Charles Petzold on writing books, reading books, and exercising the internal UTM

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Pants on the Ground: The Silverlight Application

January 23, 2010
New York, N.Y.


Get Microsoft Silverlight

Source code. (Implemented entirely in MainPage.xaml and Leg.xaml.)


Add a torso and this could almost be pornography! Scandalous!

— Bolt, Mon, 25 Jan 2010 10:36:23 -0500

Thanks, now I have that song running in my head yet again. ;)

Paintball Barrel, Mon, 1 Feb 2010 16:14:55 -0500

Thanks for the xaml - always interesting!

The following may be well known but it was a surprise to me.

I wanted to slow down the pants animation so I changed the Storyboard Duration values.

Damned if I could get it to go slower; so I was forced to read the Silverlight documentation.

I found that if the Duration was not specified in the Animation, it effectively defaults to 1 second and it doesn't matter what the Storyboard Duration specifies.

I added Duration "0:0:10" to all the Double and Point Animations and that slowed things down to a nice crawl.

It occurs to me that it would be a good idea to always add Duration to an animation even if default is OK.

Dave, Tue, 2 Feb 2010 14:13:16 -0500

Dave, that is interesting. Is the 1 second default specified in the docs, or is the "effective" you mention just due to cpu speed or other variables?

Paintball Barrels, Tue, 2 Feb 2010 21:53:57 -0500

"An animation uses its Duration property to determine its current value. If you do not specify a Duration value for an animation, it uses the default value of one second."


It was probably a mistake to use the word 'effective' but Duration has a value 'Automatic' and I wasn't sure how that fit in.

I am not clear on what happens if Duration is specified in both the Storyboard and the Animation but I can live with that for now.

Dave, Wed, 3 Feb 2010 10:21:39 -0500

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