How To Change Image Sizes in Racket

问题

I am making a game using racket and need a background bitmap image. But the image I have selected is too big. How do I change the size? What I have:

(bitmap/url "http://www.example.com/")

回答1:

Import this package:

(require htdp/image)

And use the shrink procedures defined in that package.

EDIT :

As has been pointed out in the comments, 2htdp/image would be a better alternative:

(require 2htdp/image)

Take a look at the scale procedure.

来源：https://stackoverflow.com/questions/10318208/how-to-change-image-sizes-in-racket