simplify-polyline

A nearly line-by-line Rust port of the Javascript simplify-js library.

Examples

```rust use simplify_polyline::*;

fn main() { let points = &[ Point { x: 0.0, y: 0.0 }, Point { x: 1.0, y: 1.0 }, Point { x: 2.0, y: 2.0 }, Point { x: 3.0, y: 3.0 }, Point { x: 4.0, y: 4.0 } ]; // alternatively, use the point! macro let points = &[ point!(f64, 0.0, 0.0), point!(f64, 1.0, 1.0), point!(f64, 2.0, 2.0), point!(f64, 3.0, 3.0), point!(f64, 4.0, 4.0) ]; // alternatively, use the points! macro let points = points![f64, (0.0, 0.0), (1.0, 1.0), (2.0, 2.0), (3.0, 3.0), (4.0, 4.0)];

// low-quality simplification (fast)
let new_points = simplify(points, 1.0, false);
// low-quality simplification (slower)
let new_points = simplify(points, 1.0, true);

} ```

Performance

Measurements taken with an AMD Ryzen 7 5800x, in Pop!_OS 22.04.

| Test Case | simplify-polyline | simplify-js | | --------------------------------------- | ----------------: | ----------: | | 1118 Points, Low Quality, Tolerance 1 | 16.584 μs | 52.907 μs | | 1118 Points, High Quality, Tolerance 1 | 30.910 μs | 85.653 μs | | 1118 Points, Low Quality, Tolerance 5 | 3.987 μs | 12.840 μs | | 1118 Points, High Quality, Tolerance 5 | 23.215 μs | 57.901 μs | | 73752 Points, Low Quality, Tolerance 1 | 82.251 μs | 273.075 μs | | 73752 Points, High Quality, Tolerance 1 | 1974.004 μs | 5376.344 μs | | 73752 Points, Low Quality, Tolerance 5 | 54.150 μs | 181.554 μs | | 73752 Points, High Quality, Tolerance 5 | 1460.742 μs | 3921.569 μs |

Contributing

Running tests:

shell $ cargo test --features tests

Running benchmarks:

shell $ cargo +nightly bench --features tests