[magick-users] Shadow using only mogrify

[Timothy Armes]

>
> | Which brings me to my second question.  Can I do the equivalent of the
> | -dissolve operator on the image being drawn, before it's overlaid ?
> |
> For single images, yes.  The simplist is
>
>    -matte -channel A -evaluate multiply .6 +channel
>
> This just disolves (make semi-transparent) all the images in the current
> image list by 60%


Sorry, I'm not quite following you.  How would I apply that to this command,
for example, so that castle.gif's opacity is reduced before it's overlaid?

mogrify -gravity Center -draw "image Over 0,0 0,0 'castle.gif'" test.jpg