libgdx/libgdx — pull request #114 by Seraphim6x7 (2012-11-14 13:04:45+00:00)
Title: optionally check for modifications before packing

I've added #isModified to TexturePacker2. This uses the modification timestamps to see if the pack file needs to be rebuild.
There are also two variants of #processIfModified for convenience.

For reference, checking the timestamps takes < 20ms while generating the pack file for my project takes up to 1600ms (in debug mode) or 1300ms (release build).