84 lines
3.2 KiB
C++
84 lines
3.2 KiB
C++
/****************************************************************************
|
|
* VCGLib o o *
|
|
* Visual and Computer Graphics Library o o *
|
|
* _ O _ *
|
|
* Copyright(C) 2004 \/)\/ *
|
|
* 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. *
|
|
* *
|
|
****************************************************************************/
|
|
// marco :
|
|
// comments
|
|
// corrected bug
|
|
|
|
|
|
/****************************************************************************
|
|
History
|
|
|
|
****************************************************************************/
|
|
|
|
#ifndef __VCGLIB_VERTEX_DISTANCE
|
|
#define __VCGLIB_VERTEX_DISTANCE
|
|
|
|
#include <vcg/math/base.h>
|
|
#include <vcg/space/point3.h>
|
|
|
|
|
|
namespace vcg {
|
|
namespace vertex{
|
|
|
|
class PointDistanceFunctor {
|
|
public:
|
|
template <class VERTEXTYPE, class SCALARTYPE>
|
|
|
|
/*
|
|
* @param v [IN] is a reference to the current object being tested,
|
|
* @param p [IN] is the query point,
|
|
* @param minDist [IN/OUT] is in input the reject distance and in output the closest distance,
|
|
* @param q [OUT] is the closest point.
|
|
*
|
|
* @remarks The operator returns true if the closest distance is less than input reject distance.
|
|
*
|
|
*/
|
|
inline bool operator () (const VERTEXTYPE & v, const Point3<SCALARTYPE> & p, SCALARTYPE & minDist, Point3<SCALARTYPE> & q)
|
|
{
|
|
// convert the coordinates of p from SCALARTYPE to VERTEXTYPE::ScalarType type
|
|
const Point3<typename VERTEXTYPE::ScalarType> fp = Point3<typename VERTEXTYPE::ScalarType>::Construct(p);
|
|
|
|
typename VERTEXTYPE::ScalarType md; // distance between v and fp
|
|
md = (v.P() - fp).Norm();
|
|
|
|
if (md <= minDist)
|
|
{
|
|
minDist = (SCALARTYPE)(md); // minDist is updated to the closest distance
|
|
q = v.P(); // q is the current closest point
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
};
|
|
|
|
|
|
} // end namespace vertex
|
|
|
|
} // end namespace vcg
|
|
|
|
|
|
#endif
|
|
|