Splines
•The curves used in 2D geometric programs are a special type called splines
–We won’t go into the mathematical definition here…
•Named after flexible pieces of wood bent around metal “ducks” to create smooth contours for ship design
•Characteristics
–Easy to make smooth
–Can pass through pre-selected points
–Are altered via “control points” that change degree of
curvature
http://tom.cs.byu.edu/~455/ch5.pdf