[racket-dev] [plt] Push #24770: master branch updated

I think that Ryan had some stuff along these lines that he wrote for a
scribble talk?

Robby

On Tue, May 29, 2012 at 11:35 PM, Neil Toronto <neil.toronto at gmail.com> wrote:
> I didn't think it was fair to make everyone wait for the Typed Racket code
> behind the icons to be compiled but be the only person who could use it. So
> I've made it public. Now
>
>    (require images/flomap)
>
> imports about half the Typed Racket goodies behind the icons. (The ray
> tracer itself is the other half, which I'll get to sometime.)
>
> I have a hunch that there's a lot of image-processing code scattered around
> the codebase. It might be good to centralize most of it. Can some of you
> that have written or used other image-processing code scan through the
> images/flomap docs and see how feasible that is?
>
> FWIW, there are some features that are exported but not documented yet:
>
>  * arbitrary spatial transformations (rotation, warps, etc.)
>  * outline and shadow effects
>
> You shouldn't need to worry about performance. A best-case example:
> blur-bitmap! is only slightly faster (30% by my tests) than converting the
> bitmap to a flomap, applying flomap-blur, and converting back to a bitmap.
> And blur-bitmap! is in-place, uses the same algorithm, and also uses unsafe
> ops. TR-optimized floating-point code keeps up just fine.
>
> Neil ⊥
>
>
> On 05/29/2012 06:09 PM, ntoronto at racket-lang.org wrote:
>>
>> ntoronto has updated `master' from 2f23f1b6b3 to c05c45e0e9.
>>   http://git.racket-lang.org/plt/2f23f1b6b3..c05c45e0e9
>>
>> =====[ 2 Commits ]======================================================
>>
>> Directory summary:
>>   38.5% collects/images/icons/
>>   14.3% collects/images/private/
>>   40.2% collects/images/scribblings/
>>    6.9% collects/images/
>>
>> ~~~~~~~~~~
>>
>> c7bea1d Neil Toronto<ntoronto at racket-lang.org>  2012-05-29 17:50
>> :
>> | images/flomap: public interface to floating-point bitmaps used by ray
>> tracer
>> :
>>   A collects/images/flomap.rkt
>>   M collects/images/icons/arrow.rkt              |   34 +-
>>   M collects/images/icons/control.rkt            |   54 ++-
>>   M collects/images/icons/file.rkt               |   92 +++---
>>   M collects/images/icons/misc.rkt               |  399
>> +++++++++++------------
>>   M collects/images/icons/stickman.rkt           |  149 ++++-----
>>   M collects/images/icons/style.rkt              |   18 +-
>>   M collects/images/icons/symbol.rkt             |   94 +++---
>>   M collects/images/logos.rkt                    |  140 ++++----
>>   D collects/images/private/draw-predicates.rkt
>>   M collects/images/private/flomap-blur.rkt      |   24 +-
>>   M collects/images/private/flomap-composite.rkt |  147 +++++----
>>   M collects/images/private/flomap-convert.rkt   |    4 +-
>>   M collects/images/private/flomap-effects.rkt   |   18 +-
>>   M collects/images/private/flomap-gradient.rkt  |    4 +-
>>   M collects/images/private/flomap-pointwise.rkt |    5 +-
>>   M collects/images/private/flomap-resize.rkt    |   87 ++---
>>   M collects/images/private/flomap.rkt           |   12 +-
>>   M collects/images/private/flomap-struct.rkt    |   13 +-
>>   A collects/images/scribblings/flomap.scrbl
>>   M collects/images/scribblings/images.scrbl     |    9 +-
>>   M collects/images/tests/effects-tests.rkt      |    6 +-
>>
>> =====[ Overall Diff ]===================================================
>> ...
>
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