Computer Aided Engineering Design

58 COMPUTER AIDED ENGINEERING DESIGN

Draw

(a) An isometric projection of the block.
(b) A dimetric projection of the block for shz = 0.5 (ψ = ± 20.7, φ = ± 22.21 for shx = shy).
(c) A trimetric projection with φ = 30°,ψ = 45° (rotations about y- and x- axes, respectively) and
projection on the z = 0 plane.
(d) Orthographic projections on the three coordinate planes.

Figure 2.26 Isometric projections for various views (rotation angles) of the block

y

z

x

O

–4 –3 –2 –1 0 1 2 3 4 5

3

2

1

0

–1

–2

–3

–4

(a)φ = –45°,ψ = 35.26°

0 123456

5 4 3 2 1 0

–1

–2

(b)φ = 45°,ψ = 35.26°

–4 –3 –2 –1 0 1 2 3 4 5

6 5 4 3 2 1 0

(d)φ = –45°,ψ = –35.26°

012345 6

4

3

2

1

0

–1

–2

–3

(c)φ = 45°,ψ = –35.26°