• To: mathgroup at smc.vnet.net
• Subject: [mg91171] Making parts of formulae blinking
• From: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>
• Date: Fri, 8 Aug 2008 07:14:45 -0400 (EDT)

```Dear MathGroup members,

making presentations on Mathematics or Physics, sometimes I need to
discuss independently of one another certain parts of mathematical
expressions belonging to the same formula. This requires to separate
them out or somehow to highlight them. Such an aim may be achieved in
several ways. Say, below  a simple mathematical formula is defined. It
consists of two parts. By a mouse click one of the parts is blended
while the other changes its color to a more striking:

part1 = Graphics[
Text[Style["AB+", "Times New Roman", Italic, 22,
FontColor -> Dynamic[col1]]], ImageSize -> {80, 70}];
part2 = Graphics[
Text[Style["xy", "Times New Roman", Italic, 22,
FontColor -> Dynamic[col2]]], ImageSize -> {80, 70}];
collst1 = {Black, Black};
collst2 = {Blue, Gray};
collst3 = {Gray, Blue};
DynamicModule[{col1 = Black, col2 = Black},
EventHandler[
GraphicsRow[{part1, part2},
Spacings -> -35], {"MouseClicked" :> ({col1,
col2} = {col1, col2} /.{collst3 -> collst1,
collst1 -> collst2, collst2 -> collst3})}]]

Now comes my question:

It would still better catch the eye, if (before the part in question
will definitely change its color to Blue) it blinks few times. Say, it
may change few times its color between blue and gray, or it may
increase and decrease its size few times or so.

Have you an idea of how to reach such a result?

My system is Windows XP/Mathematica 6.0.1

Thank you,
Alexei

--
Alexei Boulbitch, Dr., Habil.
Senior Scientist

IEE S.A.
ZAE Weiergewan
11, rue Edmond Reuter
L-5326 Contern
Luxembourg

Phone: +352 2454 2566
Fax:   +352 2454 3566

Website: www.iee.lu

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```

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