Neil Toronto
a713ca8a8b
Added nan?, infinite?, degrees->radians, radians->degrees, exact-round, exact-floor, exact-ceiling, exact-truncate to racket/math
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Altered TR's random arithmetic testing to generate single-flonums and very small flonums; fails now because of erroneous types
Fixes to sgn, sinh, cosh, and tanh:
* preserve single-flonum-ness
* correct zero sign (-0.0) for negative return values that are smaller than epsilon
* correct behavior with NaN and infinite inputs
2012-06-05 22:40:44 -06:00
Matthew Flatt
68e005fb2c
racket/draw: make-immutable-{color,brush,pen} => make-{color,brush,pen}
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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
10d19bf8d5
adjust 2htdp/image library so that it doesn't create arbitrarily large
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bitmaps when rendering images
closes PR 12277 (except I didn't fix the make-bitmap contract)
include in 5.2
2011-10-11 08:33:50 -05:00
Robby Findler
34581b7050
try using size-in-pixels for the font primitive in 2htdp/image
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closes PR 11883
(the earlier commit with this message was just completely bogus)
2011-09-27 16:24:23 -05:00
Robby Findler
6c91288f2f
speed up bitmap rotation (could probably revisit this to
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speed up flipping (and also to do all three in one pass)
2011-08-23 18:56:51 -05:00
Robby Findler
b425ca90d2
fix bug in the loading of non-alpha bitmaps (also: minor Rackety)
2011-08-23 18:56:50 -05:00
Robby Findler
034e4f2364
add test cases for old file 2htdp/image file formats
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(and fix corresponding bugs)
2011-08-23 07:12:11 -05:00
Robby Findler
1f02106318
2htdp/image
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normalize the internal representation of bitmaps so it always uses an alpha
bitmap instead of sometimes using a mask bitmap and sometimes using alpha.
This also fixes a bug where the library would get consfused when it saved
a bitmap to a file, since it didn't record if it was an alpha bitmap or not.
This improves the save files that contain images, cutting the size for bitmaps
in half (bringing the drracket save file down to a mere 25x larger than the
png file format for the example I was using...)
2011-08-22 19:09:52 -05:00
Robby Findler
8ccf50b84b
use the pre-multiplied alphas when comparing images for 2htdp/image
2011-08-22 19:09:50 -05:00
Robby Findler
56b82ba83c
fix the png conversion code for 2htdp/image images
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closes PR 12061
please merge to the release branch
2011-07-22 08:09:17 -05:00
Eli Barzilay
3157955d40
".ss" -> ".rkt" scan done.
2011-07-02 10:37:53 -04:00
Robby Findler
9e36dc8eb3
adding a missing 2htdp/image color => racket/gui color coercion
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closes PR 11956
2011-06-02 16:27:09 -07:00
Robby Findler
7b4e673081
adjust drracket's value printer to specially treat 2htdp/image images.
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related to PR 11849
2011-04-14 15:26:43 -05:00
David Van Horn
c9519fd113
Fixed various spelling errors.
2011-02-03 17:42:33 -05:00
Robby Findler
670d58d134
added un/cache-image, a function that enables/disables the drawing cache in 2htdp/image images
2011-01-06 14:24:01 -06:00
Robby Findler
dd9e8c530b
fix the use of draw-caret in 2htdp/image
2011-01-03 20:54:07 -06:00
Matthew Flatt
cf344b9926
fix dimensions of cached image bitmap
2011-01-03 19:13:56 -07:00
Robby Findler
30f9c4338f
make sure make-bitmap gets exacts as args
2011-01-03 19:56:37 -06:00
Robby Findler
ac52a63d4a
cache drawing in 2htdp/image snip's draw method
2011-01-03 15:06:41 -06:00
Robby Findler
d886df2acc
2htdp/image: when selected, draw with some transparency so the selection is visible
2011-01-03 14:42:57 -06:00
Robby Findler
7716851cde
2htdp/image: added support for alpha as a mode? argument
2011-01-01 20:01:50 -06:00
Robby Findler
830c797ee4
use pen's alpha color stuff in 2htdp/image
2010-12-31 10:25:01 -06:00
Robby Findler
1d89cfc9d7
2htdp/image fix bitmap scaling to respect alpha channels
2010-12-28 19:08:11 -06:00
Robby Findler
54c337e5d3
2htdp/image: use erase instead of clear to zero out a bitmap
2010-12-27 21:51:16 -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
e896360dcf
take advantage of new equal<%> and snip% setup to make image-snip%s equal to 2htdp/image images (when appropriate)
2010-12-24 06:34:43 -06:00
Sam Tobin-Hochstadt
fb76a887d8
Refactor to create `racket/snip' collection.
2010-12-17 12:32:26 -05:00
Sam Tobin-Hochstadt
8a8a8dbe4b
Separate snip% from the gui
2010-12-17 12:32:26 -05:00
Sam Tobin-Hochstadt
13cae20838
Fixes for PNG conversion, and make `image-snip%' convertible.
2010-12-17 12:32:25 -05:00
Sam Tobin-Hochstadt
d92ce41a6f
Make 2htdp/image produce png-convertible results.
2010-12-17 12:32:25 -05:00
Robby Findler
52092eeb80
remove sillyness
2010-12-17 10:02:35 -06:00
Robby Findler
8add8cfdf5
Revert "change 2htdp/image to try to improve the way drawing works when there is sharing the in the tree"
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This reverts commit 9ce75b8f76
2010-12-12 15:18:06 -06:00
Robby Findler
91aa9f756a
finally, a fix that makes the 2htdp/image test suite pass!
2010-12-12 15:14:04 -06:00
Robby Findler
9ce75b8f76
change 2htdp/image to try to improve the way drawing works when there is sharing the in the tree
2010-12-12 15:14:04 -06:00
Robby Findler
bf62d4b6d6
get two more 2htdp/image test cases to pass
2010-11-25 09:03:06 -06:00
Robby Findler
a658a7620b
a (failed) attempt to fix equality comparison (but at least it is a step in the right direction (I think))
2010-11-25 06:55:00 -06:00
Matthew Flatt
1db27b474f
fix merge mistake
2010-11-05 15:54:56 -06:00
Matthew Flatt
05cfffdf9e
v5.4.99.1, executable-yield-handler', and make-bitmap' etc.
2010-11-05 15:54:50 -06:00
Robby Findler
ae5cd21a1b
2htdp/image: changed the way drawing works, specifically avoid normalization before drawing to preserve sharing
2010-11-04 13:55:41 -05:00
Robby Findler
4941aec617
removed unused argument to normalize-image
2010-11-04 13:55:40 -05:00
Robby Findler
6a414bd18a
fixed some bugs in the way 2htdp/images were marshalled and unmarshalled
2010-10-28 17:20:43 -05:00
Robby Findler
7ef1e8bd90
fixed a bug in the way old 2htdp/image files were parsed (those that contain bitmaps)
2010-10-28 17:20:43 -05:00
Robby Findler
02d8b5cebf
2htdp/image: adjusted the image you get when parsing fails so that it draws inside its bounding box
2010-10-28 17:20:42 -05:00
Robby Findler
a744958fd5
added support to the 2htdp/image library for reading files when there is no GUI around.
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currently the support is limited to images that can only report their sizes and pinholes and where equal?
signals an error unless the arguments are eq?.
2010-10-28 11:32:14 -05:00
Robby Findler
35f64145ca
adjusted the way caching works for bitmaps to be more effective
2010-10-22 06:45:57 -05:00
Robby Findler
1d0ebeae62
added a check to avoid creating a new bitmap struct (so caching works better when you flip images that are not scaled)
2010-10-14 14:05:12 -05:00
Robby Findler
05d16d9311
closes PR 11293
2010-10-07 19:36:18 -05:00
Robby Findler
08b9396e2f
closes PR 11236
2010-09-21 16:47:55 -05:00
Robby Findler
d2e443ac97
made equality check on images sensitive to pinholes
2010-09-06 20:39:11 -05:00
Robby Findler
e3b51e8cf4
made scaling work with pinholes
2010-09-06 20:39:11 -05:00
