[magick-users] having a problem with rotation (transparent bg) after upgrade

[Anthony Thyssen]

Stas Bekman on  wrote...
| Hi,
| 
| ImageMagick used to make a smooth image rotation before. Now I've
| upgraded to the latest version 6.3.7 (same issue with 6.3.2), and now
| the rotation leaves a jiggy outline
| 
| Here is the input file:
| 
| in.jpg
| http://img2.freeimagehosting.net/image.php?b7174eb966.jpg
| 
| I run:
| convert -rotate 5 -background "transparent" in.jpg out.jpg
| 
| here is the output:
| http://img2.freeimagehosting.net/image.php?007de57566.jpg
| 
| can you see the border being all messed up now?
| 
Try ordering the arguments right...
Also make sure the image has a alpha channel

   convert in.jpg -matte -background "transparent" -rotate 5 out.jpg

| I need to use transparent background since the image is going to be
| composited on top of other images.
| 
| Is there some extra argument that I need to add now? (which I'd imagine
| used to be added by default in the past, but it's no longer the case)
| 
See IM examples, Image rotation.
  http://imagemagick.org/Usage/distorts/#rotate


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