Merge topic 'fix-HTG-missing-interfaces' into release

a8ef4b05 Fixed an initialized-yet-unused-variable warning on Windows
62cf7516 Modified non-regression test for interface reconstruction.
a4cc7836

 Fixed issues with the computation of material interfaces in HTG
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3609

Common/DataModel/vtkHyperTreeGrid.h

@@ -720,8 +720,8 @@ protected:
   bool InitPureMaterialMask;
 
   bool HasInterface;
-  char *InterfaceNormalsName;
-  char *InterfaceInterceptsName;
+  char* InterfaceNormalsName;
+  char* InterfaceInterceptsName;
 
   vtkDataArray* XCoordinates;
   vtkDataArray* YCoordinates;

Filters/HyperTree/Testing/Cxx/CMakeLists.txt

@@ -20,6 +20,7 @@ vtk_add_test_cxx(${vtk-module}CxxTests tests
   TestHyperTreeGridBinary2DContourMaterial.cxx
   TestHyperTreeGridBinary2DDepthLimiter.cxx
   TestHyperTreeGridBinary2DDepthLimiterMaterial.cxx
+  TestHyperTreeGridBinary2DInterfaceMaterial.cxx
   TestHyperTreeGridBinary2DMaterial.cxx
   TestHyperTreeGridBinary2DMaterialIJK.cxx
   TestHyperTreeGridBinary2DThreshold.cxx

Filters/HyperTree/Testing/Cxx/TestHyperTreeGridBinary2DInterfaceMaterial.cxx

+/*==================================================================
+
+  Program:   Visualization Toolkit
+  Module:    TestHyperTreeGridBinary2DInterfaceMaterial.cxx
+
+  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
+  All rights reserved.
+  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notice for more information.
+
+===================================================================*/
+// .SECTION Thanks
+// This test was written by Philippe Pebay,  NexGen Analytics 2017
+// This work was supported by Commissariat a l'Energie Atomique (CEA/DIF)
+
+#include "vtkHyperTreeGrid.h"
+#include "vtkHyperTreeGridGeometry.h"
+#include "vtkHyperTreeGridSource.h"
+
+#include "vtkCamera.h"
+#include "vtkCellData.h"
+#include "vtkNew.h"
+#include "vtkPointData.h"
+#include "vtkPolyData.h"
+#include "vtkPolyDataMapper.h"
+#include "vtkProperty.h"
+#include "vtkRegressionTestImage.h"
+#include "vtkRenderer.h"
+#include "vtkRenderWindow.h"
+#include "vtkRenderWindowInteractor.h"
+
+int TestHyperTreeGridBinary2DInterfaceMaterial( int argc, char* argv[] )
+{
+  // Hyper tree grid
+  vtkNew<vtkHyperTreeGridSource> htGrid;
+  htGrid->SetMaximumLevel( 6 );
+  htGrid->SetDimension( 2 );
+  htGrid->SetOrientation( 2 ); // in xy plane
+  htGrid->SetGridSize( 2, 3, 1 );
+  htGrid->SetGridScale( 1.5, 1., 10. );  // this is to test that orientation fixes scale
+  htGrid->SetBranchFactor( 2 );
+  htGrid->SetDescriptor( "RRRRR.|.... .R.. RRRR R... R...|.R.. ...R ..RR .R.. R... .... ....|.... ...R ..R. .... .R.. R...|.... .... .R.. ....|...." );
+  htGrid->UseMaterialMaskOn();
+  htGrid->SetDescriptor( "RRRRR.|.... .R.. RRRR R... R...|.R.. ...R ..RR .R.. R... .... ....|.... ...R ..R. .... .R.. R...|.... .... .R.. ....|...." );
+  htGrid->SetMaterialMask( "111111|0000 1111 1111 1111 1111|1111 0001 0111 0101 1011 1111 0111|1111 0111 1111 1111 1111 1111|1111 1111 1111 1111|1111" );
+  htGrid->GenerateInterfaceFieldsOn();
+  htGrid->Update();
+  vtkHyperTreeGrid* H = vtkHyperTreeGrid::SafeDownCast( htGrid->GetOutput() );
+  H->SetHasInterface( 1 );
+  char normalsName[] = "Normals";
+  H->SetInterfaceNormalsName( normalsName );
+  char interceptsName[] = "Intercepts";
+  H->SetInterfaceInterceptsName( interceptsName );
+
+  // Modify intercepts array
+  vtkDataArray* interArray = vtkDataSet::SafeDownCast( htGrid->GetOutput() )->GetPointData()->GetArray( "Intercepts" );
+  for ( vtkIdType i = 0; i < interArray->GetNumberOfTuples(); ++ i )
+  {
+    interArray->SetTuple3( i, -.25, -.5, -1. );
+  }
+
+  // Geometries
+  vtkNew<vtkHyperTreeGridGeometry> geometry1;
+  geometry1->SetInputConnection( htGrid->GetOutputPort() );
+  geometry1->Update();
+  vtkPolyData* pd = geometry1->GetPolyDataOutput();
+  vtkNew<vtkHyperTreeGridGeometry> geometry2;
+  geometry2->SetInputConnection( htGrid->GetOutputPort() );
+
+  // Mappers
+  vtkMapper::SetResolveCoincidentTopologyToPolygonOffset();
+  vtkNew<vtkPolyDataMapper> mapper1;
+  mapper1->SetInputConnection( geometry1->GetOutputPort() );
+  mapper1->ScalarVisibilityOff();
+  vtkNew<vtkPolyDataMapper> mapper2;
+  mapper2->SetInputConnection( geometry2->GetOutputPort() );
+  mapper2->SetScalarRange( pd->GetCellData()->GetScalars()->GetRange() );
+
+  // Actors
+  vtkNew<vtkActor> actor1;
+  actor1->SetMapper( mapper1 );
+  actor1->GetProperty()->SetRepresentationToWireframe();
+  actor1->GetProperty()->SetColor( .7, .7, .7 );
+  vtkNew<vtkActor> actor2;
+  actor2->SetMapper( mapper2 );
+
+  // Camera
+  double bd[6];
+  pd->GetBounds( bd );
+  vtkNew<vtkCamera> camera;
+  camera->SetClippingRange( 1., 100. );
+  camera->SetFocalPoint( pd->GetCenter() );
+  camera->SetPosition( .5 * bd[1], .5 * bd[3], 6. );
+
+  // Renderer
+  vtkNew<vtkRenderer> renderer;
+  renderer->SetActiveCamera( camera );
+  renderer->SetBackground( 1., 1., 1. );
+  renderer->AddActor( actor1 );
+  renderer->AddActor( actor2 );
+
+  // Render window
+  vtkNew<vtkRenderWindow> renWin;
+  renWin->AddRenderer( renderer );
+  renWin->SetSize( 400, 400 );
+  renWin->SetMultiSamples( 0 );
+
+  // Interactor
+  vtkNew<vtkRenderWindowInteractor> iren;
+  iren->SetRenderWindow( renWin );
+
+  // Render and test
+  renWin->Render();
+
+  int retVal = vtkRegressionTestImageThreshold( renWin, 70 );
+  if ( retVal == vtkRegressionTester::DO_INTERACTOR )
+  {
+    iren->Start();
+  }
+
+  return !retVal;
+}

Filters/HyperTree/Testing/Cxx/TestHyperTreeGridBinary2DMaterial.cxx

@@ -38,10 +38,10 @@ int TestHyperTreeGridBinary2DMaterial( int argc, char* argv[] )
   vtkNew<vtkHyperTreeGridSource> htGrid;
   int maxLevel = 6;
   htGrid->SetMaximumLevel( maxLevel );
-  htGrid->SetGridSize( 2, 3, 1 );
-  htGrid->SetGridScale( 1.5, 1., 10. );  // this is to test that orientation fixes scale
   htGrid->SetDimension( 2 );
   htGrid->SetOrientation( 2 ); // in xy plane
+  htGrid->SetGridSize( 2, 3, 1 );
+  htGrid->SetGridScale( 1.5, 1., 10. );  // this is to test that orientation fixes scale
   htGrid->SetBranchFactor( 2 );
   htGrid->UseMaterialMaskOn();
   htGrid->SetDescriptor( "RRRRR.|.... .R.. RRRR R... R...|.R.. ...R ..RR .R.. R... .... ....|.... ...R ..R. .... .R.. R...|.... .... .R.. ....|...." );

Filters/HyperTree/Testing/Cxx/TestHyperTreeGridBinary2DVector.cxx

@@ -14,6 +14,7 @@
 ===================================================================*/
 // .SECTION Thanks
 // This test was written by Philippe Pebay, 2016
+// This test was modified by Philippe Pebay, NexGen Analytics 2017
 // This work was supported by Commissariat a l'Energie Atomique (CEA/DIF)
 
 #include "vtkHyperTreeGrid.h"
@@ -38,21 +39,20 @@ int TestHyperTreeGridBinary2DVector( int argc, char* argv[] )
 {
   // Hyper tree grid
   vtkNew<vtkHyperTreeGridSource> htGrid;
-  int maxLevel = 6;
-  htGrid->SetMaximumLevel( maxLevel );
+  htGrid->SetMaximumLevel( 6 );
+  htGrid->SetOrientation( 2 ); // in xy plane
+  htGrid->SetBranchFactor( 2 );
   htGrid->SetGridSize( 2, 3, 1 );
   htGrid->SetGridScale( 1.5, 1., 10. );  // this is to test that orientation fixes scale
   htGrid->SetDimension( 2 );
-  htGrid->SetOrientation( 2 ); // in xy plane
-  htGrid->SetBranchFactor( 2 );
   htGrid->SetDescriptor( "RRRRR.|.... .R.. RRRR R... R...|.R.. ...R ..RR .R.. R... .... ....|.... ...R ..R. .... .R.. R...|.... .... .R.. ....|...." );
-  htGrid->GenerateVectorFieldOn();
+  htGrid->GenerateInterfaceFieldsOn();
   htGrid->Update();
   vtkHyperTreeGrid* H = vtkHyperTreeGrid::SafeDownCast( htGrid->GetOutput() );
   H->SetHasInterface( 1 );
-  char normalsName[] = "Vector";
+  char normalsName[] = "Normals";
   H->SetInterfaceNormalsName( normalsName );
-  char interceptsName[] = "Depth";
+  char interceptsName[] = "Intercepts";
   H->SetInterfaceInterceptsName( interceptsName );
 
   // Cell centers

Filters/HyperTree/Testing/Cxx/TestHyperTreeGridBinary2DVectorAxisReflectionXCenter.cxx

@@ -14,6 +14,7 @@
 ===================================================================*/
 // .SECTION Thanks
 // This test was written by Philippe Pebay, 2016
+// This test was modified by Philippe Pebay, NexGen Analytics 2017
 // This work was supported by Commissariat a l'Energie Atomique (CEA/DIF)
 
 #include "vtkHyperTreeGrid.h"
@@ -39,20 +40,21 @@ int TestHyperTreeGridBinary2DVectorAxisReflectionXCenter( int argc, char* argv[]
 {
   // Hyper tree grid
   vtkNew<vtkHyperTreeGridSource> htGrid;
-  int maxLevel = 6;
-  htGrid->SetMaximumLevel( maxLevel );
-  htGrid->SetGridSize( 2, 3, 1 );
-  htGrid->SetGridScale( 1.5, 1., 10. );  // this is to test that orientation fixes scale
+  htGrid->SetMaximumLevel( 6 );
   htGrid->SetDimension( 2 );
   htGrid->SetOrientation( 2 ); // in xy plane
+  htGrid->SetGridSize( 2, 3, 1 );
+  htGrid->SetGridScale( 1.5, 1., 10. );  // this is to test that orientation fixes scale
   htGrid->SetBranchFactor( 2 );
   htGrid->SetDescriptor( "RRRRR.|.... .R.. RRRR R... R...|.R.. ...R ..RR .R.. R... .... ....|.... ...R ..R. .... .R.. R...|.... .... .R.. ....|...." );
-  htGrid->GenerateVectorFieldOn();
+  htGrid->GenerateInterfaceFieldsOn();
   htGrid->Update();
   vtkHyperTreeGrid* H = vtkHyperTreeGrid::SafeDownCast( htGrid->GetOutput() );
   H->SetHasInterface( 1 );
-  H->SetInterfaceNormalsName( "Vector" );
-  H->SetInterfaceInterceptsName( "Depth" );
+  char normalsName[] = "Normals";
+  H->SetInterfaceNormalsName( normalsName );
+  char interceptsName[] = "Intercepts";
+  H->SetInterfaceInterceptsName( interceptsName );
 
   // Axis reflection
   vtkNew<vtkHyperTreeGridAxisReflection> reflection;

Filters/HyperTree/Testing/Cxx/TestHyperTreeGridBinary2DVectorAxisReflectionYCenter.cxx

@@ -14,6 +14,7 @@
 ===================================================================*/
 // .SECTION Thanks
 // This test was written by Philippe Pebay, 2016
+// This test was modified by Philippe Pebay, NexGen Analytics 2017
 // This work was supported by Commissariat a l'Energie Atomique (CEA/DIF)
 
 #include "vtkHyperTreeGrid.h"
@@ -39,21 +40,20 @@ int TestHyperTreeGridBinary2DVectorAxisReflectionYCenter( int argc, char* argv[]
 {
   // Hyper tree grid
   vtkNew<vtkHyperTreeGridSource> htGrid;
-  int maxLevel = 6;
-  htGrid->SetMaximumLevel( maxLevel );
-  htGrid->SetGridSize( 2, 3, 1 );
-  htGrid->SetGridScale( 1.5, 1., 10. );  // this is to test that orientation fixes scale
+  htGrid->SetMaximumLevel( 6 );
   htGrid->SetDimension( 2 );
   htGrid->SetOrientation( 2 ); // in xy plane
+  htGrid->SetGridSize( 2, 3, 1 );
+  htGrid->SetGridScale( 1.5, 1., 10. );  // this is to test that orientation fixes scale
   htGrid->SetBranchFactor( 2 );
   htGrid->SetDescriptor( "RRRRR.|.... .R.. RRRR R... R...|.R.. ...R ..RR .R.. R... .... ....|.... ...R ..R. .... .R.. R...|.... .... .R.. ....|...." );
-  htGrid->GenerateVectorFieldOn();
+  htGrid->GenerateInterfaceFieldsOn();
   htGrid->Update();
   vtkHyperTreeGrid* H = vtkHyperTreeGrid::SafeDownCast( htGrid->GetOutput() );
   H->SetHasInterface( 1 );
-  char normalsName[] = "Vector";
+  char normalsName[] = "Normals";
   H->SetInterfaceNormalsName( normalsName );
-  char interceptsName[] = "Depth";
+  char interceptsName[] = "Intercepts";
   H->SetInterfaceInterceptsName( interceptsName );
 
   // Axis reflection

Filters/HyperTree/Testing/Data/Baseline/TestHyperTreeGridBinary2DInterfaceMaterial.png.md5

+6f0700f8e834ea3d65dc4ff10a385ca9

Filters/HyperTree/vtkHyperTreeGridAxisReflection.cxx

@@ -144,19 +144,6 @@ int vtkHyperTreeGridAxisReflection::ProcessTrees( vtkHyperTreeGrid* input,
   vtkDoubleArray* outCoords = vtkDoubleArray::New();
   outCoords->SetNumberOfTuples( size );
 
-  // Create arrays for reflected interface if present
-  vtkDoubleArray* outNormals = 0;
-  vtkDoubleArray* outIntercepts = 0;
-  if ( hasInterface )
-  {
-    vtkIdType nTuples = inNormals->GetNumberOfTuples();
-    outNormals = vtkDoubleArray::New();
-    outNormals->SetNumberOfComponents( 3 );
-    outNormals->SetNumberOfTuples( nTuples );
-    outIntercepts = vtkDoubleArray::New();
-    outIntercepts->SetNumberOfTuples( nTuples );
-  }
-
   // Reflect point coordinate
   double coord;
   for ( unsigned int i = 0; i < size; ++ i )
@@ -186,29 +173,19 @@ int vtkHyperTreeGridAxisReflection::ProcessTrees( vtkHyperTreeGrid* input,
     for ( vtkIdType i = 0; i < nTuples; ++ i )
     {
       // Compute and stored reflected normal
-      double norm[3];
-      memcpy( norm, inNormals->GetTuple3( i ) , 3 * sizeof( double ) );
+      double* norm = inNormals->GetTuple3( i );
       norm[direction] = - norm[direction];
-      outNormals->SetTuple3( i, norm[0], norm[1], norm[2] );
+      inNormals->SetTuple3( i, norm[0], norm[1], norm[2] );
 
       // Compute and store reflected intercept
-      double inter = inIntercepts->GetTuple1( i );
-      inter -= 2. * offset * norm[direction];
-      outIntercepts->SetTuple1( i, inter );
+      double* inter = inIntercepts->GetTuple3( i );
+      inter[0] -= 2. * offset * norm[direction];
+      inIntercepts->SetTuple3( i, inter[0], inter[1], inter[2] );
     } // i
-
-    // Assign new interface arrays if available
-    this->OutData->SetVectors( outNormals );
-    this->OutData->AddArray( outIntercepts );
   } // if ( hasInterface )
 
   // Clean up
   outCoords->Delete();
-  if ( hasInterface )
-  {
-    outNormals->Delete();
-    outIntercepts->Delete();
-  }
 
   return 1;
 }

Filters/HyperTree/vtkHyperTreeGridAxisReflection.h

@@ -24,7 +24,8 @@
  * vtkHyperTreeGrid vtkHyperTreeGridAlgorithm vtkReflectionFilter
  *
  * @par Thanks:
- * This class was written by Philippe Pebay on a idea of Guénolé Harel and Jacques-Bernard Lekien, 2016
+ * This class was written by Philippe Pebay based on a idea of Guenole
+ * Harel and Jacques-Bernard Lekien, 2016
  * This work was supported by Commissariat a l'Energie Atomique (CEA/DIF)
 */
 
@@ -115,5 +116,4 @@ private:
   void operator=(const vtkHyperTreeGridAxisReflection&) = delete;
 };
 
-
 #endif /* vtkHyperTreeGridAxisReflection */

Filters/HyperTree/vtkHyperTreeGridGeometry.h

@@ -20,9 +20,10 @@
  * vtkHyperTreeGrid vtkHyperTreeGridAlgorithm
  *
  * @par Thanks:
- * This class was written by Philippe Pebay, Joachim Pouderoux, and Charles Law, Kitware 2013
- * This class was modified by Guénolé Harel and Jacques-Bernard Lekien, 2014
- * This class was rewritten by Philippe Pebay, 2016
+ * This class was written by Philippe Pebay, Joachim Pouderoux,
+ * and Charles Law, Kitware 2013
+ * This class was modified by Guenole Harel and Jacques-Bernard Lekien, 2014
+ * This class was rewritten by Philippe Pebay, NexGen Analytics 2017
  * This work was supported by Commissariat a l'Energie Atomique (CEA/DIF)
 */
 
@@ -34,8 +35,11 @@
 
 class vtkBitArray;
 class vtkCellArray;
+class vtkDoubleArray;
 class vtkHyperTreeGrid;
 class vtkHyperTreeGridCursor;
+class vtkIdList;
+class vtkIdTypeArray;
 class vtkPoints;
 
 class VTKFILTERSHYPERTREE_EXPORT vtkHyperTreeGridGeometry : public vtkHyperTreeGridAlgorithm
@@ -82,7 +86,7 @@ protected:
   /**
    * Helper method to generate a face based on its normal and offset from cursor origin
    */
-  void AddFace( vtkIdType, double*, double*, int, unsigned int );
+  void AddFace( vtkIdType, double*, double*, int, unsigned int, bool create = true );
 
   /**
    * Dimension of input grid
@@ -104,6 +108,47 @@ protected:
    */
   vtkCellArray* Cells;
 
+  //@{
+  /**
+   * Keep track of input interface parameters
+   */
+  bool HasInterface;
+  vtkDoubleArray* Normals;
+  vtkDoubleArray* Intercepts;
+  //@}
+
+  //@{
+  /**
+   * Storage for interface points
+   */
+  vtkPoints* FacePoints;
+  vtkIdList* FaceIDs;
+  //@}
+
+  //@{
+  /**
+   * Storage for interface edges
+   */
+  vtkIdType EdgesA[12];
+  vtkIdType EdgesB[12];
+  //@}
+
+  //@{
+  /**
+   * Storage for interface faces
+   */
+  vtkIdTypeArray* FacesA;
+  vtkIdTypeArray* FacesB;
+  //@}
+
+  //@{
+  /**
+   * Storage for interface scalars
+   */
+  vtkDoubleArray* FaceScalarsA;
+  vtkDoubleArray* FaceScalarsB;
+  //@}
+
 private:
   vtkHyperTreeGridGeometry(const vtkHyperTreeGridGeometry&) = delete;
   void operator=(const vtkHyperTreeGridGeometry&) = delete;

Filters/Sources/vtkHyperTreeGridSource.cxx

@@ -83,8 +83,8 @@ vtkHyperTreeGridSource::vtkHyperTreeGridSource()
   // By default do not use the material mask
   this->UseMaterialMask = false;
 
-  // By default do not generate a vector field
-  this->GenerateVectorField = false;
+  // By default do not generate interface vector fields
+  this->GenerateInterfaceFields = false;
 
   // Grid description & material mask as strings
   this->Descriptor = new char[2];
@@ -204,7 +204,7 @@ void vtkHyperTreeGridSource::PrintSelf( ostream& os, vtkIndent indent )
 
   os << indent << "UseDescriptor: " << this->UseDescriptor << endl;
   os << indent << "UseMaterialMask: " << this->UseMaterialMask << endl;
-  os << indent << "GenerateVectorField:" << this->GenerateVectorField << endl;
+  os << indent << "GenerateInterfaceFields:" << this->GenerateInterfaceFields << endl;
 
   os << indent << "LevelZeroMaterialIndex: " << this->LevelZeroMaterialIndex << endl;
   os << indent << "Descriptor: " << this->Descriptor << endl;
@@ -527,13 +527,18 @@ int vtkHyperTreeGridSource::RequestData( vtkInformation*,
   depthArray->SetNumberOfComponents( 1 );
   outData->SetScalars( depthArray );
 
-  if ( this->GenerateVectorField )
+  if ( this->GenerateInterfaceFields )
   {
-    // Prepare array of triples of doubles for vector field
-    vtkNew<vtkDoubleArray> vectorArray;
-    vectorArray->SetName( "Vector" );
-    vectorArray->SetNumberOfComponents( 3 );
-    outData->SetVectors( vectorArray );
+    // Prepare arrays of triples for interface surrogates
+    vtkNew<vtkDoubleArray> normalsArray;
+    normalsArray->SetName( "Normals" );
+    normalsArray->SetNumberOfComponents( 3 );
+    outData->SetVectors( normalsArray );
+
+    vtkNew<vtkDoubleArray> interceptsArray;
+    interceptsArray->SetName( "Intercepts" );
+    interceptsArray->SetNumberOfComponents( 3 );
+    outData->AddArray( interceptsArray );
   }
 
   if ( ! this->UseDescriptor )
@@ -864,11 +869,12 @@ void vtkHyperTreeGridSource::SubdivideFromStringDescriptor( vtkHyperTreeGrid* ou
   // Set depth array value
   outData->GetArray( "Depth" )->InsertTuple1( id, level );
 
-  if ( this->GenerateVectorField )
+  if ( this->GenerateInterfaceFields )
   {
-    // Set vector array value
+    // Set interface arrays values
     double v = 1. / ( 1 << level );
-    outData->GetArray( "Vector" )->InsertTuple3( id, v, v, v );
+    outData->GetArray( "Normals" )->InsertTuple3( id, v, v, v );
+    outData->GetArray( "Intercepts" )->InsertTuple3( id, v, 0., 3. );
   }
 
   // Initialize global index of tree
@@ -1082,11 +1088,12 @@ void vtkHyperTreeGridSource::SubdivideFromBitsDescriptor( vtkHyperTreeGrid* outp
   // Set depth array value
   outData->GetArray( "Depth" )->InsertTuple1( id, level );
 
-  if ( this->GenerateVectorField )
+  if ( this->GenerateInterfaceFields )
   {
-    // Set vector array value
+    // Set interface arrays values
     double v = 1. / ( 1 << level );
-    outData->GetArray( "Vector" )->InsertTuple3( id, v, v, v );
+    outData->GetArray( "Normals" )->InsertTuple3( id, v, v, v );
+    outData->GetArray( "Intercepts" )->InsertTuple3( id, v, 0., 3. );
   }
 
   // Initialize global index of tree
@@ -1303,11 +1310,12 @@ void vtkHyperTreeGridSource::SubdivideFromQuadric( vtkHyperTreeGrid* output,
   // Set depth array value
   outData->GetArray( "Depth" )->InsertTuple1( id, level );
 
-  if ( this->GenerateVectorField )
+  if ( this->GenerateInterfaceFields )
   {
-    // Set vector array value
+    // Set interface arrays values
     double v = 1. / ( 1 << level );
-    outData->GetArray( "Vector" )->InsertTuple3( id, v, v, v );
+    outData->GetArray( "Normals" )->InsertTuple3( id, v, v, v );
+    outData->GetArray( "Intercepts" )->InsertTuple3( id, v, 0., 3. );
   }
 
   // Subdivide further or stop recursion with terminal leaf
@@ -1426,11 +1434,12 @@ void vtkHyperTreeGridSource::SubdivideFromQuadric( vtkHyperTreeGrid* output,
 
     // Cell values
     outData->GetArray( "Depth" )->InsertTuple1( id, level );
-    if ( this->GenerateVectorField )
+    if ( this->GenerateInterfaceFields )
     {
-      // Set vector array value
+      // Set interface arrays values
       double v = 1. / ( 1 << level );
-      outData->GetArray( "Vector" )->InsertTuple3( id, v, v, v );
+      outData->GetArray( "Normals" )->InsertTuple3( id, v, v, v );
+      outData->GetArray( "Intercepts" )->InsertTuple3( id, v, 0., 3. );
     }
     outData->GetArray( "Quadric" )->InsertTuple1( id, sum );
   } // else

Filters/Sources/vtkHyperTreeGridSource.h

@@ -164,13 +164,13 @@ public:
 
   //@{
   /**
-   * Set/get whether a cell-centered vector field
+   * Set/get whether cell-centered interface fields
    * should be generated.
    * Default: false
    */
-  vtkSetMacro(GenerateVectorField, bool);
-  vtkGetMacro(GenerateVectorField, bool);
-  vtkBooleanMacro(GenerateVectorField, bool);
+  vtkSetMacro(GenerateInterfaceFields, bool);
+  vtkGetMacro(GenerateInterfaceFields, bool);
+  vtkBooleanMacro(GenerateInterfaceFields, bool);
   //@}
 
   //@{
@@ -327,7 +327,7 @@ protected:
   unsigned int BlockSize;
   bool UseDescriptor;
   bool UseMaterialMask;
-  bool GenerateVectorField;
+  bool GenerateInterfaceFields;
 
   vtkDataArray* XCoordinates;
   vtkDataArray* YCoordinates;