CATweaker 
Overview
A helper tool for creating beautiful CAMediaTimingFunction curve.
CATweaker comes with an Xcode plugin:
CATweakerSense for Xcode
Overview
CATweakerSense is an Xcode plugin that makes working with CAMediaTimingFunction more visual.
You might use ColorSense before. It let you pick up a color right from Xcode caret.
CATweakerSense is like ColorSense, but it lets you pick a CAMediaTimingFunction curve. When you put the caret on one of your CAMediaTimingFunction, it automatically shows the actual time curve as an overlay, and you can even adjust it on-the-fly with the curve adjuster.
The plugin also adds some items to the Edit menu to enable and to disable CATweakerSense temporarily. These menu items have no keyboard shortcuts by default, but you can set them via the system's keyboard preferences (Xcode's own preferences won't show them).
Installation
Install via Alcatraz.
Or
Simply build the Xcode project and restart Xcode. The plugin will automatically be installed in ~/Library/Application Support/Developer/Shared/Xcode/Plug-ins. To uninstall, just remove the plugin from there (and restart Xcode).
If you get a "Permission Denied" error while building, please see this issue.
This is tested on:
- OS X 10.9.2 with Xcode 6.2
- OS X 10.10.3 with Xcode 6.2
- OS X 10.11 with Xcode 7.0.1
Limitations
- It only works for constant point value, something like
[CAMediaTimingFunction functionWithControlPoints: abc/def : 0.1 : 0.15 : 0.9];won't work. - It only works for Objective-C code. Swift support is in todo list.
Next move
I am planing to bring keyFrame animation into this plugin. So one can create more complex animation like "spring", "decay", "along path" through the popover adjuster. If you have some great ideas, I am more than happy to hear from you. Swift language support.
Credits
This work is derived from the awesome ColorSense plugin of Ole Zorn(@olemoritz). Thanks Ole!
Author
Xu Lian
I'm a Mac and iOS developer, the founder of Beyondcow, follow me on Twitter or Github.
License
CATweaker & CATweakerSense is published under MIT License
Copyright (c) 2015 Xu Lian (@lianxu)
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.