frus-core

The vocabulary every other frus crate speaks: geometry, colour, paths, text styles, animation and the Scene a frame is drawn from.

Layer: Foundations, the bottom one. It has a single small dependency (bytemuck) and knows nothing about windows, GPUs or platforms. See ARCHITECTURE.md.

What you reach for

• Scene and Primitive: the flat display list. Widgets push primitives into it and the renderer draws it, and nothing else crosses from one to the other.
• Color, Rect, Size, Point, Insets: the value types every layer passes around.
• AnimationController, Tween, Curve, SpringSimulation: time and physics, shared by every animated widget.

Example

use frus_core::{Color, Rect, Scene};

let mut scene = Scene::new();
scene.fill_rect(Rect::new(0.0, 0.0, 120.0, 40.0), Color::hex("#3B82F6"));
assert_eq!(scene.len(), 1);

Part of frus

Applications rarely name this crate: the frus facade and frus-widgets re-export the types above. See the workspace README. Licensed under MIT or Apache-2.0.