[magick-users] Magick++ fillPattern() to preserve pattern transparency

[Anthony Thyssen]

Elie Zedeck RANDRIAMIANDRIRAY on  wrote...
| Hi again everyone,
| 
| I have found the solution to my challenge.
| 
| The trick is this:
| 
| 1. Create a copy of the original image (same dimension)
| 2. Based on the size of the pattern image (the GIF file), run a little
| loop on the X and Y coords that will used composite to place the image
| on the copy with the transparency preserved.
| 3. Use that copy image as the fillPattern for the original image.
| 
| Hope that will help you guys who are trying to do the same thing.
| 
For an alturnative method of generating a tiled canvas, that will also
tile an animation (sequence of images) using a trick of the new -distort
operator, see IM examples, Animation Modifictions,  Glitter Tiles...

   http://imagemagick.org/Usage/anim_mods/#glitter_tiles

Other non-animation methods are also provided in IM examples, Canvas
Generation, Tiles Canvases...
   http://imagemagick.org/Usage/canvas/#tile

There are lots of ways, without needing to do the pixel transfer
yourself, and all methods should be about to be done from the various
API languages.


  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
 -----------------------------------------------------------------------------
  "... Ken Thompson, Dennis Ritchie and Brian Kernighan have admitted that
  the operating system and the programming language that they designed is a
  clever April fools-day prank, that has survived the last 20 years. ..."
 				---  Vogon News Service  -- April 1, 1991
 -----------------------------------------------------------------------------
     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/