From a41dbf5d7f08700d5eaad47fef7a1c3f7d522cca Mon Sep 17 00:00:00 2001 From: Robby Findler Date: Wed, 18 Jan 2012 19:55:56 -0600 Subject: [PATCH] added a clarification to the freeze docs --- collects/teachpack/2htdp/scribblings/image.scrbl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/collects/teachpack/2htdp/scribblings/image.scrbl b/collects/teachpack/2htdp/scribblings/image.scrbl index 00d520eee2..5f4c4f3b22 100644 --- a/collects/teachpack/2htdp/scribblings/image.scrbl +++ b/collects/teachpack/2htdp/scribblings/image.scrbl @@ -1299,7 +1299,7 @@ See also the @racketmodname[2htdp/planetcute] library. hint. When an image both contains many sub-images and is going to be drawn many times (but not scaled or rotated), using freeze on the image can substantially improve performance without changing how - the image draws. + the image draws (assuming it draws only inside its bounding box; see also @secref["nitty-gritty"]). If @racket[freeze] is passed only the image argument, then it crops the image to its bounding box. If it is given three arguments, the two numbers are used as the width and height and