As i am writing Brep Datastructure and operations on them , i had to come up with some basic 3D maths util classes,
like rotation of a Vector about a given Axis .
Also basic classes for primitves say Line : From which i can compute distance , intersection pt etc.
I am using VecMath Libs : Its a Open-Source 3D Math util library resulted as sub-project in Java3D devlopent .
Can be downloaded from this link vecmath.
As of now i am uploading three java files.