azavea/geotrellis — pull request #66 by non (2012-04-09 14:04:45+00:00)
Title: Ported PNG encoder from Java to Scala.

This port also adds 32-bit color (RGBA/Truecolor & alpha) to the
existing 24-bit color (RGB/Truecolor). The current design should
allow support for other formats (e.g. indexed, grayscale, etc).