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Removed dependence from matrix44 and changed VectProd

This commit is contained in:
Federico Ponchio 2005-01-21 18:02:11 +00:00
parent 88037f7df5
commit 8da5fad884
1 changed files with 14 additions and 9 deletions
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23
vcg/space/point4.h
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@ -24,6 +24,9 @@
History
$Log: not supported by cvs2svn $
Revision 1.8 2005/01/12 11:25:02 ganovelli
added Dimension
Revision 1.7 2004/10/11 17:46:11 ganovelli
added definition of vector product (not implemented)
@ -190,18 +193,20 @@ public:
{
return Point4( -_v[0], -_v[1], -_v[2], -_v[3] );
}
inline Point4 VectProd ( const Point4 x, const Point4 z ) const
inline Point4 VectProd ( const Point4 &x, const Point4 &z ) const
{
Point4 res;
Matrix44<T> b;
*(vcg::Point4<T>*)&b[1][0] = *this;
*(vcg::Point4<T>*)&b[2][0] = x;
*(vcg::Point4<T>*)&b[3][0] = z;
const Point4 &y = *this;
res[0] = b[1][1]*b[2][2]*b[3][3]-b[1][1]*b[2][3]*b[3][2]-b[2][1]*b[1][2]*b[3][3]+ b[2][1]*b[1][3]*b[3][2]+b[3][1]*b[1][2]*b[2][3]-b[3][1]*b[1][3]*b[2][2]; res[1] = b[1][0]*b[2][3]*b[3][2]-b[3][0]*b[1][2]*b[2][3]-b[1][0]*b[2][2]*
b[3][3]+b[3][0]*b[1][3]*b[2][2]+b[2][0]*b[1][2]*b[3][3]-b[2][0]*b[1][3]*b[3][2]; res[2] = -b[1][0]*b[3][1]*b[2][3]+b[2][0]*b[3][1]*b[1][3]+b[1][0]*b[2][1]*
b[3][3]-b[2][0]*b[1][1]*b[3][3]-b[3][0]*b[2][1]*b[1][3]+b[3][0]*b[1][1]*b[2][3]; res[3] = -b[3][0]*b[1][1]*b[2][2]-b[1][0]*b[2][1]*b[3][2]+b[2][0]*b[1][1]*
b[3][2]+b[1][0]*b[3][1]*b[2][2]-b[2][0]*b[3][1]*b[1][2]+b[3][0]*b[2][1]*b[1][2]; return res;
res[0] = y[1]*x[2]*z[3]-y[1]*x[3]*z[2]-x[1]*y[2]*z[3]+
x[1]*y[3]*z[2]+z[1]*y[2]*x[3]-z[1]*y[3]*x[2];
res[1] = y[0]*x[3]*z[2]-z[0]*y[2]*x[3]-y[0]*x[2]*
z[3]+z[0]*y[3]*x[2]+x[0]*y[2]*z[3]-x[0]*y[3]*z[2];
res[2] = -y[0]*z[1]*x[3]+x[0]*z[1]*y[3]+y[0]*x[1]*
z[3]-x[0]*y[1]*z[3]-z[0]*x[1]*y[3]+z[0]*y[1]*x[3];
res[3] = -z[0]*y[1]*x[2]-y[0]*x[1]*z[2]+x[0]*y[1]*
z[2]+y[0]*z[1]*x[2]-x[0]*z[1]*y[2]+z[0]*x[1]*y[2];
return res;
}
//@}