VMD-L Mailing List

From: Jérôme Hénin (jerome.henin_at_uhp-nancy.fr)
Date: Thu Feb 23 2006 - 17:04:47 CST

Hi Vlad,

There is a pretty simple way of adding text to a series of pictures in an
automated way. I do it using the 'convert' command-line tool from ImageMagick
(a great package, by the way), called from a script.

For instance, you could use a command like :

convert -font Bookman-Light -fill white -stroke white -pointsize 30 -draw
'text 100,100 "this is a legend"' initial0000.ppm final0000.ppm

and loop over all the image files.

Hope it helps,
Jerome

Le Jeudi 23 Février 2006 20:08, Vlad Cojocaru a écrit :
> Thanks John for the ellaborate answer ...
>
> It looks like its pretty complicated ...
>
> I agree that using Photoshop or GIMP or other such tools is what one
> should do (and what I did whenever I needed to) but I will tell you why
> I was asking.. I am using Axel's script to draw the time bar during the
> trajectory ... If I make a movie of the trajectory, the time bar would
> appear without any labels if I render the images with Tachyon (which of
> course gives much better quality than snapshot)... Obviously its not
> feasible to edit each image used to create the movie ...
>
> But since it seems a complicated procedure to implement text rendering
> in Tachyon... its probably not worth the effort since it would be
> usefull only for movies. For pictures one would anyway want to use
> different fonts and other stuff ....
>
> vlad