the following design goals:
* JTS conforms to the Simple Features Specification for SQL published by the
Open GIS Consortium
* JTS provides a complete, consistent, robust implementation of fundamental
2D spatial algorithms
* JTS is fast enough for production use
* JTS is written in 100% pure Java(TM)
* JTS is open source (under the LGPL license)
<http://www.vividsolutions.com/Jts/JTSHome.htm>