[magick-users] making successive display calls open in the same X-Window.

[Anthony Thyssen]

"Rahul Nabar" on  wrote...
| On Thu, Apr 24, 2008 at 6:57 PM,
| <duc.sequere.aut.de.via.decede at imagemagick.org> wrote:
| 
| >
| >  Use two instances of display.  One to display the first image and the
| >  second with the -remote option to tell the first when to switch images.
| >  Alternatively you can use the -update option.
| >
| 
| Thanks duc! The -remote option works great for me. Appreciate the help.
| 
A quick addumdum...  Just add -remote to BOTH the first and second
commands.  The first command will not find a existing display so will
start a new one.  The second will re-use the first.

NOTE that any specia options should be given on the first command,
I have not tested how many of the special option (if any) get transfered
from the second call.  Especially things like -delay controls.

Mind you remember that display is not designed with animations and will
always have at least a 2 second delay, and ignores any GIF disposal
methods present.  Animate will allow you fine time (delay) control as
well as disposal handling, and shaped (non-bordered) windows.

Display provides a background purely because X windows can not otherwise
handle semi-transparnecy that PNG images can make use of.

Animate may not handle semi-transpernacy at all due to its handling of
GIF disposals, though I have not tested it with a background set by a
-backdrop, or a previous frame image using the right disposal method.



If anyone experiments and discovered some other points about these
commands, or interesting uses, please let me know.

PS: see http://imagemagick.org/Usage/scripts/flicker_cmp
for a script using animate instead of display for image comparing.

  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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