Function vector 

pub fn vector(asset: VectorAsset) -> El

An app-supplied vector asset. By default Aetna preserves authored fills, strokes, and gradients through the painted vector path; call El::vector_mask when the asset should be treated as a one-colour coverage mask. Companion to crate::icon for content that doesn’t fit icon conventions: arbitrary-aspect bounding boxes, programmatic construction each frame. Pairs with crate::vector::PathBuilder for ergonomic path construction.

Sizing

The default size matches the asset’s view-box dimensions in logical pixels. Set El::width / El::height / El::fill_size to override. Painted vectors are tessellated into the resolved rect; mask vectors sample the backend MSDF atlas across that rect.

Caching

The asset’s VectorAsset::content_hash is the backend cache key. Apps that build the same shape twice (two commits sharing a merge connector geometry, two flowchart edges with the same arc) can share backend work; per-frame-unique geometry gets one cache entry per unique shape.

use aetna_core::prelude::*;
use aetna_core::tree::Color;

let curve = PathBuilder::new()
    .move_to(0.0, 0.0)
    .cubic_to(20.0, 0.0, 0.0, 60.0, 20.0, 60.0)
    .stroke_solid(Color::rgb(80, 200, 240), 2.0)
    .stroke_line_cap(VectorLineCap::Round)
    .build();
let asset = VectorAsset::from_paths([0.0, 0.0, 20.0, 60.0], vec![curve]);
let _ = vector(asset);