Framework is for basic modal viewcontroller transitions with human syntax. Special developed for ObjC users

This done with following example

    yourViewController.
    presentTransition(BCTTransitionFlip).
    fromDirection(BCTDirectionTop).
    dismissTransition(BCTTransitionPopRadial).
    popTo(self.testButton).
    withDuration(0.45f);

• human syntax for transitions for ObjC
• swift version is not added now. Use drop-in file - BacteriaSwift
• support segues, not only for modal code presentation
• support different transition types (flat, flip, pop, safari)
• support all side modal controller presentation (note: flat extended)
• support scaling for present and dismiss controller views (note: just for flat)
• support auto-reverse functionality(means you can specify only one type for presental/dismissal and the other will be inferred automatically)

CocoaPods is a dependency manager for Objective-C, which automates and simplifies the process of using 3rd-party libraries like Bacteria in your projects. You can install it with the following command:

$ gem install cocoapods

To integrate Bacteria into your Xcode project using CocoaPods, specify it in your Podfile:

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '8.0'

target 'TargetName' do
pod 'Bacteria'
end

Then, run the following command:

$ pod install

Any instruction should be applied to presented controller. You can get it two ways:

1. Create it manually and present

	//get controller
	BCTPresentedViewController *presented = [self.storyboard instantiateViewControllerWithIdentifier:NSStringFromClass([BCTPresentedViewController class])];
  
  	//bacteria configuration  
    presented.
    presentTransition(BCTTransitionSafari).
    dismissTransition(BCTTransitionFlatParallel).
    toDirection(BCTDirectionTop).
    withDuration(1.45f);
    
    [self presentViewController:presented animated:YES completion:nil];

2. Using segue tracker

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    //get presented controller
    BCTPresentedViewController *presented = segue.destinationViewController;
    
    //bacteria configuration
    presented.
    presentTransition(BCTTransitionFlip).
    fromDirection(BCTDirectionTop).
    dismissTransition(BCTTransitionPopRadial).
    popTo(self.testButton).
    withDuration(0.45f);
}

There is only one required method to call. It's withDuration, because of assigning factory as transition delegate under cover. To help figure out, for which controller you will apply your settings, library use several basic keywords, like: present is used for controller that will be shown, dismiss is used for controller which that be hidden, from is used for controller settings that will be shown, to is used for controller settings that will be hidden

• withDuration(XXX) - use this to specify duration for transition. XXX - float value in seconds. Applied both for present and dismiss transition

• presentTransition(XXX) - use this to specify transition type for presented controller. XXX is one of BCTTransitionType values.

• dismissTransition(XXX) - use this to specify transition for controller, when it will be dismissing. XXX is one of BCTTransitionType values.

• fromDirection(XXX) - use this to specify transition direction for presented controller.

• toDirection(XXX) - use this to specify transition direction, when it will be dismissing. ..* Both for 4 & 5: It works only with BCTTransitionFlatParallel, BCTTransitionFlatCover, BCTTransitionFlip (restricted to first 4 types). XXX is one of BCTDirectionType.

• popFrom(XXX) & popTo(XXX) - use this to pass view which will be anchor for pop animation. (NOTE: ONLY pop transitions)

• fromScale(XXX, YYY) & toScale(XXX, YYY) - use this to determine initial or final scale for controller. XXX & YYY measure in units. Range from 0 to 1. (NOTE: ONLY flat transitions)

• fromPoint(XXX) & toPoint(XXX) - use this to specify direct point from controller starts presentation / dismissal. Possibly unused, and should be discussed for removal in future versions. XXX is point.

Bacteria declares several enum types for configuration.

• BCTTransitionType - main enum which declares different transition types. There are:
  • BCTTransitionFlatParallel - default one. If you need move your controllers simultaneously, use it.
  • BCTTransitionFlatCover - similar to previous, but original controller 'stands still'.
  • BCTTransitionFlip - basic flip transition like default one, extended for all 4 sides.
  • BCTTransitionSafari - transition's similar to safari-tab with no-customisation.
  • BCTTransitionPopRadial - pop, when controller appears/disappears from dot in center of view.
  • BCTTransitionPopLinear - similar to previous, but uses rect with rounded corners instead of center dot.
• BCTDirectionType - enum for determine direction for transitions.(NOTE: ONLY for Flat, FlatCover; for Flip transitions you can use only first 4 sides. Others will be converted to first 4)
  • BCTDirectionTop - top sied.
  • BCTDirectionLeft - left side.
  • BCTDirectionBottom - bottom side.
  • BCTDirectionRight - right side.
  • BCTDirectionTopLeft - top-left corner.
  • BCTDirectionBottomLeft - bottom-left corner.
  • BCTDirectionBottomRight - bottom-right corner.
  • BCTDirectionTopRight - top-right corner.

• Do this one:

    //bacteria configuration
    presented.
    presentTransition(BCTTransitionFlatCover).
    fromDirection(BCTDirectionBottomLeft).
    fromScale(0.5, 0.5).
    dismissTransition(BCTTransitionFlip).
    toDirection(BCTDirectionBottom).
    withDuration(0.45f);

to receive:

• Do this one:

    //bacteria configuration
    presented.
    presentTransition(BCTTransitionSafari).
    withDuration(0.45f);

to receive:

• Do this one:

    //bacteria configuration
    presented.
    presentTransition(BCTTransitionPopLinear).
    popFrom(self.view1).
    dismissTransition(BCTTransitionPopRadial).
    popTo(self.view2).
    withDuration(0.45f);

to receive:

• Add Swift cover file for convenient syntax. Initially it is designated for ObjC users
• Add functionality to retain view within container view. Tip: use snapshot, not addSubview:
• Add separate duration for present / dismiss
• Add transitions for viewControllers in navigation stack

• Add interactivity. Users should easily embed transitions in gestures
• Add support for pop initial point depending on user finger location
• Add spring values for all kind of transitions

• Add support for background color of container for transitions
• Add blur for background container for transitions
• Add transitions for collections

• Review whole library for refactor process

Bacteria initially stands for Beautiful Animation Controller Transition. After some time it was renamed to Bacteria, for short and convenience. In other meaning, it can stands for Basic Controller Transitions.

• Igor Kislyuk

• Not working with unwind segues. Figure it out

MIT License. See LICENSE file for details.