Timing animation in a script?

[javagirl]

Thanks David.  I'll look into whether this would work for me, though I
am presenting things on the millisecond range

Cindy

On Jul 9, 4:50 pm, David McFarlane <mcfar... at msu.edu> wrote:
> I know this got answered well enough already, but
> I wanted to build on Michiel's answer and add
> that to the record.  I have done animation like
> this without any Do... While loop at all, just
> using a List object to do the looping.  I set the
> List selection to Sequential, Exit List After,
> e.g., 60 seconds (must use seconds here, not ms),
> and have a single row (level) with my
> Procedure.  Now the List will take care of all the timing.
>
> Then in the list procedure I could put inline script as above, e.g.,
>
> myDisplay.x = myDisplay.x + 1
> myDisplay.y = myDisplay.y + 1
> myDisplay.run
>
> Alternatively, I could put a display object
> (myDisplay in our example) directly into the
> procedure right after the script, and set its
> Duration to 0 (so that the loop simply runs as
> fast as it can).  Now the display object shows up
> directly in the structure instead of staying
> hidden in the script, and the script simplifies to
>
> myDisplay.x = myDisplay.x + 1
> myDisplay.y = myDisplay.y + 1
>
> This is actually rather clean and elegant,
> although I rather prefer not to manipulate
> properties directly in script and instead use
> attribute references.  So, I could use attribute
> references in the Postition X and Y properties of
> the display object or sub-object, e.g., [myX] and
> [myY].  I might also create global variables in
> the User Area to hold values for myX and myY
> between loop iterations, and as before advance
> the position in script before the display object,
> and my script might come out like
>
> myX = myX + 1
> myY = myY + 1
> c.SetAttrib "myX", myX
> c.SetAttrib "myY", myY
>
> (Note that although the variables myX and myY
> have the same names as the context attributes
> "myX" and "myY", these are all distinct objects!)
>
> Admittedly this may seem more troublesome than
> using the direct property manipulation as above,
> so you have to use your judgment according to the
> particular circumstances.  And of course, some
> time before my List I would have to initialize
> myX and myY, but you would have to do that for any of these approaches.
>
> One final issue on using a List to do the loop
> instead of Do... While -- by default the List
> will create a line in the .edat log for every
> loop, which could get messy.  You could prevent
> that by opening up the Properties dialog for the
> list procedure (Edit > Properties... after
> selecting the procedure, or right-click anywhere
> in the procedure window) and then unchecking Log
> Data.  Admittedly this is a very obscure feature
> and will likely confound anyone who later works
> with your program, so perhaps that is reason
> enough to stick with the Do... While approach.
>
> -- David McFarlane, Professional Faultfinder
>
> At 6/25/2009 03:58 PM Thursday, you wrote:
>
> >Thanks for responding, I wound up doing something like what you
> >suggested.
>
> >Cindy
>
> >On Jun 4, 11:05 am, Michiel Spape <Michiel.Sp... at nottingham.ac.uk>
> >wrote:
> > > Hi,
> > > What do you mean by 'show animation I created
> > in..'? Are you trying to show an avi file, for
> > example, or alternatively, move a picture
> > across the screen in 600 ms (say, 1 pixel each
> > 20 ms)? For the latter, I typically set start
> > and end points, and check every time whether
> > the 600 ms have passed. If one would, for
> > example, have an imagedisplay, myDisplay,
> > showing a picture at x,y = 300,400, then moving it, this would be possible:
>
> > > Dim starttime as long
> > > Starttime = clock.read
> > > While (clock.read - starttime) < 600 do
> > >         myDisplay.x = myDisplay.x + 1
> > >         myDisplay.y = myDisplay.y + 1
> > >         myDisplay.run
> > > Wend
>
> > > With the image being in the unreferenced
> > objects ('deleted', which makes a mess of your
> > experiment, but using goto loops isn't that transparent either).
>
> > > For the former, I do not see why one would
> > want to use a while...loop. Isn't the
> > duration/offset enough to time it properly
> > (though i have never used avi files, I wouldn't
> > be surprised if this would be the case)
>
> > > Best,
> > > Michiel
>
> > > Michiel Spapé
> > > Research Fellow
> > > Perception & Action group
> > > University of Nottingham
> > > School of Psychology
>
> > > -----Original Message-----
> > > From: e-prime at googlegroups.com
> > [mailto:e-prime at googlegroups.com] On Behalf Of javagirl
> > > Sent: 03 June 2009 16:23
> > > To: E-Prime
> > > Subject: Timing animation in a script?
>
> > > Hi
>
> > > I would like to show animation I created in a Do..While loop for about
> > > 600 ms.  Does anyone know the best way to do this?
>
> > > Thanks
>
> > > Cindy
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