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added a wrapper to the robust InterpolationParameters that uses a normal to choose the interpolation orientation

This commit is contained in:
Paolo Cignoni 2010-04-30 09:42:10 +00:00
parent 1111b67e7e
commit 77a846fe90
1 changed files with 20 additions and 0 deletions
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20
vcg/space/triangle3.h
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@ -184,6 +184,26 @@ bool InterpolationParameters(const TriangleType t, const int Axis, const Point3<
if(Axis==2) return InterpolationParameters2( P2(t.P(0)[0],t.P(0)[1]), P2(t.P(1)[0],t.P(1)[1]), P2(t.P(2)[0],t.P(2)[1]), P2(P[0],P[1]), L); if(Axis==2) return InterpolationParameters2( P2(t.P(0)[0],t.P(0)[1]), P2(t.P(1)[0],t.P(1)[1]), P2(t.P(2)[0],t.P(2)[1]), P2(P[0],P[1]), L);
return false; return false;
} }
/// Handy Wrapper of the above one that uses the passed normal N to choose the right orientation
template<class TriangleType, class ScalarType>
bool InterpolationParameters(const TriangleType t, const Point3<ScalarType> & N, const Point3<ScalarType> & P, Point3<ScalarType> & L)
{
if(N[0]>N[1])
{
if(N[0]>N[2])
return InterpolationParameters(t,0,P,L); /* 0 > 1 ? 2 */
else
return InterpolationParameters(t,2,P,L); /* 2 > 1 ? 2 */
}
else
{
if(N[1]>N[2])
return InterpolationParameters(t,1,P,L); /* 1 > 0 ? 2 */
else
return InterpolationParameters(t,2,P,L); /* 2 > 1 ? 2 */
}
}
// Function that computes the barycentric coords of a 2D triangle. Used by the above function. // Function that computes the barycentric coords of a 2D triangle. Used by the above function.