ZVTM is a Zoomable User Interface (ZUI) toolkit,
designed to ease the task of creating complex visual
editors in which large amounts of objects have to be
displayed, or which contain complex geometrical shapes
that need to be animated. It features a graphical object
model that makes the task of creating, modifying, and
animating graphical entities easier, and allows the
definition of custom shapes, all through a simple API. It
also features smooth zooming capabilities (2.5D/
zoomable user interface), multiple independent layers
inside a single viewport, multi-threaded views, and
support for exporting SVG documents.
