PAL13504 (Mesh from an imported mesh)

add PseudoShape(), HasShapeToMesh()

src/SMESH/SMESH_Mesh.cxx

@@ -49,6 +49,7 @@
 #include "DriverSTL_R_SMDS_Mesh.h"
 
 #include <BRepTools_WireExplorer.hxx>
+#include <BRepPrimAPI_MakeBox.hxx>
 #include <BRep_Builder.hxx>
 #include <gp_Pnt.hxx>
 
@@ -94,6 +95,7 @@ SMESH_Mesh::SMESH_Mesh(int theLocalId,
   _myDocument = theDocument;
   _idDoc = theDocument->NewMesh(theIsEmbeddedMode);
   _myMeshDS = theDocument->GetMesh(_idDoc);
+  _myMeshDS->ShapeToMesh( PseudoShape() );
   _isShapeToMesh = false;
 }
 
@@ -117,7 +119,7 @@ SMESH_Mesh::~SMESH_Mesh()
 
 //=============================================================================
 /*!
- * 
+ * \brief Set geometry to be meshed
  */
 //=============================================================================
 
@@ -125,7 +127,11 @@ void SMESH_Mesh::ShapeToMesh(const TopoDS_Shape & aShape)
 {
   if(MYDEBUG) MESSAGE("SMESH_Mesh::ShapeToMesh");
 
-  if ( !_myMeshDS->ShapeToMesh().IsNull() && aShape.IsNull() )
+  if ( !aShape.IsNull() && _isShapeToMesh )
+    throw SALOME_Exception(LOCALIZED ("a shape to mesh has already been defined"));
+
+  // clear current data
+  if ( !_myMeshDS->ShapeToMesh().IsNull() )
   {
     // removal of a shape to mesh, delete objects referring to sub-shapes:
     // - sub-meshes
@@ -144,28 +150,57 @@ void SMESH_Mesh::ShapeToMesh(const TopoDS_Shape & aShape)
       else
         i_gr++;
     }
+    _mapAncestors.Clear();
     _mapPropagationChains.Clear();
+
+    // clear SMESHDS
+    TopoDS_Shape aNullShape;
+    _myMeshDS->ShapeToMesh( aNullShape );
   }
-  else
+
+  // set a new geometry
+  if ( !aShape.IsNull() )
   {
-    if (_isShapeToMesh)
+    _myMeshDS->ShapeToMesh(aShape);
-      throw SALOME_Exception(LOCALIZED ("a shape to mesh has already been defined"));
+    _isShapeToMesh = true;
+
+    // fill _mapAncestors
+    int desType, ancType;
+    for ( desType = TopAbs_VERTEX; desType > TopAbs_COMPOUND; desType-- )
+      for ( ancType = desType - 1; ancType >= TopAbs_COMPOUND; ancType-- )
+        TopExp::MapShapesAndAncestors ( aShape,
+                                        (TopAbs_ShapeEnum) desType,
+                                        (TopAbs_ShapeEnum) ancType,
+                                        _mapAncestors );
   }
-  _isShapeToMesh = true;
+}
-  _myMeshDS->ShapeToMesh(aShape);
 
-  // fill _mapAncestors
+//=======================================================================
-  _mapAncestors.Clear();
+/*!
-  int desType, ancType;
+ * \brief Return geometry to be meshed. (It may be a PseudoShape()!)
-  for ( desType = TopAbs_VERTEX; desType > TopAbs_COMPOUND; desType-- )
+ */
-    for ( ancType = desType - 1; ancType >= TopAbs_COMPOUND; ancType-- )
+//=======================================================================
-      TopExp::MapShapesAndAncestors ( aShape,
-                                     (TopAbs_ShapeEnum) desType,
-                                     (TopAbs_ShapeEnum) ancType,
-                                     _mapAncestors );
 
-  // NRI : 24/02/03
+TopoDS_Shape SMESH_Mesh::GetShapeToMesh() const
-  //EAP: 1/9/04 TopExp::MapShapes(aShape, _subShapes); USE the same map of _myMeshDS
+{
+  return _myMeshDS->ShapeToMesh();
+}
+
+//=======================================================================
+/*!
+ * \brief Return a solid which is returned by GetShapeToMesh() if
+ *        a real geometry to be meshed was not set
+ */
+//=======================================================================
+
+const TopoDS_Solid& SMESH_Mesh::PseudoShape()
+{
+  static TopoDS_Solid aSolid;
+  if ( aSolid.IsNull() )
+  {
+    aSolid = BRepPrimAPI_MakeBox(1,1,1);
+  }
+  return aSolid;
 }
 
 //=======================================================================
@@ -494,17 +529,6 @@ SMESH_Hypothesis::Hypothesis_Status
  */
 //=============================================================================
 
-SMESHDS_Mesh * SMESH_Mesh::GetMeshDS()
-{
-  return _myMeshDS;
-}
-
-//=============================================================================
-/*!
- * 
- */
-//=============================================================================
-
 const list<const SMESHDS_Hypothesis*>&
 SMESH_Mesh::GetHypothesisList(const TopoDS_Shape & aSubShape) const
   throw(SALOME_Exception)
@@ -649,29 +673,6 @@ void SMESH_Mesh::ClearLog() throw(SALOME_Exception)
   _myMeshDS->GetScript()->Clear();
 }
 
-//=============================================================================
-/*!
- * 
- */
-//=============================================================================
-
-int SMESH_Mesh::GetId()
-{
-  if(MYDEBUG) MESSAGE("SMESH_Mesh::GetId");
-  return _id;
-}
-
-//=============================================================================
-/*!
- * 
- */
-//=============================================================================
-
-SMESH_Gen *SMESH_Mesh::GetGen()
-{
-  return _gen;
-}
-
 //=============================================================================
 /*!
  * Get or Create the SMESH_subMesh object implementation
@@ -857,7 +858,8 @@ void SMESH_Mesh::NotifySubMeshesHypothesisModification(const SMESH_Hypothesis* t
         if ( GetHypotheses( aSubShape, compatibleHypoKind, usedHyps, true ) &&
              find( usedHyps.begin(), usedHyps.end(), hyp ) != usedHyps.end() )
         {
-          aSubMesh->ComputeStateEngine(SMESH_subMesh::MODIF_HYP);
+          aSubMesh->AlgoStateEngine(SMESH_subMesh::MODIF_HYP,
+                                    const_cast< SMESH_Hypothesis*>( hyp ));
 
           if ( algo->GetDim() == 1 && IsPropagationHypothesis( aSubShape ))
             CleanMeshOnPropagationChain( aSubShape );

src/SMESH/SMESH_Mesh.hxx

@@ -70,6 +70,7 @@ class SMESH_Group;
 class TopTools_ListOfShape;
 class SMESH_subMesh;
 class SMESH_HypoFilter;
+class TopoDS_Solid;
 
 //typedef NMTTools_IndexedDataMapOfShapeIndexedMapOfShape IndexedMapOfChain;
 typedef SMESH_IndexedDataMapOfShapeIndexedMapOfShape IndexedMapOfChain;
@@ -87,8 +88,25 @@ public:
   
   virtual ~SMESH_Mesh();
   
+  /*!
+   * \brief Set geometry to be meshed
+   */
   void ShapeToMesh(const TopoDS_Shape & aShape);
-  
+  /*!
+   * \brief Return geometry to be meshed. (It may be a PseudoShape()!)
+   */
+  TopoDS_Shape GetShapeToMesh() const;
+  /*!
+   * \brief Return true if there is a geometry to be meshed, not PseudoShape()
+   */
+  bool HasShapeToMesh() const { return _isShapeToMesh; }
+  /*!
+   * \brief Return a solid which is returned by GetShapeToMesh() if
+   *        a real geometry to be meshed was not set
+   */
+  static const TopoDS_Solid& PseudoShape();
+
+
   int UNVToMesh(const char* theFileName);
   /*!
    * consult DriverMED_R_SMESHDS_Mesh::ReadStatus for returned value
@@ -122,11 +140,11 @@ public:
   
   void ClearLog() throw(SALOME_Exception);
   
-  int GetId();
+  int GetId()                { return _id; }
   
-  SMESHDS_Mesh * GetMeshDS();
+  SMESHDS_Mesh * GetMeshDS() { return _myMeshDS; }
   
-  SMESH_Gen *GetGen();
+  SMESH_Gen *GetGen()        { return _gen; }
   
   SMESH_subMesh *GetSubMesh(const TopoDS_Shape & aSubShape)
     throw(SALOME_Exception);