I think you have to construct the transform matrix box_area-to-thumbnail, then apply the scale thumbnail-to-big-picture.
> m = new matrix; > m.translate(-area.x,-area.y); > s = slider.value/100; > m.scale(s,s); > s = big.width/thumbnail.width; > m.scale(s,s); > big.transform.matrix = m; > thomas --- http://www.web-attitude.fr/ msn : [email protected] softphone : sip:[email protected] <sip%[email protected]> téléphone portable : +33601 822 056 2009/8/21 grimmwerks <[email protected]> > > > Argh. Sorry about that. Changed to the real link rather than dev. > > > > On Aug 21, 2009, at 1:25 PM, Wesley Acheson wrote: > > > > Just FYI we can't view that without a username / password > > On Fri, Aug 21, 2009 at 7:03 PM, grimmwerks <[email protected]> wrote: > >> >> >> I'm building a sort of image zoomer/viewer -- you've seen it all before -- >> one large image that scales with a smaller image showing the full image. As >> you zoom into the large image, the smaller 'viewer' shows a square showing >> the area that is being viewed in the larger view. Dig? >> Ok -- so I've got the smallbox scaling down while the larger scales up - >> and the views coincide, working perfectly. >> >> But when I have the drag able small area move around - the larger view >> does NOT display the same area. >> >> I've tried more extravagant ways of trying this - creating a new matrix, >> scaling to the large image, then translating the smaller rects negative of >> the x and y of the smaller view - but nothing works. >> >> I've tried this simple example - and in this case the 'test' is a canvas >> I'm using to just make sure that the smaller matrix is sound: >> >> private function boxMouseDrag(e:MouseEvent):void{ >> borderBox.transform = box.transform; >> var smM:Matrix = borderBox.transform.matrix.clone(); >> smM.invert(); >> //logit("small: " +smM.toString()); >> //logit("big: " + big.transform.matrix.toString()); >> big.transform.matrix=smM; >> >> smM.invert(); >> test.transform.matrix = smM; >> } >> >> >> But the larger one is way off. >> >> An example can be seen at >> http://grimmwerks.com/player/creativity-online.com/player.html >> >> I'd really appreciate any help you can offer; I don't know why it's off. >> I'm guessing that I have to scale the larger matrix even *more*. >> >> >> >> >> > > > > >
