Index: vtkQuadraticHexahedron.cxx
===================================================================
RCS file: /cvsroot/VTK/VTK/Filtering/vtkQuadraticHexahedron.cxx,v
retrieving revision 1.10
diff -u -r1.10 vtkQuadraticHexahedron.cxx
--- vtkQuadraticHexahedron.cxx	18 May 2007 13:55:22 -0000	1.10
+++ vtkQuadraticHexahedron.cxx	10 Aug 2007 13:56:32 -0000
@@ -24,7 +24,7 @@
 #include "vtkQuadraticQuad.h"
 #include "vtkPoints.h"
 
-vtkCxxRevisionMacro(vtkQuadraticHexahedron, "$Revision: 1.10 $");
+vtkCxxRevisionMacro(vtkQuadraticHexahedron, "$Revision: 1.8 $");
 vtkStandardNewMacro(vtkQuadraticHexahedron);
 
 //----------------------------------------------------------------------------
@@ -171,7 +171,7 @@
     {
     this->CellData->CopyData(inCd,cellId,i);
     }
-  
+
   //Interpolate new values
   double p[3];
   for ( numMidPts=0; numMidPts < 7; numMidPts++ )
@@ -696,6 +696,11 @@
   derivs[57] = -0.5*t*rp*sm;
   derivs[58] = -0.5*t*rp*sp;
   derivs[59] = -0.5*t*rm*sp;
+
+  // we compute derivatives in in [-1; 1] but we need them in [ 0; 1]  
+  for(int i = 0; i < 60; i++)
+  	derivs[i] *= 2;  
+
 }
 
 //----------------------------------------------------------------------------