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added Intersection_Segment_Box function

This commit is contained in:
Nico Pietroni 2006-01-20 16:35:51 +00:00
parent f8400e07c4
commit 31512102ed
1 changed files with 27 additions and 0 deletions
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27
vcg/space/intersection3.h
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@ -24,6 +24,10 @@
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$Log: not supported by cvs2svn $
Revision 1.20 2005/10/03 16:07:50 ponchio
Changed order of functions intersection_line_box and
intersectuion_ray_box
Revision 1.19 2005/09/30 13:11:39 pietroni
corrected 1 compiling error on Ray_Box_Intersection function
@ -457,6 +461,29 @@ bool Intersection_Ray_Box( const Box3<T> & box, const Ray3<T> & r, Point3<T> & c
return(Intersection_Line_Box<T>(box,l,coord));
}
// segment-box
template<class T>
bool Intersection_Segment_Box( const Box3<T> & box, const Segment3<T> & s, Point3<T> & coord )
{
//as first perform box-box intersection
Box3<T> test;
test.Add(s.P0());
test.Add(s.P1());
if (!test.Collide(box))
return false;
else
{
Line3<T> l;
Point3<T> dir=s.P1()-s.P0();
dir.Normalize();
l.SetOrigin(s.P0());
l.SetDirection(dir);
if(Intersection_Line_Box<T>(box,l,coord))
return (test.IsIn(coord));
return false;
}
}
template<class T>
bool Intersection (const Plane3<T> & plane0, const Plane3<T> & plane1,