extern crate geos;
use geos::{version, Error, Geom, Geometry};

fn fun() -> Result<(), Error> {
    println!(
        "geos_c version: {}",
        version().expect("failed to get version")
    );
    let g1 = Geometry::new_from_wkt("POLYGON ((0 0, 0 5, 5 5, 5 0, 0 0))")?;
    println!("Geometry 1 created");
    println!("Area : {}", g1.area()?);
    println!("Is Geom1 simple : {:?}", g1.is_simple()?);
    let g2 = Geometry::new_from_wkt("POLYGON ((1 1, 1 3, 5 5, 5 0, 1 1))")?;
    println!("Geometry 2 created");
    println!("Geom1 intersects geom2 : {:?}\n", g1.intersects(&g2)?);
    let g3 = g1.buffer(100.0, 8)?;
    println!("Previous area = {} \nNew area = {}", g2.area()?, g3.area()?);
    let result = g1.within(&g2)?;
    println!("Geom1 within geom2 : {:?}\n", result);
    println!("Geom1 to wkt : {:?}", g1.to_wkt());
    let g5 = Geometry::new_from_wkt("LINESTRING(0.0 0.0, 7.0 7.0, 45.0 50.5, 100.0 100.0)")?;
    println!("Geom5 (linestring) : {:?}", g5.geometry_type());
    let g6 = g5.buffer(20.0, 10)?;
    println!("Geom6 (polygon) : {:?}", g6.geometry_type());
    let g4 = g1.get_centroid()?;
    println!("Centroid of g1 : {:?}", g4.to_wkt());
    println!(
        "Centroid of g1 with round precision of 1: {:?}",
        g4.to_wkt_precision(1)
    );
    println!("Geom4 contains centroid of geom1 : {:?}", g3.contains(&g4)?);
    println!("Geom4 is valid ? : {}", g3.is_valid());
    Ok(())
}

fn main() {
    fun().unwrap();
}