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 <[email protected]> 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, [email protected] 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<[email protected]> 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 ]=================================================== >> ... > > _________________________ > Racket Developers list: > http://lists.racket-lang.org/dev _________________________ Racket Developers list: http://lists.racket-lang.org/dev
