In the PDF on page 105 in Chapter 9.8 the following code snipped is supposed to generate the stars shown in Fig. 9.12:
val star = Image
.star(100, 50, 5, 0.degrees)
[...]
I fixed it thus using the following order to create something like shown in the Fig. 9.12:
val star = Image
.star(5, 100, 50, 0.degrees)
[...]