Thank you  for your help Fred

What you are suggesting makes perfect sense to me and I really appreciate your help...unfortunately the user interface in Blender ( for editing the ac file) makes as much sense to me as hand denoting an atomic bomb..... after six months of struggling with the interface, I'm still no further ahead. As for "selecting and modifying" objects attributes ...well lets just say I can't even find them to select!!! As it seems the only "free" AC3 editor available I maybe have to admit that 3d modelling is not for me.

Not giving up, but very disheartened.... will sleep on it and undoubtedly have a new plan tomorrow

Thanks again for your help

:=D ene

From: Frederic Bouvier <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: [Flightgear-users] XML required to make light in object flash
Date: Thu, 20 Apr 2006 08:43:38 +0200

Selon dene maxwell :

> Hi Fred,
>
> Thanks for your reply,
>
> I started out by placing a medium radio-mast in a very obvious(ly wrong)
> location where I could find it at night to observe its current behaviour. > With 098a it doesn't so much flash as twinkle. (albeit with a 1 sec period > of bright twinkling followed by a 1 sec period of not so bright twinkling
> but definitely not an on/off behaviour)
>
> I guessed that this was to simulate some random behaviour was observed from > these type of lights when flying. I started on a section that was originally
>
> <animation>
>   <type>timed</type>
>   <object-name>StrobesOn</object-name>
>   <object-name>StrobesOff</object-name>
>   <use-personality type="bool">true</use-personality>
>   <branch-duration-sec>
>    <random>
>     <min>0.9</min>
>     <max>1.1</max>
>    </random>
>   </branch-duration-sec>
>   <branch-duration-sec>
>    <random>
>     <min>0.9</min>
>     <max>1.1</max>
>    </random>
>   </branch-duration-sec>
> </animation>
>
> I adjusted the min/max numbers up and down both synchronously and
> asynchronously but couldn't observe any logical pattern to the way the
> lights behaved in intensity or timing.
>
> My guess is that the <random> function has something to do with this.
> Looking at it though, I think the random-ness is more to do with a slight
> variation in on/off duty cycle.
>
> Should I be able to observe a distinct on/off behaviour of the lights?

You should be able to get the effect you want if you edit the ac model and make the objects that compose StrobeOff ( RedLight.{12,32,52,72} - see line 72 of
radio-medium.xml ) even dimmer or non existant.

The timed animation is a switch between the objects mentionned ( StrobeOn and StrobeOff ) based on a random duration. If the second object is not visible,
you will have that effect.

-Fred

--
Frédéric Bouvier
http://frfoto.free.fr         Photo gallery - album photo
http://www.fotolia.fr/p/2278  Other photo gallery
http://fgsd.sourceforge.net/  FlightGear Scenery Designer


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Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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