Writing the Shaker add-on

The Shaker add-on creates a shaky effect on the active object by adding noise modifiers to its animation curves.

There are cases when we want to add some shaking to a motion. For instance, directors often use a camera shake to suggest an object being bumped or hit. Another use case is the bumpy motion of a vehicle, or hairs and feathers in a windy environment. The Python script we are going to write will contain an operator and a menu function for quick execution.

Setting up the environment

We first create a Python script for our add-on:

1. Create the PythonScriptingBlender/ch8/addons folder. We can use the file manager or the File tab of our code editor, such as VS Code.
2. Create a new file in that folder and name it object_shaker.py. We can use the file manager or the New File button of our code editor.
3. Open the file in your editor of choice.
4. Set the Scripts path to PythonScriptingBlender/ch8 in the Blender File Paths preferences...