fj-kernel 0.46.0

Early-stage, next-generation, code-first CAD application. Because the world needs another CAD program.
Documentation 
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use std::collections::{btree_set, BTreeSet};

use super::{
    BehindHandle, Cycle, Face, GlobalEdge, HalfEdge, Object, Surface, Vertex,
};

/// A graph of objects and their relationships
pub struct ObjectSet {
    inner: BTreeSet<Object<BehindHandle>>,
}

impl From<&Face> for ObjectSet {
    fn from(face: &Face) -> Self {
        let mut self_ = Self {
            inner: BTreeSet::new(),
        };

        face.insert_into_set(&mut self_);

        self_
    }
}

impl From<Face> for ObjectSet {
    fn from(face: Face) -> Self {
        Self::from(&face)
    }
}

impl<Faces> From<Faces> for ObjectSet
where
    Faces: IntoIterator<Item = Face>,
{
    fn from(faces: Faces) -> Self {
        let mut self_ = Self {
            inner: BTreeSet::new(),
        };

        for face in faces {
            face.insert_into_set(&mut self_);
        }

        self_
    }
}

impl IntoIterator for ObjectSet {
    type Item = Object<BehindHandle>;
    type IntoIter = btree_set::IntoIter<Self::Item>;

    fn into_iter(self) -> Self::IntoIter {
        self.inner.into_iter()
    }
}

trait InsertIntoSet {
    fn insert_into_set(&self, objects: &mut ObjectSet);
}

impl InsertIntoSet for Cycle {
    fn insert_into_set(&self, objects: &mut ObjectSet) {
        for half_edge in self.half_edges() {
            objects.inner.insert(half_edge.clone().into());
            half_edge.insert_into_set(objects);
        }
    }
}

impl InsertIntoSet for Face {
    fn insert_into_set(&self, objects: &mut ObjectSet) {
        objects.inner.insert(self.surface().clone().into());
        self.surface().insert_into_set(objects);

        objects.inner.insert(self.exterior().clone().into());
        self.exterior().insert_into_set(objects);

        for interior in self.interiors() {
            objects.inner.insert(interior.clone().into());
        }
        for interior in self.interiors() {
            interior.insert_into_set(objects);
        }
    }
}

impl InsertIntoSet for GlobalEdge {
    fn insert_into_set(&self, _: &mut ObjectSet) {}
}

impl InsertIntoSet for HalfEdge {
    fn insert_into_set(&self, objects: &mut ObjectSet) {
        objects.inner.insert(self.start_vertex().clone().into());
        self.start_vertex().insert_into_set(objects);

        objects.inner.insert(self.global_form().clone().into());
        self.global_form().insert_into_set(objects);
    }
}

impl InsertIntoSet for Surface {
    fn insert_into_set(&self, _: &mut ObjectSet) {}
}

impl InsertIntoSet for Vertex {
    fn insert_into_set(&self, _: &mut ObjectSet) {}
}