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0021543: EDF 1978 SMESH: Viscous layer for 2D meshes
Derive SMESH_Octree from a template SMESH_Tree
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@ -20,7 +20,7 @@
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// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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//
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// SMESH SMESH_Octree : global Octree implementation
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// SMESH SMESH_Octree : Octree implementation
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// File : SMESH_Octree.cxx
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// Created : Tue Jan 16 16:00:00 2007
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// Author : Nicolas Geimer & Aurélien Motteux(OCC)
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@ -35,136 +35,28 @@
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*/
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//===========================================================================
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SMESH_Octree::SMESH_Octree (SMESH_Octree::Limit* limit):
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myChildren(NULL),
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myFather(NULL),
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myIsLeaf( false ),
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myLimit( limit ),
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myLevel(0),
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myBox(NULL)
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SMESH_Octree::SMESH_Octree (SMESH_TreeLimit* limit): TBaseTree( limit )
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{
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}
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//================================================================================
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/*!
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* \brief Compute the Octree
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*/
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//================================================================================
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void SMESH_Octree::compute()
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{
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if ( myLevel==0 )
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{
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myBox = buildRootBox();
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if ( myLimit->myMinBoxSize > 0. && maxSize() <= myLimit->myMinBoxSize )
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myIsLeaf = true;
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else
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buildChildren();
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}
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}
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//======================================
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/*!
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* \brief SMESH_Octree Destructor
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*/
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//======================================
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SMESH_Octree::~SMESH_Octree ()
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{
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if(myChildren != NULL)
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{
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if(!isLeaf())
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{
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for(int i = 0; i<8; i++)
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delete myChildren[i];
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delete[] myChildren;
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myChildren = 0;
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}
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}
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if ( myBox )
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delete myBox;
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myBox = 0;
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if ( level() == 0 )
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delete myLimit;
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myLimit = 0;
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}
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//=================================================================
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/*!
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* \brief Build the 8 children boxes and call buildChildrenData()
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* \brief Allocate a bndbox according to childIndex. childIndex is zero based
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*/
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//=================================================================
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void SMESH_Octree::buildChildren()
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Bnd_B3d* SMESH_Octree::newChildBox(int childIndex) const
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{
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if ( isLeaf() ) return;
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myChildren = new SMESH_Octree*[8];
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gp_XYZ min = myBox->CornerMin();
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gp_XYZ max = myBox->CornerMax();
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gp_XYZ min = getBox()->CornerMin();
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gp_XYZ max = getBox()->CornerMax();
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gp_XYZ HSize = (max - min)/2.;
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gp_XYZ mid = min + HSize;
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gp_XYZ childHsize = HSize/2.;
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// get the whole model size
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double rootSize = 0;
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{
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SMESH_Octree* root = this;
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while ( root->myLevel > 0 )
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root = root->myFather;
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rootSize = root->maxSize();
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}
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Standard_Real XminChild, YminChild, ZminChild;
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gp_XYZ minChild;
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for (int i = 0; i < 8; i++)
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{
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// We build the eight boxes, we need 2 points to do that:
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// Min and Mid
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// In binary, we can write i from 0 to 7
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// For instance :
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// 5 is 101, it corresponds here in coordinates to ZYX
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// If coordinate is 0 in Y-> box from Ymin to Ymid
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// If coordinate is 1 in Y-> box from Ymid to Ymax
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// Same scheme for X and Z
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// I need the minChild to build the Bnd_B3d box.
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gp_XYZ minChild( min.X() + childIndex%2 * HSize.X(),
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min.Y() + (childIndex%4)/2 * HSize.Y(),
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min.Z() + ( childIndex>=4 ) * HSize.Z());
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XminChild = (i%2==0)?min.X():mid.X();
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YminChild = ((i%4)/2==0)?min.Y():mid.Y();
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ZminChild = (i<4)?min.Z():mid.Z();
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minChild.SetCoord(XminChild, YminChild, ZminChild);
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// The child is of the same type than its father (For instance, a SMESH_OctreeNode)
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// We allocate the memory we need for the child
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myChildren[i] = allocateOctreeChild();
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// and we assign to him its box.
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myChildren[i]->myFather = this;
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myChildren[i]->myLimit = myLimit;
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myChildren[i]->myLevel = myLevel + 1;
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myChildren[i]->myBox = new Bnd_B3d(minChild+childHsize,childHsize);
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myChildren[i]->myBox->Enlarge( rootSize * 1e-10 );
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if ( myLimit->myMinBoxSize > 0. && myChildren[i]->maxSize() <= myLimit->myMinBoxSize )
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myChildren[i]->myIsLeaf = true;
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}
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// After building the 8 boxes, we put the data into the children.
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buildChildrenData();
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//After we pass to the next level of the Octree
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for (int i = 0; i<8; i++)
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myChildren[i]->buildChildren();
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}
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//================================================================================
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/*!
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* \brief Tell if Octree is a leaf or not
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* An inheriting class can influence it via myIsLeaf protected field
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*/
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//================================================================================
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bool SMESH_Octree::isLeaf() const
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{
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return myIsLeaf || ((myLimit->myMaxLevel > 0) ? (level() >= myLimit->myMaxLevel) : false );
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return new Bnd_B3d(minChild+childHsize,childHsize);
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}
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//===========================================================================
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@ -175,37 +67,13 @@ bool SMESH_Octree::isLeaf() const
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double SMESH_Octree::maxSize() const
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{
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if ( myBox && !myBox->IsVoid() )
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if ( getBox() && !getBox()->IsVoid() )
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{
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gp_XYZ min = myBox->CornerMin();
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gp_XYZ max = myBox->CornerMax();
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gp_XYZ min = getBox()->CornerMin();
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gp_XYZ max = getBox()->CornerMax();
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gp_XYZ Size = (max - min);
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double returnVal = (Size.X()>Size.Y())?Size.X():Size.Y();
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return (returnVal>Size.Z())?returnVal:Size.Z();
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}
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return 0.;
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}
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//================================================================================
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/*!
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* \brief Return height of the tree, full or from this level to topest leaf
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*/
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//================================================================================
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int SMESH_Octree::getHeight(const bool full) const
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{
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if ( full && myFather )
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return myFather->getHeight( true );
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if ( isLeaf() )
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return 1;
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int heigth = 0;
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for (int i = 0; i<8; i++)
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{
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int h = myChildren[i]->getHeight( false );
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if ( h > heigth )
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heigth = h;
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}
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return heigth + 1;
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}
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@ -20,7 +20,7 @@
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// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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//
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// SMESH SMESH_Octree : global Octree implementation
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// SMESH SMESH_Octree : Octree implementation
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// File : SMESH_Octree.hxx
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// Created : Tue Jan 16 16:00:00 2007
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// Author : Nicolas Geimer & Aurélien Motteux (OCC)
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@ -30,45 +30,25 @@
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#define _SMESH_OCTREE_HXX_
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#include "SMESH_Utils.hxx"
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#include "SMESH_Tree.hxx"
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#include <Bnd_B3d.hxx>
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class SMESHUtils_EXPORT SMESH_Octree {
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//================================================================================
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/*!
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* \brief 3D tree of anything.
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* Methods to implement in a descendant are:
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* - Bnd_B3d* buildRootBox(); // box of the whole tree
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* - descendant* newChild() const; // a new child instance
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* - void buildChildrenData(); // Fill in data of the children
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*/
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class SMESHUtils_EXPORT SMESH_Octree : public SMESH_Tree< Bnd_B3d, 8 >
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{
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public:
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// Data limiting the tree height
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struct Limit {
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// MaxLevel of the Octree
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int myMaxLevel;
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// Minimal size of the Box
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double myMinBoxSize;
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// Default:
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// maxLevel-> 8^8 = 16777216 terminal trees
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// minSize -> box size not checked
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Limit(int maxLevel=8, double minSize=0.):myMaxLevel(maxLevel),myMinBoxSize(minSize) {}
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virtual ~Limit() {} // it can be inherited
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};
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typedef SMESH_Tree< Bnd_B3d, 8> TBaseTree;
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// Constructor. limit must be provided at tree root construction.
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// limit will be deleted by SMESH_Octree
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SMESH_Octree (Limit* limit=0);
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// Destructor
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virtual ~SMESH_Octree ();
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// Compute the Octree. Must be called by constructor of inheriting class
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void compute();
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// Tell if Octree is a leaf or not.
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// An inheriting class can influence it via myIsLeaf protected field
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bool isLeaf() const;
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// Return its level
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int level() const { return myLevel; }
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// Get box to the 3d Bounding Box of the Octree
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const Bnd_B3d& getBox() const { return *myBox; }
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SMESH_Octree (SMESH_TreeLimit* limit=0);
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// Compute the bigger dimension of my box
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double maxSize() const;
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@ -76,49 +56,16 @@ public:
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// Return index of a child the given point is in
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inline int getChildIndex(double x, double y, double z, const gp_XYZ& boxMiddle)const;
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// Return height of the tree, full or from this level to topest leaf
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int getHeight(const bool full=true) const;
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protected:
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protected:
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// Return box of the whole tree
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virtual Bnd_B3d* buildRootBox() = 0;
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// Constructor for children
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virtual SMESH_Octree* allocateOctreeChild() const = 0;
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// Build the data in the 8 children
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virtual void buildChildrenData() = 0;
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// members
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// Array of 8 Octree children
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SMESH_Octree** myChildren;
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// Point the father, set to NULL for the level 0
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SMESH_Octree* myFather;
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// Tell us if the Octree is a leaf or not
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bool myIsLeaf;
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// Tree limit
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const Limit* myLimit;
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private:
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// Build the 8 children boxes recursively
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void buildChildren();
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// Level of the Octree
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int myLevel;
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Bnd_B3d* myBox;
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// Allocate a bndbox according to childIndex. childIndex is zero based
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virtual Bnd_B3d* newChildBox(int childIndex) const;
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};
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//================================================================================
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/*!
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* \brief Return index of a child the given point is in
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*/
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//================================================================================
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inline int SMESH_Octree::getChildIndex(double x, double y, double z, const gp_XYZ& mid) const
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{
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return (x > mid.X()) + ( y > mid.Y())*2 + (z > mid.Z())*4;
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@ -21,7 +21,7 @@
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//
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// SMESH SMESH_OctreeNode : Octree with Nodes set
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// inherites global class SMESH_Octree
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// inherites class SMESH_Octree
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// File : SMESH_OctreeNode.cxx
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// Created : Tue Jan 16 16:00:00 2007
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// Author : Nicolas Geimer & Aurelien Motteux (OCC)
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@ -43,11 +43,11 @@ using namespace std;
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* \param minBoxSize - Minimal size of the Octree Box
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*/
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//================================================================
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SMESH_OctreeNode::SMESH_OctreeNode (const TIDSortedNodeSet & theNodes, const int maxLevel,
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const int maxNbNodes , const double minBoxSize )
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:SMESH_Octree( new SMESH_Octree::Limit( maxLevel,minBoxSize)),
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myMaxNbNodes(maxNbNodes),
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myNodes(theNodes)
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:SMESH_Octree( new Limit( maxLevel,minBoxSize,maxNbNodes)),
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myNodes(theNodes)
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{
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compute();
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}
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@ -58,20 +58,30 @@ SMESH_OctreeNode::SMESH_OctreeNode (const TIDSortedNodeSet & theNodes, const int
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*/
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//================================================================================
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SMESH_OctreeNode::SMESH_OctreeNode (int maxNbNodes):
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SMESH_Octree(), myMaxNbNodes(maxNbNodes)
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SMESH_OctreeNode::SMESH_OctreeNode ():SMESH_Octree()
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{
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}
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//================================================================================
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/*!
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* \brief Return max number of nodes in a tree leaf
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*/
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//================================================================================
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int SMESH_OctreeNode::getMaxNbNodes() const
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{
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return ((Limit*)myLimit)->myMaxNbNodes;
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}
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//==================================================================================
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/*!
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* \brief Construct an empty SMESH_OctreeNode used by SMESH_Octree::buildChildren()
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*/
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//==================================================================================
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SMESH_Octree* SMESH_OctreeNode::allocateOctreeChild() const
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SMESH_Octree* SMESH_OctreeNode::newChild() const
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{
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return new SMESH_OctreeNode(myMaxNbNodes);
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return new SMESH_OctreeNode();
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}
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//======================================
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@ -91,7 +101,7 @@ Bnd_B3d* SMESH_OctreeNode::buildRootBox()
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gp_XYZ p1( n1->X(), n1->Y(), n1->Z() );
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box->Add(p1);
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}
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if ( myNodes.size() <= myMaxNbNodes )
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if ( myNodes.size() <= getMaxNbNodes() )
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myIsLeaf = true;
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return box;
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@ -109,8 +119,8 @@ Bnd_B3d* SMESH_OctreeNode::buildRootBox()
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const bool SMESH_OctreeNode::isInside (const gp_XYZ& p, const double precision)
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{
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if (precision <= 0.)
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return !(getBox().IsOut(p));
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Bnd_B3d BoxWithPrecision = getBox();
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return !(getBox()->IsOut(p));
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Bnd_B3d BoxWithPrecision = *getBox();
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BoxWithPrecision.Enlarge(precision);
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return ! BoxWithPrecision.IsOut(p);
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}
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@ -123,8 +133,8 @@ const bool SMESH_OctreeNode::isInside (const gp_XYZ& p, const double precision)
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//================================================
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void SMESH_OctreeNode::buildChildrenData()
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{
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gp_XYZ min = getBox().CornerMin();
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gp_XYZ max = getBox().CornerMax();
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gp_XYZ min = getBox()->CornerMin();
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gp_XYZ max = getBox()->CornerMax();
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gp_XYZ mid = (min + max)/2.;
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TIDSortedNodeSet::iterator it = myNodes.begin();
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@ -140,7 +150,7 @@ void SMESH_OctreeNode::buildChildrenData()
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for (int i = 0; i < 8; i++)
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{
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SMESH_OctreeNode* myChild = dynamic_cast<SMESH_OctreeNode*> (myChildren[i]);
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if ( myChild->myNodes.size() <= myMaxNbNodes )
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if ( myChild->myNodes.size() <= getMaxNbNodes() )
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myChild->myIsLeaf = true;
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}
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}
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@ -200,7 +210,7 @@ bool SMESH_OctreeNode::NodesAround(const gp_XYZ &node,
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if (!isLeaf())
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{
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// first check a child containing node
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gp_XYZ mid = (getBox().CornerMin() + getBox().CornerMax()) / 2.;
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gp_XYZ mid = (getBox()->CornerMin() + getBox()->CornerMax()) / 2.;
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int nodeChild = getChildIndex( node.X(), node.Y(), node.Z(), mid );
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if ( ((SMESH_OctreeNode*) myChildren[nodeChild])->NodesAround(node, dist2Nodes, precision))
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return true;
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@ -401,7 +411,7 @@ void SMESH_OctreeNode::UpdateByMoveNode( const SMDS_MeshNode* node, const gp_Pnt
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}
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else if ( myChildren )
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{
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gp_XYZ mid = (getBox().CornerMin() + getBox().CornerMax()) / 2.;
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gp_XYZ mid = (getBox()->CornerMin() + getBox()->CornerMax()) / 2.;
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int nodeChild = getChildIndex( node->X(), node->Y(), node->Z(), mid );
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int pointChild = getChildIndex( toPnt.X(), toPnt.Y(), toPnt.Z(), mid );
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if ( nodeChild != pointChild )
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@ -420,7 +430,7 @@ void SMESH_OctreeNode::UpdateByMoveNode( const SMDS_MeshNode* node, const gp_Pnt
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SMESH_OctreeNodeIteratorPtr SMESH_OctreeNode::GetChildrenIterator()
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{
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return SMESH_OctreeNodeIteratorPtr
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( new SMDS_SetIterator< SMESH_OctreeNode*, SMESH_Octree** >
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( new SMDS_SetIterator< SMESH_OctreeNode*, TBaseTree** >
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( myChildren, (( isLeaf() || !myChildren ) ? myChildren : &myChildren[ 8 ] )));
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}
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@ -109,7 +109,16 @@ public:
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protected:
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SMESH_OctreeNode (int maxNbNodes );
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struct Limit : public SMESH_TreeLimit
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{
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int myMaxNbNodes;
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Limit(int maxLevel, double minSize, int maxNbNodes)
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:SMESH_TreeLimit(maxLevel, minSize), myMaxNbNodes(maxNbNodes) {}
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};
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int getMaxNbNodes() const;
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SMESH_OctreeNode();
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// Compute the bounding box of the whole set of nodes myNodes
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virtual Bnd_B3d* buildRootBox();
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@ -118,7 +127,7 @@ protected:
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virtual void buildChildrenData();
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// Construct an empty SMESH_OctreeNode used by SMESH_Octree::buildChildren()
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||||
virtual SMESH_Octree* allocateOctreeChild() const;
|
||||
virtual SMESH_Octree* newChild() const;
|
||||
|
||||
// Return in result a list of nodes closed to Node and remove it from SetOfNodes
|
||||
void FindCoincidentNodes( const SMDS_MeshNode * Node,
|
||||
@ -126,9 +135,6 @@ protected:
|
||||
std::list<const SMDS_MeshNode*>* Result,
|
||||
const double precision);
|
||||
|
||||
// The max number of nodes a leaf box can contain
|
||||
int myMaxNbNodes;
|
||||
|
||||
// The set of nodes inside the box of the Octree (Empty if Octree is not a leaf)
|
||||
TIDSortedNodeSet myNodes;
|
||||
|
||||
|
||||
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Reference in New Issue
Block a user