ToonCurvePython

ToonCurvePython is an open-source Python library that provides tools for constructing and manipulating animation curves with a toon-friendly aesthetic. It focuses on timing and transformation curves used in 2D animation and cartoon-like UI motion, enabling artists and developers to create exaggerated, non-linear motion profiles that interpolate between keyframes.

The library offers multiple curve types, including Bezier, B-spline, and Catmull-Rom, with specialized easing functions such as ease-in, ease-out, and elastic for cartoon feel. It supports arc-length parameterization, tangential control, and automatic tension adjustments to maintain consistent motion speeds across segments. It integrates with NumPy for data handling and can export curve data to JSON or CSV.

Design and use: ToonCurvePython is designed to be lightweight and extensible, with a clean API that allows chaining and composing curves. It is written in pure Python with optional C extensions for performance-critical paths. It emphasizes determinism and testability and is released under an open-source license.

Usage: Curves can be created from control points or keyframes, evaluated at a normalized time parameter to obtain positions, scales, or other attributes. It is intended to integrate with animation pipelines, game engines, or data visualization where toon-like motion is desired. The project maintains a small test suite and documentation.