-// Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2016 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
/*!
* \brief Constructor
*/
- SMESH_NodeSearcherImpl( const SMDS_Mesh* theMesh )
+ SMESH_NodeSearcherImpl( const SMDS_Mesh* theMesh = 0,
+ SMDS_ElemIteratorPtr theElemIt = SMDS_ElemIteratorPtr() )
{
myMesh = ( SMDS_Mesh* ) theMesh;
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
void GetElementsNearLine( const gp_Ax1& line,
SMDSAbs_ElementType type,
vector< const SMDS_MeshElement* >& foundElems);
+ void GetElementsInSphere( const gp_XYZ& center,
+ const double radius,
+ SMDSAbs_ElementType type,
+ vector< const SMDS_MeshElement* >& foundElems);
double getTolerance();
bool getIntersParamOnLine(const gp_Lin& line, const SMDS_MeshElement* face,
const double tolerance, double & param);
{
return _outerFaces.empty() || _outerFaces.count(face);
}
+
struct TInters //!< data of intersection of the line and the mesh face (used in GetPointState())
{
const SMDS_MeshElement* _face;
{
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;
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;
// store the found outer face and add its links to continue seaching 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));
if ( type == SMDSAbs_Node || type == SMDSAbs_0DElement || type == SMDSAbs_Ball)
{
if ( !_nodeSearcher )
- _nodeSearcher = new SMESH_NodeSearcherImpl( _mesh );
-
+ {
+ 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 );
}
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 ))
+ if ( !SMESH_MeshAlgos::IsOut( *face, intersectionPoint, tol ))
u2inters.insert(make_pair( intersection.ParamOnConic(1), TInters( *face, fNorm )));
}
}
foundElems.assign( suspectFaces.begin(), suspectFaces.end());
}
+//=======================================================================
+/*
+ * Return elements whose bounding box intersects a sphere
+ */
+//=======================================================================
+
+void SMESH_ElementSearcherImpl::GetElementsInSphere( const gp_XYZ& center,
+ const double radius,
+ SMDSAbs_ElementType type,
+ vector< const SMDS_MeshElement* >& foundElems)
+{
+ if ( !_ebbTree || _elementType != type )
+ {
+ if ( _ebbTree ) delete _ebbTree;
+ _ebbTree = new ElementBndBoxTree( *_mesh, _elementType = type, _meshPartIt );
+ }
+ TIDSortedElemSet suspectFaces; // elements possibly intersecting the line
+ _ebbTree->getElementsInSphere( center, radius, suspectFaces );
+ foundElems.assign( suspectFaces.begin(), suspectFaces.end() );
+}
+
//=======================================================================
/*!
* \brief Return true if the point is IN or ON of the element
// get ordered nodes
- vector< SMESH_TNodeXYZ > xyz;
+ vector< SMESH_TNodeXYZ > xyz; xyz.reserve( element->NbNodes()+1 );
SMDS_ElemIteratorPtr nodeIt = element->interlacedNodesElemIterator();
- while ( nodeIt->more() )
- {
- SMESH_TNodeXYZ node = nodeIt->next();
- xyz.push_back( node );
- }
+ for ( int i = 0; nodeIt->more(); ++i )
+ xyz.push_back( SMESH_TNodeXYZ( nodeIt->next() ));
int i, nbNodes = (int) xyz.size(); // central node of biquadratic is missing
// 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
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
+ // for each node of the face, compute its signed distance to the cutting plane
vector<double> dist( nbNodes + 1);
for ( i = 0; i < nbNodes; ++i )
{
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 )
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
}
return true;
}
+
// Node or 0D element -------------------------------------------------------------------------
{
gp_Vec n2p ( xyz[0], point );
- return n2p.SquareMagnitude() <= tol * tol;
+ return n2p.SquareMagnitude() > tol * tol;
}
return true;
}
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
