ClosestK added and other minor changes
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ganovelli
parent
c272706c18
commit
2d6e353608
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@ -24,6 +24,10 @@
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History
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$Log: not supported by cvs2svn $
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Revision 1.3 2005/03/11 15:25:29 ganovelli
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added ClosersIterator and other minor changes. Not compatible with the previous version.
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Still other modifications to do (temporary commit)
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Revision 1.2 2005/02/21 12:13:25 ganovelli
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added vcg header
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@ -40,7 +44,7 @@ added vcg header
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#include <map>
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#include <vector>
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#include <algorithm>
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#ifdef WIN32
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#include <hash_map>
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#define STDEXT stdext
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@ -60,7 +64,6 @@ class SpatialHashTable{
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public:
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typedef ElemType* SimplexPointer;
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typedef typename ElemType::CoordType CoordType;
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typedef typename CoordType::ScalarType ScalarType;
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@ -100,7 +103,7 @@ public:
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int Size()
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{
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return (elem.size());
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return (int)(elem.size());
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}
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///update or insert an element into a cell
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@ -117,18 +120,16 @@ public:
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}
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//return an array of all simplexes of the map that have a right timestamp or are not deleted
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std::vector<ElemType*> Simplexes(const int & _tempMark)
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void Elems(const int & _tempMark,std::vector<ElemType*> & res)
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{
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std::vector<ElemType*> result;
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result.clear();
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for (IteMap ite=elem.begin();ite!=elem.end();ite++)
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{
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ElemType* sim=(*ite).first;
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int t=(*ite).second;
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if ((!sim->IsD())&&(t>=_tempMark))
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result.push_back(sim);
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res.push_back(sim);
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}
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return (result);
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}
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}; // end struct HElement
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@ -302,7 +303,84 @@ public:
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return ret;
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}
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// tanto per prova
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//*********************************************************************
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template <class A>
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bool usefirst(const A & a,const A & b)const {return a.first < b.first;}
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int ClosestK(const int& k,
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ElemType* e,
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std::vector<ElemType*>& res) {
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typedef std::pair<ScalarType,ElemType*> ElemDist;
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std::vector<ElemDist > neigh_dist;
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std::vector<ElemDist >::iterator ite_nd;
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std::vector<ElemType* > neigh;
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std::vector<ElemType*>::iterator i_neigh;
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typename ElemType::CoordType p = e->P();
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ScalarType radius,tmp,d;
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// set the radius as the distance to the closest face
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radius = p[2]-floor(p[2]/l)*l;
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if(radius > l*0.5) radius = l -radius;
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tmp = p[1]-floor(p[1]/l)*l;
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if(tmp > l*0.5) tmp = l -tmp;
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if(radius > tmp) tmp = radius;
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tmp = p[0]-floor(p[0]/l)*l;
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if(tmp > l*0.5) tmp = l -tmp;
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if(radius > tmp) radius = tmp;
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int x,y,z;
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vcg::Point3i mincorner,maxcorner,c;
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c = Cell(p);
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mincorner = maxcorner = c;
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neigh_dist.push_back(ElemDist(-1,e));
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ite_nd = neigh_dist.begin();
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while((int)res.size() < k)
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{
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//run on the border
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for( z = mincorner[2]; z <= maxcorner[2]; ++z)
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for( y = mincorner[1]; y <= maxcorner[1]; ++y)
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for( x = mincorner[0]; x <= maxcorner[0];)
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{
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neigh.clear();
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getAtCell(vcg::Point3i(x,y,z),neigh);
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for(i_neigh = neigh.begin(); i_neigh != neigh.end(); ++i_neigh)
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{
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d = Distance(p,(*i_neigh)->P());
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if( (*i_neigh) != e)
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neigh_dist.push_back(ElemDist(d,*i_neigh));
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}
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if(
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( ( y == mincorner[1]) || ( y == maxcorner[1])) ||
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( ( z == mincorner[2]) || ( z == maxcorner[2])) ||
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( x == maxcorner[0])
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)++x; else x=maxcorner[0];
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}
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// ,usefirst<ElemDist> ---<std::vector<ElemDist >::iterator >
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ite_nd =neigh_dist.begin();
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std::advance(ite_nd,res.size());
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std::sort(ite_nd,neigh_dist.end());
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while ( ( (int)res.size() < k ) && (ite_nd != neigh_dist.end()))
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{
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if((*ite_nd).first < radius)
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res.push_back( (*ite_nd).second );
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++ite_nd;
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}
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mincorner -= vcg::Point3i(1,1,1);
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maxcorner += vcg::Point3i(1,1,1);
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radius+=l;
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}
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return 0;
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}
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//**********************************************************************
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// return the elem closer than radius
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int CloserThan( typename ElemType::CoordType p,
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typename ElemType::ScalarType radius,
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std::vector<ElemType*> & closers){
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@ -314,8 +392,8 @@ public:
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closers.push_back(*cli);
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++cli;
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}
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return closers.size();
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}
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return (int)closers.size();
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}
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std::vector<Point3i> Cells(ElemType *s)
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{
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@ -359,25 +437,20 @@ public:
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hash_table.clear();
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}
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std::vector<SimplexPointer> getAt(CoordType _p)
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{
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std::vector<SimplexPointer> result;
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Point3i c=Cell(_p);
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return (getAtCell(c));
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}
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//void std::vector<ElemType> getAt(CoordType _p,std::vector<ElemType> & res)
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//{
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// std::vector<ElemType> result;
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// Point3i c=Cell(_p);
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// return (getAtCell(c,res));
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//}
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std::vector<SimplexPointer> getAtCell(Point3i _c)
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void getAtCell(Point3i _c,std::vector<ElemType*> & res)
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{
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std::vector<SimplexPointer> result;
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std::vector<ElemType> result;
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int h=Hash(_c);
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if (numElemCell(_c)==0)
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{
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return result;
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}
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else
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{
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IteHtable res=hash_table.find(h);
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return ((*res).second.Simplexes(tempMark));
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if (numElemCell(_c)!=0){
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IteHtable h_res=hash_table.find(h);
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((*h_res).second.Elems(tempMark,res));
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}
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}
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