> Hi Derek,
> 
> could you just use http://www.exslt.org/math/, these are supported by
> the xalan processor
> http://xml.apache.org/xalan-j/apidocs/org/apache/xalan/lib/ExsltMath.html
> 
> and include the constant PI.


or just the sin/cos functions/templates of FXSL, which are written in XSLT.



Cheers,
Dimitre Novatchev.