<s>
OpenSimplex	B-Application
noise	I-Application
is	O
an	O
n-dimensional	O
(	O
up	O
to	O
4D	O
)	O
gradient	O
noise	O
function	O
that	O
was	O
developed	O
in	O
order	O
to	O
overcome	O
the	O
patent-related	O
issues	O
surrounding	O
simplex	O
noise	O
,	O
while	O
likewise	O
avoiding	O
the	O
visually-significant	O
directional	O
artifacts	O
characteristic	O
of	O
Perlin	O
noise	O
.	O
</s>
<s>
Whereas	O
simplex	O
noise	O
starts	O
with	O
a	O
hypercubic	O
honeycomb	O
and	O
squashes	O
it	O
down	O
the	O
main	O
diagonal	O
in	O
order	O
to	O
form	O
its	O
grid	O
structure	O
,	O
OpenSimplex	B-Application
noise	I-Application
instead	O
swaps	O
the	O
skew	O
and	O
inverse-skew	O
factors	O
and	O
uses	O
a	O
stretched	O
hypercubic	O
honeycomb	O
.	O
</s>
<s>
OpenSimplex	B-Application
noise	I-Application
uses	O
a	O
larger	O
kernel	O
size	O
than	O
simplex	O
noise	O
.	O
</s>
