01/21/2003
15-462 Computer Graphics I
7
Vertex Arrays
•Draw
cube with 6*4=24 or with 8 vertices?
•Expense
in drawing and transformation
•Strips
help to some extent
•Vertex
arrays provide general solution
•Advanced
(new in OpenGL 1.2)
–Define
(transmit) array of vertices, colors, normals
–Draw
using index into array(s)
–Vertex
sharing for efficient operations
•Not
needed for first assignment