Graphics Reference
In-Depth Information
v
4
v
4
v
2
e
4
e
4
v
2
e
8
e
8
v
6
v
6
e
7
e
3
e
3
e
5
PP
4
P
2
p
2
e
1
e
1
p
3
e
9
e
7
P
3
p
1
P
1
v
3
e
6
v
5
v
1
e
2
v
3
e
6
v
5
v
1
e
2
(
(
vertex vertex coordinates
polygon
coordinates of polygon vertices
vertex vertex coordinates
p
1
v
1
x
1
y
1
z
1
p
2
x
1
y
1
z
1
x
3
y
3
z
3
x
2
y
2
z
2
v
2
x
2
y
2
z
2
v
1
v
3
V
2
p
2
x
2
y
2
z
2
x
3
y
3
z
3
x
4
y
4
z
4
v
3
x
3
y
3
z
3
p
2
v
2
v
3
V
4
p
2
x
2
y
2
z
2
x
3
y
3
z
3
x
4
y
4
z
4
v
4
x
4
y
4
z
4
p
1
v
3
v
3
V
2
p
2
x
2
y
2
z
2
x
3
y
3
z
3
x
4
y
4
z
4
v
5
x
5
y
5
z
5
p
1
v
1
v
3
V
2
v
6
x
6
y
6
z
6
Polygon mesh representation of surface patch (a)
Vertex-polygonmesh representation of surface patch (a)
vertex table
vertex vertex coordinates incident edges incident polygons adjacent vertices
v
1
polygon table
polygon incident vertices incident edge adjacent polygons
p
1
x
1
y
1
z
1
e
2
e
2
e
1
p
1
v
3
v
2
v
2
x
2
y
2
z
2
e
1
e
3
e
4
p
1
p
2
v
1
v
3
v
4
v
1
v
3
v
2
e
2
e
3
e
1
p
2
v
3
x
3
y
3
z
3
e
6
e
5
e
3
e
2
p
3
p
2
p
1
v
5
v
4
v
2
v
1
p
2
v
2
v
3
v
4
e
3
e
5
e
4
p
1
p
3
v
4
x
4
y
4
z
4
e
4
e
3
e
3
e
7
e
8
p
2
p
3
p
4
v
2
v
3
v
5
v
6
p
3
v
3
v
5
v
4
e
6
e
7
e
5
p
4
p
2
v
5
x
5
y
5
z
5
e
9
e
7
e
3
e
6
p
4
p
3
v
6
v
4
v
3
p
4
v
4
v
5
v
6
e
7
e
9
e
8
p
3
v
6
x
6
y
6
z
6
e
8
e
9
p
4
v
4
v
5
edge table
edge incident vertices adjacent edges incident polygons
e
1
v
1
v
2
e
2
e
3
e
4
p
1
e
2
v
2
v
3
e
6
e
5
e
3
e
1
p
1
e
3
v
3
v
2
e
6
e
5
e
4
e
1
e
2
p
2
p
1
e
4
v
2
v
4
e
1
e
3
e
5
e
7
e
8
p
2
e
5
v
3
v
4
e
3
e
2
e
6
e
7
e
8
e
4
p
3
p
2
e
6
v
3
v
5
e
5
e
3
e
2
e
9
e
7
p
3
e
7
v
5
v
4
e
6
e
9
e
7
e
8
e
4
e
5
p
4
p
3
e
8
v
4
v
6
e
4
e
5
e
7
p
4
e
9
v
5
v
6
e
7
e
6
e
8
p
4
Simple adjacency mesh representation of surface patch (a)
edge table
vertex table
e
1
v
1
v
2
p
1
e
2
e
2
e
4
e
3
polygon table
v
1
x
1
y
1
z
1
e
1
e
2
v
1
v
3
p
1
e
1
e
1
e
3
e
6
v
2
x
2
y
2
z
2
e
3
e
3
v
2
v
3
p
2
p
1
e
4
e
1
e
5
e
2
p
1
e
1
v
3
x
3
y
3
z
3
e
2
e
4
v
2
v
4
p
2
e
1
e
1
e
8
e
5
p
2
e
3
v
4
x
4
y
4
z
4
e
4
e
5
v
3
v
4
4
p
2
p
3
e
3
e
6
e
4
e
8
p
3
e
5
v
5
x
5
y
5
z
5
e
6
e
6
v
3
v
5
p
3
e
5
e
2
e
7
e
7
v
6
x
6
y
6
z
6
e
8
e
7
v
5
v
6
p
3
e
6
e
6
e
8
e
8
e
8
v
4
v
6
p
3
e
4
e
5
e
7
e
7
Winge-edge surface representation of surface patch (b)
Figure 2.3
Different mesh representations of two surface patches
