public float CellNoise(float X,float Y,float Jitter){
Float2 P = new Float2(X,Y);
Float2 Pi = floor(P,true);
Float2 Pf = P.Sub(Pi);
Float4 HashX, HashY;
FastHash2D(Pi,out HashX,out HashY);
HashX = (CellularWeightSamples(HashX).Mul(Jitter)).Add(0,1,0,1);
HashY = (CellularWeightSamples(HashY).Mul(Jitter)).Add(0,0,1,1);
Float4 dx = Pf.xxxx.Sub(HashX);
Float4 dy = Pf.yyyy.Sub(HashY);
Float4 d = dx.Square()+dy.Square();
d.xy = min(d.xy,d.zw,false);
return min(d.x,d.y,false).Mul(1.0f/1.125f);
}
public Float2 frac(Float2 s,bool SpawnNew){
if (SpawnNew)
return s-floor(s,true);
else
return s.Sub(floor(s,true));
}
