geomutil 0.1.2

A Rust library providing geometric functions, including triangulation and alpha shape algorithms.
Documentation 
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use anyhow::Result;
use geomutil_triangulation::alpha_shape_2d;
use geomutil_util::{Point2D, points_bounding_box};
use plotters::prelude::*;

fn main() -> Result<()> {
    let points = [
        Point2D::new(0.0, 0.0),
        Point2D::new(1.0, 0.0),
        Point2D::new(1.0, 1.0),
        Point2D::new(0.0, 1.0),
        Point2D::new(3.0, 0.0),
        Point2D::new(4.0, 0.0),
        Point2D::new(4.0, 1.0),
        Point2D::new(3.0, 1.0),
    ];
    let shapes = alpha_shape_2d(&points, 1.25).unwrap();
    let root = BitMapBackend::new("triangles.png", (800, 600)).into_drawing_area();
    root.fill(&WHITE)?;

    let (low_boundary, up_boundary) = points_bounding_box(&points).unwrap();
    println!("{}", shapes.len());

    // 2. Define the chart context
    // We'll set up a coordinate system from (0,0) to (100, 100)
    let mut chart = ChartBuilder::on(&root).margin(10).build_cartesian_2d(
        low_boundary.x - 1.0..up_boundary.x + 1.0,
        low_boundary.y - 1.0..up_boundary.y + 1.0,
    )?; // Use f32 for the coordinate range
    chart.configure_mesh().draw()?;

    for triangle in shapes.iter().map(|s| s.triangles.clone()).flatten() {
        // Optionally, draw the outline of the triangle
        let line_series = LineSeries::new(
            vec![
                triangle.a.xy(),
                triangle.b.xy(),
                triangle.c.xy(),
                triangle.a.xy(),
            ], // Close the loop
            BLACK.stroke_width(2), // Black outline, 2 pixels thick
        );

        chart.draw_series(line_series)?;
    }

    // Annotate the drawing area to show the output file path
    root.present()?;
    Ok(())
}