vcglib/vcg/simplex/vertex/distance.h

84 lines
3.2 KiB
C
Raw Normal View History

2005-10-03 16:13:13 +02:00
/****************************************************************************
* 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
2005-10-03 16:13:13 +02:00
/****************************************************************************
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
2005-10-03 16:13:13 +02:00
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;
2005-10-03 16:13:13 +02:00
}
};
2005-10-05 19:39:14 +02:00
} // end namespace vertex
2005-10-03 16:13:13 +02:00
} // end namespace vcg
#endif