Learn VELATO with Real Code Examples

Input: Lottie JSON file (exported via Bodymovin from After Effects)

Parser: Rust code to deserialize JSON into a `Composition` data structure

Renderer: `velato::Renderer` translates the composition into a Vello `Scene`

Graphics backend: Vello draws the scene using GPU (or fallback) per frame

Optional integration: application’s render loop (desktop or wasm/web) calls Velato to draw animated frames

Parser reads Lottie JSON -> Rust data structure

Renderer converts data to Vello scene graph objects

GPU backend draws the scene each frame

Frame-based rendering allows precise control (frame 0.0 -> last frame)

Scene graph can be combined with other custom drawings

Separation of parsing (data) and rendering (graphics)

Scene graph abstraction (via Vello) for device‑agnostic drawing

Asset-based workflow (JSON animations, images if any)

Render loop abstraction - desktop or wasm/web

Optional layering: combine Lottie animations with custom Rust UI or graphics

Rust-based desktop application with animated onboarding screens

Game UI built in Rust where menu and HUD animations come from Lottie via Velato

Cross-platform (desktop + web) app using Velato for animated graphics and Vello for rendering

Interactive data visualization with animated vector charts/infographics

Prototyping animation-based UI components in Rust to reuse across projects

Safe, idiomatic Rust API

Reuse Lottie specification to enable designer‑to‑dev workflow

GPU-accelerated rendering for performance

Minimal dependencies and dual‑license (MIT/Apache)

Cross‑platform support including native and wasm/web

Reuse Composition and Renderer objects lifecycle rather than repeatedly re-creating them

Avoid very heavy or high‑frame‑rate animations if targeting lower‑end hardware or WebGPU-limited browsers

Batch animations or defer rendering when off-screen

Optimize Lottie files: reduce layers, avoid complex effects, simplify shapes

Profile and monitor GPU and memory usage under load

Take existing Lottie animations -> parse in Velato -> render in Rust app

If animations include unsupported features (text, images, effects) -> consider simplifying in After Effects or fallback to alternative assets

For web build: set up wasm/WebGPU pipeline and test across target browsers

Modularize renderer and animation logic to isolate dependency on Velato

Test across platforms (desktop, web, mobile) if applicable