63 lines
3.0 KiB
C
63 lines
3.0 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. *
|
||
|
|
* *
|
||
|
|
****************************************************************************/
|
||
|
|
/****************************************************************************/
|
||
|
|
|
||
|
|
#ifndef __VCG_DISTANCE2
|
||
|
|
#define __VCG_DISTANCE2
|
||
|
|
|
||
|
|
#include <limits>
|
||
|
|
#include <vcg/space/segment2.h>
|
||
|
|
#include <vcg/space/intersection2.h>
|
||
|
|
|
||
|
|
namespace vcg {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Computes the minimum distance between a two segments
|
||
|
|
* @param[in] S0 The input segment0
|
||
|
|
* @param[in] S1 The input segment1
|
||
|
|
* return the distance between the two segments
|
||
|
|
*/
|
||
|
|
template<class ScalarType>
|
||
|
|
ScalarType Segment2DSegment2DDistance(const vcg::Segment2<ScalarType> &S0,
|
||
|
|
const vcg::Segment2<ScalarType> &S1,
|
||
|
|
vcg::Point2<ScalarType> &p_clos)
|
||
|
|
{
|
||
|
|
///first test if they intersect
|
||
|
|
if (vcg:: SegmentSegmentIntersection(S0,S1,p_clos))return 0;
|
||
|
|
vcg::Point2<ScalarType> Pclos0=ClosestPoint(S0,S1.P0());
|
||
|
|
vcg::Point2<ScalarType> Pclos1=ClosestPoint(S0,S1.P1());
|
||
|
|
vcg::Point2<ScalarType> Pclos2=ClosestPoint(S1,S0.P0());
|
||
|
|
vcg::Point2<ScalarType> Pclos3=ClosestPoint(S1,S0.P1());
|
||
|
|
ScalarType d0=(Pclos0-S1.P0()).Norm();
|
||
|
|
ScalarType d1=(Pclos1-S1.P1()).Norm();
|
||
|
|
ScalarType d2=(Pclos2-S0.P0()).Norm();
|
||
|
|
ScalarType d3=(Pclos3-S0.P1()).Norm();
|
||
|
|
///then return the minimuim distance
|
||
|
|
return (std::min(d0,std::min(d1,std::min(d2,d3))));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}///end namespace vcg
|
||
|
|
|
||
|
|
#endif
|