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Composite Components in Swift: Dial Based RGB / CMYK Picker
Continuing on from my last blog post, Creating a Numeric Dial Control in Swift for iOS, this post looks at creating a composite component using more that one of my dial controls. The example I've...
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Populating a UIPickerView in Swift
I thought it would be an interesting exercise to add a picker control (which Flex developers will know as a SpinnerList) to my dial based colour picker. The new control has a hard coded list of colours...
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Custom Item Renderers for UIPickerViews in Swift
Following on from my recent post about implementing UIPickerViews, this post looks at creating a custom item renderer for the same control. The UIPickerView in my demonstration displays a list of...
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Swift Tone Curve Editor
One of the nice features in my Nodality application is a little widget for editing the points of a tone curve. A tone curve changes the luminosity of an image for a given tonal range. For example,...
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Two Handy Swift Extensions: Hermite Splines and Image Resizing
As part of my Swift Image Tone Curve Editor, I wanted to draw a smooth spline passing through a number of points. There's nothing 'out of the box' in Swift to do this - the standard UIBezierPath can...
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Swift Filter Chaining Demo Application
Off the back of my last Swift experiment, an image tone curve editor, I thought I'd go one step further and create an iPad app that allows users to build a chain of image filters.My Filter Chaining...
View ArticleAnimating Inserts and Deletes on UICollectionView with Swift
When users added or deleted filters in the first iteration of my Filter Chaining application, the updated array of user defined filters was passed into the FiltersCollectionView instance where is...
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Panning, Pinch Zooming and Sub Component Dragging in UIScrollView with Swift
The user interface in my node based image compositing and editing application, Nodality, consists of a large scrollable and zoomable workspace where the user can create and move nodes. This blog post...
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Implementing the Presentation Model Pattern in Swift
For the last few years, almost all of the Flex projects I've worked on have used the Presentation Model (PM) pattern along with the Parsley application framework for dependency injection. Broadly...
View ArticleCreating a Node Based User Interface for iOS using Swift
I've long been a fan of node based user interfaces and I've been coding various implementations from my first Flex version back in 2008 up to my recent Adobe AIR based Nodality image compositing app...
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Swift: When removeFromSuperview() Is Not Enough
I've just added a little menu button with pop out UIAlertController to my Swift node based user interface demonstration. Along with options to change the selected node's type, it also allows the user...
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Callouts and Action Sheets in Swift with UIPopoverController and...
Callouts are small, transient popups that display information or user interface controls. As part of my Swift node based calculator experiment, I wanted to add two new features, a numeric dial and a...
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Sound Synthesis in Swift: A Core Audio Tone Generator
The other day, Morgan at Swift London mentioned it may be interesting to use my Swift node based user interface as the basis for an audio synthesiser. Always ready for a challenge, I've spent a little...
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Metal Kernel Functions / Compute Shaders in Swift
As part of a project to create a GPU based reaction diffusion simulation, I stated to look at using Metal in Swift this weekend.I've done similar work in the past targeting the Flash Player and using...
View ArticleReaction Diffusion Cellular Automata with Metal Compute Shaders
Following on from my recent experiment with Metal kernel functions, I've evolved the project to run a reaction diffusion simulation. This time, I've implemented the Fitzhugh-Nagumo model which was...
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Swift & Metal: 1,000 Reaction Diffusion Solver Iterations per Second
I've spend some time working on my iPad reaction diffusion simulation app written in Swift using Apple's Metal technology. As well as adding some more models: Gray-Scott and Belousov-Zhabotinsky, I've...
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Swift and Core Data: Saving Data with Thumbnail Previews
I've spent some time adding Core Data support to my Swift and Metal based reaction diffusion application. Core Data is a framework that allows me to persist different reaction diffusion configurations...
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London Swift Dev Community Talk: Whistle Stop Swift
Thanks to all that could make last night's talk: Whistle Stop Swift: Creating Apps Without Interface Builder. If you weren't able to come along, I created a demonstration Swift app for creating colours...
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Updating and Deleting with Swift and Core Data
I discussed creating and reading data with Core Data recently. This post looks at the rest of CRUD functions: updating and deleting. The examples in this post are taken from the demonstration project I...
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Improved Interaction Design for Deleting Items with Swift and Core Data
I looked at a simple implementation of Core Data's deleteObject() method recently, but for my Swift and Metal based reaction diffusion application, I want something a little more user friendly: if my...
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