It would be nice to have the batik rasterizer ant task available on Gentoo. http://xmlgraphics.apache.org/batik/tools/rasterizer.html#task describes the task and indicates that it should be built from source. I created an ebuild for it, which I'll upload to java-experimental shortly.
It's now committed to http://overlays.gentoo.org/proj/java/browser/java-experimental/dev-java/ant-batik In case it ever gets moved, here is the initial commit: http://overlays.gentoo.org/proj/java/browser/java-experimental/dev-java/ant-batik?rev=7540
Thanks. However, serkan already (10 months ago) added the task to the batik-1.6-r4 in java-overlay. And I've now moved it to the tree. An extra ebuild for this is imho not needed, as it's just a small extra jar (could be USE flagged anyway) and more importantly, adds no extra dep, cause you need ant-core anyways. Thus, sorry, removed your ebuild.
