neco-edge-routing

日本語

necosystems series 2D edge routing primitives for node graphs

Overview

neco-edge-routing computes edge paths from two endpoints and their tangents without taking a dependency on any renderer, UI framework, or node graph data model.

The output stays in a neutral PathData form that SVG, canvas, or other emitters can consume later.

Features

When spline or nurbs is not enabled, the corresponding RouteStyle variant still exists, and route() returns RoutingError::FeatureDisabled instead of falling back silently.

Usage

use neco_edge_routing::{route, RouteRequest, RouteStyle};

let path = route(&RouteRequest {
    from: (0.0, 0.0),
    to: (120.0, 40.0),
    from_tangent: (1.0, 0.0),
    to_tangent: (-1.0, 0.0),
    style: RouteStyle::Linear,
})?;

assert_eq!(path.points, vec![(0.0, 0.0), (120.0, 40.0)]);
# Ok::<(), neco_edge_routing::RoutingError>(())

use neco_edge_routing::{route, RouteRequest, RouteStyle};

let path = route(&RouteRequest {
    from: (0.0, 0.0),
    to: (120.0, 40.0),
    from_tangent: (1.0, 0.0),
    to_tangent: (-1.0, 0.0),
    style: RouteStyle::Bezier { curvature: 0.25 },
})?;

assert_eq!(path.points.len(), 4);
# Ok::<(), neco_edge_routing::RoutingError>(())

use neco_edge_routing::{route, RouteRequest, RouteStyle};

let path = route(&RouteRequest {
    from: (0.0, 0.0),
    to: (120.0, 40.0),
    from_tangent: (1.0, 0.0),
    to_tangent: (-1.0, 0.0),
    style: RouteStyle::Orthogonal { corner_radius: 8.0 },
})?;

assert!(!path.points.is_empty());
# Ok::<(), neco_edge_routing::RoutingError>(())

Spline and NURBS routes are available through the corresponding Cargo features.

API

License

MIT