Works a treat!
Thank you plenty
Richard Poole
----- Original Message -----
From: "Tab Julius" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Wednesday, November 28, 2001 10:32 AM
Subject: Re: <lingo-l> no percentage value
>
>
> That's because by the time you do the float, it's too late.
>
> Things evaluate from the inside of the parentheses out. So first, it does
> current / videoDuration. You say they both have values but don't say what
> they are, but I'll guess they're integers.
>
> Assuming current is less than duration, the result would probably be some
> value less than 1, like 0.xxxx. But since both are integers, that'll just
> convert the answer to 0 when doing integer math.
>
> Then you have 0, and THEN you convert it to a float, making it 0.0, and
> then you multiply it by mysize, but you'll just end up with 0.0.
>
> INSTEAD, if you make one of the values a float BEFORE you divide it, the
> division will be treated as floating point division, and you'll actually
> get a number out of the process. What you really want is something like:
>
> myvalue = (float(current) / videoDuration) * mySize
>
> The difference is subtle, but important. Current is now converted to a
> float BEFORE the division. Alternately you could float(videoDuration).
It
> doesn't really matter which is floated as long as at least one of the
> operands is a float, which will force it to use floating point math and
not
> integer division. You were dividing and then floating the result AFTER
the
> divide, which is too late and gives you zero.
>
> - Tab
>
>
> At 10:01 AM 11/28/01 +0000, Richard Poole wrote:
> >Hi
> >
> >I am currently trying to create a progress bar for a movieclip in
director.
> >I have managed to create the same progress bar before, but for some
reason
> >now it just wont work. I have managed to find the area which is going
> >wrong.
> >
> >myvalue = float(current / videoDuration) * mysize
> >
> >'current', 'videoDuration' and 'mysize', all have values, however when I
try
> >read 'myvalue' no value is displayed.
> >???????????
> >
> >Where am I going wrong?
> >_______________________________________________________
> >
> >global myvalue
> >global mysize
> >global videoDuration
> >global videoSprite
> >
> >property progressbar
> >property videoSprite
> >property videoDuration
> >property mysize
> >
> >on beginSprite me
> > initialize me
> >end beginSprite
> >
> >on prepareframe me
> > myupdate me
> >end prepareframe
> >
> >on initialize me
> > videoDuration = sprite(videoSprite).duration
> > mysize = sprite(progressbar).width
> >end initialize
> >
> >on myupdate me
> > current = sprite(videoSprite).movieTime
> > myvalue = float(current / videoDuration) * mysize <<<<< The
problem
> >area
> > sprite(progressbar).width = myvalue
> > member("check").text = string(myvalue) <<<<using
this
> >to debug
> >end myupdate
> >
> >on getPropertyDescriptionList me
> > description = [:]
> > addprop description, #videoSprite, [#comment:"Video Sprite",
> >#format:#sprite, #default:0]
> > addprop description, #progressbar, [#comment:"Progress Sprite",
> >#format:#sprite, #default:0]
> > return description
> >end getPropertyDescriptionList
> >__________________________________________________________________
> >
> >Many thanks in advance
> >
> >Richard Poole
> >
> >
> >[To remove yourself from this list, or to change to digest mode, go to
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> >Lingo-L is for learning and helping with programming Lingo. Thanks!]
>
>
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>
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