308 lines
11 KiB
C
308 lines
11 KiB
C
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/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2005 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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Revision 1.16 2006/10/02 09:34:03 cignoni
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Re-added diff 1.12 by Pietroni (cancelled by previous rollback):
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in GridDoRay function the RayIterator must be initialized with maximum distance
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Revision 1.15 2006/10/02 09:28:45 cignoni
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Reverted to version 1.10 to nullify dangerous marfr960's changes
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Revision 1.10 2006/05/17 12:48:52 pietroni
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corrected bug in GridGetInBox function
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Revision 1.9 2006/01/27 09:58:47 corsini
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fix signed/unsigned mismatch
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Revision 1.8 2005/12/06 18:00:39 pietroni
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added deleted objects control for GridClosest() function call
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Revision 1.7 2005/12/02 00:30:27 cignoni
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Corrected typename usage and removed excess ';' from end of template functions, for gcc compiling
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Revision 1.6 2005/10/03 13:57:32 pietroni
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added GridGetInSphere and GridGetInBox functions
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Revision 1.5 2005/10/02 23:18:06 cignoni
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Small bug in the computation of the intersection between the todo box and the grid bbox that failed for extrema points.
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Revision 1.4 2005/09/30 15:12:16 cignoni
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Completely rewrote the GridClosest, now it:
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- works for point out of the grid
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- expands the box in a distance coherent way
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- does not re-visit already visited cells
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- shorter code!!
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( still to be tested :) )
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Revision 1.3 2005/09/30 13:15:48 pietroni
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added functions:
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- GetKClosest
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- DoRay
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Revision 1.2 2005/09/28 08:27:11 cignoni
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Added a control to avoid multiple check of the same cells during radial expansion
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Still miss some code to properly initialize when point is out of the BBox of the grid.
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Revision 1.1 2005/09/27 15:09:38 cignoni
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First Version
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****************************************************************************/
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///** Returns the closest posistion of a point _p and its distance
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//@param _p a 3d point
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//@param _maxDist maximum distance not to search beyond.
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//@param _getPointDistance (templated type) a functor object used to calculate distance from a grid object to the point _p.
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//@param _minDist the returned closest distance
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//@param _closestPt the returned closest point
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//@return The closest element
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//*/
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///*
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// A DISTFUNCT object must implement an operator () with signature:
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// bool operator () (const ObjType& obj, const CoordType & _p, ScalarType & min_dist, CoordType & _closestPt);
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//*/
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#ifndef __VCGLIB_GRID_CLOSEST
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#define __VCGLIB_GRID_CLOSEST
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#include <vcg/space/index/space_iterators.h>
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namespace vcg{
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//template <class SPATIAL_INDEX, class OBJPOINTDISTFUNCTOR, class OBJMARKER>
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// typename SPATIAL_INDEX::ObjPtr GridClosest(SPATIAL_INDEX &Si,
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// OBJPOINTDISTFUNCTOR _getPointDistance,
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// OBJMARKER & _marker,
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// const typename OBJPOINTDISTFUNCTOR::QueryType & _p_obj,
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// const typename SPATIAL_INDEX::ScalarType & _maxDist,
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// typename SPATIAL_INDEX::ScalarType & _minDist,
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// typename SPATIAL_INDEX:: CoordType &_closestPt)
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//{
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// typedef typename SPATIAL_INDEX::ObjPtr ObjPtr;
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// typedef SPATIAL_INDEX SpatialIndex;
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// typedef typename SPATIAL_INDEX::CoordType CoordType;
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// typedef typename SPATIAL_INDEX::ScalarType ScalarType;
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// typedef typename SPATIAL_INDEX::Box3x Box3x;
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//
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// Point3<ScalarType> _p = OBJPOINTDISTFUNCTOR::Pos(_p_obj);
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// // Initialize min_dist with _maxDist to exploit early rejection test.
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// _minDist = _maxDist;
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// ObjPtr winner=NULL;
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// _marker.UnMarkAll();
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// ScalarType newradius = Si.voxel.Norm();
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// ScalarType radius;
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// Box3i iboxdone,iboxtodo;
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// CoordType t_res;
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// typename SPATIAL_INDEX::CellIterator first,last,l;
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// if(Si.bbox.IsInEx(_p))
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// {
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// Point3i _ip;
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// Si.PToIP(_p,_ip);
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// Si.Grid( _ip[0],_ip[1],_ip[2], first, last );
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// for(l=first;l!=last;++l)
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// {
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// ObjPtr elem=&(**l);
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// if (!elem->IsD())
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// {
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// if (_getPointDistance((**l), _p_obj,_minDist, t_res)) // <-- NEW: use of distance functor
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// {
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// winner=elem;
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// _closestPt=t_res;
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// newradius=_minDist; //
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// }
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// _marker.Mark(elem);
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// }
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// }
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// iboxdone=Box3i(_ip,_ip);
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// }
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// int ix,iy,iz;
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// Box3i ibox(Point3i(0,0,0),Si.siz-Point3i(1,1,1));
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// do
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// {
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// radius=newradius;
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// Box3x boxtodo=Box3x(_p,radius);
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// //boxtodo.Intersect(Si.bbox);
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// Si.BoxToIBox(boxtodo, iboxtodo);
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// iboxtodo.Intersect(ibox);
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// if(!boxtodo.IsNull())
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// {
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// for (ix=iboxtodo.min[0]; ix<=iboxtodo.max[0]; ix++)
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// for (iy=iboxtodo.min[1]; iy<=iboxtodo.max[1]; iy++)
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// for (iz=iboxtodo.min[2]; iz<=iboxtodo.max[2]; iz++)
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// if(ix<iboxdone.min[0] || ix>iboxdone.max[0] || // this test is to avoid to re-process already analyzed cells.
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// iy<iboxdone.min[1] || iy>iboxdone.max[1] ||
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// iz<iboxdone.min[2] || iz>iboxdone.max[2] )
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// {
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// Si.Grid( ix, iy, iz, first, last );
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// for(l=first;l!=last;++l) if (!(**l).IsD())
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// {
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// ObjPtr elem=&(**l);
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// if (!elem->IsD())
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// {
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// if( ! _marker.IsMarked(elem))
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// {
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// if (_getPointDistance((**l), _p_obj, _minDist, t_res))
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// {
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// winner=elem;
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// _closestPt=t_res;
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// };
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// _marker.Mark(elem);
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// }
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// }
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// }
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// }
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// }
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// if(!winner) newradius=radius+Si.voxel.Norm();
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// else newradius = _minDist;
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// }
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// while (_minDist>radius);
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// return winner;
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//}
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//template <class SPATIALINDEXING,class OBJPOINTDISTFUNCTOR, class OBJMARKER,
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//class OBJPTRCONTAINER, class DISTCONTAINER, class POINTCONTAINER>
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// unsigned int GridGetKClosest(SPATIALINDEXING &_Si,
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// OBJPOINTDISTFUNCTOR & _getPointDistance,
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// OBJMARKER & _marker,
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// const unsigned int _k,
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// const typename SPATIALINDEXING::CoordType & _p,
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// const typename SPATIALINDEXING::ScalarType & _maxDist,
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// OBJPTRCONTAINER & _objectPtrs,
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// DISTCONTAINER & _distances,
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// POINTCONTAINER & _points)
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//{
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// typedef vcg::ClosestIterator<SPATIALINDEXING,OBJPOINTDISTFUNCTOR,OBJMARKER> ClosestIteratorType;
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// ClosestIteratorType Cli=ClosestIteratorType(_Si,_getPointDistance);
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// Cli.SetMarker(_marker);
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// Cli.Init(_p,_maxDist);
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// unsigned int i=0;
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// _objectPtrs.clear();
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// _distances.clear();
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// _points.clear();
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// while ((!Cli.End())&&(i<_k))
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// {
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// _objectPtrs.push_back(&(*Cli));
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// _distances.push_back(Cli.Dist());
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// _points.push_back(Cli.NearestPoint());
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// ++Cli;
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// i++;
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// }
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// return (i);
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//}
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//template <class SPATIALINDEXING,class OBJRAYISECTFUNCTOR, class OBJMARKER>
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// typename SPATIALINDEXING::ObjPtr GridDoRay(SPATIALINDEXING &_Si,
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// OBJRAYISECTFUNCTOR &_rayIntersector,
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// OBJMARKER &_marker,
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// const Ray3<typename SPATIALINDEXING::ScalarType> & _ray,
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// const typename SPATIALINDEXING::ScalarType & _maxDist,
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// typename SPATIALINDEXING::ScalarType & _t)
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//{
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// typedef vcg::RayIterator<SPATIALINDEXING,OBJRAYISECTFUNCTOR,OBJMARKER> RayIteratorType;
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// RayIteratorType RayIte=RayIteratorType(_Si,_rayIntersector,_maxDist);
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// RayIte.SetMarker(_marker);
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// RayIte.Init(_ray);
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// if (!RayIte.End())
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// {
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// _t=RayIte.Dist();
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// return(&(*RayIte));
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// }
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// return 0;
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//}
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//
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//template <class SPATIALINDEXING, class OBJPOINTDISTFUNCTOR, class OBJMARKER, class OBJPTRCONTAINER, class DISTCONTAINER, class POINTCONTAINER>
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// unsigned int GridGetInSphere(SPATIALINDEXING &_Si,
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// OBJPOINTDISTFUNCTOR & _getPointDistance,
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// OBJMARKER & _marker,
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// const typename SPATIALINDEXING::CoordType & _p,
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// const typename SPATIALINDEXING::ScalarType & _r,
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// OBJPTRCONTAINER & _objectPtrs,
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// DISTCONTAINER & _distances,
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// POINTCONTAINER & _points)
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//{
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// typedef vcg::ClosestIterator<SPATIALINDEXING,OBJPOINTDISTFUNCTOR,OBJMARKER> ClosestIteratorType;
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// ClosestIteratorType Cli=ClosestIteratorType(_Si,_getPointDistance);
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// Cli.SetMarker(_marker);
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// Cli.Init(_p,_r);
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// _objectPtrs.clear();
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// _distances.clear();
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// _points.clear();
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// while (!Cli.End())
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// {
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// _objectPtrs.push_back(&(*Cli));
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// _distances.push_back(Cli.Dist());
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// _points.push_back(Cli.NearestPoint());
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// ++Cli;
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// }
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// return ((int)_objectPtrs.size());
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// }
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template <class SPATIALINDEXING,class OBJMARKER, class OBJPTRCONTAINER>
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unsigned int GridGetInBox2D(SPATIALINDEXING &_Si,
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OBJMARKER & _marker,
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const vcg::Box2<typename SPATIALINDEXING::ScalarType> &_bbox,
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OBJPTRCONTAINER & _objectPtrs)
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{
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typename SPATIALINDEXING::CellIterator first,last,l;
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_objectPtrs.clear();
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vcg::Box2i ibbox;
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Box2i Si_ibox(Point2i(0,0),_Si.siz-Point2i(1,1));
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_Si.BoxToIBox(_bbox, ibbox);
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ibbox.Intersect(Si_ibox);
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_marker.UnMarkAll();
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if (ibbox.IsNull())
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return 0;
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else
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{
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int ix,iy,iz;
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for (ix=ibbox.min[0]; ix<=ibbox.max[0]; ix++)
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for (iy=ibbox.min[1]; iy<=ibbox.max[1]; iy++)
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{
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_Si.Grid( ix, iy, first, last );
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for(l=first;l!=last;++l)
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if (!(**l).IsD())
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{
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typename SPATIALINDEXING::ObjPtr elem=&(**l);
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vcg::Box2<typename SPATIALINDEXING::ScalarType> box_elem;
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elem->GetBBox(box_elem);
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if(( ! _marker.IsMarked(elem))&&(box_elem.Collide(_bbox))){
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_objectPtrs.push_back(elem);
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_marker.Mark(elem);
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}
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}
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}
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return (static_cast<unsigned int>(_objectPtrs.size()));
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}
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}
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}//end namespace vcg
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#endif
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