I was there and, as I remember it, there was a presentation on something else
where this was mentioned. IIRC, the topic was Language Oriented Programming
and there was a discussion about how much complexity is okay when you are
programmatically generating DSL code. The presenter mentioned
On Wed, May 12, 2021 at 9:21 PM Ben Greenman
wrote:
> On 5/12/21, Robert Haisfield wrote:
> > Daniel, that's awesome. How would I filter down this list according to
> the
> > regex?
> >
> > (define list-of-files (map path->string (directory-list starting-path)))
>
> You can wrap it in a filter:
p.s: scale-to-fit might be interesting for you and if you don't care about
extra options (for background/alpha etc.) you can construct the pict with
(bitmap path) directly instead of (bitmap (make-object bitmap% ...))
p.p.s: I think there was also a way to convert/use images within picts or
the
On 5/12/21, Robert Haisfield wrote:
> Daniel, that's awesome. How would I filter down this list according to the
> regex?
>
> (define list-of-files (map path->string (directory-list starting-path)))
You can wrap it in a filter:
(define list-of-files (filter (lambda (str) (regexp-match?
Daniel, that's awesome. How would I filter down this list according to the
regex?
(define list-of-files (map path->string (directory-list starting-path)))
On Tuesday, May 11, 2021 at 6:57:03 PM UTC-6 daniel@gmail.com wrote:
> Hi Robert
>
>
> > Even better if I could point the function at a
Personally I use pict and racket/draw instead of htdp/image, because
save-image is png only.
Pict to transform or load the image, racket/draw's bitmap% to save and/or
load the image
(sidenote: in general I find pict more pleasant to work with, but that may
be subjective):
(require pict
Dan, that's awesome. Thank you.
Martin, I would love some way to extract the image metadata from each of
the files outputted by Dan's function. All my function does is take the
current width and height and apply some math to return some new values, so
right now I'm just manually going into
Hi Robert
> Even better if I could point the function at a directory, it finds all of
the images in it, and creates the data structure for me. Any ideas?
You can get the files in a directory using *directory-list *and filter for
the image files using a regex.
(for ([f (directory-list
More specifically, I'm trying to do what I talk about here. Can I do this
in Racket? https://twitter.com/RobertHaisfield/status/1392272268022095872
On Tuesday, May 11, 2021 at 4:42:43 PM UTC-6 Robert Haisfield wrote:
> Okay, so I figured out how to do what I want on individual photos using
>
Hi Robert,
There are some bindings for Magick in the example folder for the FFI
library.
https://github.com/racket/racket/tree/master/pkgs/racket-doc/ffi/examples
The bindings are in magic.rkt and examples of use are in use-magick.rkt
(see the bottom).
/Jens Axel
Den tir. 11. maj 2021 kl.
Racket has the ability to read a variety of different image files. I would go
first to 2htdp/image’s “bitmap/file” to read images. “save-image” can write
images (but only as png files). I believe there are also an array of
lower-level image manipulation functions that are likely to have a less
Alternatively, does the normal images function for Racket work? When I was
looking through the documentation I saw a lot about creating shapes but not
about using image files.
On Tuesday, May 11, 2021 at 2:03:33 PM UTC-6 Robert Haisfield wrote:
> Hmm does the video language work for image
Hmm does the video language work for image files? If so, then I think it
might work.
On Tuesday, May 11, 2021 at 9:03:35 AM UTC-6 Sage Gerard wrote:
> I hope that has what Robert is looking for, but I don't recognize that
> speech. In fact, I have a false memory, because I'm not finding the
I hope that has what Robert is looking for, but I don't recognize that speech.
In fact, I have a false memory, because I'm not finding the speech I'm looking
for on https://con.racket-lang.org/2018/#speakers
On 5/11/21 10:19 AM, Bruce O'Neel wrote:
> This might be it.
>
> [(seventh RacketCon):
This might be it.
> I don't know of one off hand, but I believe RacketCon 2018 (?) included a
> presenter that showed a PostScript-like DSL for designers and artists. If
> pict not cover your needs, maybe dig into the presentations?
> Failing that, can you show what
I don't know of one off hand, but I believe RacketCon 2018 (?) included a
presenter that showed a PostScript-like DSL for designers and artists. If pict
not cover your needs, maybe dig into the presentations?
Failing that, can you show what you'd hope the syntax would look like? That
would
I have to do a bunch of .jpg and .png image resizings and was looking for a
programmatic way to do it. Is their a Racket DSL for this?
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