Interpolation-Based Animation - Computer Animation: Algorithms and Techniques - page 128

2 0

4

2

4

4

2

0

2

4

4

2

0

2

4

4 2 0 4

2

4

2

0

2

4

4

2

0

2

4

FIGURE 4.19
Examples of global deformations.

T

(T x U) (P 0 -P)

U

P

T x U T x U

S

P 0

P 0

(T x U) S

Length of projection of
S onto TxU

Length of projection of
(P-P 0 ) onto TxU A B

FIGURE 4.20
Computations forming the local coordinate s using an FFD coordinate system.