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Minor changes in ClosestPoint function

This commit is contained in:
Gianpaolo Palma 2011-03-21 17:02:02 +00:00
parent 61d01309ac
commit e90c417d2b
1 changed files with 9 additions and 19 deletions
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28
vcg/space/segment2.h
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@ -148,26 +148,16 @@ Point2<ScalarType> ClosestPoint( Segment2<ScalarType> s, const Point2<ScalarType
{
vcg::Line2<ScalarType> l;
l.Set(s.P0(),s.P1()-s.P0());
l.Normalize();
Point2<ScalarType> clos=vcg::ClosestPoint<ScalarType,true>(l,p) ;//attention to call
vcg::Box2<ScalarType> b;
b.Add(s.P0());
b.Add(s.P1());
if (b.IsIn(clos))
return clos;
l = l.Normalize();
ScalarType t = l.Projection(p);
Point2<ScalarType> clos = l.P(t);
int lenght = s.Length();
if (t <= 0)
return s.P0();
else if (t >= lenght)
return s.P1();
else
{
ScalarType d0=(s.P0()-p).Norm();
ScalarType d1=(s.P1()-p).Norm();
if (d0<d1)
return (s.P0());
else
return (s.P1());
}
/*ScalarType t = s.Projection(p);
if (s<0) return s.P0();
if (s>1) return s.P0();
return s.P(t);*/
return clos;
}
/*@}*/