grad16() [2/3]

static fl::i16 grad16 ( fl::u8 hash, fl::i16 x, fl::i16 y )

inlinestatic

Definition at line 148 of file noise.cpp.hpp.

                                                                                                    {
    hash = hash & 7;
    fl::i16 u,v;
    if(hash < 4) { u = x; v = y; } else { u = y; v = x; }
    if(hash&1) { u = -u; }
    if(hash&2) { v = -v; }
 
    return AVG15(u,v);
}

References FL_NO_EXCEPT, x, and y.