I suspect that the other app is doing the scaling using UIImage or CoreImage (which you can control the AA and such).
Once the zoom level gets to a certain point, they swap the image, so you are now zooming into a smaller, but better scaled, image. This is kinda normal for textures, too - have a well-rendered 16x16, 32x32 etc up to 2048x2048 image, and swap them as a higher level of detail is needed. >From a bit of a google around: WWDC 2011 Session 104 - Advanced Scroll View Techniques Start here (the link is not easy to find on the apple site): https://developer.apple.com/videos/wwdc/2012/ Obv, you need a developer account for that :) On Mon, Jul 16, 2012 at 3:22 PM, lampshade9909 <[email protected]> wrote: > I am using UIScrollView to zoom in and out on a high resolution image. I'm > not having a problem implementing the UIScrollView functionality; my issue > is with zooming out and the image getting "jaggy" as if it needs > anti-aliasing or something. > > Here are screenshots of what it looks like in my project: > Example of Actual size before UIScrollView zooms out: > http://monotouch.2284126.n4.nabble.com/file/n4655991/NormalSize.png > > Example of what it looks like after zooming out: > http://monotouch.2284126.n4.nabble.com/file/n4655991/ZoomedOut_jaggy.png > > Look how jaggy and bad the second image looks compared to the first... is > there something I'm doing wrong? > > What I'm trying to do is identical to the iPad/iPhone app called Fotor HD. > The app has a series of very high resolution images and you can zoom in and > out of them. On there app, when you zoom out all the way, they look crystal > clear. But on mine, when I zoom out it looks like crap! > > -- > View this message in context: > http://monotouch.2284126.n4.nabble.com/Problem-viewing-High-Res-Image-with-UIScrollView-anti-aliasing-issue-tp4655991.html > Sent from the MonoTouch mailing list archive at Nabble.com. > _______________________________________________ > MonoTouch mailing list > [email protected] > http://lists.ximian.com/mailman/listinfo/monotouch -- Nic Wise t. +44 7788 592 806 | @fastchicken | http://www.linkedin.com/in/nicwise b. http://www.fastchicken.co.nz/ mobileAgent (for FreeAgent): get your accounts in your pocket. http://goo.gl/IuBU Trip Wallet: Keep track of your budget on the go: http://goo.gl/ePhKa Earnest: Self-employed? Track your business expenses and income. http://earnestapp.com Nearest Bus: find when the next bus is coming to your stop. http://goo.gl/Vcz1p London Bike App: Find the nearest Boris Bike, and get riding! http://goo.gl/Icp2 _______________________________________________ MonoTouch mailing list [email protected] http://lists.ximian.com/mailman/listinfo/monotouch
