Hi Lous, this example may be useful: http://rosettacode.org/wiki/Animate_a_pendulum#J
On Wed, Feb 8, 2017 at 11:48 AM, Raul Miller <[email protected]> wrote: > I think sys_timer is the right way to go for this kind of thing. > > That said, if you are doing something interactive (rather than canned) > you should also think about driving motion from mouse events. > > Good luck, > > -- > Raul > > > On Wed, Feb 8, 2017 at 11:42 AM, Louis de Forcrand <[email protected]> > wrote: > > Hi everyone, > > > > I've been looking into the Qt facilities available in J recently, and I > read that 2D graphics are best done with gl2. > > > > I hacked together a simple program that displays a ball which bounces > around the isidraw container. Having never really done any graphics-related > programming, I used the window driver's timer function to call sys_timer at > regular intervals, which erases the previous circle, draws the new one, and > updates speed and position global vars. > > The advantage of using the wd timer is that I can create a button which > calls "wd 'timer 0; pclose'" in order to exit the program in a clean > fashion without having to break. > > > > I suspect there is a better way to do this; how would the seasoned J > programmers on this forum go about creating such an animation? > > > > All help appreciated! > > Louis > > > > PS: I hardly have any web-related (html, css, php, etc.) programming > skills, but any info about doing this in JHS is welcome as well. > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
