grad16() [2/3]

static int16_t grad16 ( uint8_t hash, int16_t x, int16_t y )

inlinestatic

Definition at line 142 of file noise.cpp.

                                                                                                {
    hash = hash & 7;
    int16_t 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 x, and y.