02/11/2003
15-462 Graphics I
2
Goals
•How do
we draw surfaces?
–Approximate
with polygons
–Draw
polygons
•How do
we specify a surface?
–Explicit,
implicit, parametric
•How do
we approximate a surface?
–Interpolation
(use only points)
–Hermite
(use points and tangents)
–Bezier
(use points, and more points for tangents)
•Next
lecture: splines, realization in OpenGL