Matthew Flatt
68e005fb2c
racket/draw: make-immutable-{color,brush,pen} => make-{color,brush,pen}
...
Also, use keywords for `make-pen' and `make-brush'.
Adding `make-pen' and `make-color' creates many conflicts among
teaching libraries, such as `2htdp/image'. These are easy to fix
up in the tree, but adding such obvious names to `racket/draw'
may create other compatibility problems, so we might have to reconsider
the names.
In consultation with Asumu.
2012-05-01 21:04:40 -06:00
Robby Findler
ed22a630fd
fix predicates to return booleans
2012-02-07 20:33:05 -06:00
Stephen Bloch
83fd1e968d
Corrected an error message that said it wanted a real, but actually
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expected an integer.
2011-07-14 13:01:11 -04:00
Matthew Flatt
8271f7b182
export `step-count?'
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Merge to 5.1.2
2011-07-09 08:47:21 -06:00
Eli Barzilay
40124a0619
A long overdue scan to eliminate files without terminating newlines.
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(DrRacket should really do that.)
2011-06-28 02:01:41 -04:00
Robby Findler
7716851cde
2htdp/image: added support for alpha as a mode? argument
2011-01-01 20:01:50 -06:00
Robby Findler
835f7753dc
generalize the color structs to have an alpha field and then use that in the bitmap conversion functions
2010-12-27 21:51:14 -06:00
Robby Findler
7282e19178
tightened up the check on polygon to make sure the posns contain reals
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closes PR 10997
2010-12-25 20:33:33 -06:00
Robby Findler
2dc15061a8
adjust Sam's edit so the file is now properly indented
2010-12-17 13:53:03 -06:00
Sam Tobin-Hochstadt
24ea7d34fc
Fix use of 'fn-name in 2htdp/image error messages.
2010-12-17 12:37:32 -05:00
Sam Tobin-Hochstadt
8a8a8dbe4b
Separate snip% from the gui
2010-12-17 12:32:26 -05:00
Robby Findler
4d04aa2b97
generalize define/chk to work with case-lambda-style functions
2010-12-17 10:02:40 -06:00
Robby Findler
e0b425e5d8
change more cross-collection requires
2010-12-17 10:02:38 -06:00
Robby Findler
b884623da2
use for/list intead of a (one off) map/i function.
2010-12-06 14:22:10 -06:00
Robby Findler
45a97cb561
off by one error in 2htdp/image error messages
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closes PR 11476
2010-12-06 14:22:10 -06:00
Robby Findler
3782c2e749
change save-bitmap in 2htdp/image so that is uses the width and height of the image by default, but also so it accepts two optional arguments to change that.
2010-10-28 17:20:43 -05:00
Robby Findler
d10cd2e6fa
preserve pinholes in overlaying and related functions
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(also started to add "pinhole" as a place, but not done with that yet)
2010-09-06 20:39:12 -05:00
Robby Findler
1fa6be75b5
added image->color-list and color-list->bitmap
2010-09-04 13:52:49 -05:00
Robby Findler
3704e2d69f
added a better explanation of pixels and fixed a bug in save-image
2010-08-28 20:41:58 -05:00
Jens Axel Søgaard
64c3a98e45
Added triangle/sss, triangle/ass, triangle/sas, triangle/ssa, triangle/aas, triangle/asa, and, triangle/saa.
2010-08-05 18:18:06 +02:00
Robby Findler
a612830b8e
added the radial-star primitive
2010-06-25 20:24:18 -05:00
Robby Findler
132867518c
added support for flipping bitmaps
2010-06-18 16:21:14 -05:00
Robby Findler
31b507aa51
Rackety 2htdp/image
2010-05-25 21:35:04 -05:00
Robby Findler
b319039468
fixed a bug in text so that inexact integers are converted to exact ones
2010-05-22 08:58:54 -05:00
Matthew Flatt
28b4043077
rename all files .ss -> .rkt
2010-04-27 16:50:15 -06:00
