A little more than a year ago, I released my first iPhone application, Spiral by Digital Generalists. After several updates and many happy customers, I’ve decided to release the drawing engine for Spiral as an open source framework through my company, Digital Generalists, LLC..
What Is SpiralKit
SpiralKit is a Quartz 2D-based drawing framework for iOS written in Objective-C. The framework enables ‘drawing’ on a UIView in an iOS application and ships with pen, highlighter, and eraser drawing effects.
The framework is built specifically to enable easily adding new effects, color spaces, and drawing algorithms in a modular fashion. If you want to provide a unique drawing effect, support of the CMYK color space, or a custom drawing algorithm, you can add such features to SpiralKit without having to modify the fundamental components of the framework.
Where to Find It
The project is hosted on GitHub at https://github.com/digital-generalists/spiralkit.
See the release post on the Digital Generalists site and the framework documentation for all information about using SpiralKit in your application.
After releasing several mobile applications for the companies I’ve worked for over the last couple of years, I finally released an iPhone application of my own to the App Store, Spiral by Digital Generalists. See the launch post on my company’s website for all of the details about the app.
Spiral is the perfect application for lovers of pocket-sized paper notepads who want to take quick notes, draw, sketch, doodle, and more! All these things can be done by simply “drawing” on the application with your finger or a stylus.
Spiral uses a world-class drawing engine that provides smooth lines and a fluid writing experience. We worked very hard to make using Spiral feel like writing on an actual notepad, and we’re proud of what we built.
Designed specifically for the smaller size of the iPhone, Spiral gives the power and features of notepad applications available only on the iPad in a way that works well on a smaller screen.
Give Spiral a try today!