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IntersectionSegmentPlane and Intersection_Segment_Box functions Added

This commit is contained in:
Nico Pietroni 2006-03-20 14:42:49 +00:00
parent 0c0e9044cf
commit b2879b7333
1 changed files with 32 additions and 1 deletions
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33
vcg/space/intersection3.h
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@ -24,6 +24,9 @@
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$Log: not supported by cvs2svn $
Revision 1.21 2006/01/20 16:35:51 pietroni
added Intersection_Segment_Box function
Revision 1.20 2005/10/03 16:07:50 ponchio
Changed order of functions intersection_line_box and
intersectuion_ray_box
@ -156,6 +159,17 @@ namespace vcg {
po = li.Origin() + li.Direction()*r;
return true;
}
/// intersection between segment and plane
template<class T>
inline bool IntersectionSegmentPlane( const Plane3<T> & pl, const Segment3<T> & s, Point3<T> & po){
vcg::Line3<T> l;
l.Set(s.P0(),s.P1()-s.P0());
l.Normalize();
if (IntersectionLinePlane(pl,l,po))
return((po-s.P0()).Norm()<=(s.P0()-s.P1()).Norm());
return false;
}
/// intersection between segment and plane
template<typename SEGMENTTYPE>
@ -461,7 +475,7 @@ 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
// segment-box return fist intersection found from p0 to p1
template<class T>
bool Intersection_Segment_Box( const Box3<T> & box, const Segment3<T> & s, Point3<T> & coord )
{
@ -484,6 +498,23 @@ bool Intersection_Segment_Box( const Box3<T> & box, const Segment3<T> & s, Point
}
}
// segment-box intersection , return number of intersections and intersection points
template<class T>
int Intersection_Segment_Box( const Box3<T> & box, const Segment3<T> & s, Point3<T> & coord0, Point3<T> & coord1 )
{
int num=0;
Segment3<T> test= s
if (Intersection_Segment_Box(box,test,coord0 ))
{
num++;
Point3<T> swap=test.P0();
test.P0()=test.P1();
test.P1()=swap;
if (Intersection_Segment_Box(box,test,coord1 ))
num++;
}
return num;
}
template<class T>
bool Intersection (const Plane3<T> & plane0, const Plane3<T> & plane1,