On 05/10/11 15:26, Stephen Bloch wrote:
I am wondering if there's anything in place already to create an image
thumbnail. This is basically resizing an image.
In the student graphics libraries (2htdp/image and picturing-programs, which is derived from
2htdp/image), you can use "scale" to scale an image up or down by a specified ratio. For
that matter, if you want to scale the x and y dimensions differently, you can use
"scale/xy". I believe this is a constant-time operation; the number-crunching comes
later, when you render it to a bitmap for display on the screen or saving to a PNG file.
Thanks, I can't seem find a way to open image files (jpeg, png, bmp,
etc). Is there anything like that in Racket currently? Or do we need ffi
to libjpeg, libpng, etc.?
--
PMatos
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