Brian, If you want an animation of 0.5 second of the demo you shown in the start of this thread, you could do something like this.
sys_timer_z_=: 3 : 0 if. 0>ntry__=: <:ntry__ do. wd 'timer 0 ' return. end. GS_CLEARCOLOR=: pick...@? 144 NB. choose new color wd'psel opengl;setinvalid g' NB. let a paint event happen ) try1 =: 3 : 0 ntry__=: y wd 'timer 500' NB. timer ring each 0.5 sec ) then try1 10 or try1 100 if you want a faster animation, change the 500 inside wd 'timer 500' to a smaller value, -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
