-// Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2019 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
// Created : Tue Apr 30 18:00:36 2013
// Author : Edward AGAPOV (eap)
-// This file holds some low level algorithms extracted from SMESH_MeshEditor
+// Initially this file held some low level algorithms extracted from SMESH_MeshEditor
// to make them accessible from Controls package
#include "SMESH_MeshAlgos.hxx"
+#include "ObjectPool.hxx"
#include "SMDS_FaceOfNodes.hxx"
#include "SMDS_LinearEdge.hxx"
#include "SMDS_Mesh.hxx"
#include "SMDS_VolumeTool.hxx"
#include "SMESH_OctreeNode.hxx"
+#include <Utils_SALOME_Exception.hxx>
+
#include <GC_MakeSegment.hxx>
#include <GeomAPI_ExtremaCurveCurve.hxx>
#include <Geom_Line.hxx>
#include <IntAna_Quadric.hxx>
#include <gp_Lin.hxx>
#include <gp_Pln.hxx>
+#include <NCollection_DataMap.hxx>
#include <limits>
#include <numeric>
-using namespace std;
+#include <boost/container/flat_set.hpp>
//=======================================================================
/*!
/*!
* \brief Constructor
*/
- SMESH_NodeSearcherImpl( const SMDS_Mesh* theMesh )
+ SMESH_NodeSearcherImpl( const SMDS_Mesh* theMesh = 0,
+ SMDS_ElemIteratorPtr theElemIt = SMDS_ElemIteratorPtr() )
{
myMesh = ( SMDS_Mesh* ) theMesh;
TIDSortedNodeSet nodes;
if ( theMesh ) {
- SMDS_NodeIteratorPtr nIt = theMesh->nodesIterator(/*idInceasingOrder=*/true);
+ SMDS_NodeIteratorPtr nIt = theMesh->nodesIterator();
while ( nIt->more() )
nodes.insert( nodes.end(), nIt->next() );
}
+ else if ( theElemIt )
+ {
+ while ( theElemIt->more() )
+ {
+ const SMDS_MeshElement* e = theElemIt->next();
+ nodes.insert( e->begin_nodes(), e->end_nodes() );
+ }
+ }
myOctreeNode = new SMESH_OctreeNode(nodes) ;
// get max size of a leaf box
*/
const SMDS_MeshNode* FindClosestTo( const gp_Pnt& thePnt )
{
- map<double, const SMDS_MeshNode*> dist2Nodes;
+ std::map<double, const SMDS_MeshNode*> dist2Nodes;
myOctreeNode->NodesAround( thePnt.Coord(), dist2Nodes, myHalfLeafSize );
if ( !dist2Nodes.empty() )
return dist2Nodes.begin()->second;
- list<const SMDS_MeshNode*> nodes;
+
+ std::vector<const SMDS_MeshNode*> nodes;
//myOctreeNode->NodesAround( &tgtNode, &nodes, myHalfLeafSize );
double minSqDist = DBL_MAX;
if ( nodes.empty() ) // get all nodes of OctreeNode's closest to thePnt
{
// sort leafs by their distance from thePnt
- typedef map< double, SMESH_OctreeNode* > TDistTreeMap;
+ typedef std::multimap< double, SMESH_OctreeNode* > TDistTreeMap;
TDistTreeMap treeMap;
- list< SMESH_OctreeNode* > treeList;
- list< SMESH_OctreeNode* >::iterator trIt;
+ std::list< SMESH_OctreeNode* > treeList;
+ std::list< SMESH_OctreeNode* >::iterator trIt;
treeList.push_back( myOctreeNode );
gp_XYZ pointNode( thePnt.X(), thePnt.Y(), thePnt.Z() );
{
const Bnd_B3d& box = *tree->getBox();
double sqDist = thePnt.SquareDistance( 0.5 * ( box.CornerMin() + box.CornerMax() ));
- pair<TDistTreeMap::iterator,bool> it_in = treeMap.insert( make_pair( sqDist, tree ));
- if ( !it_in.second ) // not unique distance to box center
- treeMap.insert( it_in.first, make_pair( sqDist + 1e-13*treeMap.size(), tree ));
+ treeMap.insert( std::make_pair( sqDist, tree ));
}
}
// find distance after which there is no sense to check tree's
if ( sqDist_tree->first > sqLimit )
break;
SMESH_OctreeNode* tree = sqDist_tree->second;
- tree->NodesAround( tree->GetNodeIterator()->next(), &nodes );
+ tree->AllNodesAround( tree->GetNodeIterator()->next(), &nodes );
}
}
// find closest among nodes
minSqDist = DBL_MAX;
const SMDS_MeshNode* closestNode = 0;
- list<const SMDS_MeshNode*>::iterator nIt = nodes.begin();
- for ( ; nIt != nodes.end(); ++nIt ) {
- double sqDist = thePnt.SquareDistance( SMESH_TNodeXYZ( *nIt ) );
+ for ( size_t i = 0; i < nodes.size(); ++i )
+ {
+ double sqDist = thePnt.SquareDistance( SMESH_NodeXYZ( nodes[ i ]));
if ( minSqDist > sqDist ) {
- closestNode = *nIt;
+ closestNode = nodes[ i ];
minSqDist = sqDist;
}
}
return closestNode;
}
+ //---------------------------------------------------------------------
+ /*!
+ * \brief Finds nodes located within a tolerance near a point
+ */
+ int FindNearPoint(const gp_Pnt& point,
+ const double tolerance,
+ std::vector< const SMDS_MeshNode* >& foundNodes)
+ {
+ myOctreeNode->NodesAround( point.Coord(), foundNodes, tolerance );
+ return foundNodes.size();
+ }
+
//---------------------------------------------------------------------
/*!
* \brief Destructor
{
public:
+ typedef boost::container::flat_set< const SMDS_MeshElement*, TIDCompare > TElemSeq;
+
ElementBndBoxTree(const SMDS_Mesh& mesh,
SMDSAbs_ElementType elemType,
SMDS_ElemIteratorPtr theElemIt = SMDS_ElemIteratorPtr(),
double tolerance = NodeRadius );
- void getElementsNearPoint( const gp_Pnt& point, TIDSortedElemSet& foundElems );
- void getElementsNearLine ( const gp_Ax1& line, TIDSortedElemSet& foundElems);
- void getElementsInSphere ( const gp_XYZ& center,
- const double radius, TIDSortedElemSet& foundElems);
- size_t getSize() { return std::max( _size, _elements.size() ); }
- virtual ~ElementBndBoxTree();
+ void getElementsNearPoint( const gp_Pnt& point, TElemSeq& foundElems );
+ void getElementsNearLine ( const gp_Ax1& line, TElemSeq& foundElems );
+ void getElementsInBox ( const Bnd_B3d& box, TElemSeq& foundElems );
+ void getElementsInSphere ( const gp_XYZ& center, const double radius, TElemSeq& foundElems );
+ ElementBndBoxTree* getLeafAtPoint( const gp_XYZ& point );
+ int getNbElements();
protected:
- ElementBndBoxTree():_size(0) {}
+ ElementBndBoxTree() {}
SMESH_Octree* newChild() const { return new ElementBndBoxTree; }
void buildChildrenData();
Bnd_B3d* buildRootBox();
struct ElementBox : public Bnd_B3d
{
const SMDS_MeshElement* _element;
- int _refCount; // an ElementBox can be included in several tree branches
- ElementBox(const SMDS_MeshElement* elem, double tolerance);
+ void init(const SMDS_MeshElement* elem, double tolerance);
};
- vector< ElementBox* > _elements;
- size_t _size;
+ std::vector< ElementBox* > _elements;
+
+ typedef ObjectPool< ElementBox > TElementBoxPool;
+
+ //!< allocator of ElementBox's and SMESH_TreeLimit
+ struct LimitAndPool : public SMESH_TreeLimit
+ {
+ TElementBoxPool _elBoPool;
+ LimitAndPool():SMESH_TreeLimit( MaxLevel, /*minSize=*/0. ) {}
+ };
+ LimitAndPool* getLimitAndPool() const
+ {
+ SMESH_TreeLimit* limitAndPool = const_cast< SMESH_TreeLimit* >( myLimit );
+ return static_cast< LimitAndPool* >( limitAndPool );
+ }
};
//================================================================================
*/
//================================================================================
- ElementBndBoxTree::ElementBndBoxTree(const SMDS_Mesh& mesh, SMDSAbs_ElementType elemType, SMDS_ElemIteratorPtr theElemIt, double tolerance)
- :SMESH_Octree( new SMESH_TreeLimit( MaxLevel, /*minSize=*/0. ))
+ ElementBndBoxTree::ElementBndBoxTree(const SMDS_Mesh& mesh,
+ SMDSAbs_ElementType elemType,
+ SMDS_ElemIteratorPtr theElemIt,
+ double tolerance)
+ :SMESH_Octree( new LimitAndPool() )
{
int nbElems = mesh.GetMeshInfo().NbElements( elemType );
_elements.reserve( nbElems );
+ TElementBoxPool& elBoPool = getLimitAndPool()->_elBoPool;
+
+#ifdef _DEBUG_
+ if ( theElemIt && !theElemIt->more() )
+ std::cout << "WARNING: ElementBndBoxTree constructed on empty iterator!" << std::endl;
+#endif
+
SMDS_ElemIteratorPtr elemIt = theElemIt ? theElemIt : mesh.elementsIterator( elemType );
while ( elemIt->more() )
- _elements.push_back( new ElementBox( elemIt->next(),tolerance ));
-
+ {
+ ElementBox* eb = elBoPool.getNew();
+ eb->init( elemIt->next(), tolerance );
+ _elements.push_back( eb );
+ }
compute();
}
- //================================================================================
- /*!
- * \brief Destructor
- */
- //================================================================================
-
- ElementBndBoxTree::~ElementBndBoxTree()
- {
- for ( int i = 0; i < _elements.size(); ++i )
- if ( --_elements[i]->_refCount <= 0 )
- delete _elements[i];
- }
-
//================================================================================
/*!
* \brief Return the maximal box
Bnd_B3d* ElementBndBoxTree::buildRootBox()
{
Bnd_B3d* box = new Bnd_B3d;
- for ( int i = 0; i < _elements.size(); ++i )
+ for ( size_t i = 0; i < _elements.size(); ++i )
box->Add( *_elements[i] );
return box;
}
void ElementBndBoxTree::buildChildrenData()
{
- for ( int i = 0; i < _elements.size(); ++i )
+ for ( size_t i = 0; i < _elements.size(); ++i )
{
for (int j = 0; j < 8; j++)
{
if ( !_elements[i]->IsOut( *myChildren[j]->getBox() ))
- {
- _elements[i]->_refCount++;
((ElementBndBoxTree*)myChildren[j])->_elements.push_back( _elements[i]);
- }
}
- _elements[i]->_refCount--;
}
- _size = _elements.size();
+ //_size = _elements.size();
SMESHUtils::FreeVector( _elements ); // = _elements.clear() + free memory
for (int j = 0; j < 8; j++)
{
ElementBndBoxTree* child = static_cast<ElementBndBoxTree*>( myChildren[j]);
- if ( child->_elements.size() <= MaxNbElemsInLeaf )
+ if ((int) child->_elements.size() <= MaxNbElemsInLeaf )
child->myIsLeaf = true;
- if ( child->_elements.capacity() - child->_elements.size() > 1000 )
+ if ( child->isLeaf() && child->_elements.capacity() > child->_elements.size() )
SMESHUtils::CompactVector( child->_elements );
}
}
*/
//================================================================================
- void ElementBndBoxTree::getElementsNearPoint( const gp_Pnt& point,
- TIDSortedElemSet& foundElems)
+ void ElementBndBoxTree::getElementsNearPoint( const gp_Pnt& point, TElemSeq& foundElems)
{
if ( getBox()->IsOut( point.XYZ() ))
return;
if ( isLeaf() )
{
- for ( int i = 0; i < _elements.size(); ++i )
+ for ( size_t i = 0; i < _elements.size(); ++i )
if ( !_elements[i]->IsOut( point.XYZ() ))
foundElems.insert( _elements[i]->_element );
}
*/
//================================================================================
- void ElementBndBoxTree::getElementsNearLine( const gp_Ax1& line,
- TIDSortedElemSet& foundElems)
+ void ElementBndBoxTree::getElementsNearLine( const gp_Ax1& line, TElemSeq& foundElems )
{
if ( getBox()->IsOut( line ))
return;
if ( isLeaf() )
{
- for ( int i = 0; i < _elements.size(); ++i )
- if ( !_elements[i]->IsOut( line ))
+ for ( size_t i = 0; i < _elements.size(); ++i )
+ if ( !_elements[i]->IsOut( line ) )
foundElems.insert( _elements[i]->_element );
}
else
*/
//================================================================================
- void ElementBndBoxTree::getElementsInSphere ( const gp_XYZ& center,
- const double radius,
- TIDSortedElemSet& foundElems)
+ void ElementBndBoxTree::getElementsInSphere ( const gp_XYZ& center,
+ const double radius,
+ TElemSeq& foundElems)
{
if ( getBox()->IsOut( center, radius ))
return;
if ( isLeaf() )
{
- for ( int i = 0; i < _elements.size(); ++i )
+ for ( size_t i = 0; i < _elements.size(); ++i )
if ( !_elements[i]->IsOut( center, radius ))
foundElems.insert( _elements[i]->_element );
}
}
}
+ //================================================================================
+ /*!
+ * \brief Return elements from leaves intersecting the box
+ */
+ //================================================================================
+
+ void ElementBndBoxTree::getElementsInBox( const Bnd_B3d& box, TElemSeq& foundElems )
+ {
+ if ( getBox()->IsOut( box ))
+ return;
+
+ if ( isLeaf() )
+ {
+ for ( size_t i = 0; i < _elements.size(); ++i )
+ if ( !_elements[i]->IsOut( box ))
+ foundElems.insert( _elements[i]->_element );
+ }
+ else
+ {
+ for (int i = 0; i < 8; i++)
+ ((ElementBndBoxTree*) myChildren[i])->getElementsInBox( box, foundElems );
+ }
+ }
+
+ //================================================================================
+ /*!
+ * \brief Return a leaf including a point
+ */
+ //================================================================================
+
+ ElementBndBoxTree* ElementBndBoxTree::getLeafAtPoint( const gp_XYZ& point )
+ {
+ if ( getBox()->IsOut( point ))
+ return 0;
+
+ if ( isLeaf() )
+ {
+ return this;
+ }
+ else
+ {
+ for (int i = 0; i < 8; i++)
+ if ( ElementBndBoxTree* l = ((ElementBndBoxTree*) myChildren[i])->getLeafAtPoint( point ))
+ return l;
+ }
+ return 0;
+ }
+
+ //================================================================================
+ /*!
+ * \brief Return number of elements
+ */
+ //================================================================================
+
+ int ElementBndBoxTree::getNbElements()
+ {
+ int nb = 0;
+ if ( isLeaf() )
+ {
+ nb = _elements.size();
+ }
+ else
+ {
+ for (int i = 0; i < 8; i++)
+ nb += ((ElementBndBoxTree*) myChildren[i])->getNbElements();
+ }
+ return nb;
+ }
+
//================================================================================
/*!
* \brief Construct the element box
*/
//================================================================================
- ElementBndBoxTree::ElementBox::ElementBox(const SMDS_MeshElement* elem, double tolerance)
+ void ElementBndBoxTree::ElementBox::init(const SMDS_MeshElement* elem, double tolerance)
{
_element = elem;
- _refCount = 1;
SMDS_ElemIteratorPtr nIt = elem->nodesIterator();
while ( nIt->more() )
- Add( SMESH_TNodeXYZ( nIt->next() ));
+ Add( SMESH_NodeXYZ( nIt->next() ));
Enlarge( tolerance );
}
struct SMESH_ElementSearcherImpl: public SMESH_ElementSearcher
{
- SMDS_Mesh* _mesh;
- SMDS_ElemIteratorPtr _meshPartIt;
- ElementBndBoxTree* _ebbTree;
- SMESH_NodeSearcherImpl* _nodeSearcher;
- SMDSAbs_ElementType _elementType;
- double _tolerance;
- bool _outerFacesFound;
- set<const SMDS_MeshElement*> _outerFaces; // empty means "no internal faces at all"
-
- SMESH_ElementSearcherImpl( SMDS_Mesh& mesh, SMDS_ElemIteratorPtr elemIt=SMDS_ElemIteratorPtr())
- : _mesh(&mesh),_meshPartIt(elemIt),_ebbTree(0),_nodeSearcher(0),_tolerance(-1),_outerFacesFound(false) {}
+ SMDS_Mesh* _mesh;
+ SMDS_ElemIteratorPtr _meshPartIt;
+ ElementBndBoxTree* _ebbTree [SMDSAbs_NbElementTypes];
+ int _ebbTreeHeight[SMDSAbs_NbElementTypes];
+ SMESH_NodeSearcherImpl* _nodeSearcher;
+ SMDSAbs_ElementType _elementType;
+ double _tolerance;
+ bool _outerFacesFound;
+ std::set<const SMDS_MeshElement*> _outerFaces; // empty means "no internal faces at all"
+
+ SMESH_ElementSearcherImpl( SMDS_Mesh& mesh,
+ double tol=-1,
+ SMDS_ElemIteratorPtr elemIt=SMDS_ElemIteratorPtr())
+ : _mesh(&mesh),_meshPartIt(elemIt),_nodeSearcher(0),_tolerance(tol),_outerFacesFound(false)
+ {
+ for ( int i = 0; i < SMDSAbs_NbElementTypes; ++i )
+ {
+ _ebbTree[i] = NULL;
+ _ebbTreeHeight[i] = -1;
+ }
+ _elementType = SMDSAbs_All;
+ }
virtual ~SMESH_ElementSearcherImpl()
{
- if ( _ebbTree ) delete _ebbTree; _ebbTree = 0;
+ for ( int i = 0; i < SMDSAbs_NbElementTypes; ++i )
+ {
+ delete _ebbTree[i]; _ebbTree[i] = NULL;
+ }
if ( _nodeSearcher ) delete _nodeSearcher; _nodeSearcher = 0;
}
- virtual int FindElementsByPoint(const gp_Pnt& point,
- SMDSAbs_ElementType type,
- vector< const SMDS_MeshElement* >& foundElements);
+ virtual int FindElementsByPoint(const gp_Pnt& point,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElements);
virtual TopAbs_State GetPointState(const gp_Pnt& point);
virtual const SMDS_MeshElement* FindClosestTo( const gp_Pnt& point,
SMDSAbs_ElementType type );
- void GetElementsNearLine( const gp_Ax1& line,
- SMDSAbs_ElementType type,
- vector< const SMDS_MeshElement* >& foundElems);
+ virtual void GetElementsNearLine( const gp_Ax1& line,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElems);
+ virtual void GetElementsInSphere( const gp_XYZ& center,
+ const double radius,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElems);
+ virtual void GetElementsInBox( const Bnd_B3d& box,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElems);
+ virtual gp_XYZ Project(const gp_Pnt& point,
+ SMDSAbs_ElementType type,
+ const SMDS_MeshElement** closestElem);
double getTolerance();
bool getIntersParamOnLine(const gp_Lin& line, const SMDS_MeshElement* face,
const double tolerance, double & param);
{
return _outerFaces.empty() || _outerFaces.count(face);
}
+ int getTreeHeight()
+ {
+ if ( _ebbTreeHeight[ _elementType ] < 0 )
+ _ebbTreeHeight[ _elementType ] = _ebbTree[ _elementType ]->getHeight();
+ return _ebbTreeHeight[ _elementType ];
+ }
+
struct TInters //!< data of intersection of the line and the mesh face (used in GetPointState())
{
const SMDS_MeshElement* _face;
double boxSize = _nodeSearcher->getTree()->maxSize();
_tolerance = 1e-8 * boxSize/* / meshInfo.NbNodes()*/;
}
- else if ( _ebbTree && meshInfo.NbElements() > 0 )
+ else if ( _ebbTree[_elementType] && meshInfo.NbElements() > 0 )
{
- double boxSize = _ebbTree->maxSize();
+ double boxSize = _ebbTree[_elementType]->maxSize();
_tolerance = 1e-8 * boxSize/* / meshInfo.NbElements()*/;
}
if ( _tolerance == 0 )
}
else
{
- SMDS_ElemIteratorPtr elemIt =
- _mesh->elementsIterator( SMDSAbs_ElementType( complexType ));
+ SMDS_ElemIteratorPtr elemIt = _mesh->elementsIterator( SMDSAbs_ElementType( complexType ));
const SMDS_MeshElement* elem = elemIt->next();
- SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
+ SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
SMESH_TNodeXYZ n1( nodeIt->next() );
elemSize = 0;
while ( nodeIt->more() )
{
double dist = n1.Distance( static_cast<const SMDS_MeshNode*>( nodeIt->next() ));
- elemSize = max( dist, elemSize );
+ elemSize = std::max( dist, elemSize );
}
}
_tolerance = 1e-4 * elemSize;
{
GC_MakeSegment edge( SMESH_TNodeXYZ( face->GetNode( i )),
SMESH_TNodeXYZ( face->GetNode( (i+1)%nbNodes) ));
- anExtCC.Init( lineCurve, edge);
+ anExtCC.Init( lineCurve, edge.Value() );
if ( anExtCC.NbExtrema() > 0 && anExtCC.LowerDistance() <= tol)
{
- Quantity_Parameter pl, pe;
+ Standard_Real pl, pe;
anExtCC.LowerDistanceParameters( pl, pe );
param += pl;
if ( ++nbInts == 2 )
// and BTW find out if there are internal faces at all.
// checked links and links where outer boundary meets internal one
- set< SMESH_TLink > visitedLinks, seamLinks;
+ std::set< SMESH_TLink > visitedLinks, seamLinks;
// links to treat with already visited faces sharing them
- list < TFaceLink > startLinks;
+ std::list < TFaceLink > startLinks;
// load startLinks with the first outerFace
startLinks.push_back( TFaceLink( outerFace->GetNode(0), outerFace->GetNode(1), outerFace));
// direction from the link inside outerFace
gp_Vec dirInOF = gp_Vec( ofNorm ) ^ n1n2;
// sort all other faces by angle with the dirInOF
- map< double, const SMDS_MeshElement* > angle2Face;
- set< const SMDS_MeshElement*, TIDCompare >::const_iterator face = faces.begin();
+ std::map< double, const SMDS_MeshElement* > angle2Face;
+ std::set< const SMDS_MeshElement*, TIDCompare >::const_iterator face = faces.begin();
for ( ; face != faces.end(); ++face )
{
+ if ( *face == outerFace ) continue;
if ( !SMESH_MeshAlgos::FaceNormal( *face, fNorm, /*normalized=*/false ))
continue;
gp_Vec dirInF = gp_Vec( fNorm ) ^ n1n2;
double angle = dirInOF.AngleWithRef( dirInF, n1n2 );
if ( angle < 0 ) angle += 2. * M_PI;
- angle2Face.insert( make_pair( angle, *face ));
+ angle2Face.insert( std::make_pair( angle, *face ));
}
if ( !angle2Face.empty() )
outerFace2 = angle2Face.begin()->second;
}
}
- // store the found outer face and add its links to continue seaching from
+ // store the found outer face and add its links to continue searching from
if ( outerFace2 )
{
- _outerFaces.insert( outerFace );
- int nbNodes = outerFace2->NbNodes()/( outerFace2->IsQuadratic() ? 2 : 1 );
+ _outerFaces.insert( outerFace2 );
+ int nbNodes = outerFace2->NbCornerNodes();
for ( int i = 0; i < nbNodes; ++i )
{
SMESH_TLink link2( outerFace2->GetNode(i), outerFace2->GetNode((i+1)%nbNodes));
//=======================================================================
int SMESH_ElementSearcherImpl::
-FindElementsByPoint(const gp_Pnt& point,
- SMDSAbs_ElementType type,
- vector< const SMDS_MeshElement* >& foundElements)
+FindElementsByPoint(const gp_Pnt& point,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElements)
{
foundElements.clear();
+ _elementType = type;
double tolerance = getTolerance();
if ( type == SMDSAbs_Node || type == SMDSAbs_0DElement || type == SMDSAbs_Ball)
{
if ( !_nodeSearcher )
- _nodeSearcher = new SMESH_NodeSearcherImpl( _mesh );
-
- const SMDS_MeshNode* closeNode = _nodeSearcher->FindClosestTo( point );
- if ( !closeNode ) return foundElements.size();
-
- if ( point.Distance( SMESH_TNodeXYZ( closeNode )) > tolerance )
- return foundElements.size(); // to far from any node
+ {
+ if ( _meshPartIt )
+ _nodeSearcher = new SMESH_NodeSearcherImpl( 0, _meshPartIt );
+ else
+ _nodeSearcher = new SMESH_NodeSearcherImpl( _mesh );
+ }
+ std::vector< const SMDS_MeshNode* > foundNodes;
+ _nodeSearcher->FindNearPoint( point, tolerance, foundNodes );
if ( type == SMDSAbs_Node )
{
- foundElements.push_back( closeNode );
+ foundElements.assign( foundNodes.begin(), foundNodes.end() );
}
else
{
- SMDS_ElemIteratorPtr elemIt = closeNode->GetInverseElementIterator( type );
- while ( elemIt->more() )
- foundElements.push_back( elemIt->next() );
+ for ( size_t i = 0; i < foundNodes.size(); ++i )
+ {
+ SMDS_ElemIteratorPtr elemIt = foundNodes[i]->GetInverseElementIterator( type );
+ while ( elemIt->more() )
+ foundElements.push_back( elemIt->next() );
+ }
}
}
// =================================================================================
else // elements more complex than 0D
{
- if ( !_ebbTree || _elementType != type )
+ if ( !_ebbTree[type] )
{
- if ( _ebbTree ) delete _ebbTree;
- _ebbTree = new ElementBndBoxTree( *_mesh, _elementType = type, _meshPartIt, tolerance );
+ _ebbTree[_elementType] = new ElementBndBoxTree( *_mesh, type, _meshPartIt, tolerance );
}
- TIDSortedElemSet suspectElems;
- _ebbTree->getElementsNearPoint( point, suspectElems );
- TIDSortedElemSet::iterator elem = suspectElems.begin();
+ ElementBndBoxTree::TElemSeq suspectElems;
+ _ebbTree[ type ]->getElementsNearPoint( point, suspectElems );
+ ElementBndBoxTree::TElemSeq::iterator elem = suspectElems.begin();
for ( ; elem != suspectElems.end(); ++elem )
if ( !SMESH_MeshAlgos::IsOut( *elem, point, tolerance ))
foundElements.push_back( *elem );
SMDSAbs_ElementType type )
{
const SMDS_MeshElement* closestElem = 0;
+ _elementType = type;
- if ( type == SMDSAbs_Face || type == SMDSAbs_Volume )
+ if ( type == SMDSAbs_Face ||
+ type == SMDSAbs_Volume ||
+ type == SMDSAbs_Edge )
{
- if ( !_ebbTree || _elementType != type )
- {
- if ( _ebbTree ) delete _ebbTree;
- _ebbTree = new ElementBndBoxTree( *_mesh, _elementType = type, _meshPartIt );
- }
- TIDSortedElemSet suspectElems;
- _ebbTree->getElementsNearPoint( point, suspectElems );
+ ElementBndBoxTree*& ebbTree = _ebbTree[ type ];
+ if ( !ebbTree )
+ ebbTree = new ElementBndBoxTree( *_mesh, type, _meshPartIt );
+
+ ElementBndBoxTree::TElemSeq suspectElems;
+ ebbTree->getElementsNearPoint( point, suspectElems );
- if ( suspectElems.empty() && _ebbTree->maxSize() > 0 )
+ if ( suspectElems.empty() && ebbTree->maxSize() > 0 )
{
- gp_Pnt boxCenter = 0.5 * ( _ebbTree->getBox()->CornerMin() +
- _ebbTree->getBox()->CornerMax() );
+ gp_Pnt boxCenter = 0.5 * ( ebbTree->getBox()->CornerMin() +
+ ebbTree->getBox()->CornerMax() );
double radius = -1;
- if ( _ebbTree->getBox()->IsOut( point.XYZ() ))
- radius = point.Distance( boxCenter ) - 0.5 * _ebbTree->maxSize();
+ if ( ebbTree->getBox()->IsOut( point.XYZ() ))
+ radius = point.Distance( boxCenter ) - 0.5 * ebbTree->maxSize();
if ( radius < 0 )
- radius = _ebbTree->maxSize() / pow( 2., _ebbTree->getHeight()) / 2;
- while ( suspectElems.empty() )
+ radius = ebbTree->maxSize() / pow( 2., getTreeHeight()) / 2;
+ while ( suspectElems.empty() && radius < 1e100 )
{
- _ebbTree->getElementsInSphere( point.XYZ(), radius, suspectElems );
+ ebbTree->getElementsInSphere( point.XYZ(), radius, suspectElems );
radius *= 1.1;
}
}
double minDist = std::numeric_limits<double>::max();
- multimap< double, const SMDS_MeshElement* > dist2face;
- TIDSortedElemSet::iterator elem = suspectElems.begin();
+ std::multimap< double, const SMDS_MeshElement* > dist2face;
+ ElementBndBoxTree::TElemSeq::iterator elem = suspectElems.begin();
for ( ; elem != suspectElems.end(); ++elem )
{
double dist = SMESH_MeshAlgos::GetDistance( *elem, point );
if ( dist < minDist + 1e-10)
{
minDist = dist;
- dist2face.insert( dist2face.begin(), make_pair( dist, *elem ));
+ dist2face.insert( dist2face.begin(), std::make_pair( dist, *elem ));
}
}
if ( !dist2face.empty() )
{
- multimap< double, const SMDS_MeshElement* >::iterator d2f = dist2face.begin();
+ std::multimap< double, const SMDS_MeshElement* >::iterator d2f = dist2face.begin();
closestElem = d2f->second;
// if there are several elements at the same distance, select one
// with GC closest to the point
TopAbs_State SMESH_ElementSearcherImpl::GetPointState(const gp_Pnt& point)
{
+ _elementType = SMDSAbs_Face;
+
double tolerance = getTolerance();
- if ( !_ebbTree || _elementType != SMDSAbs_Face )
- {
- if ( _ebbTree ) delete _ebbTree;
- _ebbTree = new ElementBndBoxTree( *_mesh, _elementType = SMDSAbs_Face, _meshPartIt );
- }
+
+ ElementBndBoxTree*& ebbTree = _ebbTree[ SMDSAbs_Face ];
+ if ( !ebbTree )
+ ebbTree = new ElementBndBoxTree( *_mesh, _elementType, _meshPartIt );
+
// Algo: analyse transition of a line starting at the point through mesh boundary;
// try three lines parallel to axis of the coordinate system and perform rough
// analysis. If solution is not clear perform thorough analysis.
const int nbAxes = 3;
gp_Dir axisDir[ nbAxes ] = { gp::DX(), gp::DY(), gp::DZ() };
- map< double, TInters > paramOnLine2TInters[ nbAxes ];
- list< TInters > tangentInters[ nbAxes ]; // of faces whose plane includes the line
- multimap< int, int > nbInt2Axis; // to find the simplest case
+ std::map< double, TInters > paramOnLine2TInters[ nbAxes ];
+ std::list< TInters > tangentInters[ nbAxes ]; // of faces whose plane includes the line
+ std::multimap< int, int > nbInt2Axis; // to find the simplest case
for ( int axis = 0; axis < nbAxes; ++axis )
{
gp_Ax1 lineAxis( point, axisDir[axis]);
gp_Lin line ( lineAxis );
- TIDSortedElemSet suspectFaces; // faces possibly intersecting the line
- _ebbTree->getElementsNearLine( lineAxis, suspectFaces );
+ ElementBndBoxTree::TElemSeq suspectFaces; // faces possibly intersecting the line
+ ebbTree->getElementsNearLine( lineAxis, suspectFaces );
// Intersect faces with the line
- map< double, TInters > & u2inters = paramOnLine2TInters[ axis ];
- TIDSortedElemSet::iterator face = suspectFaces.begin();
+ std::map< double, TInters > & u2inters = paramOnLine2TInters[ axis ];
+ ElementBndBoxTree::TElemSeq::iterator face = suspectFaces.begin();
for ( ; face != suspectFaces.end(); ++face )
{
// get face plane
}
else if ( ! intersection.IsParallel() && intersection.NbPoints() > 0 )
{
+ double tol = 1e-4 * Sqrt( fNorm.Modulus() );
gp_Pnt intersectionPoint = intersection.Point(1);
- if ( !SMESH_MeshAlgos::IsOut( *face, intersectionPoint, tolerance ))
- u2inters.insert(make_pair( intersection.ParamOnConic(1), TInters( *face, fNorm )));
+ if ( !SMESH_MeshAlgos::IsOut( *face, intersectionPoint, tol ))
+ u2inters.insert( std::make_pair( intersection.ParamOnConic(1), TInters( *face, fNorm )));
}
}
// Analyse intersections roughly
if ( nbIntBeforePoint == 1 || nbIntAfterPoint == 1 )
return TopAbs_IN;
- nbInt2Axis.insert( make_pair( min( nbIntBeforePoint, nbIntAfterPoint ), axis ));
+ nbInt2Axis.insert( std::make_pair( std::min( nbIntBeforePoint, nbIntAfterPoint ), axis ));
if ( _outerFacesFound ) break; // pass to thorough analysis
for ( int hasPositionInfo = _outerFacesFound; hasPositionInfo < 2; ++hasPositionInfo )
{
- multimap< int, int >::const_iterator nb_axis = nbInt2Axis.begin();
+ std::multimap< int, int >::const_iterator nb_axis = nbInt2Axis.begin();
for ( ; nb_axis != nbInt2Axis.end(); ++nb_axis )
{
int axis = nb_axis->second;
- map< double, TInters > & u2inters = paramOnLine2TInters[ axis ];
+ std::map< double, TInters > & u2inters = paramOnLine2TInters[ axis ];
gp_Ax1 lineAxis( point, axisDir[axis]);
gp_Lin line ( lineAxis );
// add tangent intersections to u2inters
double param;
- list< TInters >::const_iterator tgtInt = tangentInters[ axis ].begin();
+ std::list< TInters >::const_iterator tgtInt = tangentInters[ axis ].begin();
for ( ; tgtInt != tangentInters[ axis ].end(); ++tgtInt )
if ( getIntersParamOnLine( line, tgtInt->_face, tolerance, param ))
- u2inters.insert(make_pair( param, *tgtInt ));
+ u2inters.insert( std::make_pair( param, *tgtInt ));
tangentInters[ axis ].clear();
// Count intersections before and after the point excluding touching ones.
// If hasPositionInfo we count intersections of outer boundary only
int nbIntBeforePoint = 0, nbIntAfterPoint = 0;
- double f = numeric_limits<double>::max(), l = -numeric_limits<double>::max();
- map< double, TInters >::iterator u_int1 = u2inters.begin(), u_int2 = u_int1;
+ double f = std::numeric_limits<double>::max(), l = -std::numeric_limits<double>::max();
+ std::map< double, TInters >::iterator u_int1 = u2inters.begin(), u_int2 = u_int1;
bool ok = ! u_int1->second._coincides;
while ( ok && u_int1 != u2inters.end() )
{
// skip tangent intersections
int nbTgt = 0;
- const SMDS_MeshElement* prevFace = u_int1->second._face;
- while ( ok && u_int2->second._coincides )
+ if ( u_int2 != u2inters.end() )
{
- if ( SMESH_MeshAlgos::GetCommonNodes(prevFace , u_int2->second._face).empty() )
- ok = false;
- else
+ const SMDS_MeshElement* prevFace = u_int1->second._face;
+ while ( ok && u_int2->second._coincides )
{
- nbTgt++;
- u_int2++;
- ok = ( u_int2 != u2inters.end() );
+ if ( SMESH_MeshAlgos::GetCommonNodes(prevFace , u_int2->second._face).empty() )
+ ok = false;
+ else
+ {
+ nbTgt++;
+ u_int2++;
+ ok = ( u_int2 != u2inters.end() );
+ }
}
}
if ( !ok ) break;
// decide if we skipped a touching intersection
if ( nbSamePnt + nbTgt > 0 )
{
- double minDot = numeric_limits<double>::max(), maxDot = -numeric_limits<double>::max();
- map< double, TInters >::iterator u_int = u_int1;
+ double minDot = std::numeric_limits<double>::max(), maxDot = -minDot;
+ std::map< double, TInters >::iterator u_int = u_int1;
for ( ; u_int != u_int2; ++u_int )
{
if ( u_int->second._coincides ) continue;
if ( !hasPositionInfo )
{
// gather info on faces position - is face in the outer boundary or not
- map< double, TInters > & u2inters = paramOnLine2TInters[ 0 ];
+ std::map< double, TInters > & u2inters = paramOnLine2TInters[ 0 ];
findOuterBoundary( u2inters.begin()->second._face );
}
*/
//=======================================================================
-void SMESH_ElementSearcherImpl::GetElementsNearLine( const gp_Ax1& line,
- SMDSAbs_ElementType type,
- vector< const SMDS_MeshElement* >& foundElems)
+void SMESH_ElementSearcherImpl::
+GetElementsNearLine( const gp_Ax1& line,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElems)
+{
+ _elementType = type;
+ ElementBndBoxTree*& ebbTree = _ebbTree[ type ];
+ if ( !ebbTree )
+ ebbTree = new ElementBndBoxTree( *_mesh, _elementType, _meshPartIt );
+
+ ElementBndBoxTree::TElemSeq elems;
+ ebbTree->getElementsNearLine( line, elems );
+
+ foundElems.insert( foundElems.end(), elems.begin(), elems.end() );
+}
+
+//=======================================================================
+/*
+ * Return elements whose bounding box intersects a sphere
+ */
+//=======================================================================
+
+void SMESH_ElementSearcherImpl::
+GetElementsInSphere( const gp_XYZ& center,
+ const double radius,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElems)
+{
+ _elementType = type;
+ ElementBndBoxTree*& ebbTree = _ebbTree[ type ];
+ if ( !ebbTree )
+ ebbTree = new ElementBndBoxTree( *_mesh, _elementType, _meshPartIt );
+
+ ElementBndBoxTree::TElemSeq elems;
+ ebbTree->getElementsInSphere( center, radius, elems );
+
+ foundElems.insert( foundElems.end(), elems.begin(), elems.end() );
+}
+
+//=======================================================================
+/*
+ * Return elements whose bounding box intersects a given bounding box
+ */
+//=======================================================================
+
+void SMESH_ElementSearcherImpl::
+GetElementsInBox( const Bnd_B3d& box,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElems)
+{
+ _elementType = type;
+ ElementBndBoxTree*& ebbTree = _ebbTree[ type ];
+ if ( !ebbTree )
+ ebbTree = new ElementBndBoxTree( *_mesh, _elementType, _meshPartIt, getTolerance() );
+
+ ElementBndBoxTree::TElemSeq elems;
+ ebbTree->getElementsInBox( box, elems );
+
+ foundElems.insert( foundElems.end(), elems.begin(), elems.end() );
+}
+
+//=======================================================================
+/*
+ * \brief Return a projection of a given point to a mesh.
+ * Optionally return the closest element
+ */
+//=======================================================================
+
+gp_XYZ SMESH_ElementSearcherImpl::Project(const gp_Pnt& point,
+ SMDSAbs_ElementType type,
+ const SMDS_MeshElement** closestElem)
{
- if ( !_ebbTree || _elementType != type )
+ _elementType = type;
+ if ( _mesh->GetMeshInfo().NbElements( _elementType ) == 0 )
+ throw SALOME_Exception( LOCALIZED( "No elements of given type in the mesh" ));
+
+ ElementBndBoxTree*& ebbTree = _ebbTree[ _elementType ];
+ if ( !ebbTree )
+ ebbTree = new ElementBndBoxTree( *_mesh, _elementType, _meshPartIt );
+
+ gp_XYZ p = point.XYZ();
+ ElementBndBoxTree* ebbLeaf = ebbTree->getLeafAtPoint( p );
+ const Bnd_B3d* box = ebbLeaf ? ebbLeaf->getBox() : ebbTree->getBox();
+ gp_XYZ pMin = box->CornerMin(), pMax = box->CornerMax();
+ double radius = Precision::Infinite();
+ if ( ebbLeaf || !box->IsOut( p ))
+ {
+ for ( int i = 1; i <= 3; ++i )
+ {
+ double d = 0.5 * ( pMax.Coord(i) - pMin.Coord(i) );
+ if ( d > Precision::Confusion() )
+ radius = Min( d, radius );
+ }
+ if ( !ebbLeaf )
+ radius /= ebbTree->getHeight( /*full=*/true );
+ }
+ else // p outside of box
+ {
+ for ( int i = 1; i <= 3; ++i )
+ {
+ double d = 0;
+ if ( point.Coord(i) < pMin.Coord(i) )
+ d = pMin.Coord(i) - point.Coord(i);
+ else if ( point.Coord(i) > pMax.Coord(i) )
+ d = point.Coord(i) - pMax.Coord(i);
+ if ( d > Precision::Confusion() )
+ radius = Min( d, radius );
+ }
+ }
+
+ ElementBndBoxTree::TElemSeq elems;
+ ebbTree->getElementsInSphere( p, radius, elems );
+ while ( elems.empty() && radius < 1e100 )
{
- if ( _ebbTree ) delete _ebbTree;
- _ebbTree = new ElementBndBoxTree( *_mesh, _elementType = type, _meshPartIt );
+ radius *= 1.1;
+ ebbTree->getElementsInSphere( p, radius, elems );
+ }
+ gp_XYZ proj, bestProj;
+ const SMDS_MeshElement* elem = 0;
+ double minDist = Precision::Infinite();
+ ElementBndBoxTree::TElemSeq::iterator e = elems.begin();
+ for ( ; e != elems.end(); ++e )
+ {
+ double d = SMESH_MeshAlgos::GetDistance( *e, point, &proj );
+ if ( d < minDist )
+ {
+ bestProj = proj;
+ elem = *e;
+ minDist = d;
+ }
}
- TIDSortedElemSet suspectFaces; // elements possibly intersecting the line
- _ebbTree->getElementsNearLine( line, suspectFaces );
- foundElems.assign( suspectFaces.begin(), suspectFaces.end());
+ if ( minDist > radius )
+ {
+ ElementBndBoxTree::TElemSeq elems2;
+ ebbTree->getElementsInSphere( p, minDist, elems2 );
+ for ( e = elems2.begin(); e != elems2.end(); ++e )
+ {
+ if ( elems.count( *e ))
+ continue;
+ double d = SMESH_MeshAlgos::GetDistance( *e, point, &proj );
+ if ( d < minDist )
+ {
+ bestProj = proj;
+ elem = *e;
+ minDist = d;
+ }
+ }
+ }
+ if ( closestElem ) *closestElem = elem;
+
+ return bestProj;
}
//=======================================================================
// get ordered nodes
- vector< gp_XYZ > xyz;
- vector<const SMDS_MeshNode*> nodeList;
+ std::vector< SMESH_TNodeXYZ > xyz; xyz.reserve( element->NbNodes()+1 );
- SMDS_ElemIteratorPtr nodeIt = element->nodesIterator();
- if ( element->IsQuadratic() ) {
- nodeIt = element->interlacedNodesElemIterator();
- // if (const SMDS_VtkFace* f=dynamic_cast<const SMDS_VtkFace*>(element))
- // nodeIt = f->interlacedNodesElemIterator();
- // else if (const SMDS_VtkEdge* e =dynamic_cast<const SMDS_VtkEdge*>(element))
- // nodeIt = e->interlacedNodesElemIterator();
- }
- while ( nodeIt->more() )
- {
- SMESH_TNodeXYZ node = nodeIt->next();
- xyz.push_back( node );
- nodeList.push_back(node._node);
- }
+ SMDS_NodeIteratorPtr nodeIt = element->interlacedNodesIterator();
+ for ( int i = 0; nodeIt->more(); ++i )
+ xyz.push_back( SMESH_TNodeXYZ( nodeIt->next() ));
- int i, nbNodes = (int) nodeList.size(); // central node of biquadratic is missing
+ int i, nbNodes = (int) xyz.size(); // central node of biquadratic is missing
if ( element->GetType() == SMDSAbs_Face ) // --------------------------------------------------
{
// compute face normal
gp_Vec faceNorm(0,0,0);
xyz.push_back( xyz.front() );
- nodeList.push_back( nodeList.front() );
for ( i = 0; i < nbNodes; ++i )
{
gp_Vec edge1( xyz[i+1], xyz[i]);
gp_Vec edge2( xyz[i+1], xyz[(i+2)%nbNodes] );
faceNorm += edge1 ^ edge2;
}
- double normSize = faceNorm.Magnitude();
- if ( normSize <= tol )
+ double fNormSize = faceNorm.Magnitude();
+ if ( fNormSize <= tol )
{
// degenerated face: point is out if it is out of all face edges
for ( i = 0; i < nbNodes; ++i )
{
- SMDS_LinearEdge edge( nodeList[i], nodeList[i+1] );
+ SMDS_LinearEdge edge( xyz[i]._node, xyz[i+1]._node );
if ( !IsOut( &edge, point, tol ))
return false;
}
return true;
}
- faceNorm /= normSize;
+ faceNorm /= fNormSize;
// check if the point lays on face plane
gp_Vec n2p( xyz[0], point );
- if ( fabs( n2p * faceNorm ) > tol )
- return true; // not on face plane
+ double dot = n2p * faceNorm;
+ if ( Abs( dot ) > tol ) // not on face plane
+ {
+ bool isOut = true;
+ if ( nbNodes > 3 ) // maybe the face is not planar
+ {
+ double elemThick = 0;
+ for ( i = 1; i < nbNodes; ++i )
+ {
+ gp_Vec n2n( xyz[0], xyz[i] );
+ elemThick = Max( elemThick, Abs( n2n * faceNorm ));
+ }
+ isOut = Abs( dot ) > elemThick + tol;
+ }
+ if ( isOut )
+ return isOut;
+ }
// check if point is out of face boundary:
// define it by closest transition of a ray point->infinity through face boundary
// to find intersections of the ray with the boundary.
gp_Vec ray = n2p;
gp_Vec plnNorm = ray ^ faceNorm;
- normSize = plnNorm.Magnitude();
- if ( normSize <= tol ) return false; // point coincides with the first node
- plnNorm /= normSize;
- // for each node of the face, compute its signed distance to the plane
- vector<double> dist( nbNodes + 1);
+ double n2pSize = plnNorm.Magnitude();
+ if ( n2pSize <= tol ) return false; // point coincides with the first node
+ if ( n2pSize * n2pSize > fNormSize * 100 ) return true; // point is very far
+ plnNorm /= n2pSize;
+ // for each node of the face, compute its signed distance to the cutting plane
+ std::vector<double> dist( nbNodes + 1);
for ( i = 0; i < nbNodes; ++i )
{
gp_Vec n2p( xyz[i], point );
dist.back() = dist.front();
// find the closest intersection
int iClosest = -1;
- double rClosest, distClosest = 1e100;;
+ double rClosest = 0, distClosest = 1e100;
gp_Pnt pClosest;
for ( i = 0; i < nbNodes; ++i )
{
double r;
- if ( fabs( dist[i]) < tol )
+ if ( fabs( dist[i] ) < tol )
r = 0.;
else if ( fabs( dist[i+1]) < tol )
r = 1.;
else
continue; // no intersection
gp_Pnt pInt = xyz[i] * (1.-r) + xyz[i+1] * r;
- gp_Vec p2int ( point, pInt);
- if ( p2int * ray > -tol ) // right half-space
+ gp_Vec p2int( point, pInt);
+ double intDist = p2int.SquareMagnitude();
+ if ( intDist < distClosest )
{
- double intDist = p2int.SquareMagnitude();
- if ( intDist < distClosest )
- {
- iClosest = i;
- rClosest = r;
- pClosest = pInt;
- distClosest = intDist;
- }
+ iClosest = i;
+ rClosest = r;
+ pClosest = pInt;
+ distClosest = intDist;
}
}
if ( iClosest < 0 )
if ( rClosest > 0. && rClosest < 1. ) // not node intersection
return out;
- // ray pass through a face node; analyze transition through an adjacent edge
+ // the ray passes through a face node; analyze transition through an adjacent edge
gp_Pnt p1 = xyz[ (rClosest == 0.) ? ((iClosest+nbNodes-1) % nbNodes) : (iClosest+1) ];
gp_Pnt p2 = xyz[ (rClosest == 0.) ? iClosest : ((iClosest+2) % nbNodes) ];
gp_Vec edgeAdjacent( p1, p2 );
bool covexCorner = ( edgeNorm * edgeAdjacent * (rClosest==1. ? 1. : -1.)) < 0;
return covexCorner ? (out || out2) : (out && out2);
}
+
if ( element->GetType() == SMDSAbs_Edge ) // --------------------------------------------------
{
// point is out of edge if it is NOT ON any straight part of edge
// (we consider quadratic edge as being composed of two straight parts)
for ( i = 1; i < nbNodes; ++i )
{
- gp_Vec edge( xyz[i-1], xyz[i]);
- gp_Vec n1p ( xyz[i-1], point);
- double dist = ( edge ^ n1p ).Magnitude() / edge.Magnitude();
- if ( dist > tol )
+ gp_Vec edge( xyz[i-1], xyz[i] );
+ gp_Vec n1p ( xyz[i-1], point );
+ double u = ( edge * n1p ) / edge.SquareMagnitude(); // param [0,1] on the edge
+ if ( u <= 0. ) {
+ if ( n1p.SquareMagnitude() < tol * tol )
+ return false;
continue;
- gp_Vec n2p( xyz[i], point );
- if ( fabs( edge.Magnitude() - n1p.Magnitude() - n2p.Magnitude()) > tol )
+ }
+ if ( u >= 1. ) {
+ if ( point.SquareDistance( xyz[i] ) < tol * tol )
+ return false;
+ continue;
+ }
+ gp_XYZ proj = ( 1. - u ) * xyz[i-1] + u * xyz[i]; // projection of the point on the edge
+ double dist2 = point.SquareDistance( proj );
+ if ( dist2 > tol * tol )
continue;
return false; // point is ON this part
}
return true;
}
+
// Node or 0D element -------------------------------------------------------------------------
{
gp_Vec n2p ( xyz[0], point );
- return n2p.Magnitude() <= tol;
+ return n2p.SquareMagnitude() > tol * tol;
}
return true;
}
// . RIGHT .
// . .
enum PositionName { POS_LEFT = 1, POS_VERTEX = 2, POS_RIGHT = 4, //POS_ON = 8,
- POS_ALL = POS_LEFT | POS_RIGHT | POS_VERTEX };
+ POS_ALL = POS_LEFT | POS_RIGHT | POS_VERTEX,
+ POS_MAX = POS_RIGHT };
struct PointPos
{
PositionName _name;
//================================================================================
/*!
- * \brief Return of a point relative to a segment
+ * \brief Return position of a point relative to a segment
* \param point2D - the point to analyze position of
- * \param xyVec - end points of segments
+ * \param segEnds - end points of segments
* \param index0 - 0-based index of the first point of segment
* \param posToFindOut - flags of positions to detect
* \retval PointPos - point position
//=======================================================================
double SMESH_MeshAlgos::GetDistance( const SMDS_MeshElement* elem,
- const gp_Pnt& point )
+ const gp_Pnt& point,
+ gp_XYZ* closestPnt )
{
switch ( elem->GetType() )
{
case SMDSAbs_Volume:
- return GetDistance( dynamic_cast<const SMDS_MeshVolume*>( elem ), point);
+ return GetDistance( static_cast<const SMDS_MeshVolume*>( elem ), point, closestPnt );
case SMDSAbs_Face:
- return GetDistance( dynamic_cast<const SMDS_MeshFace*>( elem ), point);
+ return GetDistance( static_cast<const SMDS_MeshFace*>( elem ), point, closestPnt );
case SMDSAbs_Edge:
- return GetDistance( dynamic_cast<const SMDS_MeshEdge*>( elem ), point);
+ return GetDistance( static_cast<const SMDS_MeshEdge*>( elem ), point, closestPnt );
case SMDSAbs_Node:
+ if ( closestPnt ) *closestPnt = SMESH_TNodeXYZ( elem );
return point.Distance( SMESH_TNodeXYZ( elem ));
+ default:;
}
return -1;
}
//=======================================================================
double SMESH_MeshAlgos::GetDistance( const SMDS_MeshFace* face,
- const gp_Pnt& point )
+ const gp_Pnt& point,
+ gp_XYZ* closestPnt )
{
- double badDistance = -1;
+ const double badDistance = -1;
if ( !face ) return badDistance;
+ int nbCorners = face->NbCornerNodes();
+ if ( nbCorners > 3 )
+ {
+ std::vector< const SMDS_MeshNode* > nodes;
+ int nbTria = SMESH_MeshAlgos::Triangulate().GetTriangles( face, nodes );
+
+ double minDist = Precision::Infinite();
+ gp_XYZ cp;
+ for ( int i = 0; i < 3 * nbTria; i += 3 )
+ {
+ SMDS_FaceOfNodes triangle( nodes[i], nodes[i+1], nodes[i+2] );
+ double dist = GetDistance( &triangle, point, closestPnt );
+ if ( dist < minDist )
+ {
+ minDist = dist;
+ if ( closestPnt )
+ cp = *closestPnt;
+ }
+ }
+
+ if ( closestPnt )
+ *closestPnt = cp;
+ return minDist;
+ }
+
// coordinates of nodes (medium nodes, if any, ignored)
typedef SMDS_StdIterator< SMESH_TNodeXYZ, SMDS_ElemIteratorPtr > TXyzIterator;
- vector<gp_XYZ> xyz( TXyzIterator( face->nodesIterator()), TXyzIterator() );
- xyz.resize( face->NbCornerNodes()+1 );
+ std::vector<gp_XYZ> xyz( TXyzIterator( face->nodesIterator()), TXyzIterator() );
+ xyz.resize( 4 );
// transformation to get xyz[0] lies on the origin, xyz[1] lies on the Z axis,
// and xyz[2] lies in the XZ plane. This is to pass to 2D space on XZ plane.
trsf.SetTransformation( tgtCS );
// move all the nodes to 2D
- vector<gp_XY> xy( xyz.size() );
- for ( size_t i = 0;i < xyz.size()-1; ++i )
+ std::vector<gp_XY> xy( xyz.size() );
+ for ( size_t i = 0; i < 3; ++i )
{
gp_XYZ p3d = xyz[i];
trsf.Transforms( p3d );
trsf.Transforms( tmpPnt );
gp_XY point2D( tmpPnt.X(), tmpPnt.Z() );
- // loop on segments of the face to analyze point position ralative to the face
- set< PointPos > pntPosSet;
+ // loop on edges of the face to analyze point position ralative to the face
+ std::vector< PointPos > pntPosByType[ POS_MAX + 1 ];
for ( size_t i = 1; i < xy.size(); ++i )
{
PointPos pos = getPointPosition( point2D, &xy[0], i-1 );
- pntPosSet.insert( pos );
+ pntPosByType[ pos._name ].push_back( pos );
}
// compute distance
- PointPos pos = *pntPosSet.begin();
- // cout << "Face " << face->GetID() << " DIST: ";
- switch ( pos._name )
- {
- case POS_LEFT: {
- // point is most close to a segment
- gp_Vec p0p1( point, xyz[ pos._index ] );
- gp_Vec p1p2( xyz[ pos._index ], xyz[ pos._index+1 ]); // segment vector
- p1p2.Normalize();
- double projDist = p0p1 * p1p2; // distance projected to the segment
- gp_Vec projVec = p1p2 * projDist;
- gp_Vec distVec = p0p1 - projVec;
- // cout << distVec.Magnitude() << ", SEG " << face->GetNode(pos._index)->GetID()
- // << " - " << face->GetNodeWrap(pos._index+1)->GetID() << endl;
- return distVec.Magnitude();
- }
- case POS_RIGHT: {
- // point is inside the face
- double distToFacePlane = tmpPnt.Y();
- // cout << distToFacePlane << ", INSIDE " << endl;
- return Abs( distToFacePlane );
+
+ double dist = badDistance;
+
+ if ( pntPosByType[ POS_LEFT ].size() > 0 ) // point is most close to an edge
+ {
+ PointPos& pos = pntPosByType[ POS_LEFT ][0];
+
+ gp_Vec edge( xyz[ pos._index ], xyz[ pos._index+1 ]);
+ gp_Vec n1p ( xyz[ pos._index ], point );
+ double u = ( edge * n1p ) / edge.SquareMagnitude(); // param [0,1] on the edge
+ gp_XYZ proj = xyz[ pos._index ] + u * edge.XYZ(); // projection on the edge
+ dist = point.Distance( proj );
+ if ( closestPnt ) *closestPnt = proj;
}
- case POS_VERTEX: {
- // point is most close to a node
- gp_Vec distVec( point, xyz[ pos._index ]);
- // cout << distVec.Magnitude() << " VERTEX " << face->GetNode(pos._index)->GetID() << endl;
- return distVec.Magnitude();
+
+ else if ( pntPosByType[ POS_RIGHT ].size() >= 2 ) // point is inside the face
+ {
+ dist = Abs( tmpPnt.Y() );
+ if ( closestPnt )
+ {
+ if ( dist < std::numeric_limits<double>::min() ) {
+ *closestPnt = point.XYZ();
+ }
+ else {
+ tmpPnt.SetY( 0 );
+ trsf.Inverted().Transforms( tmpPnt );
+ *closestPnt = tmpPnt;
+ }
+ }
}
+
+ else if ( pntPosByType[ POS_VERTEX ].size() > 0 ) // point is most close to a node
+ {
+ double minDist2 = Precision::Infinite();
+ for ( size_t i = 0; i < pntPosByType[ POS_VERTEX ].size(); ++i )
+ {
+ PointPos& pos = pntPosByType[ POS_VERTEX ][i];
+
+ double d2 = point.SquareDistance( xyz[ pos._index ]);
+ if ( minDist2 > d2 )
+ {
+ if ( closestPnt ) *closestPnt = xyz[ pos._index ];
+ minDist2 = d2;
+ }
+ }
+ dist = Sqrt( minDist2 );
}
- return badDistance;
+
+ return dist;
}
//=======================================================================
*/
//=======================================================================
-double SMESH_MeshAlgos::GetDistance( const SMDS_MeshEdge* edge, const gp_Pnt& point )
+double SMESH_MeshAlgos::GetDistance( const SMDS_MeshEdge* seg,
+ const gp_Pnt& point,
+ gp_XYZ* closestPnt )
{
- throw SALOME_Exception(LOCALIZED("not implemented so far"));
+ double dist = Precision::Infinite();
+ if ( !seg ) return dist;
+
+ int i = 0, nbNodes = seg->NbNodes();
+
+ std::vector< SMESH_TNodeXYZ > xyz( nbNodes );
+ for ( SMDS_NodeIteratorPtr nodeIt = seg->interlacedNodesIterator(); nodeIt->more(); i++ )
+ xyz[ i ].Set( nodeIt->next() );
+
+ for ( i = 1; i < nbNodes; ++i )
+ {
+ gp_Vec edge( xyz[i-1], xyz[i] );
+ gp_Vec n1p ( xyz[i-1], point );
+ double d, u = ( edge * n1p ) / edge.SquareMagnitude(); // param [0,1] on the edge
+ if ( u <= 0. ) {
+ if (( d = n1p.SquareMagnitude() ) < dist ) {
+ dist = d;
+ if ( closestPnt ) *closestPnt = xyz[i-1];
+ }
+ }
+ else if ( u >= 1. ) {
+ if (( d = point.SquareDistance( xyz[i] )) < dist ) {
+ dist = d;
+ if ( closestPnt ) *closestPnt = xyz[i];
+ }
+ }
+ else {
+ gp_XYZ proj = xyz[i-1] + u * edge.XYZ(); // projection of the point on the edge
+ if (( d = point.SquareDistance( proj )) < dist ) {
+ dist = d;
+ if ( closestPnt ) *closestPnt = proj;
+ }
+ }
+ }
+ return Sqrt( dist );
}
//=======================================================================
*/
//=======================================================================
-double SMESH_MeshAlgos::GetDistance( const SMDS_MeshVolume* volume, const gp_Pnt& point )
+double SMESH_MeshAlgos::GetDistance( const SMDS_MeshVolume* volume,
+ const gp_Pnt& point,
+ gp_XYZ* closestPnt )
{
SMDS_VolumeTool vTool( volume );
vTool.SetExternalNormal();
double n[3], bc[3];
double minDist = 1e100, dist;
+ gp_XYZ closeP = point.XYZ();
+ bool isOut = false;
for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
{
// skip a facet with normal not "looking at" the point
!vTool.GetFaceBaryCenter( iF, bc[0], bc[1], bc[2] ))
continue;
gp_XYZ bcp = point.XYZ() - gp_XYZ( bc[0], bc[1], bc[2] );
- if ( gp_XYZ( n[0], n[1], n[2] ) * bcp < 1e-6 )
+ if ( gp_XYZ( n[0], n[1], n[2] ) * bcp < -1e-12 )
continue;
// find distance to a facet
case 3:
{
SMDS_FaceOfNodes tmpFace( nodes[0], nodes[ 1*iQ ], nodes[ 2*iQ ] );
- dist = GetDistance( &tmpFace, point );
+ dist = GetDistance( &tmpFace, point, closestPnt );
break;
}
case 4:
{
SMDS_FaceOfNodes tmpFace( nodes[0], nodes[ 1*iQ ], nodes[ 2*iQ ], nodes[ 3*iQ ]);
- dist = GetDistance( &tmpFace, point );
+ dist = GetDistance( &tmpFace, point, closestPnt );
break;
}
default:
- vector<const SMDS_MeshNode *> nvec( nodes, nodes + vTool.NbFaceNodes( iF ));
+ std::vector<const SMDS_MeshNode *> nvec( nodes, nodes + vTool.NbFaceNodes( iF ));
SMDS_PolygonalFaceOfNodes tmpFace( nvec );
- dist = GetDistance( &tmpFace, point );
+ dist = GetDistance( &tmpFace, point, closestPnt );
+ }
+ if ( dist < minDist )
+ {
+ minDist = dist;
+ isOut = true;
+ if ( closestPnt ) closeP = *closestPnt;
}
- minDist = Min( minDist, dist );
}
- return minDist;
+ if ( isOut )
+ {
+ if ( closestPnt ) *closestPnt = closeP;
+ return minDist;
+ }
+
+ return 0; // point is inside the volume
}
//================================================================================
const double t11 = T22, t12 = -T12, t21 = -T21, t22 = T11;
// vector
const double r11 = p.X()-t2.X(), r12 = p.Y()-t2.Y();
- // barycentric coordinates: mutiply matrix by vector
+ // barycentric coordinates: multiply matrix by vector
bc0 = (t11 * r11 + t12 * r12)/Tdet;
bc1 = (t21 * r11 + t22 * r12)/Tdet;
}
int* n2ind)
{
- int i1, i2;
+ int i1 = 0, i2 = 0;
const SMDS_MeshElement* face = 0;
SMDS_ElemIteratorPtr invElemIt = n1->GetInverseElementIterator(SMDSAbs_Face);
- //MESSAGE("n1->GetInverseElementIterator(SMDSAbs_Face) " << invElemIt);
while ( invElemIt->more() && !face ) // loop on inverse faces of n1
{
- //MESSAGE("in while ( invElemIt->more() && !face )");
const SMDS_MeshElement* elem = invElemIt->next();
if (avoidSet.count( elem ))
continue;
if ( !face && elem->IsQuadratic())
{
// analysis for quadratic elements using all nodes
- // const SMDS_VtkFace* F = dynamic_cast<const SMDS_VtkFace*>(elem);
- // if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
- // use special nodes iterator
- SMDS_ElemIteratorPtr anIter = elem->interlacedNodesElemIterator();
+ SMDS_NodeIteratorPtr anIter = elem->interlacedNodesIterator();
const SMDS_MeshNode* prevN = static_cast<const SMDS_MeshNode*>( anIter->next() );
for ( i1 = -1, i2 = 0; anIter->more() && !face; i1++, i2++ )
{
}
else if ( n2 == prevN && n1 == n )
{
- face = elem; swap( i1, i2 );
+ face = elem; std::swap( i1, i2 );
}
prevN = n;
}
return face;
}
+//================================================================================
+/*!
+ * Return sharp edges of faces and non-manifold ones. Optionally adds existing edges.
+ */
+//================================================================================
+
+std::vector< SMESH_MeshAlgos::Edge >
+SMESH_MeshAlgos::FindSharpEdges( SMDS_Mesh* theMesh,
+ double theAngle,
+ bool theAddExisting )
+{
+ std::vector< Edge > resultEdges;
+ if ( !theMesh ) return resultEdges;
+
+ typedef std::pair< bool, const SMDS_MeshNode* > TIsSharpAndMedium;
+ typedef NCollection_DataMap< SMESH_TLink, TIsSharpAndMedium, SMESH_TLink > TLinkSharpMap;
+
+ TLinkSharpMap linkIsSharp( theMesh->NbFaces() );
+ TIsSharpAndMedium sharpMedium( true, 0 );
+ bool & isSharp = sharpMedium.first;
+ const SMDS_MeshNode* & nMedium = sharpMedium.second;
+
+ if ( theAddExisting )
+ {
+ for ( SMDS_EdgeIteratorPtr edgeIt = theMesh->edgesIterator(); edgeIt->more(); )
+ {
+ const SMDS_MeshElement* edge = edgeIt->next();
+ nMedium = ( edge->IsQuadratic() ) ? edge->GetNode(2) : 0;
+ linkIsSharp.Bind( SMESH_TLink( edge->GetNode(0), edge->GetNode(1)), sharpMedium );
+ }
+ }
+
+ // check angles between face normals
+
+ const double angleCos = Cos( theAngle * M_PI / 180. ), angleCos2 = angleCos * angleCos;
+ gp_XYZ norm1, norm2;
+ std::vector< const SMDS_MeshNode* > faceNodes, linkNodes(2);
+ std::vector<const SMDS_MeshElement *> linkFaces;
+
+ int nbSharp = linkIsSharp.Extent();
+ for ( SMDS_FaceIteratorPtr faceIt = theMesh->facesIterator(); faceIt->more(); )
+ {
+ const SMDS_MeshElement* face = faceIt->next();
+ size_t nbCorners = face->NbCornerNodes();
+
+ faceNodes.assign( face->begin_nodes(), face->end_nodes() );
+ if ( faceNodes.size() == nbCorners )
+ faceNodes.resize( nbCorners * 2, 0 );
+
+ const SMDS_MeshNode* nPrev = faceNodes[ nbCorners-1 ];
+ for ( size_t i = 0; i < nbCorners; ++i )
+ {
+ SMESH_TLink link( nPrev, faceNodes[i] );
+ if ( !linkIsSharp.IsBound( link ))
+ {
+ linkNodes[0] = link.node1();
+ linkNodes[1] = link.node2();
+ linkFaces.clear();
+ theMesh->GetElementsByNodes( linkNodes, linkFaces, SMDSAbs_Face );
+
+ isSharp = false;
+ if ( linkFaces.size() > 2 )
+ {
+ isSharp = true;
+ }
+ else if ( linkFaces.size() == 2 &&
+ FaceNormal( linkFaces[0], norm1, /*normalize=*/false ) &&
+ FaceNormal( linkFaces[1], norm2, /*normalize=*/false ))
+ {
+ double dot = norm1 * norm2; // == cos * |norm1| * |norm2|
+ if (( dot < 0 ) == ( angleCos < 0 ))
+ {
+ double cos2 = dot * dot / norm1.SquareModulus() / norm2.SquareModulus();
+ isSharp = ( angleCos < 0 ) ? ( cos2 > angleCos2 ) : ( cos2 < angleCos2 );
+ }
+ else
+ {
+ isSharp = ( angleCos > 0 );
+ }
+ }
+ nMedium = faceNodes[( i-1+nbCorners ) % nbCorners + nbCorners ];
+
+ linkIsSharp.Bind( link, sharpMedium );
+ nbSharp += isSharp;
+ }
+
+ nPrev = faceNodes[i];
+ }
+ }
+
+ resultEdges.resize( nbSharp );
+ TLinkSharpMap::Iterator linkIsSharpIter( linkIsSharp );
+ for ( int i = 0; linkIsSharpIter.More() && i < nbSharp; linkIsSharpIter.Next() )
+ {
+ const SMESH_TLink& link = linkIsSharpIter.Key();
+ const TIsSharpAndMedium& isSharpMedium = linkIsSharpIter.Value();
+ if ( isSharpMedium.first )
+ {
+ Edge & edge = resultEdges[ i++ ];
+ edge._node1 = link.node1();
+ edge._node2 = link.node2();
+ edge._medium = isSharpMedium.second;
+ }
+ }
+
+ return resultEdges;
+}
+
+//================================================================================
+/*!
+ * Distribute all faces of the mesh between groups using given edges as group boundaries
+ */
+//================================================================================
+
+std::vector< std::vector< const SMDS_MeshElement* > >
+SMESH_MeshAlgos::SeparateFacesByEdges( SMDS_Mesh* theMesh, const std::vector< Edge >& theEdges )
+{
+ std::vector< std::vector< const SMDS_MeshElement* > > groups;
+ if ( !theMesh ) return groups;
+
+ // build map of face edges (SMESH_TLink) and their faces
+
+ typedef std::vector< const SMDS_MeshElement* > TFaceVec;
+ typedef NCollection_DataMap< SMESH_TLink, TFaceVec, SMESH_TLink > TFacesByLinks;
+ TFacesByLinks facesByLink( theMesh->NbFaces() );
+
+ std::vector< const SMDS_MeshNode* > faceNodes;
+ for ( SMDS_FaceIteratorPtr faceIt = theMesh->facesIterator(); faceIt->more(); )
+ {
+ const SMDS_MeshElement* face = faceIt->next();
+ size_t nbCorners = face->NbCornerNodes();
+
+ faceNodes.assign( face->begin_nodes(), face->end_nodes() );
+ faceNodes.resize( nbCorners + 1 );
+ faceNodes[ nbCorners ] = faceNodes[0];
+
+ face->setIsMarked( false );
+
+ for ( size_t i = 0; i < nbCorners; ++i )
+ {
+ SMESH_TLink link( faceNodes[i], faceNodes[i+1] );
+ TFaceVec* linkFaces = facesByLink.ChangeSeek( link );
+ if ( !linkFaces )
+ {
+ linkFaces = facesByLink.Bound( link, TFaceVec() );
+ linkFaces->reserve(2);
+ }
+ linkFaces->push_back( face );
+ }
+ }
+
+ // remove the given edges from facesByLink map
+
+ for ( size_t i = 0; i < theEdges.size(); ++i )
+ {
+ SMESH_TLink link( theEdges[i]._node1, theEdges[i]._node2 );
+ facesByLink.UnBind( link );
+ }
+
+ // faces connected via links of facesByLink map form a group
+
+ while ( !facesByLink.IsEmpty() )
+ {
+ groups.push_back( TFaceVec() );
+ TFaceVec & group = groups.back();
+
+ group.push_back( TFacesByLinks::Iterator( facesByLink ).Value()[0] );
+ group.back()->setIsMarked( true );
+
+ for ( size_t iF = 0; iF < group.size(); ++iF )
+ {
+ const SMDS_MeshElement* face = group[iF];
+ size_t nbCorners = face->NbCornerNodes();
+ faceNodes.assign( face->begin_nodes(), face->end_nodes() );
+ faceNodes.resize( nbCorners + 1 );
+ faceNodes[ nbCorners ] = faceNodes[0];
+
+ for ( size_t iN = 0; iN < nbCorners; ++iN )
+ {
+ SMESH_TLink link( faceNodes[iN], faceNodes[iN+1] );
+ if ( const TFaceVec* faces = facesByLink.Seek( link ))
+ {
+ const TFaceVec& faceNeighbors = *faces;
+ for ( size_t i = 0; i < faceNeighbors.size(); ++i )
+ if ( !faceNeighbors[i]->isMarked() )
+ {
+ group.push_back( faceNeighbors[i] );
+ faceNeighbors[i]->setIsMarked( true );
+ }
+ facesByLink.UnBind( link );
+ }
+ }
+ }
+ }
+
+ // find faces that are alone in its group; they were not in facesByLink
+
+ int nbInGroups = 0;
+ for ( size_t i = 0; i < groups.size(); ++i )
+ nbInGroups += groups[i].size();
+ if ( nbInGroups < theMesh->NbFaces() )
+ {
+ for ( SMDS_FaceIteratorPtr faceIt = theMesh->facesIterator(); faceIt->more(); )
+ {
+ const SMDS_MeshElement* face = faceIt->next();
+ if ( !face->isMarked() )
+ {
+ groups.push_back( TFaceVec() );
+ groups.back().push_back( face );
+ }
+ }
+ }
+
+ return groups;
+}
+
//================================================================================
/*!
* \brief Calculate normal of a mesh face
return false;
normal.SetCoord(0,0,0);
- int nbNodes = F->IsQuadratic() ? F->NbNodes()/2 : F->NbNodes();
+ int nbNodes = F->NbCornerNodes();
for ( int i = 0; i < nbNodes-2; ++i )
{
gp_XYZ p[3];
normal += ( p[2] - p[1] ) ^ ( p[0] - p[1] );
}
double size2 = normal.SquareModulus();
- bool ok = ( size2 > numeric_limits<double>::min() * numeric_limits<double>::min());
+ bool ok = ( size2 > std::numeric_limits<double>::min() * std::numeric_limits<double>::min());
if ( normalized && ok )
normal /= sqrt( size2 );
//purpose : Return nodes common to two elements
//=======================================================================
-vector< const SMDS_MeshNode*> SMESH_MeshAlgos::GetCommonNodes(const SMDS_MeshElement* e1,
- const SMDS_MeshElement* e2)
+std::vector< const SMDS_MeshNode*> SMESH_MeshAlgos::GetCommonNodes(const SMDS_MeshElement* e1,
+ const SMDS_MeshElement* e2)
{
- vector< const SMDS_MeshNode*> common;
+ std::vector< const SMDS_MeshNode*> common;
for ( int i = 0 ; i < e1->NbNodes(); ++i )
if ( e2->GetNodeIndex( e1->GetNode( i )) >= 0 )
common.push_back( e1->GetNode( i ));
return common;
}
+//================================================================================
+/*!
+ * \brief Return true if node1 encounters first in the face and node2, after
+ */
+//================================================================================
+
+bool SMESH_MeshAlgos::IsRightOrder( const SMDS_MeshElement* face,
+ const SMDS_MeshNode* node0,
+ const SMDS_MeshNode* node1 )
+{
+ int i0 = face->GetNodeIndex( node0 );
+ int i1 = face->GetNodeIndex( node1 );
+ if ( face->IsQuadratic() )
+ {
+ if ( face->IsMediumNode( node0 ))
+ {
+ i0 -= ( face->NbNodes()/2 - 1 );
+ i1 *= 2;
+ }
+ else
+ {
+ i1 -= ( face->NbNodes()/2 - 1 );
+ i0 *= 2;
+ }
+ }
+ int diff = i1 - i0;
+ return ( diff == 1 ) || ( diff == -face->NbNodes()+1 );
+}
+
+//=======================================================================
+/*!
+ * \brief Partition given 1D elements into groups of contiguous edges.
+ * A node where number of meeting edges != 2 is a group end.
+ * An optional startNode is used to orient groups it belongs to.
+ * \return a list of edge groups and a list of corresponding node groups.
+ * If a group is closed, the first and last nodes of the group are same.
+ */
+//=======================================================================
+
+void SMESH_MeshAlgos::Get1DBranches( SMDS_ElemIteratorPtr theEdgeIt,
+ TElemGroupVector& theEdgeGroups,
+ TNodeGroupVector& theNodeGroups,
+ const SMDS_MeshNode* theStartNode )
+{
+ if ( !theEdgeIt )
+ return;
+
+ // build map of nodes and their adjacent edges
+
+ typedef std::vector< const SMDS_MeshNode* > TNodeVec;
+ typedef std::vector< const SMDS_MeshElement* > TEdgeVec;
+ typedef NCollection_DataMap< const SMDS_MeshNode*, TEdgeVec, SMESH_Hasher > TEdgesByNodeMap;
+ TEdgesByNodeMap edgesByNode;
+
+ while ( theEdgeIt->more() )
+ {
+ const SMDS_MeshElement* edge = theEdgeIt->next();
+ if ( edge->GetType() != SMDSAbs_Edge )
+ continue;
+
+ const SMDS_MeshNode* nodes[2] = { edge->GetNode(0), edge->GetNode(1) };
+ for ( int i = 0; i < 2; ++i )
+ {
+ TEdgeVec* nodeEdges = edgesByNode.ChangeSeek( nodes[i] );
+ if ( !nodeEdges )
+ {
+ nodeEdges = edgesByNode.Bound( nodes[i], TEdgeVec() );
+ nodeEdges->reserve(2);
+ }
+ nodeEdges->push_back( edge );
+ }
+ }
+
+ if ( edgesByNode.IsEmpty() )
+ return;
+
+
+ // build edge branches
+
+ TElemGroupVector branches(2);
+ TNodeGroupVector nodeBranches(2);
+
+ while ( !edgesByNode.IsEmpty() )
+ {
+ if ( !theStartNode || !edgesByNode.IsBound( theStartNode ))
+ {
+ theStartNode = TEdgesByNodeMap::Iterator( edgesByNode ).Key();
+ }
+
+ size_t nbBranches = 0;
+ bool startIsBranchEnd = false;
+
+ while ( edgesByNode.IsBound( theStartNode ))
+ {
+ // initialize a new branch
+
+ ++nbBranches;
+ if ( branches.size() < nbBranches )
+ {
+ branches.push_back ( TEdgeVec() );
+ nodeBranches.push_back( TNodeVec() );
+ }
+ TEdgeVec & branch = branches [ nbBranches - 1 ];
+ TNodeVec & nodeBranch = nodeBranches[ nbBranches - 1 ];
+ branch.clear();
+ nodeBranch.clear();
+ {
+ TEdgeVec& edges = edgesByNode( theStartNode );
+ startIsBranchEnd = ( edges.size() != 2 );
+
+ int nbEdges = 0;
+ const SMDS_MeshElement* startEdge = 0;
+ for ( size_t i = 0; i < edges.size(); ++i )
+ {
+ if ( !startEdge && edges[i] )
+ {
+ startEdge = edges[i];
+ edges[i] = 0;
+ }
+ nbEdges += bool( edges[i] );
+ }
+ if ( nbEdges == 0 )
+ edgesByNode.UnBind( theStartNode );
+ if ( !startEdge )
+ continue;
+
+ branch.push_back( startEdge );
+
+ nodeBranch.push_back( theStartNode );
+ nodeBranch.push_back( branch.back()->GetNode(0) );
+ if ( nodeBranch.back() == theStartNode )
+ nodeBranch.back() = branch.back()->GetNode(1);
+ }
+
+ // fill the branch
+
+ bool isBranchEnd = false;
+ TEdgeVec* edgesPtr;
+
+ while (( !isBranchEnd ) && ( edgesPtr = edgesByNode.ChangeSeek( nodeBranch.back() )))
+ {
+ TEdgeVec& edges = *edgesPtr;
+
+ isBranchEnd = ( edges.size() != 2 );
+
+ const SMDS_MeshNode* lastNode = nodeBranch.back();
+
+ switch ( edges.size() )
+ {
+ case 1:
+ edgesByNode.UnBind( lastNode );
+ break;
+
+ case 2:
+ {
+ if ( const SMDS_MeshElement* nextEdge = edges[ edges[0] == branch.back() ])
+ {
+ branch.push_back( nextEdge );
+
+ const SMDS_MeshNode* nextNode = nextEdge->GetNode(0);
+ if ( nodeBranch.back() == nextNode )
+ nextNode = nextEdge->GetNode(1);
+ nodeBranch.push_back( nextNode );
+ }
+ edgesByNode.UnBind( lastNode );
+ break;
+ }
+
+ default:
+ int nbEdges = 0;
+ for ( size_t i = 0; i < edges.size(); ++i )
+ {
+ if ( edges[i] == branch.back() )
+ edges[i] = 0;
+ nbEdges += bool( edges[i] );
+ }
+ if ( nbEdges == 0 )
+ edgesByNode.UnBind( lastNode );
+ }
+ }
+ } // while ( edgesByNode.IsBound( theStartNode ))
+
+
+ // put the found branches to the result
+
+ if ( nbBranches == 2 && !startIsBranchEnd ) // join two branches starting at the same node
+ {
+ std::reverse( nodeBranches[0].begin(), nodeBranches[0].end() );
+ nodeBranches[0].pop_back();
+ nodeBranches[0].reserve( nodeBranches[0].size() + nodeBranches[1].size() );
+ nodeBranches[0].insert( nodeBranches[0].end(),
+ nodeBranches[1].begin(), nodeBranches[1].end() );
+
+ std::reverse( branches[0].begin(), branches[0].end() );
+ branches[0].reserve( branches[0].size() + branches[1].size() );
+ branches[0].insert( branches[0].end(), branches[1].begin(), branches[1].end() );
+
+ nodeBranches[1].clear();
+ branches[1].clear();
+ }
+
+ for ( size_t i = 0; i < nbBranches; ++i )
+ {
+ if ( branches[i].empty() )
+ continue;
+
+ theEdgeGroups.push_back( TEdgeVec() );
+ theEdgeGroups.back().swap( branches[i] );
+
+ theNodeGroups.push_back( TNodeVec() );
+ theNodeGroups.back().swap( nodeBranches[i] );
+ }
+
+ } // while ( !edgesByNode.IsEmpty() )
+
+ return;
+}
//=======================================================================
/*!
return new SMESH_NodeSearcherImpl( &mesh );
}
+//=======================================================================
+/*!
+ * \brief Return SMESH_NodeSearcher
+ */
+//=======================================================================
+
+SMESH_NodeSearcher* SMESH_MeshAlgos::GetNodeSearcher(SMDS_ElemIteratorPtr elemIt)
+{
+ return new SMESH_NodeSearcherImpl( 0, elemIt );
+}
+
//=======================================================================
/*!
* \brief Return SMESH_ElementSearcher
*/
//=======================================================================
-SMESH_ElementSearcher* SMESH_MeshAlgos::GetElementSearcher(SMDS_Mesh& mesh)
+SMESH_ElementSearcher* SMESH_MeshAlgos::GetElementSearcher(SMDS_Mesh& mesh,
+ double tolerance)
{
- return new SMESH_ElementSearcherImpl( mesh );
+ return new SMESH_ElementSearcherImpl( mesh, tolerance );
}
//=======================================================================
//=======================================================================
SMESH_ElementSearcher* SMESH_MeshAlgos::GetElementSearcher(SMDS_Mesh& mesh,
- SMDS_ElemIteratorPtr elemIt)
+ SMDS_ElemIteratorPtr elemIt,
+ double tolerance)
{
- return new SMESH_ElementSearcherImpl( mesh, elemIt );
+ return new SMESH_ElementSearcherImpl( mesh, tolerance, elemIt );
}
