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Added (Normalized) Normal version templated on three points (instead forcing the creation of a new triangle)

This commit is contained in:
Paolo Cignoni 2007-01-13 00:25:23 +00:00
parent d60eb7127a
commit 9ba5050193
1 changed files with 16 additions and 0 deletions
vcg/space
triangle3.h

16
vcg/space/triangle3.h
View File

@ -24,6 +24,9 @@
History
$Log: not supported by cvs2svn $
Revision 1.11 2006/10/17 06:51:33 fiorin
In function Barycenter, replaced calls to (the inexistent) cP(i) with P(i)
Revision 1.10 2006/10/10 09:33:47 cignoni
added quality for triangle wrap
@ -270,6 +273,12 @@ Point3<typename TriangleType::ScalarType> Normal(const TriangleType &t)
{
return (( t.P(1) - t.P(0)) ^ (t.P(2) - t.P(0)));
}
template<class Point3Type>
Point3Type Normal( Point3Type const &p0, Point3Type const & p1, Point3Type const & p2)
{
return (( p1 - p0) ^ (p2 - p0));
}
/// Like the above, it returns the normal to the plane passing through p0,p1,p2, but normalized.
template<class TriangleType>
@ -277,6 +286,13 @@ Point3<typename TriangleType::ScalarType> NormalizedNormal(const TriangleType &t
{
return (( t.P(1) - t.P(0)) ^ (t.P(2) - t.P(0))).Normalize();
}
template<class Point3Type>
Point3Type NormalizedNormal( Point3Type const &p0, Point3Type const & p1, Point3Type const & p2)
{
return (( p1 - p0) ^ (p2 - p0)).Normalize();
}
/// Return the Double of area of the triangle
// NOTE the old Area function has been removed to intentionally