animate.py

Utility to create motion graphics with Python scripts. It uses Wand to generate images.

Usage

main.py [options] <script> [-o <output>]

• script is a Python script to use.
• -o <output> specifies output directory. It has to be a printf-style string with single number input for frame. By default it renders to ./render/%03d.png relative to working directory.

Options

• --props=<value> JSON encoded properties for graphics. If script declares a schema input will be validated against it.

Scripts

Scripts define how animation's state is changing and how it should be rendered. It's represented with a class inherited from Graphics.

Graphics subclasses can contain their data as any other class. Properties are stored in props attribute by default. State should be initialized in a constructor for the first frame. Class may define a update(delta) method which is then called every frame with the delta time that equals to 1 / FPS.

draw() function is required. It creates an image for the current frame after init() or update() is called.

Class must be passed as a first positional paramater of register().

By default sequence longs 1 frame and accepts any props. register() parameters allows to adjust it. To define an animation you need to specify both duration (in seconds) and fps. Schema is a Python Schema which validates the provided properties before execution.

Examples may be found in examples folder