Using BooleanOp with geo

[afternoon2]

Hello!

I'd like to ask a beginner question which I haven't found answer for (or I was looking for it badly 😅)

I use geo (not geo_types) in my project, and while trying to perform an intersection operation like this:

use geo::Polygon;
use geo_booleanop::boolean::BooleanOp;

pub fn clip(polygon: &Polygon<f64>, fill_shapes: &[Polygon<f64>]) {
    let value = fill_shapes.iter()
        .map(|shape| polygon.intersection(shape));
}

I get an error from the VSCode:

no method named `intersection` found for reference `&geo::Polygon<f64>` in the current scope

I see that, contrary to the README of this project, geo_booleanop uses geo_types instead of geo. Is it possible to use this library with geo?

Thank you for help!

[afternoon2]

Ok, after a while, I switched to using geo_types version 0.7.4, but I keep getting the same error:

no method named `intersection` found for reference `&geo::Polygon<f64>` in the current scope

[afternoon2]

So, in the end I followed the solution described here

use geo_booleanop::boolean::BooleanOp;
use old_geo_types::Polygon;

pub fn clip(
    polygon: &old_geo_types::Polygon<f64>,
    fill_shapes: &[old_geo_types::Polygon<f64>],
) -> Vec<old_geo_types::Polygon<f64>> {
    fill_shapes
        .iter()
        .flat_map(|shape| {
            polygon
                .intersection(shape)
                .iter()
                .cloned()
                .collect::<Vec<Polygon<f64>>>()
        })
        .collect::<Vec<Polygon<f64>>>()
}

Cargo.toml:

geo = "0.20.0"
geo-booleanop = "0.3.2"
geo-types = "0.7.4"
old-geo-types = { package = "geo-types", version = "0.6.2" }

[michaelkirk]

The latest release of geo-booleanop for crates.io is 0.3.2, but there is not corresponding tag for that release on GH, so it's hard to know which commit that corresponds to. The latest version of rust-geo-booleanop on GH is compatible with geo-types 0.7.4.

I'm curious if your problem would equally go away (without the workaround) if you used geo-booleanop from github:

geo-booleanop = { git = "https://github.com/21re/rust-geo-booleanop" }

BTW - this kind of opaque error due to redundant incompatible versions is a common pain point in rust. Maybe you're already aware, but a tool I find useful is:

cargo tree -d

Which will show you any crates being included more than once. Seeing multiple versions of geo-types is sometimes OK if they live in non-overlapping code, but usually it's undesirable even then.

[afternoon2]

Oh, I didn't know that! I'll try to use your advice, thank you!

[afternoon2]

Yaay, it worked! Thank you very much!