Can't append vertically?

[jhfry]

Windows bat script:

Code: Select all

convert ^
   ( ^
      -size 1280x1024 ^
      xc:none ^
      -gravity center ^
      -font Palatino-Linotype-Bold ^
      -pointsize 20 ^
      -density 96 ^
      -fill white ^
      -stroke black ^
      -annotate 0 "Small Text" ^
      ( ^
         +clone ^
         -background black ^
         -shadow 70x2+2+2 ^
      ) ^
      +swap ^
      +composite ^
      -trim ^
      -gravity north ^
   ) ^
   ( ^
      -size 1280x1024 ^
      xc:none ^
      -gravity center ^
      -font Palatino-Linotype-Bold ^
      -pointsize 45 ^
      -density 96 ^
      -fill white ^
      -stroke black ^
      -annotate 0 "Large Text" ^
      ( ^
         +clone ^
         -background black ^
         -shadow 70x4+5+5 ^
      ) ^
      +swap ^
      +composite ^
      -trim ^
      -gravity north ^
   ) ^
   +append ^
output.png

Works, the two shadowed text blocks are appended horizontally.

If I change the +append to -append to append them vertically, I get two separate images called output-1.png and output-2.png. I don't get it, why can it do it horizontally but not vertically?

I experimented with changing the text of the second line and it works so long as the first layer is wider than the second. I don't understand why there is a restriction, or how to work around it! This will eventually be used in a script and therefore I cannot statically assign any sizes. I also tried doing a +swap just before the -append... and again it works as the top layer is larger than the bottom when they are swapped.

I am guessing that append will not allow an increase in the width during a vertical append, though it does allow an increase in height during a horizontal append. Perhaps its a bug?

Help please!

[anthony]

A few things first off.

• +composite should be -composite, though that should make no difference.
• Also -gravity north at the END of the parenthesis blocks, does not do anything there, it really should be placed before the append, which is where it is actually used.

I converted the script to linux, replaced the +append with -append and for some reason it is not applied at all!

Looks like a gravity related bug, as when I remove the -gravity north is started working, adding -gravity north or -gravity center before the -append and it fails again.

[jhfry]

Trust me, I tried that... here is my simplified code:

Code: Select all

convert ^
   ( ^
      -size 1280x1024 ^
      xc:none ^
      -gravity center ^
      -font Palatino-Linotype-Bold ^
      -pointsize 20 ^
      -fill white ^
      -annotate 0 "Small Text" ^
      ( ^
         +clone ^
         -background black ^
         -shadow 70x2+2+2 ^
      ) ^
      +swap ^
      -composite ^
      -trim ^
   ) ^
   ( ^
      -size 1280x1024 ^
      xc:none ^
      -gravity center ^
      -font Palatino-Linotype-Bold ^
      -pointsize 45 ^
      -fill white ^
      -annotate 0 "Large Text" ^
      ( ^
         +clone ^
         -background black ^
         -shadow 70x4+5+5 ^
      ) ^
      +swap ^
      -composite ^
      -trim ^
   ) ^
   -append ^
output.png

Still the same problem. If I take out the "-gravity center" from each line of text, I get a single image output... but much of each line is cut off. (I placed the text at the center of a large canvas to ensure that none of it gets clipped when it is shifted by -shadow).

Each of the two output images are exactly what I'm looking for... but I cannot have them append in the correct order. I can put the "large text" line above the "small text" line... or I can append them horizontally. It's really strange.

Is there a way to trim each line vertically but not horizontally... then I'd have two 1280x?? layers that should append vertically just fine... then I could simply trim again after appending them.

Thanks for your help!

[magick]

The problem you reported is fixed in ImageMagick 6.4.8-3 Beta available sometime tomorrow. Thanks.

[jhfry]

Thanks Magick... I thought I was going crazy!