ForkMaster/smesh
1
0
Fork 0
mirror of https://git.salome-platform.org/gitpub/modules/smesh.git synced 2024-12-24 16:30:34 +05:00
Code Issues Packages Projects Releases Wiki Activity

0020452: EDF 1056 SMESH : 2D Projection Issue

Browse Source 
use shape partnership (TopoDS_Shape::IsPartner()) for an easy projection
This commit is contained in:
eap 2009-08-20 07:42:20 +00:00
parent c9d6ead3f5
commit 4aab533cbd
1 changed files with 99 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

99
src/StdMeshers/StdMeshers_Projection_2D.cxx
View File

@ -354,8 +354,103 @@ namespace {
} // bool getBoundaryNodes()
//================================================================================
/*!
* \brief Preform projection in case if tgtFace.IsPartner( srcFace )
* \param tgtFace - target face
* \param srcFace - source face
* \param tgtMesh - target mesh
* \param srcMesh - source mesh
* \retval bool - true if succeeded
*/
//================================================================================
bool projectPartner(const TopoDS_Face& tgtFace,
const TopoDS_Face& srcFace,
SMESH_Mesh * tgtMesh,
SMESH_Mesh * srcMesh,
const TAssocTool::TShapeShapeMap& shape2ShapeMap)
{
if ( !tgtFace.IsPartner( srcFace ))
return false;
// Fill map of src to tgt nodes with nodes on edges
map<const SMDS_MeshNode* , const SMDS_MeshNode*> src2tgtNodes;
map<const SMDS_MeshNode* , const SMDS_MeshNode*>::iterator srcN_tgtN;
for ( TopExp_Explorer srcEdge( srcFace, TopAbs_EDGE); srcEdge.More(); srcEdge.Next() )
{
const TopoDS_Shape& tgtEdge = shape2ShapeMap( srcEdge.Current() );
if ( !tgtEdge.IsPartner( srcEdge.Current() ))
return false;
map< double, const SMDS_MeshNode* > srcNodes, tgtNodes;
if ( !SMESH_Algo::GetSortedNodesOnEdge( srcMesh->GetMeshDS(),
TopoDS::Edge( srcEdge.Current() ),
/*ignoreMediumNodes = */true,
srcNodes )
||
!SMESH_Algo::GetSortedNodesOnEdge( tgtMesh->GetMeshDS(),
TopoDS::Edge( tgtEdge ),
/*ignoreMediumNodes = */true,
tgtNodes )
||
srcNodes.size() != tgtNodes.size())
return false;
map< double, const SMDS_MeshNode* >::iterator u_tn = tgtNodes.begin();
map< double, const SMDS_MeshNode* >::iterator u_sn = srcNodes.begin();
for ( ; u_tn != tgtNodes.end(); ++u_tn, ++u_sn)
src2tgtNodes.insert( make_pair( u_sn->second, u_tn->second ));
}
// Make new faces
// transformation to get location of target nodes from source ones
gp_Trsf srcTrsf = srcFace.Location();
gp_Trsf tgtTrsf = tgtFace.Location();
gp_Trsf trsf = srcTrsf.Inverted() * tgtTrsf;
// prepare the helper adding quadratic elements if necessary
SMESH_MesherHelper helper( *tgtMesh );
helper.IsQuadraticSubMesh( tgtFace );
helper.SetElementsOnShape( true );
const SMDS_MeshNode* nullNode = 0;
SMESHDS_SubMesh* srcSubDS = srcMesh->GetMeshDS()->MeshElements( srcFace );
SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
while ( elemIt->more() ) // loop on all mesh faces on srcFace
{
const SMDS_MeshElement* elem = elemIt->next();
vector< const SMDS_MeshNode* > tgtFaceNodes;
tgtFaceNodes.reserve( elem->NbNodes() );
SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
while ( nodeIt->more() ) // loop on nodes of the source element
{
const SMDS_MeshNode* srcNode = (const SMDS_MeshNode*) nodeIt->next();
srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
if ( srcN_tgtN->second == nullNode )
{
// create a new node
gp_Pnt tgtP = gp_Pnt(srcNode->X(),srcNode->Y(),srcNode->Z()).Transformed( trsf );
srcN_tgtN->second = helper.AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
}
tgtFaceNodes.push_back( srcN_tgtN->second );
}
// create a new face (with reversed orientation)
if ( tgtFaceNodes.size() == 3 )
helper.AddFace( tgtFaceNodes[0],tgtFaceNodes[2],tgtFaceNodes[1]);
else
helper.AddFace( tgtFaceNodes[0],tgtFaceNodes[3],tgtFaceNodes[2],tgtFaceNodes[1]);
}
return true;
}
} // namespace
//=======================================================================
//function : Compute
//purpose :
@ -405,6 +500,10 @@ bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape&
return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
}
// try to project from same face with different location
if ( projectPartner( tgtFace, srcFace, tgtMesh, srcMesh, shape2ShapeMap ))
return true;
// --------------------
// Prepare to mapping
// --------------------