Anti-Grain Geometry (AGG) is an Open Source, free of charge
graphic library, written in industrially standard C++. The terms and
conditions of use AGG are described on The License page. AGG doesn't
depend on any graphic API or technology. Basically, you can think of
AGG as of a rendering engine that produces pixel images in memory
from some vectorial data. But of course, AGG can do much more than
that. The ideas and the philosophy of AGG are:

* Anti-Aliasing
* Subpixel Accuracy
* The highest possible quality
* High performance
* Platform independence and compatibility
* Flexibility and extensibility
* Lightweight design
* Reliability and stability (including numerical stability)