[comp.sys.mac.hypercard] fast icon display and removal

LAAAA43@cc1.kuleuven.ac.be (Peter Arien) (04/19/91)

Posting for a friend who is a psychiatrist working in the
neurophysiological department of our university clinic.

He has written a test in hypercard to see how fast children
can see whether two paires of icons are the same or different.
This means each pair of icons is presented for the shortest
possible time.

He managed to get it down to appr. 60 millisecs
by putting two big white buttons on the screen, then building
the icons under those buttons and then removing and immediatly
placing back the button to show the pair of icons underneath it.
He would like to do this a lot faster. Could anybody tell me (and
him) if it is possible to do this in hypercard as fast as
the screen refresh rate (appr. 16 millisecs?).
If not, I'll have to start digging up my Pascal...

Thanks.


Peter.

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Peter Arien                          =  LAAAA43@cc1.kuleuven.ac.be =
Academic Computing Center            =  LAAAA43@blekul11           =
K.U.Leuven - Belgium                 =  'It was clear as mud ...'  =
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