Snippets - Utilities

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NOTE: Most of the IM snippets have been tested on IM version 6.3.5 There may be some differences if you are using the code on other versions.

Gravity option - Anthony 15/6/2008

The -gravity option is used to place the object in position. The object can be moved from the position set by gravity by using the geometry option as well e.g. -gravity Center -geometry +10+10

  1. <?php  
  2. $cmd = "-size 500x300 xc:white -font ../verdana.ttf -pointsize 30 ".
  3. " -draw \"gravity center fill black text 0,0 \"Center\" \" ".
  4. " -draw \"gravity North fill black text 0,0 \"North\" \" ".
  5. " -draw \"gravity Northeast fill black text 0,0 \"Northeast\" \" ".
  6. " -draw \"gravity East fill black text 0,0 \"East\" \" ".
  7. " -draw \"gravity Southeast fill black text 0,0 \"Southeast\" \" ".
  8. " -draw \"gravity South fill black text 0,0 \"South\" \" ".
  9. " -draw \"gravity Southwest fill black text 0,0 \"Southwest\" \" ".
  10. " -draw \"gravity West fill black text 0,0 \"West\" \" ".
  11. " -draw \"gravity Northwest fill black text 0,0 \"Northwest\" \" ".
  12. " -bordercolor black -border 1x1 " ;
  13. exec("convert $cmd output.png"); 
  14. // In this case I think a neater way of writting the code is using more php as below.
  15. // Array of values
  16. $arr = array("North", "Northeast", "East", "Southeast", "South", "Southwest", "West", "Northwest", "Center");
  17. // Set $command
  18. $command ="";
  19. // Setup loop for the array
  20. foreach ($arr as $value) {
  21. // Create the individual draw commands and add them to the previous value of $command
  22. $command .= " -draw \"gravity $value fill black text 0,0 $value \" " ;  }
  23. // Create the image using php
  24. exec(" convert -size 500x300 xc:white -font ../verdana.ttf -pointsize 30 $command bordercolor black -border 1x1 output.png" );
  25. //exec("convert $cmd output.png"); 
  26. ?> 

For more examples and information check out the main Imagemagick section.

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