<s>
In	O
computer	O
graphics	O
,	O
the	O
winged	B-Algorithm
edge	I-Algorithm
data	B-General_Concept
structure	I-General_Concept
is	O
a	O
way	O
to	O
represent	O
polygon	B-Algorithm
meshes	I-Algorithm
in	O
computer	B-General_Concept
memory	I-General_Concept
.	O
</s>
<s>
It	O
is	O
a	O
type	O
of	O
boundary	B-Algorithm
representation	I-Algorithm
and	O
describes	O
both	O
the	O
geometry	O
and	O
topology	B-Architecture
of	O
a	O
model	O
.	O
</s>
<s>
The	O
winged	B-Algorithm
edge	I-Algorithm
data	B-General_Concept
structure	I-General_Concept
explicitly	O
describes	O
the	O
geometry	O
and	O
topology	B-Architecture
of	O
faces	O
,	O
edges	O
,	O
and	O
vertices	O
when	O
three	O
or	O
more	O
surfaces	O
come	O
together	O
and	O
meet	O
at	O
a	O
common	O
edge	O
.	O
</s>
<s>
The	O
winged	B-Algorithm
edge	I-Algorithm
data	B-General_Concept
structure	I-General_Concept
allows	O
for	O
quick	O
traversal	O
between	O
faces	O
,	O
edges	O
,	O
and	O
vertices	O
due	O
to	O
the	O
explicitly	O
linked	O
structure	O
of	O
the	O
network	O
.	O
</s>
<s>
This	O
rich	O
form	O
of	O
specifying	O
an	O
unstructured	B-Algorithm
grid	I-Algorithm
is	O
in	O
contrast	O
to	O
simpler	O
specifications	O
of	O
polygon	B-Algorithm
meshes	I-Algorithm
such	O
as	O
a	O
node	O
and	O
element	O
list	O
,	O
or	O
the	O
implied	O
connectivity	O
of	O
a	O
regular	O
grid	O
.	O
</s>
<s>
An	O
alternative	O
to	O
the	O
winged	B-Algorithm
edge	I-Algorithm
data	B-General_Concept
structure	I-General_Concept
is	O
the	O
Half-edge	B-Data_Structure
data	I-Data_Structure
structure	I-Data_Structure
.	O
</s>
