mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-11-28 03:28:01 +00:00
973b9ea0ce
- added boundBox(const tmp<pointField>&) constructor for use with
coordinate systems
- moved some methods from treeBoundBox to boundBox and use VectorSpace ops
348 lines
9.7 KiB
C++
348 lines
9.7 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Class
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Foam::treeNode
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Description
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Class to implement octree.
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Holds the pointers to sub-octants. These are either other treeNodes or
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treeLeafs. The treeLeafs hold the actual data as a list of indices into
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octreeData.
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Note
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To prevent calculation errors all bounding boxes used in octrees are
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calculated only once.
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The pointers to either treeNode/treeLeaf are implemented 'by hand'
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(explicitly marking type) instead of using a proper virtual mechanism
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to save some space in the treeLeaves.
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SourceFiles
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treeNode.C
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\*---------------------------------------------------------------------------*/
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#ifndef treeNode_H
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#define treeNode_H
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#include "treeBoundBoxList.H"
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#include "treeElem.H"
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#include "linePointRef.H"
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#include "HashSet.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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// class intersection;
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template<class Type> class octree;
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template<class Type> class treeLeaf;
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template<class Type> class treeNode;
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// Forward declaration of friend functions and operators
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template<class Type> Istream& operator>>(Istream&, treeNode<Type>&);
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template<class Type> Ostream& operator<<(Ostream&, const treeNode<Type>&);
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/*---------------------------------------------------------------------------*\
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Class treeNodeName Declaration
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\*---------------------------------------------------------------------------*/
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TemplateName(treeNode);
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/*---------------------------------------------------------------------------*\
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Class treeNode Declaration
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\*---------------------------------------------------------------------------*/
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template <class Type>
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class treeNode
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:
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public treeElem<Type>,
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public treeNodeName
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{
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// Private data
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//- Position of the midpoint
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const point mid_;
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//- Type stored in subNodes_
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unsigned char subNodeTypes_;
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//- Pointers to sub treeNode or treeLeaf
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treeElem<Type>* subNodes_[8];
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//- Constant valid for whole subNode/leaf
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label volType_;
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// Static data members
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//- leaf offset for octant index
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static const label leafOffset;
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// Private Member Functions
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//- mark pointer to subnode as being a treeNode*
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void setAsNode(const label octant);
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//- mark pointer to subnode as being a treeLeaf*
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void setAsLeaf(const label octant);
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//- Set pointer to sub node
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void setNodePtr(const label octant, treeElem<Type>* treeNodePtr);
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//- Set pointer to sub leaf
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void setLeafPtr(const label octant, treeElem<Type>* treeLeafPtr);
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//- Set type of octant
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void setVolType(const label octant, const label type);
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//- Get type of octant
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inline label getVolType(const label octant) const;
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//- Find first leaf on line start-end. Updates start.
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const treeLeaf<Type>* findLeafLineOctant
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(
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const int level,
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const Type& shapes,
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const label octant,
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const vector& direction,
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point& start,
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const point& end
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) const;
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//- Print spaces
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static void space(Ostream&, const label);
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//- Disallow default bitwise copy construct
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treeNode(const treeNode&);
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//- Disallow default bitwise assignment
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void operator=(const treeNode&);
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public:
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// Constructors
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//- Construct from components
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treeNode(const treeBoundBox&);
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//- Construct from Istream
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treeNode(Istream&);
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// Destructor
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~treeNode();
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// Member Functions
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// Access
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//- The midpoint position
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inline const point& midpoint() const;
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//- array of 8 subNodes/leaves
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inline treeElem<Type>* const* subNodes() const;
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//- octant contains pointer to treeNode(1) or treeLeaf(0)
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inline label isNode(const label octant) const;
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//- Get pointer to sub node
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inline treeNode<Type>* getNodePtr(const label octant) const;
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//- Get pointer to sub leaf
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inline treeLeaf<Type>* getLeafPtr(const label octant) const;
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// Edit
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//- Take list of shapes and distribute over the 8 octants
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void distribute
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(
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const label,
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octree<Type>&,
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const Type& shapes,
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const labelList&
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);
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//- Distribute at certain level only
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void redistribute
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(
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const label,
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octree<Type>&,
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const Type& shapes,
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const label
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);
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//- Set type of subnodes
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label setSubNodeType
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const label level,
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octree<Type>& top,
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const Type& shapes
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);
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// Search
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//- Find type of node sample is in. Used for inside/outside
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// determination
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label getSampleType
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const label level,
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const octree<Type>& top,
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const Type& shapes,
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const point& sample
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) const;
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//- Find index of shape containing sample.
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label find
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const Type& shapes,
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const point& sample
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) const;
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//- Find tightest bounding box around sample which is guaranteed
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// to hold at least one cell.
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// Current best bb in tightest,
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// returns true if newTightest has changed, 0 otherwise.
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bool findTightest
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const Type& shapes,
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const point& sample,
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treeBoundBox& tightest
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) const;
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//- Find nearest shape to sample
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// Returns true if found nearer shape and updates
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// tightest, tightestI, tightestDist
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bool findNearest
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const Type& shapes,
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const point& sample,
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treeBoundBox& tightest,
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label& tightestI,
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scalar& tightestDist
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) const;
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//- Find nearest shape to line
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// Returns true if found nearer shape and updates nearest and
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// tightest
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bool findNearest
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const Type& shapes,
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const linePointRef& ln,
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treeBoundBox& tightest,
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label& tightestI, // index of nearest shape
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point& linePoint, // nearest point on line
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point& shapePoint // nearest point on shape
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) const;
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//- Find shapes not outside box. Return true if anything found.
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bool findBox
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const Type& shapes,
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const boundBox& bb,
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labelHashSet& elements
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) const;
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//- Find treeLeaves intersecting line segment [start..end]
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// Updates: start
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const treeLeaf<Type>* findLeafLine
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(
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const label level,
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const Type& shapes,
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point& start,
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const point& end
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) const;
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//- Collect all treeLeafs in leafArray. leafIndex points to first
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// empty slot in leafArray and gets updated.
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void findLeaves
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List<treeLeaf<Type>*>& leafArray,
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label& leafIndex
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) const;
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//- Same but for const.
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void findLeaves
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List<const treeLeaf<Type>*>& leafArray,
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label& leafIndex
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) const;
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// Write
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//- Print contents of node.
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void printNode
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(
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Ostream& os,
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const label level
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) const;
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//- Write subleafs in OBJ format.
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void writeOBJ
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(
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Ostream& os,
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const label level,
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label& vertNo
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) const;
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// IOstream Operators
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friend Istream& operator>> <Type> (Istream&, treeNode<Type>&);
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friend Ostream& operator<< <Type> (Ostream&, const treeNode<Type>&);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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#include "treeNodeI.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#ifdef NoRepository
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# include "treeNode.C"
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#endif
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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