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use fj_math::{Aabb, Vector};

use crate::{
    geometry::{Geometry, SurfacePath},
    objects::HalfEdge,
    storage::Handle,
};

impl super::BoundingVolume<2> for Handle<HalfEdge> {
    fn aabb(&self, geometry: &Geometry) -> Option<Aabb<2>> {
        match geometry.of_half_edge(self).path {
            SurfacePath::Circle(circle) => {
                // Just calculate the AABB of the whole circle. This is not the
                // most precise, but it should do for now.

                let center_to_min_max =
                    Vector::from([circle.radius(), circle.radius()]);

                Some(Aabb {
                    min: circle.center() - center_to_min_max,
                    max: circle.center() + center_to_min_max,
                })
            }
            SurfacePath::Line(_) => {
                let points = self.boundary().inner.map(|point_curve| {
                    geometry
                        .of_half_edge(self)
                        .path
                        .point_from_path_coords(point_curve)
                });

                Some(Aabb::<2>::from_points(points))
            }
        }
    }
}