Computer Aided Engineering Design

126 COMPUTER AIDED ENGINEERING DESIGN

Figure 4.24 Circular arcs designed with rational Bézier segments for

different positions of P 1 on y = x

0.8

0.6

0.4

0.2

0

• 0.2


• 0.4


• 0.6


• 0.8

y

–1 –0.5 0 0.5 1

x

(a)a = 1

2

1.5

1

0.5

0

y

–0.5 0 0.5 1 1.5 2

x

(b)a = 2

3

2.5

2

1.5

1

0.5

0

y y

1

0.5

0

• 0.5
  –1
  –1.5
  –2
  –2.5
  0123
  x
  (c)a = 3

–3 –2 –1 0 1

x

(d)a = 0.7

1

0.8

0.6

0.4

0.2

0

y

0 0.2 0.4 0.6 0.8 1

x

(e)a = 0.5