        field.setArray(arr)
+        field.checkConsistencyLight()
+        ####
+        fieldOnCell=field.voronoize(1e-12);
+        fieldOnCell.checkConsistencyLight()
+        self.assertEqual(fieldOnCell.getMesh().getSpaceDimension(),3)
+        self.assertEqual(fieldOnCell.getMesh().getMeshDimension(),1)
+        assert(fieldOnCell.getArray().isEqual(field.getArray(),1e-12))
+        meaRef=field.getMesh().getMeasureField(True).getArray()
+        mea=fieldOnCell.getMesh().getMeasureField(True).getArray()
+        self.assertEqual(field.getDiscretization().getNbOfGaussLocalization(),1)
+        self.assertEqual(field.getDiscretization().getGaussLocalization(0).getNumberOfGaussPt(),6)
+        mea.rearrange(6)
+        mea2=mea.sumPerTuple()
+        self.assertTrue(mea2.isEqual(meaRef,1e-12))
+        pass
+
+    def testFieldDoubleConvertToLinear1(self):
+        da=DataArrayDouble([0,0, 1,0, 2,0, 3,0, 0.5,0, 1.5,0, 2.5,0, 0,0.5, 0.5,0.5, 1, 0.5, 1.5,0.5, 2,0.5, 3,0.5, 0,1, 1,1, 2,1, 2.5,1, 3,1],18,2)
+        da.setInfoOnComponents(["g","h"])
+        m=MEDCouplingUMesh("mesh",2)
+        m.setCoords(da)
+        m.allocateCells()
+        m.insertNextCell(NORM_TRI6,[0,1,13,4,9,7])
+        m.insertNextCell(NORM_TRI6,[1,2,14,5,10,9])
+        m.insertNextCell(NORM_QUAD8,[2,3,17,15,6,12,16,11])
+        refPtr=m.getHiddenCppPointer()
+        f=MEDCouplingFieldDouble(ON_NODES)
+        f.setName("aa")
+        f.setMesh(m)
+        arr=DataArrayDouble(18*2) ; arr.iota()
+        arr.rearrange(2)
+        arr.setInfoOnComponents(["bb","ccc"])
+        f.setArray(arr)
+        f.setTime(0.5,2,3)
+        f.checkConsistencyLight()
+        #
+        f1=f.convertQuadraticCellsToLinear()
+        self.assertTrue(f.getMesh().getHiddenCppPointer(),refPtr)
+        self.assertTrue(f1.getMesh().getHiddenCppPointer()!=refPtr)
+        f1.checkConsistencyLight()
+        self.assertEqual(f1.getName(),"aa")
+        self.assertEqual(f1.getTypeOfField(),ON_NODES)
+        da0=DataArrayDouble([(0,0),(1,0),(2,0),(3,0),(0,1),(1,1),(2,1),(3,1)])
+        da0.setInfoOnComponents(["g","h"])
+        self.assertTrue(f1.getMesh().getCoords().isEqual(da0,1e-12))
+        self.assertTrue(f1.getMesh().getNodalConnectivity().isEqual(DataArrayInt([3,0,1,4,3,1,2,5,4,2,3,7,6])))
+        self.assertTrue(f1.getMesh().getNodalConnectivityIndex().isEqual(DataArrayInt([0,4,8,13])))
+        da2=DataArrayDouble([(0,1),(2,3),(4,5),(6,7),(26,27),(28,29),(30,31),(34,35)])
+        da2.setInfoOnComponents(["bb","ccc"])
+        self.assertTrue(f1.getArray().isEqual(da2,1e-12))
+        self.assertEqual(f1.getTime(),[0.5,2,3])
+        #
+        f2=MEDCouplingFieldDouble(ON_CELLS)
+        f2.setName("aa")
+        f2.setMesh(m)
+        arr=DataArrayDouble(3*2) ; arr.iota()
+        arr.rearrange(2)
+        arr.setInfoOnComponents(["bb","ccc"])
+        f2.setArray(arr)
+        f2.setTime(0.5,2,3)
+        f2.checkConsistencyLight()
+        f3=f2.convertQuadraticCellsToLinear()
+        self.assertEqual(f2.getMesh().getHiddenCppPointer(),refPtr)
+        f3.checkConsistencyLight()
+        self.assertTrue(f3.getMesh().getHiddenCppPointer()!=refPtr)
+        self.assertTrue(f3.getMesh().getCoords().isEqual(da0,1e-12))
+        self.assertTrue(f3.getMesh().getNodalConnectivity().isEqual(DataArrayInt([3,0,1,4,3,1,2,5,4,2,3,7,6])))
+        self.assertTrue(f3.getMesh().getNodalConnectivityIndex().isEqual(DataArrayInt([0,4,8,13])))
+        self.assertEqual(f2.getArray().getHiddenCppPointer(),f3.getArray().getHiddenCppPointer())
+        self.assertEqual(f3.getTime(),[0.5,2,3])
+        pass
+
+    def testBuild1DMeshFromCoords1(self):
+        da=DataArrayDouble([(3,4),(5,6),(7,8)])
+        da.setName("ZeArr")
+        da0=da.deepCopy()
+        m=MEDCouplingUMesh.Build1DMeshFromCoords(da0)
+        m.checkConsistencyLight()
+        self.assertEqual(da0.getHiddenCppPointer(),m.getCoords().getHiddenCppPointer())
+        self.assertTrue(da.isEqual(da0,1e-12))
+        self.assertEqual(m.getName(),da.getName())
+        self.assertEqual(m.getMeshDimension(),1)
+        self.assertTrue(isinstance(m,MEDCouplingUMesh))
+        m1=MEDCoupling1SGTUMesh(m)
+        m1.checkConsistencyLight()
+        self.assertTrue(m1.getNodalConnectivity().isEqual(DataArrayInt([0,1,1,2])))
+        #
+        da0.setName("")
+        m2=MEDCouplingUMesh.Build1DMeshFromCoords(da0)
+        m2.checkConsistencyLight()
+        self.assertEqual(da0.getHiddenCppPointer(),m2.getCoords().getHiddenCppPointer())
+        self.assertEqual(m2.getName(),"Mesh")
+        pass
+
+    def testVoronoi3D_3(self):
+        """Non regression test to check MEDCouplingUMesh::clipSingle3DCellByPlane"""
+        coo=DataArrayDouble([0.,1.,0.,0.,0.,0.,0.,0.,1.,1.,0.,0.],4,3)
+        m=MEDCouplingUMesh("mesh",3)
+        m.setCoords(coo) ; m.allocateCells()
+        m.insertNextCell(NORM_TETRA4,[0,2,3,1])
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT)
+        f.setMesh(m) ; f.setName("field")
+        f.setGaussLocalizationOnType(NORM_TETRA4,[0.,1.,0.,0.,0.,0.,0.,0.,1.,1.,0.,0.],[0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.1381966011250105], [0.041667,0.041667,0.041667,0.041667])
+        f.setArray(DataArrayDouble([0,1,2,3]))
+        f3=f.voronoize(1e-12)
+        ref=DataArrayDouble([0.047256836610416179,0.03980327668541684,0.039803276685416833,0.039803276685416833])
+        self.assertTrue(f3.getMesh().getMeasureField(False).getArray().isEqual(ref,1e-12))
+        self.assertTrue(f3.getArray().isEqual(DataArrayDouble([0,1,2,3]),1e-12))
+        pass
+
+    def testVoronoi3D_4(self):
+        """Idem testVoronoi3D_3 except that here quadratic cells are considered"""
+        coo=DataArrayDouble([0.0,1.0,0.0,0.0,0.0,0.0,0.0,0.0,1.0,1.0,0.0,0.0,0.0,0.5,0.0,0.0,0.0,0.5,0.0,0.5,0.5,0.5,0.5,0.0,0.5,0.0,0.0,0.5,0.0,0.5],10,3)
+        m=MEDCouplingUMesh("mesh",3)
+        m.setCoords(coo) ; m.allocateCells()
+        m.insertNextCell(NORM_TETRA10,[0,1,2,3,4,5,6,7,8,9])
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT)
+        f.setMesh(m) ; f.setName("field")
+        f.setGaussLocalizationOnType(NORM_TETRA10,[0.0,1.0,0.0,0.0,0.0,0.0,0.0,0.0,1.0,1.0,0.0,0.0,0.0,0.5,0.0,0.0,0.0,0.5,0.0,0.5,0.5,0.5,0.5,0.0,0.5,0.0,0.0,0.5,0.0,0.5],[0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.1381966011250105], [0.041667,0.041667,0.041667,0.041667])
+        f.setArray(DataArrayDouble([0,1,2,3]))
+        f3=f.voronoize(1e-12)
+        ref=DataArrayDouble([0.047256836610416179,0.03980327668541684,0.039803276685416833,0.039803276685416833])
+        self.assertTrue(f3.getMesh().getMeasureField(False).getArray().isEqual(ref,1e-12))
+        self.assertTrue(f3.getArray().isEqual(DataArrayDouble([0,1,2,3]),1e-12))
+        pass
+
+    def testVoronoi3D_5(self):
+        """ Cell 0 of Barreau_Elga_V11.rmed and sslv07b.rmed. HEXA8 cut regularly into 8 parts"""
+        coo=DataArrayDouble([(0.024,0.024,1.2),(0.024,0.048,1.2),(0.048,0.024,1.2),(0.048,0.048,1.2),(0.024,0.024,1.6),(0.024,0.048,1.6),(0.048,0.024,1.6),(0.048,0.048,1.6)])
+        m=MEDCouplingUMesh("",3) ; m.setCoords(coo) ; m.allocateCells()
+        m.insertNextCell(NORM_HEXA8,[0,2,6,4,1,3,7,5])
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT) ; f.setMesh(m)
+        f.setGaussLocalizationOnType(NORM_HEXA8,[-1.0, -1.0, -1.0, -1.0, 1.0, -1.0, 1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0],[-0.577350269189626, -0.577350269189626, -0.577350269189626, -0.577350269189626, -0.577350269189626, 0.577350269189626, -0.577350269189626, 0.577350269189626, -0.577350269189626, -0.577350269189626, 0.577350269189626, 0.577350269189626, 0.577350269189626, -0.577350269189626, -0.577350269189626, 0.577350269189626, -0.577350269189626, 0.577350269189626, 0.577350269189626, 0.577350269189626, -0.577350269189626, 0.577350269189626, 0.577350269189626, 0.577350269189626],[1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0])
+        arr=DataArrayDouble(8) ; arr.iota() ; f.setArray(arr)
+        f.checkConsistencyLight()
+        #
+        vol=f.getMesh().getMeasureField(False).getIJ(0,0)
+        f2=f.voronoize(1e-12)
+        f2.checkConsistencyLight()
+        self.assertEqual(f2.getNumberOfTuples(),8)
+        volRef=vol/8
+        self.assertTrue(f2.getMesh().getMeasureField(False).getArray().isUniform(volRef,1e-12))
+        pass
+
+    def testVoronoi3D_6(self):
+        """ Cell 0 of brokenshire.med (and pace.med). TETRA10 split into 4 parts"""
+        coo=DataArrayDouble([(50.,-50.,200.0),(50.0,-30.,200.0),(30.,-50.,200.0),(50.,-50.,180.0),(50.,-40.,200.0),(40.,-50.,200.0),(50.,-50.,190.0),(40.,-40.,200.0),(50.,-40.,190.0),(40.,-50.,190.0)])
+        m=MEDCouplingUMesh("",3) ; m.setCoords(coo) ; m.allocateCells()
+        m.insertNextCell(NORM_TETRA10,[2,0,1,3,5,4,7,9,6,8])
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT) ; f.setMesh(m)
+        f.setGaussLocalizationOnType(NORM_TETRA10,[0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0.5, 0, 0, 0, 0.5, 0, 0.5, 0.5, 0.5, 0.5, 0, 0.5, 0, 0, 0.5, 0, 0.5],[0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.5854101966249685, 0.1381966011250105, 0.1381966011250105],[0.041666666666666664, 0.041666666666666664, 0.041666666666666664, 0.041666666666666664])
+        arr=DataArrayDouble(4) ; arr.iota() ; f.setArray(arr)
+        f.checkConsistencyLight()
+        f2=f.voronoize(1e-12)
+        f2.checkConsistencyLight()
+        self.assertEqual(f2.getNumberOfTuples(),4)
+        arr=f2.getMesh().getMeasureField(False).getArray()
+        self.assertTrue(f2.getMesh().getMeasureField(False).getArray().isEqual(DataArrayDouble([378.0546928833331, 318.42621348333586, 318.4262134833361, 318.4262134833278]),1e-6))
+        pass
+
+    def testVoronoi3D_7(self):
+        """ sslv07a.rmed. HEXA20 split into 27 parts """
+        coo=DataArrayDouble([(-0.5,-0.5,0.0),(-0.25,-0.5,0.0),(0.0,-0.5,0.0),(-0.5,0.0,0.0),(-0.5,-0.25,0.0),(0.0,0.0,0.0),(0.0,-0.25,0.0),(-0.25,0.0,0.0),(-0.5,-0.5,1.0),(-0.25,-0.5,1.0),(0.0,-0.5,1.0),(0.0,-0.25,1.0),(0.0,0.0,1.0),(-0.25,0.0,1.0),(-0.5,0.0,1.0),(-0.5,-0.25,1.0),(-0.5,-0.5,0.5),(0.0,-0.5,0.5),(0.0,0.0,0.5),(-0.5,0.0,0.5)])
+        m=MEDCouplingUMesh("",3) ; m.setCoords(coo) ; m.allocateCells()
+        m.insertNextCell(NORM_HEXA20,[0,3,5,2,8,14,12,10,4,7,6,1,15,13,11,9,16,19,18,17])
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT) ; f.setMesh(m)
+        f.setGaussLocalizationOnType(NORM_HEXA20,
+                                     [-1,-1,-1,-1,1,-1,1,1,-1,1,-1,-1,-1,-1,1,-1,1,1,1,1,1,1,-1,1,-1,0,-1,0,1,-1,1,0,-1,0,-1,-1,-1,0,1,0,1,1,1,0,1,0,-1,1,-1,-1,0,-1,1,0,1,1,0,1,-1,0],
+                                     [-0.774597,-0.774597,-0.774597,-0.774597,-0.774597,0,-0.774597,-0.774597,0.774597,-0.774597,0,-0.774597,-0.774597,0,0,-0.774597,0,0.774597,-0.774597,0.774597,-0.774597,-0.774597,0.774597,0,-0.774597,0.774597,0.774597,0,-0.774597,-0.774597,0,-0.774597,0,0,-0.774597,0.774597,0,0,-0.774597,0,0,0,0,0,0.774597,0,0.774597,-0.774597,0,0.774597,0,0,0.774597,0.774597,0.774597,-0.774597,-0.774597,0.774597,-0.774597,0,0.774597,-0.774597,0.774597,0.774597,0,-0.774597,0.774597,0,0,0.774597,0,0.774597,0.774597,0.774597,-0.774597,0.774597,0.774597,0,0.774597,0.774597,0.774597],
+                                     [0.171468,0.274348,0.171468,0.274348,0.438957,0.274348,0.171468,0.274348,0.171468,0.274348,0.438957,0.274348,0.438957,0.702332,0.438957,0.274348,0.438957,0.274348,0.171468,0.274348,0.171468,0.274348,0.438957,0.274348,0.171468,0.274348,0.171468])
+        arr=DataArrayDouble(27) ; arr.iota() ; f.setArray(arr)
+        f.checkConsistencyLight()
+        f2=f.voronoize(1e-12)
+        a=0.007187820185770747 ; b=0.0090870678008658 ; c=0.011488156225861077 ; d=0.014523687548277797
+        ref=DataArrayDouble(27) ; ref[::2]=a ; ref[1::2]=b
+        ref[[4,10,12,14,16,22]]=c ; ref[13]=d  # 6 cells 4,10,12,14,16,22 are the 6 cells boarding the most inner cell 13
+        #
+        self.assertTrue(f2.getMesh().getMeasureField(False).getArray().isEqual(ref,1e-7))
+        pass
+
+    def testConvertQuadToLin4Gauss_1(self):
+        coo=DataArrayDouble([0.0,1.0,0.0,0.0,0.0,0.0,0.0,0.0,1.0,1.0,0.0,0.0,0.0,0.5,0.0,0.0,0.0,0.5,0.0,0.5,0.5,0.5,0.5,0.0,0.5,0.0,0.0,0.5,0.0,0.5],10,3)
+        m=MEDCouplingUMesh("mesh",3)
+        m.setCoords(coo) ; m.allocateCells()
+        m.insertNextCell(NORM_TETRA10,[0,1,2,3,4,5,6,7,8,9])
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT)
+        f.setMesh(m) ; f.setName("field")
+        aaaa=[0.0,1.0,0.0,0.0,0.0,0.0,0.0,0.0,1.0,1.0,0.0,0.0,0.0,0.5,0.0,0.0,0.0,0.5,0.0,0.5,0.5,0.5,0.5,0.0,0.5,0.0,0.0,0.5,0.0,0.5]
+        bbbb=[0.1381966011250105,0.1381966011250105,0.1381966011250105,0.1381966011250105,0.1381966011250105,0.5854101966249685,0.1381966011250105,0.5854101966249685,0.1381966011250105,0.5854101966249685,0.1381966011250105,0.1381966011250105]
+        cccc=[0.041667,0.041667,0.041667,0.041667]
+        f.setGaussLocalizationOnType(NORM_TETRA10,aaaa,bbbb,cccc)
+        f.setArray(DataArrayDouble([0,1,2,3]))
+        f.setTime(1.,2,3)
+        #
+        mcpy=m.deepCopy() ; mcpy.convertQuadraticCellsToLinear() ; mcpy.zipCoords()
+        #
+        f2=f.convertQuadraticCellsToLinear()
+        f2.checkConsistencyLight()
+        self.assertTrue(f2.getMesh().isEqual(mcpy,1e-12))
+        self.assertTrue(f2.getArray().isEqual(DataArrayDouble([0,1,2,3]),1e-12))
+        self.assertEqual(f2.getNbOfGaussLocalization(),1)
+        gl=f2.getGaussLocalization(0)
+        self.assertEqual(gl.getType(),NORM_TETRA4)
+        self.assertTrue(DataArrayDouble(gl.getRefCoords()).isEqual(DataArrayDouble([0.0,1.0,0.0,0.0,0.0,0.0,0.0,0.0,1.0,1.0,0.0,0.0]),1e-12))
+        self.assertTrue(DataArrayDouble(gl.getGaussCoords()).isEqual(DataArrayDouble(bbbb),1e-12))
+        self.assertTrue(DataArrayDouble(gl.getWeights()).isEqual(DataArrayDouble(cccc),1e-12))
+        self.assertEqual(f2.getName(),"field")
+        self.assertEqual(f2.getTime(),[1.,2,3])
+        pass
+
+    def testDADCumSum1(self):
+        d=DataArrayDouble([3.,2.,4.,5.])
+        self.assertTrue(d.cumSum().isEqual(DataArrayDouble([0.,3.,5.,9.,14.]),1e-12))
+        d2=DataArrayDouble([])
+        self.assertTrue(d2.cumSum().isEqual(DataArrayDouble([0.]),1e-12))
+        d.rearrange(2)
+        self.assertRaises(InterpKernelException,d.cumSum)
+        pass
+
+    def testDAIFromLinkedListOfPairToList1(self):
+        d=DataArrayInt([(5,7),(7,3),(3,12),(12,17)])
+        zeRes=DataArrayInt([5,7,3,12,17])
+        self.assertTrue(d.fromLinkedListOfPairToList().isEqual(zeRes))
+        d.rearrange(1)
+        self.assertRaises(InterpKernelException,d.fromLinkedListOfPairToList)
+        d.rearrange(2)
+        self.assertTrue(d.fromLinkedListOfPairToList().isEqual(zeRes))
+        d2=DataArrayInt([(5,7)])
+        self.assertTrue(d2.fromLinkedListOfPairToList().isEqual(DataArrayInt([5,7])))
+        d3=DataArrayInt([(5,7),(7,3),(4,12),(12,17)])
+        self.assertRaises(InterpKernelException,d3.fromLinkedListOfPairToList) # not a linked list of pair
+        d4=DataArrayInt([(5,7),(7,3),(12,3),(12,17)])
+        self.assertRaises(InterpKernelException,d4.fromLinkedListOfPairToList) # not a linked list of pair, but can be repaired !
+        d4.sortEachPairToMakeALinkedList()
+        self.assertTrue(d4.fromLinkedListOfPairToList().isEqual(zeRes))
+        pass
+
+    def testUMeshExplodeIntoEdges1(self):
+        m=MEDCouplingCMesh() ; arr=DataArrayDouble(5) ; arr.iota() ; m.setCoords(arr,arr,arr) ; m=m.buildUnstructured()
+        self.assertEqual(m.getMeshDimension(),3)
+        a0,a1,a2,a3,a4=m.explodeIntoEdges()
+        b0,b1,b2,b3,b4=m.explode3DMeshTo1D()
+        self.assertTrue(a0.isEqual(b0,1e-12))
+        self.assertTrue(a1.isEqual(b1)) ; self.assertTrue(a2.isEqual(b2)) ; self.assertTrue(a3.isEqual(b3)) ; self.assertTrue(a4.isEqual(b4))
+        #
+        m=MEDCouplingCMesh() ; arr=DataArrayDouble(5) ; arr.iota() ; m.setCoords(arr,arr) ; m=m.buildUnstructured()
+        self.assertEqual(m.getMeshDimension(),2)
+        a0,a1,a2,a3,a4=m.explodeIntoEdges()
+        b0,b1,b2,b3,b4=m.buildDescendingConnectivity()
+        self.assertTrue(a0.isEqual(b0,1e-12))
+        self.assertTrue(a1.isEqual(b1)) ; self.assertTrue(a2.isEqual(b2)) ; self.assertTrue(a3.isEqual(b3)) ; self.assertTrue(a4.isEqual(b4))
+        pass
+
+    def testUMeshComputeEnlargedNeighborsOfNodes(self):
+        m=MEDCouplingCMesh() ; arr=DataArrayDouble(4) ; arr.iota() ; m.setCoords(arr,arr) ; m=m.buildUnstructured()
+        a,b=m.computeEnlargedNeighborsOfNodes()
+        aExp=DataArrayInt([1,4,5,0,2,4,5,6,1,3,5,6,7,2,6,7,0,1,5,8,9,0,1,2,4,6,8,9,10,1,2,3,5,7,9,10,11,2,3,6,10,11,4,5,9,12,13,4,5,6,8,10,12,13,14,5,6,7,9,11,13,14,15,6,7,10,14,15,8,9,13,8,9,10,12,14,9,10,11,13,15,10,11,14])
+        bExp=DataArrayInt([0,3,8,13,16,21,29,37,42,47,55,63,68,71,76,81,84])
+        self.assertTrue(a.isEqual(aExp))
+        self.assertTrue(b.isEqual(bExp))
+        m2=m[[1,2,3]]
+        c,d=m2.computeEnlargedNeighborsOfNodes()
+        cExp=DataArrayInt([2,5,6,1,3,5,6,7,2,6,7,5,8,9,1,2,4,6,8,9,1,2,3,5,7,2,3,6,4,5,9,4,5,8])
+        dExp=DataArrayInt([0,0,3,8,11,14,20,25,28,31,34,34,34,34,34,34,34])
+        self.assertTrue(c.isEqual(cExp))
+        self.assertTrue(d.isEqual(dExp))
+        pass
+
+    def testDAIfindIdsExt1(self):
+        d=DataArrayInt([4,6,-2,3,7,0,10])
+        self.assertTrue(d.findIdsGreaterOrEqualTo(3).isEqual(DataArrayInt([0,1,3,4,6])))
+        self.assertTrue(d.findIdsGreaterThan(3).isEqual(DataArrayInt([0,1,4,6])))
+        self.assertTrue(d.findIdsLowerThan(3).isEqual(DataArrayInt([2,5])))
+        self.assertTrue(d.findIdsLowerOrEqualTo(3).isEqual(DataArrayInt([2,3,5])))
+        pass
+
+    def testDAFacto1(self):
+        """Test focused of new wrapped methods for MEDCouplingFieldInt thanks to code factorization."""
+        d=DataArrayDouble(7) ; d.iota()
+        m=MEDCouplingUMesh.Build1DMeshFromCoords(d)
+        f=MEDCouplingFieldInt(ON_CELLS) ; f.setMesh(m) ; arr=DataArrayInt32(6) ; arr.iota() ; f.setArray(arr) ; f.checkConsistencyLight()
+        f_0=f[::2] # test is here
+        self.assertTrue(f_0.getArray().isEqual(DataArrayInt32([0,2,4])))
+        self.assertTrue(f_0.getMesh().isEqual(m[[0,2,4]],1e-12))
+        #
+        f2=MEDCouplingFieldInt(ON_NODES) ; f2.setMesh(m) ; arr=DataArrayInt32(7) ; arr.iota() ; f2.setArray(arr) ; f2.checkConsistencyLight()
+        f_1=f2[::2] # test is here
+        self.assertTrue(f_1.getArray().isEqual(DataArrayInt32([0,1,2,3,4,5])))
+        m_1=m[[0,2,4]] ; m_1.zipCoords()
+        self.assertTrue(f_1.getMesh().isEqual(m_1,1e-12))
+        pass
+
+    def testFieldFloatIsOnStage1(self):
+        """ My first test with field int."""
+        m=MEDCouplingCMesh()
+        m.setName("mesh")
+        arrX=DataArrayDouble([0,1,2,3])
+        m.setCoords(arrX,arrX)
+        f=MEDCouplingFieldFloat(ON_CELLS)
+        f.setMesh(m)
+        arr=DataArrayFloat(8) ; arr.iota() ;f.setArray(arr)
+        self.assertRaises(InterpKernelException,f.checkConsistencyLight)
+        arr=DataArrayFloat(9) ; arr.iota() ;f.setArray(arr)
+        f.checkConsistencyLight()
+        f.setTimeUnit("ms")
+        self.assertEqual(f.getTimeUnit(),"ms")
+        f.setTime(3.2,5,6)
+        a,b,c=f.getTime()
+        self.assertEqual(b,5)
+        self.assertEqual(c,6)
+        self.assertEqual(a,3.2,12)
+        pass
+
+    def testFieldFloatIsOnStage2(self):
+        """ Very important test to check that isEqual of MEDCouplingFieldFloat is OK !"""
+        m1=MEDCouplingCMesh() ; m1.setCoords(DataArrayDouble([0,1,2,3]),DataArrayDouble([0,1,2,3,4]))
+        m1=m1.buildUnstructured() ; m1.setName("mesh")
+        f1=MEDCouplingFieldFloat(ON_CELLS) ; f1.setMesh(m1)
+        arr1=DataArrayFloat([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr1.setInfoOnComponents(["aa","bbb"])
+        f1.setArray(arr1) ; f1.setName("f1") ; f1.setTime(2.,3,4)
+        #
+        m2=MEDCouplingCMesh() ; m2.setCoords(DataArrayDouble([0,1,2,3]),DataArrayDouble([0,1,2,3,4]))
+        m2=m2.buildUnstructured() ; m2.setName("mesh")
+        f2=MEDCouplingFieldFloat(ON_CELLS) ; f2.setMesh(m2)
+        arr2=DataArrayFloat([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr2.setInfoOnComponents(["aa","bbb"])
+        f2.setArray(arr2) ; f2.setName("f1") ; f2.setTime(2.,3,4)
+        #
+        self.assertTrue(f1.isEqual(f2,1e-12,0.))
+        f1.getArray()[:]*=2
+        self.assertTrue(not f1.isEqual(f2,1e-12,0.))
+        self.assertTrue(not f1.isEqualWithoutConsideringStr(f2,1e-12,0.))
+        f1.getArray()[:]/=2
+        self.assertTrue(f1.isEqual(f2,1e-12,0.))
+        #
+        f1.setName("F1")
+        self.assertTrue(not f1.isEqual(f2,1e-12,0.))
+        f1.setName("f1")
+        self.assertTrue(f1.isEqual(f2,1e-12,0.))
+        #
+        f1.getArray().setInfoOnComponents(["aa","bbbb"])
+        self.assertTrue(not f1.isEqual(f2,1e-12,0.))
+        self.assertTrue(f1.isEqualWithoutConsideringStr(f2,1e-12,0.))
+        f1.getArray().setInfoOnComponents(["aa","bbb"])
+        self.assertTrue(f1.isEqual(f2,1e-12,0.))
+        #
+        f3=f2.deepCopy()
+        self.assertTrue(f1.isEqual(f3,1e-12,0.))
+        #
+        for fd,expected in ((ON_NODES,False),(ON_CELLS,True)):
+            f4=MEDCouplingFieldFloat(fd) ; f4.setMesh(m2) ; f4.setTime(2.,3,4)
+            arr4=DataArrayFloat([(0,1),(2,3),(4,5),(6,7),(8,9),(10,11),(12,13),(14,15),(16,17),(18,19),(20,21),(22,23)]) ; arr4.setInfoOnComponents(["aa","bbb"])
+            f4.setArray(arr4) ; f4.setName("f1")
+            self.assertEqual(f1.isEqual(f4,1e-12,0.),expected)
+            pass
+        pass
+
+    def testLTGTDAD1(self):
+        d=DataArrayDouble(10) ; d.iota()
+        self.assertTrue(d.findIdsLowerThan(0).empty())
+        self.assertTrue(d.findIdsLowerThan(1).isEqual(DataArrayInt([0])))
+        d-=5.
+        self.assertTrue(d.findIdsStrictlyNegative().isEqual(DataArrayInt([0,1,2,3,4])))
+        self.assertTrue(d.findIdsGreaterThan(0.).isEqual(DataArrayInt([6,7,8,9])))
+        self.assertTrue(d.convertToFloatArr().isEqual(DataArrayFloat([-5,-4,-3,-2,-1,0,1,2,3,4]),1e-7))
+        self.assertTrue(d.convertToFloatArr().convertToDblArr().isEqual(d,1e-12))
+        pass
+
+    def testMapII1(self):
+        """ Test optimized maps for renumbering. Typical usage local to global in parallel mode"""
+        d=DataArrayInt([1003,1007])
+        m=d.invertArrayN2O2O2NOptimized()
+        d2=DataArrayInt([1003,1003,1007,1003,1007])
+        d2.transformWithIndArr(m)
+        self.assertTrue(d2.isEqual(DataArrayInt([0,0,1,0,1])))
+        pass
+
+    def testDAICheckUniformAndGuess1(self):
+        d=DataArrayInt([3,3],1,2)
+        self.assertRaises(InterpKernelException,d.checkUniformAndGuess)# non single compo
+        d=DataArrayInt([])
+        self.assertRaises(InterpKernelException,d.checkUniformAndGuess)# empty
+        d=DataArrayInt()
+        self.assertRaises(InterpKernelException,d.checkUniformAndGuess)# non allocated
+        d=DataArrayInt([3,3,3])
+        self.assertEqual(3,d.checkUniformAndGuess())
+        d=DataArrayInt([7])
+        self.assertEqual(7,d.checkUniformAndGuess())
+        d=DataArrayInt([3,4,3])
+        self.assertRaises(InterpKernelException,d.checkUniformAndGuess)# non uniform
+        pass
+
+    def testUMComputePlaneEquationOf3DFaces1(self):
+        """ Consequence of an invalid traduction of matrix inversion transposition."""
+        m=MEDCoupling1SGTUMesh("msh",NORM_QUAD4)
+        m.setCoords(DataArrayDouble([(0,0,0),(1,0,0),(2,0,0),(0,2,0),(1,2,0),(2,2,0),(0,4,0),(1,4,0),(2,4,0),(0,0,3),(1,0,3),(2,0,3),(0,2,3),(1,2,3),(2,2,3),(0,4,3),(1,4,3),(2,4,3)]))
+        m.setNodalConnectivity(DataArrayInt([0,1,4,3,9,12,13,10,0,9,10,1,1,10,13,4,4,13,12,3,3,12,9,0,1,2,5,4,10,13,14,11,1,10,11,2,2,11,14,5,5,14,13,4,3,4,7,6,12,15,16,13,4,13,16,7,7,16,15,6,6,15,12,3,4,5,8,7,13,16,17,14,5,14,17,8,8,17,16,7]))
+        m=m.buildUnstructured()
+        ref=DataArrayDouble([(0,0,1,0),(0,0,1,-3),(0,1,0,0),(1,0,0,-1),(0,1,0,-2),(1,0,0,0),(0,0,1,0),(0,0,1,-3),(0,1,0,0),(1,0,0,-2),(0,1,0,-2),(0,0,1,0),(0,0,1,-3),(1,0,0,-1),(0,1,0,-4),(1,0,0,0),(0,0,1,0),(0,0,1,-3),(1,0,0,-2),(0,1,0,-4)])
+        res=m.computePlaneEquationOf3DFaces()
+        self.assertTrue(res.isEqual(ref,1e-12))
+        pass
+
+    def testBugInComputationOfEqOfPlane1(self):
+        coo=DataArrayDouble([-1.0, 1.0, -0.3872983455657959, -1.0, 1.0, 0.3872983455657959, -1.0, 1.0, 0.693649172782898, 1.0, 1.0, 0.693649172782898, 1.0, 1.0, 0.3872983455657959, 1.0, 1.0, -0.3872983455657959],6,3)
+        m=MEDCouplingUMesh("",2)
+        m.setCoords(coo)
+        m.allocateCells()
+        m.insertNextCell(NORM_POLYGON,[0,1,2,3,4,5])
+        self.assertTrue(m.computePlaneEquationOf3DFaces().isEqual(DataArrayDouble([0,1,0,-1],1,4),1e-12))
+        pass
+
+    def testSimplifyPolyhedra(self):
+        mesh = MEDCouplingUMesh('mesh', 3)
+        coo = DataArrayDouble([(-0.01225,-0.0212176,0.02),(-0.00634107,-0.0236652,0.02),(1.50019e-18,-0.0245,0.02),(0.00634107,-0.0236652,0.02),(0.01225,-0.0212176,0.02),(-0.0153864,-0.02665,0),(-0.00714085,-0.02665,0),(1.63184e-18,-0.02665,0),(0.00714085,-0.02665,0),(0.0153864,-0.02665,0),(-0.00714085,-0.02665,0.0101475),(1.63184e-18,-0.02665,0.013145),(0.00714085,-0.02665,0.0101475),(-0.013,-0.0225167,0.02),(-0.0067293,-0.0251141,0.02),(1.59204e-18,-0.026,0.02),(0.0067293,-0.0251141,0.02),(0.013,-0.0225167,0.02),(-0.0161658,-0.028,0),(-0.00750258,-0.028,0),(1.71451e-18,-0.028,0),(0.00750258,-0.028,0),(0.0161658,-0.028,0),(-0.00750258,-0.028,0.0105625),(1.71451e-18,-0.028,0.0136825),(0.00750258,-0.028,0.0105625)])
+        mesh.setCoords(coo)
+        c = DataArrayInt([31, 13, 14, 15, 16, 17, 4, 3, 2, 1, 0, -1, 18, 5, 6, 7, 8, 9, 22, 21, 20, 19, -1, 19, 23, 18, -1, 23, 14, 13, 18, -1, 20, 24, 23, 19, -1, 24, 15, 14, 23, -1, 21, 25, 24, 20, -1, 25, 16, 15, 24, -1, 22, 25, 21, -1, 22, 17, 16, 25, -1, 9, 4, 17, 22, -1, 8, 12, 9, -1, 12, 3, 4, 9, -1, 7, 11, 12, 8, -1, 11, 2, 3, 12, -1, 6, 10, 11, 7, -1, 10, 1, 2, 11, -1, 5, 10, 6, -1, 5, 0, 1, 10, -1, 18, 13, 0, 5])
+        cI = DataArrayInt([0, 108])
+        mesh.setConnectivity(c, cI)
+        mesh.simplifyPolyhedra(1.0e-8)
+        c, cI = mesh.getNodalConnectivity(), mesh.getNodalConnectivityIndex()
+        tgt_c = DataArrayInt([31, 23, 18, 19, 20, 21, 22, 25, 24, -1, 12, 9, 8, 7, 6, 5, 10, 11, -1, 13, 14, 15, 16, 17, 4, 3, 2, 1, 0, -1, 18, 5, 6, 7, 8, 9, 22, 21, 20, 19, -1, 23, 14, 13, 18, -1, 24, 15, 14, 23, -1, 25, 16, 15, 24, -1, 22, 17, 16, 25, -1, 9, 4, 17, 22, -1, 12, 3, 4, 9, -1, 11, 2, 3, 12, -1, 10, 1, 2, 11, -1, 5, 0, 1, 10, -1, 18, 13, 0, 5])
+        tgt_cI = DataArrayInt([0, 90])
+        self.assertEqual(c.getValues(), tgt_c.getValues())
+        self.assertEqual(cI.getValues(), tgt_cI.getValues())
+        pass
+
     pass
 
 if __name__ == '__main__':