<s>
In	O
mathematics	O
,	O
physics	O
,	O
and	O
theoretical	O
computer	O
graphics	O
,	O
tapering	B-Algorithm
is	O
a	O
kind	O
of	O
shape	O
deformation	O
.	O
</s>
<s>
Just	O
as	O
an	O
affine	B-Algorithm
transformation	I-Algorithm
,	O
such	O
as	O
scaling	B-Algorithm
or	O
shearing	B-Algorithm
,	O
is	O
a	O
first-order	O
model	O
of	O
shape	O
deformation	O
,	O
tapering	B-Algorithm
is	O
a	O
higher	O
order	O
deformation	O
just	O
as	O
twisting	O
and	O
bending	O
.	O
</s>
<s>
Tapering	B-Algorithm
can	O
be	O
thought	O
of	O
as	O
non-constant	O
scaling	B-Algorithm
by	O
a	O
given	O
tapering	B-Algorithm
function	O
.	O
</s>
<s>
To	O
create	O
a	O
nonlinear	O
taper	O
,	O
instead	O
of	O
scaling	B-Algorithm
in	O
x	O
and	O
y	O
for	O
all	O
z	O
with	O
constants	O
as	O
in	O
:	O
</s>
