Upcoming Webinar: Using a VideoBrush in Silverlight for a Media Magnifying Glass

Noticias externas — Tue, 05 Feb 2008 06:01:37 GMT

I've been working on a Silverlight 1.0 sample that I'd like to share with you for two reasons

re: Upcoming Webinar: Using a VideoBrush in Silverlight for a Media Magnifying Glass

Deyan Vachev — Tue, 05 Feb 2008 09:44:07 GMT

Hi Michael,

I'm one of the guys that work on the Bookvar.net project that you blogged a while ago on your blog. Your sample idea is great and I'm willing to help you on the math side. Currently I'm working on a commercial project that does some thing quite similar to this and I got it zoom correctly so I'm pretty sure I can help. Later today I'll look at your sample and send you back some suggestions on how to solve the problem.

Greetings,

Deyan

Using a VideoBrush in Silverlight 1.0 for a Magnifying Glass

POKE 53280,0: Pete Brown's Blog — Tue, 05 Feb 2008 19:52:46 GMT

Michael Sherotter ( Synergist ) created a nice Silverlight 1.0 sample showing how to use the videobrush

re: Upcoming Webinar: Using a VideoBrush in Silverlight for a Media Magnifying Glass

Brian Henderson — Thu, 07 Feb 2008 23:28:32 GMT

Will a recording of this webinar be made available? Are past webinars available for viewing? (Perhaps an opportunity for a Silverlight application.. ;) Thanks,

re: Upcoming Webinar: Using a VideoBrush in Silverlight for a Media Magnifying Glass

Michael S. Scherotter — Fri, 08 Feb 2008 01:27:56 GMT

Brian,

As I wrote in the post, the webinar will be recorded. All of my past webinars can be found here: http://listas.labs.live.com/user/synergist/rss/cbed11a9-a1a2-4209-b4a8-d669e4c477e5

Michael

re: Upcoming Webinar: Using a VideoBrush in Silverlight for a Media Magnifying Glass

Ben Hayat — Sat, 09 Feb 2008 06:49:38 GMT

Any chance you can do your Webinar in SL 1.1(2.0) with C#?

Silverlight Cream for February 11, 2008 - 2 -- #196

Community Blogs — Tue, 12 Feb 2008 01:59:37 GMT

When you get backed-up, it's not pretty... this isn't everything: Denislav Savkov's BarChart

re: Upcoming Webinar: Using a VideoBrush in Silverlight for a Media Magnifying Glass

rambler.elf — Wed, 27 Feb 2008 06:26:53 GMT

Hi Michael,

today, when I was in the pete blog (http://community.irritatedvowel.com/blogs/pete_browns_blog/default.aspx), I've seen a picture of your application, really nice, good work ;)

as I see this application is published about 23 days, but I can't see any comment about your calling for math help (maybe you corrected that or someone sent an e-mail to you), but let me to post myself correction :

Synergist.Magnifier.prototype._UpdateTranslation = function()

{

///<summary>Update the translation of the VideoBrush to reflect the magnification and position of the magnifying glass</summary>

if (this.MediaElement.NaturalVideoHeight == 0)

{

return;

}

// the position of the magnifier

var left = this.Canvas["Canvas.Left"];// + this.Canvas.Width / 2;

var top = this.Canvas["Canvas.Top"];// + this.Canvas.Height / 2;

var mediaLeft = this.MediaElement["Canvas.Left"];

var mediaTop = this.MediaElement["Canvas.Top"];

var halfWidth = this.Canvas.Width * 0.5;

var halfScaledWidth = halfWidth * this.BrushScale.ScaleX;

var offsetX = left - mediaLeft;

var offsetY = top - mediaTop;

var naturalAspect = this.MediaElement.NaturalVideoWidth / this.MediaElement.NaturalVideoHeight;

var videoAspect = this.MediaElement.Width / this.MediaElement.Height;

var topMargin = 0;

var leftMargin = 0;

if (naturalAspect > videoAspect)

{

var visibleHeight = this.MediaElement.Width / naturalAspect;

topMargin = this.BrushScale.ScaleX *(this.MediaElement.Height - visibleHeight) / 2;

}

else

{

var visibleWidth = this.MediaElement.Height / naturalAspect;

leftMargin = this.BrushScale.ScaleX * (this.MediaElement.Width - visibleWidth) / 2;

}

this.BrushTranslation.X = mediaLeft+leftMargin-(offsetX *this.BrushScale.ScaleX)- (this.Canvas.Width*this.BrushScale.ScaleX) / 2;

this.BrushTranslation.Y = mediaTop+topMargin-(offsetY *this.BrushScale.ScaleX)- (this.Canvas.Height*this.BrushScale.ScaleX)/ 2;

window.status = mediaLeft+'|'+scaleOffsetX+'|'+offsetY+'|'+this.BrushScale.ScaleX.toString();

}