Affine Transforms with Demo App

Posted by Dex on Stack Overflow See other posts from Stack Overflow or by Dex
Published on 2012-10-21T09:35:01Z Indexed on 2012/10/21 23:01 UTC
Read the original article Hit count: 168

Filed under:

ios

|

uiimage

|

cgaffinetransform

I have a demo app here https://github.com/rdetert/image-transform-test

After importing an image, you can pinch, zoom, rotate the image. What I want to do is save out a 640x480 image (landscape mode) that looks identical to the live preview. So if there are 100px bars of empty space on the sides, I need the same empty bars in the final output (scaled appropriately).

This is proving to be more difficult than I thought it would be. I can't quite get it to come out right after days of working on it.

The magic method that generates the final image is called -(void)generateFinalImage

Good luck! ;)

© Stack Overflow or respective owner

Related posts about ios

Regarding Xcode SDK IOS 4.2 installation and missing iOS 4.1

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, i have download Xcode SDK 4.2(xcode_3.2.5_and_ios_sdk_4.2_final.dmg) from Apple developer site and installed successfully . when open my old xcode project it shows baseSDk missing ,when i try to change project setting ,i have found and set base SDk as 4.2 it works fine my problem is ,in… >>> More
fatal: pathspec for removing folder in git

as seen on Super User - Search for 'Super User'
I want to remove a folder from a Git repository but I get an error. I tried several commands, and here you can see my errors: selnaz:iOS Lnaz$ ls iOS-Tidinfo mockup readme.txt selnaz:iOS Lnaz$ git rm -r -- iOS-Tidinfo/ fatal: pathspec 'tidinfo/iOS/iOS-Tidinfo/' did not match any files selnaz:iOS… >>> More
Autorotate works for iOS 6 but gives weird behavior in iOS 5

as seen on Stack Overflow - Search for 'Stack Overflow'
I seem to be having the opposite problem from this post: Autorotate in iOS 6 has strange behaviour When I submitted my paid app to Apple, XCode made me update to iOS 6 on my test devices. I used the GUI in XCode to set my app to display only in portrait mode on the iPhone and only in landscape… >>> More
App is getting run in iOS 5.1.1 but crashed in iOS 6.1.3

as seen on Stack Overflow - Search for 'Stack Overflow'
I have implemented below code but app has been crashed in iPad with iOS version 6.1.3,while running perfectly in iPad with iOS version 5.1.1. when I am scrolling table view continuously it is crashed in ios version 6.1.3. what could be the issue. The implemented delegate and data source methods for… >>> More
No provisioned iOS devices are available with a compatible iOS version

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to test my app on an iPhone 3G, however I'm getting this error: No provisioned iOS devices are available with a compatible iOS version. Connect an iOS device with a recent enough version of iOS to run your application or choose an iOS simulator as the destination. Note that: The 3G… >>> More

Related posts about uiimage

Create new UIImage by adding shadow to existing UIImage

as seen on Stack Overflow - Search for 'Stack Overflow'
I've taken a look at this question: http://stackoverflow.com/questions/962827/uiimage-shadow But the accepted answer didn't work for me. What I'm trying to do is take a UIImage and add a shadow to it, then return a whole new UIImage, shadow and all. This is what I'm trying: - (UIImage*)imageWithShadow… >>> More
Images in the project NOT adding to array - don't know why.

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi there, I have to sets of images. Each set has 16 images. One set is called 0.png through to 15.png the other is a0.png through to a15.png. In my app, it loads each one dependent on a variable (which by logging, I have proved it works) here is the code [MemoryManager sharedMemoryManager]; NSLog(@"THEME:… >>> More
how to load multiple images in iCarousel using this code?

as seen on Stack Overflow - Search for 'Stack Overflow'
i'm loading bunch of images in coverflow using i carousel but i'm not getting it?..initially i got Signal sigabart issue..after i edited some of the code the view gets displayed...Am i missing something?... #import "CollectionViewController.h" @interface CollectionViewController () @property (nonatomic… >>> More
XCode Build Parse Error 'Unexpected @ in Program'

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm following a tutorial for creating an animation using Xcode Version 4.5.2 in Mountain Lion 10.8.2. When trying to build the code below, I get a Parse Error Unexpected '@' in program showing up for the 'hopAnimation=' line. While searching, I have found examples that build simple animations in… >>> More
[obj-c] autorelease problem

as seen on Stack Overflow - Search for 'Stack Overflow'
Why the NSArray allocated with arrayWithObjects dealloc automatically if already used by BObject object?? in teory NSArray must remain allocated all the BObject life time... [[BObject alloc] initObjectName:@"oneObject" states: [NSArray arrayWithObjects: [[State alloc] initStateName:@"stand_front"… >>> More