First Version
This commit is contained in:
parent
9163d261f7
commit
f73826de44
|
|
@ -0,0 +1,168 @@
|
||||||
|
/****************************************************************************
|
||||||
|
* VCGLib o o *
|
||||||
|
* Visual and Computer Graphics Library o o *
|
||||||
|
* _ O _ *
|
||||||
|
* Copyright(C) 2005 \/)\/ *
|
||||||
|
* Visual Computing Lab /\/| *
|
||||||
|
* ISTI - Italian National Research Council | *
|
||||||
|
* \ *
|
||||||
|
* All rights reserved. *
|
||||||
|
* *
|
||||||
|
* This program is free software; you can redistribute it and/or modify *
|
||||||
|
* it under the terms of the GNU General Public License as published by *
|
||||||
|
* the Free Software Foundation; either version 2 of the License, or *
|
||||||
|
* (at your option) any later version. *
|
||||||
|
* *
|
||||||
|
* This program is distributed in the hope that it will be useful, *
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
||||||
|
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
|
||||||
|
* for more details. *
|
||||||
|
* *
|
||||||
|
****************************************************************************/
|
||||||
|
/****************************************************************************
|
||||||
|
History
|
||||||
|
|
||||||
|
$Log: not supported by cvs2svn $
|
||||||
|
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
///** Returns the closest posistion of a point p and its distance
|
||||||
|
//@param p a 3d point
|
||||||
|
//@param max_dist maximum distance not to search beyond.
|
||||||
|
//@param dist_funct (templated type) a functor object used to calculate distance from a grid object to the point p.
|
||||||
|
//@param dist the returned closest distance
|
||||||
|
//@param res the returned closest point
|
||||||
|
//@return The closest element
|
||||||
|
//*/
|
||||||
|
///*
|
||||||
|
// A DISTFUNCT object must implement an operator () with signature:
|
||||||
|
// bool operator () (const ObjType& obj, const CoordType & p, ScalarType & min_dist, CoordType & res);
|
||||||
|
//*/
|
||||||
|
#ifndef __VCGLIB_GRID_CLOSEST
|
||||||
|
#define __VCGLIB_GRID_CLOSEST
|
||||||
|
|
||||||
|
|
||||||
|
namespace vcg{
|
||||||
|
|
||||||
|
template <class SPATIAL_INDEX,class DISTFUNCTOR,class TMARKER>
|
||||||
|
typename SPATIAL_INDEX::ObjPtr GetClosest( const typename SPATIAL_INDEX::CoordType & p,
|
||||||
|
const typename SPATIAL_INDEX::ScalarType & max_dist,
|
||||||
|
DISTFUNCTOR & dist_funct,
|
||||||
|
typename SPATIAL_INDEX::ScalarType & dist,
|
||||||
|
typename SPATIAL_INDEX:: CoordType & res,
|
||||||
|
TMARKER tm,
|
||||||
|
SPATIAL_INDEX &Si)
|
||||||
|
{
|
||||||
|
typedef SPATIAL_INDEX::ObjPtr ObjPtr;
|
||||||
|
typedef SPATIAL_INDEX SpatialIndex;
|
||||||
|
typedef SPATIAL_INDEX::CoordType CoordType;
|
||||||
|
typedef SPATIAL_INDEX::ScalarType ScalarType;
|
||||||
|
|
||||||
|
// Initialize min_dist with max_dist to exploit early rejection test.
|
||||||
|
dist = max_dist;
|
||||||
|
|
||||||
|
ScalarType dx = ( (p[0]-Si.bbox.min[0])/Si.voxel[0] );
|
||||||
|
ScalarType dy = ( (p[1]-Si.bbox.min[1])/Si.voxel[1] );
|
||||||
|
ScalarType dz = ( (p[2]-Si.bbox.min[2])/Si.voxel[2] );
|
||||||
|
|
||||||
|
int ix = int( dx );
|
||||||
|
int iy = int( dy );
|
||||||
|
int iz = int( dz );
|
||||||
|
|
||||||
|
if (!Si.bbox.IsIn(p)){
|
||||||
|
assert (0);///the grid has to be extended until the point
|
||||||
|
}
|
||||||
|
double voxel_min=Si.voxel[0];
|
||||||
|
if (voxel_min<Si.voxel[1]) voxel_min=Si.voxel[1];
|
||||||
|
if (voxel_min<Si.voxel[2]) voxel_min=Si.voxel[2];
|
||||||
|
|
||||||
|
ScalarType radius=(dx-ScalarType(ix));
|
||||||
|
if (radius>0.5) radius=(1.0-radius); radius*=Si.voxel[0];
|
||||||
|
|
||||||
|
ScalarType tmp=dy-ScalarType(iy);
|
||||||
|
if (tmp>0.5) tmp=1.0-tmp;
|
||||||
|
tmp*=Si.voxel[1];
|
||||||
|
if (radius>tmp) radius=tmp;
|
||||||
|
tmp=dz-ScalarType(iz);
|
||||||
|
if (tmp>0.5) tmp=1.0-tmp;
|
||||||
|
tmp*=Si.voxel[2];
|
||||||
|
if (radius>tmp) radius=tmp;
|
||||||
|
|
||||||
|
CoordType t_res;
|
||||||
|
//ScalarType min_dist=1e10;
|
||||||
|
ObjPtr winner=NULL;
|
||||||
|
|
||||||
|
tm.UnMarkAll();
|
||||||
|
|
||||||
|
SpatialIndex::CellIterator first,last;
|
||||||
|
SpatialIndex::CellIterator l;
|
||||||
|
|
||||||
|
if ((ix>=0) && (iy>=0) && (iz>=0) &&
|
||||||
|
(ix<Si.siz[0]) && (iy<Si.siz[1]) && (iz<Si.siz[2])) {
|
||||||
|
|
||||||
|
Si.Grid( ix, iy, iz, first, last );
|
||||||
|
for(l=first;l!=last;++l)
|
||||||
|
if (!(**l).IsD())
|
||||||
|
{
|
||||||
|
ObjPtr elem=&(**l);
|
||||||
|
if(!tm.IsMarked(elem))
|
||||||
|
{
|
||||||
|
//if (!l->Elem()->IsD() && l->Elem()->Dist(p,min_dist,t_res)) {
|
||||||
|
//if (!l->Elem()->IsD() && dist_funct(*(l->Elem()), p, min_dist, t_res)) { // <-- NEW: use of distance functor
|
||||||
|
if (dist_funct((**l), p,dist, t_res)) // <-- NEW: use of distance functor
|
||||||
|
{
|
||||||
|
winner=elem;
|
||||||
|
res=t_res;
|
||||||
|
}
|
||||||
|
tm.Mark(elem);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
//return winner;
|
||||||
|
|
||||||
|
Point3i done_min=Point3i(ix,iy,iz), done_max=Point3i(ix,iy,iz);
|
||||||
|
|
||||||
|
//printf(".");
|
||||||
|
|
||||||
|
while (dist>radius) {
|
||||||
|
//if (dy-ScalarType(iy))
|
||||||
|
done_min[0]--; if (done_min[0]<0) done_min[0]=0;
|
||||||
|
done_min[1]--; if (done_min[1]<0) done_min[1]=0;
|
||||||
|
done_min[2]--; if (done_min[2]<0) done_min[2]=0;
|
||||||
|
done_max[0]++; if (done_max[0]>=Si.siz[0]-1) done_max[0]=Si.siz[0]-1;
|
||||||
|
done_max[1]++; if (done_max[1]>=Si.siz[1]-1) done_max[1]=Si.siz[1]-1;
|
||||||
|
done_max[2]++; if (done_max[2]>=Si.siz[2]-1) done_max[2]=Si.siz[2]-1;
|
||||||
|
radius+=voxel_min;
|
||||||
|
//printf("+");
|
||||||
|
for (ix=done_min[0]; ix<=done_max[0]; ix++)
|
||||||
|
for (iy=done_min[1]; iy<=done_max[1]; iy++)
|
||||||
|
for (iz=done_min[2]; iz<=done_max[2]; iz++)
|
||||||
|
{
|
||||||
|
Si.Grid( ix, iy, iz, first, last );
|
||||||
|
for(l=first;l!=last;++l)
|
||||||
|
{
|
||||||
|
if (!(**l).IsD())
|
||||||
|
{
|
||||||
|
ObjPtr elem=&(**l);
|
||||||
|
if( ! tm.IsMarked(elem))
|
||||||
|
{
|
||||||
|
//if (!l->Elem()->IsD() && l->Elem()->Dist(p,min_dist,t_res)) {
|
||||||
|
if (dist_funct((**l), p, dist, t_res))
|
||||||
|
{
|
||||||
|
winner=elem;
|
||||||
|
res=t_res;
|
||||||
|
};
|
||||||
|
tm.Mark(elem);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
};
|
||||||
|
}
|
||||||
|
};
|
||||||
|
return winner;
|
||||||
|
};
|
||||||
|
|
||||||
|
}//end namespace vcg
|
||||||
|
#endif
|
||||||
|
|
||||||
Loading…
Reference in New Issue