22316: EDF 2719 SMESH: Split hexas into prisms

[modules/smesh.git] / src / SMDS / SMDS_VolumeTool.cxx

diff --git a/src/SMDS/SMDS_VolumeTool.cxx b/src/SMDS/SMDS_VolumeTool.cxx
index 0f864575b8ed8e323b7aea33c772e67312c62812..d773413e34c28da55946b08c8d9f61b067462e06 100644 (file)
--- a/src/SMDS/SMDS_VolumeTool.cxx
+++ b/src/SMDS/SMDS_VolumeTool.cxx
@@ -132,8 +132,6 @@ static int Penta_nbN [] = { 3, 3, 4, 4, 4 };
 //        /  |       /  |
 //     N4+----------+N7 |
 //       |   |      |   |           HEXAHEDRON
-//       |   |      |   |
-//       |   |      |   |
 //       | N1+------|---+N2
 //       |  /       |  /
 //       | /        | /
@@ -155,6 +153,7 @@ static int Hexa_RE [6][5] = { // REVERSED -> EXTERNAL
   { 3, 7, 6, 2, 3 }, 
   { 0, 4, 7, 3, 0 }};
 static int Hexa_nbN [] = { 4, 4, 4, 4, 4, 4 };
+static int Hexa_oppF[] = { 1, 0, 4, 5, 2, 3 }; // oppopsite facet indices
 
 /*   
 //      N8 +------+ N9
@@ -279,7 +278,7 @@ static int QuadPyram_nbN [] = { 8, 6, 6, 6, 6 };
 */
 static int QuadPenta_F [5][9] = {  // FORWARD
   { 0, 6, 1, 7, 2, 8, 0, 0, 0 },
-  { 3,11, 5, 10,4, 9, 3, 3, 3 },
+  { 3, 11,5, 10,4, 9, 3, 3, 3 },
   { 0, 12,3, 9, 4, 13,1, 6, 0 },
   { 1, 13,4, 10,5, 14,2, 7, 1 },
   { 0, 8, 2, 14,5, 11,3, 12,0 }}; 
@@ -1147,12 +1146,7 @@ int SMDS_VolumeTool::GetOppFaceIndex( int faceIndex ) const
       break;
     case 20:
     case 27:
-      if ( faceIndex <= 1 ) // top or bottom
-        ind = 1 - faceIndex;
-      else {
-        const int nbSideFaces = myAllFacesNbNodes[0] / 2;
-        ind = ( faceIndex - nbHoriFaces + nbSideFaces/2 ) % nbSideFaces + nbHoriFaces;
-      }
+      ind = GetOppFaceIndexOfHex( faceIndex );
       break;
     default:;
     }
@@ -1160,6 +1154,16 @@ int SMDS_VolumeTool::GetOppFaceIndex( int faceIndex ) const
   return ind;
 }
 
+//=======================================================================
+//function : GetOppFaceIndexOfHex
+//purpose  : Return index of the opposite face of the hexahedron
+//=======================================================================
+
+int SMDS_VolumeTool::GetOppFaceIndexOfHex( int faceIndex )
+{
+  return Hexa_oppF[ faceIndex ];
+}
+
 //=======================================================================
 //function : IsLinked
 //purpose  : return true if theNode1 is linked with theNode2
@@ -1493,9 +1497,7 @@ double SMDS_VolumeTool::MaxLinearSize2() const
 
 //================================================================================
 /*!
- * \brief check that only one volume is build on the face nodes
- *
- * If a face is shared by one of <ignoreVolumes>, it is considered free
+ * \brief fast check that only one volume is build on the face nodes
  */
 //================================================================================
 
@@ -1503,6 +1505,49 @@ bool SMDS_VolumeTool::IsFreeFace( int faceIndex, const SMDS_MeshElement** otherV
 {
   const bool isFree = true;
 
+  if (!setFace( faceIndex ))
+    return !isFree;
+
+  const SMDS_MeshNode** nodes = GetFaceNodes( faceIndex );
+
+  // a set of facet nodes w/o medium ones and w/o nodes[0]
+  set< const SMDS_MeshElement* > nodeSet;
+  const int di = myVolume->IsQuadratic() ? 2 : 1;
+  for ( int i = di; i < myFaceNbNodes; i += di )
+    nodeSet.insert( nodes[i] );
+
+  SMDS_ElemIteratorPtr eIt = nodes[0]->GetInverseElementIterator( SMDSAbs_Volume );
+  SMDS_ElemIteratorPtr nIt;
+  while ( eIt->more() ) {
+    const SMDS_MeshElement* vol = eIt->next();
+    if ( vol != myVolume ) {
+      size_t nbShared = 0;
+      if ( const SMDS_VtkVolume* v = dynamic_cast< const SMDS_VtkVolume* >( vol ))
+        nIt = v->uniqueNodesIterator();
+      else
+        nIt = vol->nodesIterator();
+      while ( nIt->more() )
+        if (( nbShared += nodeSet.count( nIt->next() )) == nodeSet.size() )
+        {
+          if ( otherVol ) *otherVol = vol;
+          return !isFree;
+        }
+    }
+  }
+  if ( otherVol ) *otherVol = 0;
+  return isFree;
+}
+
+//================================================================================
+/*!
+ * \brief Thorough check that only one volume is build on the face nodes
+ */
+//================================================================================
+
+bool SMDS_VolumeTool::IsFreeFaceAdv( int faceIndex, const SMDS_MeshElement** otherVol/*=0*/ ) const
+{
+  const bool isFree = true;
+
   if (!setFace( faceIndex ))
     return !isFree;
 
@@ -1619,16 +1664,40 @@ bool SMDS_VolumeTool::IsFreeFace( int faceIndex, const SMDS_MeshElement** otherV
 //purpose  : Return index of a face formed by theFaceNodes
 //=======================================================================
 
-int SMDS_VolumeTool::GetFaceIndex( const set<const SMDS_MeshNode*>& theFaceNodes ) const
+int SMDS_VolumeTool::GetFaceIndex( const set<const SMDS_MeshNode*>& theFaceNodes,
+                                   const int                        theFaceIndexHint ) const
 {
-  for ( int iFace = 0; iFace < myNbFaces; iFace++ ) {
-    const SMDS_MeshNode** nodes = GetFaceNodes( iFace );
-    int nbFaceNodes = NbFaceNodes( iFace );
-    set<const SMDS_MeshNode*> nodeSet;
-    for ( int iNode = 0; iNode < nbFaceNodes; iNode++ )
-      nodeSet.insert( nodes[ iNode ] );
-    if ( theFaceNodes == nodeSet )
-      return iFace;
+  if ( theFaceIndexHint >= 0 )
+  {
+    int nbNodes = NbFaceNodes( theFaceIndexHint );
+    if ( nbNodes == (int) theFaceNodes.size() )
+    {
+      const SMDS_MeshNode** nodes = GetFaceNodes( theFaceIndexHint );
+      while ( nbNodes )
+        if ( theFaceNodes.count( nodes[ nbNodes-1 ]))
+          --nbNodes;
+        else
+          break;
+      if ( nbNodes == 0 )
+        return theFaceIndexHint;
+    }
+  }
+  for ( int iFace = 0; iFace < myNbFaces; iFace++ )
+  {
+    if ( iFace == theFaceIndexHint )
+      continue;
+    int nbNodes = NbFaceNodes( iFace );
+    if ( nbNodes == (int) theFaceNodes.size() )
+    {
+      const SMDS_MeshNode** nodes = GetFaceNodes( iFace );
+      while ( nbNodes )
+        if ( theFaceNodes.count( nodes[ nbNodes-1 ]))
+          --nbNodes;
+        else
+          break;
+      if ( nbNodes == 0 )
+        return iFace;
+    }
   }
   return -1;
 }