Using this library you can use any Graphics2D API based SVG / graph / chart
library to embed those graphics as vector drawing in a PDF. In combination with
PDFBox PDFRenderer/PageDrawer you can also "rerender" PDF pages and change
certain aspects. E.g. change the color mapping and perform an overfill. Now also
it's possible to setup masking of all draw()/fill() calls. Think of this like an
additional clipping, just that this supports bitmap images and complete complex
drawings (XForm's) as alpha masks.