An fast realtime interactive fractal zoomer
3.3.6 Registering of filter
Once filteraction structure is filled, filter is done and you should try
to enable it. To enable it in user interface you need to edit ui/ui_helper.c,
add filter into uih_filters structure and increase uih_nfilters.
Note that order of filters in uih_filter is significant, since same order
is kept in filter queue, so you should specify if you want to be called
before/after filter xy.
Then it is high time to start experimenting.
Good luck!
