In Inkscape if you have two filled circles. A big solid red one and a smaller, blurred and pinkyÂ one, like this:
You can use the mask to trap one inside another to create a light effect.
Metaphorically, I drew a mask using the mask effect:
At November, 26, on the main page of java.sun.com at the section From The Blogosfere
Thanks for all comments, suggestions and feedback on the post Inkscape and JavaFX working together. The JavaFX guru James Weaver posted about on his blog and it also figured out on java.sun.com on the From The Blogosfere section.