Graphics rendering

Rails
1

Hey

Has anyone got a graphics server running alongside ruby on rails? Kind
of new to graphics rendering on a web server, so some general tips on a
successful direction to go in would be great. I need it for automatic
rescaling of images, similar to flickr.

Thanks,

RGC

2

Rebecca C. wrote:

Hey

Has anyone got a graphics server running alongside ruby on rails? Kind
of new to graphics rendering on a web server, so some general tips on a
successful direction to go in would be great. I need it for automatic
rescaling of images, similar to flickr.
(
Thanks,

RGC

Have you looked at ImageMagic
(ImageMagick – Convert, Edit, or Compose Digital Images) and rmagick
(ImageMagick – Convert, Edit, or Compose Digital Images)?

Rmagick is ruby bindings for imagemagick.

Works great.

Gareth

3

Rebecca

> I need it for automatic rescaling of images, similar to flickr.

As indicated higher in the thread, the file_column plugin is a
no-brainer when it comes to resizing with RMagic.
You only have to make sure that the original is not smaller than the
target size (like resizing 16x16 => 100x100). It works - no crash or
error -, but it doesn’t make sense, and the resulting mozaic is ugly.

An alternative is to resize in the browser with javascript.
Example:

http://www.agilepartners.com/blog/2005/12/07/iphoto-image-resizing-using-javascript/

(note: look for the slider just above the pictures. It is not very
visible in Safari.)

Alain

4

Try ImageMagick. It is a set of command line utitlities, and
I think there is a rails implementation. If not, you can always
exec the appropriate commands. Mogrify is probably the command
line version you are looking for.

On 3/1/06, Rebecca C. [email protected] wrote:

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