Cascade docs

Cascade is an animation library for Unity UI Toolkit. It animates any VisualElement at runtime with one line of C#: fades, moves, scales, colors, sizes, springs, staggered lists and screen transitions.

It works with UXML/USS and UI Toolkit (UIElements) in Unity 6000.0 and later. It has no third-party dependencies and allocates nothing per frame. It doesn't support uGUI (Canvas).

using Cascade;

panel.Animate()
     .Fade(1f, 0.3f).From(0f).Ease(Ease.OutCubic)
     .MoveY(0f, 0.3f).From(24f).Ease(Ease.OutCubic);   // both run together

Lite and Pro

Cascade comes in two tiers. Lite is free and MIT licensed, and covers the tween engine. Pro is a superset: it includes everything in Lite and adds the parts that are hard to write yourself.

Feature	Lite (free)	Pro
Fade, move, scale, rotate, colors, width/height, top/left	yes	yes
Full easing set and `AnimationCurve` easing	yes	yes
Sequencing (`Then`), delays, loops, pause/resume/cancel	yes	yes
`await` any animation	yes	yes
Reduced-motion setting	yes	yes
Physics springs that keep momentum when interrupted	no	yes
Stagger across a list of elements	no	yes
Enter/exit and screen transitions (`Show`, `Hide`, `SwapTo`)	no	yes
Hover, press and focus animations	no	yes
Named states (variants)	no	yes
No-code UI Animator component with live preview in edit mode	no	yes
Drop shadow and glow elements	no	yes

Each page marks Pro-only code with Pro. Everything else works in both.

Get Cascade Lite (free) Get Cascade Pro

Start

Getting started: install, open the demo, write your first animation.
How to animate a UI Toolkit VisualElement: the built-in options and when a library helps.

Guides

Spring animation: presets, custom springs, interruptions that keep momentum.
Stagger a list: menus and lists that come in one item at a time.
Enter, exit and screen transitions: toasts, modals, tabs and screen swaps.
Recipes: hover and press, accordions, named states, async flows, loops, reduced motion, common mistakes.
No-code: UI Animator: add motion from the Inspector, with live preview.
Shadow, glow and filters: drop shadows and glows, animated blur and tint.
Coming from Framer Motion: every concept mapped.
Performance and lifecycle: what runs each frame, what it costs, and when animations stop.
AI assistants and the agent skill: let your coding assistant write Cascade code.

Reference

Easing curves: all 28 curves, drawn.
API reference: every public type and method, Lite and Pro marked.
FAQ.

The same guides ship inside the package under Documentation~, with an AI authoring guide for assistants that write Cascade code.