README.md

geo-visibility

This crate contains algorithms to compute visibility polygon.

This code is a Rust port of the C++ lib visibility.

Example

The following example shows how to compute the visibility polygon of a point amongst line obstacles. The visibility method is provided by the Visibility trait which is implemented for most geo-types.

use geo::{Coordinate, Line};
use geo_visibility::Visibility;

let point = geo::Point::new(0.0, 0.0);

let lines = vec![
    Line::new(
        Coordinate { x: 1.0, y: 1.0 },
        Coordinate { x: 1.0, y: -1.0 },
    ),
    Line::new(
        Coordinate { x: -1.0, y: -1.0 },
        Coordinate { x: -1.0, y: -2.0 },
    ),
];

let visibility_polygon = point.visibility(lines.as_slice());