The goal is for all gbAnimator objects (node and links) to be able to collide with
one another. However, at this time only vertical or horizontal links are able to
collide with nodes - and then at only limited speeds.
To turn a link into a barrier, simple select the link and set the "Use as Barrier"
link property. A barrier link will be display as a thick red line (when selected,
a link uses a thin blue line, so you'll have to de-select a link to see the thick
When using a barrier it is normal, but not a requirement, to lock the end points
so that the barrier remains where you've created it (or moved it).
As a convenience for creating more complicated barriers, gbAnimator provides a
"Convert Object to Barrier" toolbar button. This will convert all links, within
the currently selected object, to barriers. It will also lock all nodes within