SVG icon animation tool for Android, iOS, and the web
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I gave a couple of live demos that illustrate how to use the tool at Droidcon SF (15:15 - 20:33):
Here are some example icon animations created by Shape Shifter:
Writing high-quality path morphing animations is a tedious and time-consuming task. In order to morph one shape into another, the SVG paths describing the two must be compatible with each other—that is, they need to have the same number and type of drawing commands. This is problematic because:
To address these problems, Shape Shifter provides the following features:
Cs by hand in order to make your paths compatible—Shape Shifter does this for you behind-the-scenes!
AnimatedVectorDrawableformat for use on the web and in Android applications. I'm open to adding support for other export formats as well, so feel free to file a feature request!
Pretty much all of the graphics in this app are powered by bezier curve approximations under-the-hood. I learned most of what I needed to know from this excellent primer on bezier curves (especially sections 9 and 33, which explain how to split and project points onto bezier curves without altering their original appearance). Most of the interesting SVG-related code is located under
Auto fix is powered by an adaptation of the Needleman-Wunsch algorithm, which is used in bioinformatics to align protein or nucleotide sequences. Instead of aligning DNA base-pairs, Shape Shifter aligns the individual SVG commands that make up each path instead. You can view the current implementation of the algorithm in the
Let me know if you encounter any issues with the app (attach SVG files and/or screenshots if you can). Before you do, take a look at the list of known issues here and leave a comment on the existing bugs you want to see fixed in a future release!
I am open to pretty much any feature request, so don't be afraid to ask! I'll likely work on the most popular feature requests first. I'm especially curious how I can make this web app more useful for iOS and web developers.
If you want to contribute, you can build and serve the web app locally as follows:
Clone the repository and in the root directory, run:
To build and serve the web app locally, run: