Sunny:tpoint3.cpp

#include " tpoint3.h "
#include " tpoint4.h "

template < typenameT > t_point3 < T > const t_point3 < T > ::Zero( 0 .f, 0 .f, 0 .f);
template < typenameT > t_point3 < T > const t_point3 < T > ::i( 1 .f, 0 .f, 0 .f);
template < typenameT > t_point3 < T > const t_point3 < T > ::j( 0 .f, 1 .f, 0 .f);
template < typenameT > t_point3 < T > const t_point3 < T > ::k( 0 .f, 0 .f, 1 .f);

template < typenameT > t_point3 < T > ::t_point3( const t_point4 < T >& in )
... {
//Ifthehomogenouscoordinateisn't1,normalizethepoint.
if(in.w!=1.f)
...{
Tinv=1.f/in.w;
x=in.x*inv;
y=in.y*inv;
z=in.z*inv;
}
else
...{
x=in.x;
y=in.y;
z=in.z;
}
}