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52618: Import_1D2D fails to import from a mesh group onto a group of geom faces

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+ fix StdMeshers_ViscousLayers.cxx for
http://www.salome-platform.org/forum/forum_14/777944993
This commit is contained in:
eap 2015-02-27 20:38:00 +03:00
parent fd1943809d
commit 066f625a46
8 changed files with 150 additions and 48 deletions
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7
doc/salome/gui/SMESH/input/constructing_submeshes.doc
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@ -58,10 +58,9 @@ same priority.
If meshing parameters are defined on sub-meshes of the same priority,
for example different 1D hypotheses are assigned to two faces sharing
an edge, an arbitrary algorithm/hypothesis will be used for
meshing. This indeterminacy can be fixed by
\ref submesh_order_anchor "Changing" mutual priority of such
concurrent sub-meshes.
an edge, the hypothesis assigned to a sub-shape with a lower ID will
be used for meshing. You can \ref submesh_order_anchor "change" mutual
priority of such concurrent sub-meshes.
\n Construction of a sub-mesh consists of:

6
idl/SMESH_BasicHypothesis.idl
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@ -876,7 +876,7 @@ module StdMeshers
* interface of "Viscous Layers" hypothesis.
* This hypothesis specifies parameters of layers of prisms to build
* near mesh boundary. This hypothesis can be used by several 3D algorithms:
* NETGEN 3D, GHS3D, Hexahedron(i,j,k)
* NETGEN 3D, Hexahedron(i,j,k), MG_Tetra
*/
interface StdMeshers_ViscousLayers : SMESH::SMESH_Hypothesis
{
@ -907,7 +907,7 @@ module StdMeshers
short GetNumberLayers();
/*!
* Set factor (>1.0) of growth of layer thickness towards inside of mesh
* Set factor (>=1.0) of growth of layer thickness towards inside of mesh
*/
void SetStretchFactor(in double factor) raises (SALOME::SALOME_Exception);
double GetStretchFactor();
@ -951,7 +951,7 @@ module StdMeshers
short GetNumberLayers();
/*!
* Set factor (>1.0) of growth of layer thickness towards inside of mesh
* Set factor (>=1.0) of growth of layer thickness towards inside of mesh
*/
void SetStretchFactor(in double factor) raises (SALOME::SALOME_Exception);
double GetStretchFactor();

14
src/SMESH/SMESH_Hypothesis.hxx
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@ -79,13 +79,15 @@ public:
virtual void NotifySubMeshesHypothesisModification();
void SetLibName(const char* theLibName);
//void SetParameters(const char *theParameters);
//char* GetParameters() const;
/*!
* \brief The returned value is used by NotifySubMeshesHypothesisModification()
* to decide to call subMesh->AlgoStateEngine( MODIF_HYP, hyp ) or not
* if subMesh is ready to be computed (algo+hyp==OK) but not yet computed.
* True result is reasonable for example if EventListeners depend on
* parameters of hypothesis.
*/
virtual bool DataDependOnParams() const { return false; }
// void SetLastParameters(const char* theParameters);
// char* GetLastParameters() const;
// void ClearParameters();
/*!
* \brief Initialize my parameter values by the mesh built on the geometry
* \param theMesh - the built mesh

3
src/SMESH/SMESH_Mesh.cxx
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@ -1215,7 +1215,8 @@ void SMESH_Mesh::NotifySubMeshesHypothesisModification(const SMESH_Hypothesis* h
// other possible changes are not interesting. (IPAL0052457 - assigning hyp performance pb)
if ( aSubMesh->GetComputeState() != SMESH_subMesh::COMPUTE_OK &&
aSubMesh->GetComputeState() != SMESH_subMesh::FAILED_TO_COMPUTE &&
aSubMesh->GetAlgoState() != SMESH_subMesh::MISSING_HYP )
aSubMesh->GetAlgoState() != SMESH_subMesh::MISSING_HYP &&
!hyp->DataDependOnParams() )
continue;
const TopoDS_Shape & aSubShape = aSubMesh->GetSubShape();

6
src/SMESH_SWIG/StdMeshersBuilder.py
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@ -1345,15 +1345,13 @@ class StdMeshersBuilder_UseExistingElements_1D2D(Mesh_Algorithm):
# @param UseExisting if ==true - searches for the existing hypothesis created with
# the same parameters, else (default) - creates a new one
def SourceFaces(self, groups, toCopyMesh=False, toCopyGroups=False, UseExisting=False):
for group in groups:
from salome.smesh.smeshBuilder import AssureGeomPublished
AssureGeomPublished( self.mesh, group )
compFun = lambda hyp, args: ( hyp.GetSourceFaces() == args[0] and \
hyp.GetCopySourceMesh() == args[1], args[2] )
hyp = self.Hypothesis("ImportSource2D", [groups, toCopyMesh, toCopyGroups],
UseExisting=UseExisting, CompareMethod=compFun)
UseExisting=UseExisting, CompareMethod=compFun, toAdd=False)
hyp.SetSourceFaces(groups)
hyp.SetCopySourceMesh(toCopyMesh, toCopyGroups)
self.mesh.AddHypothesis(hyp, self.geom)
return hyp
pass # end of StdMeshersBuilder_UseExistingElements_1D2D class

1
src/StdMeshers/StdMeshers_ImportSource.hxx
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@ -61,6 +61,7 @@ class STDMESHERS_EXPORT StdMeshers_ImportSource1D : public SMESH_Hypothesis
virtual std::istream & LoadFrom(std::istream & load);
virtual bool SetParametersByMesh(const SMESH_Mesh* theMesh, const TopoDS_Shape& theShape);
virtual bool SetParametersByDefaults(const TDefaults& dflts, const SMESH_Mesh* theMesh=0);
virtual bool DataDependOnParams() const { return true; }
void RestoreGroups(const std::vector<SMESH_Group*>& groups);
void StoreResultGroups(const std::vector<SMESH_Group*>& groups,

159
src/StdMeshers/StdMeshers_Import_1D2D.cxx
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@ -44,15 +44,20 @@
#include "Utils_SALOME_Exception.hxx"
#include "utilities.h"
#include <BRepClass_FaceClassifier.hxx>
#include <BRepTools.hxx>
#include <BRep_Builder.hxx>
#include <BRep_Tool.hxx>
#include <Bnd_B2d.hxx>
#include <GeomAPI_ProjectPointOnSurf.hxx>
#include <GeomAdaptor_Surface.hxx>
#include <Precision.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Compound.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Vertex.hxx>
#include <Precision.hxx>
#include <numeric>
@ -187,9 +192,28 @@ bool StdMeshers_Import_1D2D::Compute(SMESH_Mesh & theMesh, const TopoDS_Shape &
Handle(Geom_Surface) surface = BRep_Tool::Surface( geomFace );
const bool reverse =
( helper.GetSubShapeOri( tgtMesh->ShapeToMesh(), geomFace) == TopAbs_REVERSED );
( helper.GetSubShapeOri( tgtMesh->ShapeToMesh(), geomFace ) == TopAbs_REVERSED );
gp_Pnt p; gp_Vec du, dv;
BRepClass_FaceClassifier classifier;
Bnd_B2d bndBox2d;
{
Standard_Real umin,umax,vmin,vmax;
BRepTools::UVBounds(geomFace,umin,umax,vmin,vmax);
gp_XY pmin( umin,vmin ), pmax( umax,vmax );
bndBox2d.Add( pmin );
bndBox2d.Add( pmax );
if ( helper.HasSeam() )
{
const int i = helper.GetPeriodicIndex();
pmin.SetCoord( i, helper.GetOtherParam( pmin.Coord( i )));
pmax.SetCoord( i, helper.GetOtherParam( pmax.Coord( i )));
bndBox2d.Add( pmin );
bndBox2d.Add( pmax );
}
bndBox2d.Enlarge( 1e-2 * Sqrt( bndBox2d.SquareExtent() ));
}
set<int> subShapeIDs;
subShapeIDs.insert( shapeID );
@ -244,7 +268,10 @@ bool StdMeshers_Import_1D2D::Compute(SMESH_Mesh & theMesh, const TopoDS_Shape &
StdMeshers_Import_1D::TNodeNodeMap* n2n;
StdMeshers_Import_1D::TElemElemMap* e2e;
vector<const SMDS_MeshNode*> newNodes;
vector<TopAbs_State> nodeState;
vector<const SMDS_MeshNode*> newNodes; // of a face
set <const SMDS_MeshNode*> bndNodes; // nodes classified ON
for ( size_t iG = 0; iG < srcGroups.size(); ++iG )
{
const SMESHDS_GroupBase* srcGroup = srcGroups[iG]->GetGroupDS();
@ -257,58 +284,126 @@ bool StdMeshers_Import_1D2D::Compute(SMESH_Mesh & theMesh, const TopoDS_Shape &
const double groupTol = 0.5 * sqrt( getMinElemSize2( srcGroup ));
minGroupTol = std::min( groupTol, minGroupTol );
GeomAdaptor_Surface S( surface );
const double clsfTol = Min( S.UResolution( 0.1 * groupTol ),
S.VResolution( 0.1 * groupTol ));
StdMeshers_Import_1D::TNodeNodeMap::iterator n2nIt;
pair< StdMeshers_Import_1D::TNodeNodeMap::iterator, bool > it_isnew;
SMDS_ElemIteratorPtr srcElems = srcGroup->GetElements();
SMDS_MeshNode *tmpNode = helper.AddNode(0,0,0);
gp_XY uv( Precision::Infinite(), Precision::Infinite() );
while ( srcElems->more() ) // loop on group contents
{
const SMDS_MeshElement* face = srcElems->next();
// find or create nodes of a new face
newNodes.resize( face->NbNodes() );
nodeState.resize( face->NbNodes() );
newNodes.resize( nodeState.size() );
newNodes.back() = 0;
int nbCreatedNodes = 0;
bool isOut = false, isIn = false; // if at least one node isIn - do not classify other nodes
SMDS_MeshElement::iterator node = face->begin_nodes();
for ( size_t i = 0; i < newNodes.size(); ++i, ++node )
{
StdMeshers_Import_1D::TNodeNodeMap::iterator n2nIt =
n2n->insert( make_pair( *node, (SMDS_MeshNode*)0 )).first;
if ( n2nIt->second )
SMESH_TNodeXYZ nXYZ = *node;
nodeState[ i ] = TopAbs_UNKNOWN;
it_isnew = n2n->insert( make_pair( *node, (SMDS_MeshNode*)0 ));
n2nIt = it_isnew.first;
const SMDS_MeshNode* & newNode = n2nIt->second;
if ( !it_isnew.second && !newNode )
break; // a node is mapped to NULL - it is OUT of the FACE
if ( newNode )
{
if ( !subShapeIDs.count( n2nIt->second->getshapeId() )) // node already on an EDGE
break;
if ( !subShapeIDs.count( newNode->getshapeId() ))
break; // node is Imported onto other FACE
if ( !isIn && bndNodes.count( *node ))
nodeState[ i ] = TopAbs_ON;
}
else
{
// find a pre-existing node
// find a node pre-existing on EDGE or VERTEX
dist2foundNodes.clear();
existingNodeOcTr.NodesAround( SMESH_TNodeXYZ( *node ), dist2foundNodes, groupTol );
existingNodeOcTr.NodesAround( nXYZ, dist2foundNodes, groupTol );
if ( !dist2foundNodes.empty() )
(*n2nIt).second = dist2foundNodes.begin()->second;
}
if ( !n2nIt->second )
{
// find out if node lies on theShape
tmpNode->setXYZ( (*node)->X(), (*node)->Y(), (*node)->Z());
uv.SetCoord( Precision::Infinite(), Precision::Infinite() );
if ( helper.CheckNodeUV( geomFace, tmpNode, uv, groupTol, /*force=*/true ))
{
SMDS_MeshNode* newNode = tgtMesh->AddNode( (*node)->X(), (*node)->Y(), (*node)->Z());
n2nIt->second = newNode;
tgtMesh->SetNodeOnFace( newNode, shapeID, uv.X(), uv.Y() );
nbCreatedNodes++;
newNode = dist2foundNodes.begin()->second;
nodeState[ i ] = TopAbs_ON;
}
}
if ( !(newNodes[i] = n2nIt->second ))
if ( !newNode )
{
// find out if node lies on the surface of theShape
gp_XY uv( Precision::Infinite(), 0 );
isOut = ( !helper.CheckNodeUV( geomFace, *node, uv, groupTol, /*force=*/true ) ||
bndBox2d.IsOut( uv ));
if ( !isOut && !isIn ) // classify
{
classifier.Perform( geomFace, uv, clsfTol );
nodeState[i] = classifier.State();
isOut = ( nodeState[i] == TopAbs_OUT );
}
if ( !isOut ) // create a new node
{
newNode = tgtMesh->AddNode( nXYZ.X(), nXYZ.Y(), nXYZ.Z());
tgtMesh->SetNodeOnFace( newNode, shapeID, uv.X(), uv.Y() );
nbCreatedNodes++;
if ( nodeState[i] == TopAbs_ON )
bndNodes.insert( *node );
else
isIn = true;
}
}
if ( !(newNodes[i] = newNode ) || isOut )
break;
}
if ( !newNodes.back() )
continue; // not all nodes of the face lie on theShape
if ( !isIn ) // if all nodes are on FACE boundary, a mesh face can be OUT
{
// check state of nodes created for other faces
for ( size_t i = 0; i < nodeState.size() && !isIn; ++i )
{
if ( nodeState[i] != TopAbs_UNKNOWN ) continue;
gp_XY uv = helper.GetNodeUV( geomFace, newNodes[i] );
classifier.Perform( geomFace, uv, clsfTol );
nodeState[i] = classifier.State();
isIn = ( nodeState[i] == TopAbs_IN );
}
if ( !isIn ) // classify face center
{
gp_XYZ gc( 0., 0., 0 );
for ( size_t i = 0; i < newNodes.size(); ++i )
gc += SMESH_TNodeXYZ( newNodes[i] );
gc /= newNodes.size();
TopLoc_Location loc;
GeomAPI_ProjectPointOnSurf& proj = helper.GetProjector( geomFace,
loc,
helper.MaxTolerance( geomFace ));
if ( !loc.IsIdentity() ) loc.Transformation().Inverted().Transforms( gc );
proj.Perform( gc );
if ( !proj.IsDone() || proj.NbPoints() < 1 )
continue;
Quantity_Parameter U,V;
proj.LowerDistanceParameters(U,V);
gp_XY uv( U,V );
classifier.Perform( geomFace, uv, clsfTol );
if ( classifier.State() != TopAbs_IN )
continue;
}
}
// try to find already created face
SMDS_MeshElement * newFace = 0;
if ( nbCreatedNodes == 0 &&
tgtMesh->FindElement(newNodes, SMDSAbs_Face, /*noMedium=*/false))
continue; // repeated face in source groups already created
continue; // repeated face in source groups already created
// check future face orientation
const int nbCorners = face->NbCornerNodes();
@ -319,7 +414,7 @@ bool StdMeshers_Import_1D2D::Compute(SMESH_Mesh & theMesh, const TopoDS_Shape &
gp_Vec geomNorm;
do
{
uv = helper.GetNodeUV( geomFace, newNodes[++iNode] );
gp_XY uv = helper.GetNodeUV( geomFace, newNodes[++iNode] );
surface->D1( uv.X(),uv.Y(), p, du,dv );
geomNorm = reverse ? dv^du : du^dv;
}
@ -384,9 +479,15 @@ bool StdMeshers_Import_1D2D::Compute(SMESH_Mesh & theMesh, const TopoDS_Shape &
// }
}
}
helper.GetMeshDS()->RemoveNode(tmpNode);
// Remove OUT nodes from n2n map
for ( n2nIt = n2n->begin(); n2nIt != n2n->end(); )
if ( !n2nIt->second )
n2n->erase( n2nIt++ );
else
++n2nIt;
}
// ==========================================================
// Put nodes on geom edges and create edges on them;
// check if the whole geom face is covered by imported faces

2
src/StdMeshers/StdMeshers_ViscousLayers.cxx
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@ -1590,7 +1590,7 @@ SMESH_ComputeErrorPtr _ViscousBuilder::CheckHypotheses( SMESH_Mesh& mesh
findSolidsWithLayers();
bool ok = findFacesWithLayers();
bool ok = findFacesWithLayers( true );
// remove _MeshOfSolid's of _SolidData's
for ( size_t i = 0; i < _sdVec.size(); ++i )