1 // Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // HYDRO HYDROData_OctreeNode : Octree with Nodes set (from SMESH module)
24 // inherites class HYDROData_Octree
25 // File : HYDROData_OctreeNode.cxx
26 // Created : Tue Jan 16 16:00:00 2007
27 // Author : Nicolas Geimer & Aurelien Motteux (OCC)
30 #include "HYDROData_OctreeNode.hxx"
32 //#include "SMDS_SetIterator.hxx"
33 //#include "HYDROData_TypeDefs.hxx"
38 //===============================================================
40 * \brief Constructor : Build all the Octree using Compute()
41 * \param theNodes - Set of nodes, the Octree is built from this nodes
42 * \param maxLevel - Maximum level for the leaves
43 * \param maxNbNodes - Maximum number of nodes, a leaf can contain
44 * \param minBoxSize - Minimal size of the Octree Box
46 //================================================================
48 HYDROData_OctreeNode::HYDROData_OctreeNode (const Nodes3D& theNodes, const int maxLevel,
49 const int maxNbNodes , const double minBoxSize )
50 :HYDROData_Octree( new Limit( maxLevel,minBoxSize,maxNbNodes)),
56 //================================================================================
58 * \brief Constructor used to allocate a child
60 //================================================================================
62 HYDROData_OctreeNode::HYDROData_OctreeNode ():HYDROData_Octree()
67 //================================================================================
69 * \brief Return max number of nodes in a tree leaf
71 //================================================================================
73 int HYDROData_OctreeNode::getMaxNbNodes() const
75 return ((Limit*)myLimit)->myMaxNbNodes;
78 //==================================================================================
80 * \brief Construct an empty HYDROData_OctreeNode used by HYDROData_Octree::buildChildren()
82 //==================================================================================
84 HYDROData_Octree* HYDROData_OctreeNode::newChild() const
86 return new HYDROData_OctreeNode();
89 //======================================
91 * \brief Compute the first bounding box
93 * We take the max/min coord of the nodes
95 //======================================
97 Bnd_B3d* HYDROData_OctreeNode::buildRootBox()
99 Bnd_B3d* box = new Bnd_B3d;
100 Nodes3D::iterator it = myNodes.begin();
101 for (; it != myNodes.end(); it++) {
102 const gp_XYZ* n1 = *it;
106 if ( myNodes.size() <= getMaxNbNodes() )
112 //====================================================================================
114 * \brief Tells us if Node is inside the current box with the precision "precision"
116 * \param precision - The box is enlarged with this precision
117 * \retval bool - True if Node is in the box within precision
119 //====================================================================================
121 const bool HYDROData_OctreeNode::isInside (const gp_XYZ& p, const double precision)
124 return !(getBox()->IsOut(p));
125 Bnd_B3d BoxWithPrecision = *getBox();
126 BoxWithPrecision.Enlarge(precision);
127 return ! BoxWithPrecision.IsOut(p);
130 //================================================
132 * \brief Set the data of the children
133 * Shares the father's data with each of his child
135 //================================================
136 void HYDROData_OctreeNode::buildChildrenData()
138 gp_XYZ min = getBox()->CornerMin();
139 gp_XYZ max = getBox()->CornerMax();
140 gp_XYZ mid = (min + max)/2.;
142 Nodes3D::iterator it = myNodes.begin();
143 while (it != myNodes.end())
145 const gp_XYZ* n1 = *it;
146 int ChildBoxNum = getChildIndex( n1->X(), n1->Y(), n1->Z(), mid );
147 HYDROData_OctreeNode* myChild = dynamic_cast<HYDROData_OctreeNode*> (myChildren[ChildBoxNum]);
148 myChild->myNodes.push_back(n1);
150 it = myNodes.begin();
152 for (int i = 0; i < 8; i++)
154 HYDROData_OctreeNode* myChild = dynamic_cast<HYDROData_OctreeNode*> (myChildren[i]);
155 if ( myChild->myNodes.size() <= getMaxNbNodes() )
156 myChild->myIsLeaf = true;
160 //===================================================================
162 * \brief Return in Result a list of Nodes potentials to be near Node
164 * \param precision - precision used
165 * \param Result - list of Nodes potentials to be near Node
167 //====================================================================
168 void HYDROData_OctreeNode::NodesAround (const Node3D* Node,
169 list<const Node3D*>* Result,
170 const double precision)
173 if (isInside(p, precision))
177 Result->insert(Result->end(), myNodes.begin(), myNodes.end());
181 for (int i = 0; i < 8; i++)
183 HYDROData_OctreeNode* myChild = dynamic_cast<HYDROData_OctreeNode*> (myChildren[i]);
184 myChild->NodesAround(Node, Result, precision);
190 //================================================================================
192 * \brief Return in dist2Nodes nodes mapped to their square distance from Node
193 * \param node - node to find nodes closest to
194 * \param dist2Nodes - map of found nodes and their distances
195 * \param precision - radius of a sphere to check nodes inside
196 * \retval bool - true if an exact overlapping found !!!
198 //================================================================================
200 bool HYDROData_OctreeNode::NodesAround(const gp_XYZ &node,
201 map<double, const Node3D*>& dist2Nodes,
204 if ( !dist2Nodes.empty() )
205 precision = min ( precision, sqrt( dist2Nodes.begin()->first ));
206 else if ( precision == 0. )
207 precision = maxSize() / 2;
209 if (isInside(node, precision))
213 // first check a child containing node
214 gp_XYZ mid = (getBox()->CornerMin() + getBox()->CornerMax()) / 2.;
215 int nodeChild = getChildIndex( node.X(), node.Y(), node.Z(), mid );
216 if ( ((HYDROData_OctreeNode*) myChildren[nodeChild])->NodesAround(node, dist2Nodes, precision))
219 for (int i = 0; i < 8; i++)
220 if ( i != nodeChild )
221 if (((HYDROData_OctreeNode*) myChildren[i])->NodesAround(node, dist2Nodes, precision))
224 else if ( NbNodes() > 0 )
226 double minDist = precision * precision;
227 Nodes3D::iterator nIt = myNodes.begin();
228 for ( ; nIt != myNodes.end(); ++nIt )
230 const gp_XYZ* p = *nIt;
232 double dist2 = ( node - p2 ).SquareModulus();
233 if ( dist2 < minDist )
234 dist2Nodes.insert( make_pair( minDist = dist2, &p2 ));
236 // if ( dist2Nodes.size() > 1 ) // leave only closest node in dist2Nodes
237 // dist2Nodes.erase( ++dist2Nodes.begin(), dist2Nodes.end());
239 // true if an exact overlapping found
240 return ( sqrt( minDist ) <= precision * 1e-12 );
246 //=============================
248 * \brief Return in theGroupsOfNodes a list of group of nodes close to each other within theTolerance
249 * Search for all the nodes in theSetOfNodes
250 * Static Method : no need to create an HYDROData_OctreeNode
251 * \param theSetOfNodes - set of nodes we look at, modified during research
252 * \param theGroupsOfNodes - list of nodes closed to each other returned
253 * \param theTolerance - Precision used, default value is 0.00001
254 * \param maxLevel - Maximum level for HYDROData_OctreeNode constructed, default value is -1 (Infinite)
255 * \param maxNbNodes - maximum Nodes in a Leaf of the HYDROData_OctreeNode constructed, default value is 5
257 //=============================
258 //void HYDROData_OctreeNode::FindCoincidentNodes (TIDSortedNodeSet& theSetOfNodes,
259 // list< list< const SMDS_MeshNode*> >* theGroupsOfNodes,
260 // const double theTolerance,
261 // const int maxLevel,
262 // const int maxNbNodes)
264 // // VSR 14/10/2011: limit max number of the levels in order to avoid endless recursing
265 // const int MAX_LEVEL = 10;
266 // HYDROData_OctreeNode theOctreeNode(theSetOfNodes, maxLevel < 0 ? MAX_LEVEL : maxLevel, maxNbNodes, theTolerance);
267 // theOctreeNode.FindCoincidentNodes (&theSetOfNodes, theTolerance, theGroupsOfNodes);
270 //=============================
272 * \brief Return in theGroupsOfNodes a list of group of nodes close to each other within theTolerance
273 * Search for all the nodes in theSetOfNodes
274 * \note The Octree itself is also modified by this method
275 * \param theSetOfNodes - set of nodes we look at, modified during research
276 * \param theTolerance - Precision used
277 * \param theGroupsOfNodes - list of nodes closed to each other returned
279 //=============================
280 //void HYDROData_OctreeNode::FindCoincidentNodes ( TIDSortedNodeSet* theSetOfNodes,
281 // const double theTolerance,
282 // list< list< const SMDS_MeshNode*> >* theGroupsOfNodes)
284 // TIDSortedNodeSet::iterator it1 = theSetOfNodes->begin();
285 // list<const SMDS_MeshNode*>::iterator it2;
287 // while (it1 != theSetOfNodes->end())
289 // const SMDS_MeshNode * n1 = *it1;
291 // list<const SMDS_MeshNode*> ListOfCoincidentNodes;// Initialize the lists via a declaration, it's enough
293 // list<const SMDS_MeshNode*> * groupPtr = 0;
295 // // Searching for Nodes around n1 and put them in ListofCoincidentNodes.
296 // // Found nodes are also erased from theSetOfNodes
297 // FindCoincidentNodes(n1, theSetOfNodes, &ListOfCoincidentNodes, theTolerance);
299 // // We build a list {n1 + his neigbours} and add this list in theGroupsOfNodes
300 // for (it2 = ListOfCoincidentNodes.begin(); it2 != ListOfCoincidentNodes.end(); it2++)
302 // const SMDS_MeshNode* n2 = *it2;
305 // theGroupsOfNodes->push_back( list<const SMDS_MeshNode*>() );
306 // groupPtr = & theGroupsOfNodes->back();
307 // groupPtr->push_back( n1 );
309 // if (groupPtr->front() > n2)
310 // groupPtr->push_front( n2 );
312 // groupPtr->push_back( n2 );
314 // if (groupPtr != 0)
317 // theSetOfNodes->erase(it1);
318 // it1 = theSetOfNodes->begin();
322 //======================================================================================
324 * \brief Return a list of nodes closed to Node and remove it from SetOfNodes
325 * \note The Octree itself is also modified by this method
326 * \param Node - We're searching the nodes next to him.
327 * \param SetOfNodes - set of nodes in which we erase the found nodes
328 * \param Result - list of nodes closed to Node
329 * \param precision - Precision used
331 //======================================================================================
332 //void HYDROData_OctreeNode::FindCoincidentNodes (const SMDS_MeshNode * Node,
333 // TIDSortedNodeSet* SetOfNodes,
334 // list<const SMDS_MeshNode*>* Result,
335 // const double precision)
337 // gp_Pnt p1 (Node->X(), Node->Y(), Node->Z());
338 // bool isInsideBool = isInside( p1.XYZ(), precision );
342 // // I'm only looking in the leaves, since all the nodes are stored there.
345 // TIDSortedNodeSet::iterator it = myNodes.begin();
346 // const double tol2 = precision * precision;
349 // while (it != myNodes.end())
351 // const SMDS_MeshNode* n2 = *it;
352 // squareBool = false;
353 // // We're only looking at nodes with a superior Id.
355 // //if (Node->GetID() < n2->GetID())
356 // if (Node->GetID() != n2->GetID()) // JFA: for bug 0020185
358 // gp_Pnt p2 (n2->X(), n2->Y(), n2->Z());
359 // // Distance optimized computation
360 // squareBool = (p1.SquareDistance( p2 ) <= tol2);
362 // // If n2 inside the SquareDistance, we add it in Result and remove it from SetOfNodes and myNodes
365 // Result->insert(Result->begin(), n2);
366 // SetOfNodes->erase( n2 );
367 // myNodes.erase( *it++ ); // it++ goes forward and returns it's previous position
370 // if ( !squareBool )
373 // if ( !Result->empty() )
374 // myNodes.erase(Node); // JFA: for bug 0020185
378 // // If I'm not a leaf, I'm going to see my children !
379 // for (int i = 0; i < 8; i++)
381 // HYDROData_OctreeNode* myChild = dynamic_cast<HYDROData_OctreeNode*> (myChildren[i]);
382 // myChild->FindCoincidentNodes(Node, SetOfNodes, Result, precision);
388 //================================================================================
390 * \brief Update data according to node movement
392 //================================================================================
394 //void HYDROData_OctreeNode::UpdateByMoveNode( const Node3D* node, const gp_Pnt& toPnt )
398 // Nodes3D::iterator pNode = myNodes.find( node );
399 // bool nodeInMe = ( pNode != myNodes.end() );
401 // bool pointInMe = isInside( toPnt.Coord(), 1e-10 );
403 // if ( pointInMe != nodeInMe )
406 // myNodes.insert( node );
408 // myNodes.erase( node );
411 // else if ( myChildren )
413 // gp_XYZ mid = (getBox()->CornerMin() + getBox()->CornerMax()) / 2.;
414 // int nodeChild = getChildIndex( node->X(), node->Y(), node->Z(), mid );
415 // int pointChild = getChildIndex( toPnt.X(), toPnt.Y(), toPnt.Z(), mid );
416 // if ( nodeChild != pointChild )
418 // ((HYDROData_OctreeNode*) myChildren[ nodeChild ])->UpdateByMoveNode( node, toPnt );
419 // ((HYDROData_OctreeNode*) myChildren[ pointChild ])->UpdateByMoveNode( node, toPnt );
424 //================================================================================
426 * \brief Return iterator over children
428 //================================================================================
429 //HYDROData_OctreeNodeIteratorPtr HYDROData_OctreeNode::GetChildrenIterator()
431 // return HYDROData_OctreeNodeIteratorPtr
432 // ( new SMDS_SetIterator< HYDROData_OctreeNode*, TBaseTree** >
433 // ( myChildren, (( isLeaf() || !myChildren ) ? myChildren : &myChildren[ 8 ] )));
436 //================================================================================
438 * \brief Return nodes iterator
440 //================================================================================
441 //SMDS_NodeIteratorPtr HYDROData_OctreeNode::GetNodeIterator()
443 // return SMDS_NodeIteratorPtr
444 // ( new SMDS_SetIterator< SMDS_pNode, TIDSortedNodeSet::const_iterator >
445 // ( myNodes.begin(), myNodes.size() ? myNodes.end() : myNodes.begin()));