| public static BiCubicKernel ( double x ) : double | ||
| x | double | X value. |
| return | double | |
public static double BiCubicKernel( double x )
{
if ( x < 0 )
{
x = -x;
}
double biCoef = 0;
if ( x <= 1 )
{
biCoef = ( 1.5 * x - 2.5 ) * x * x + 1;
}
else if ( x < 2 )
{
biCoef = ( ( -0.5 * x + 2.5 ) * x - 4 ) * x + 2;
}
return biCoef;
}
}