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refactor(drawing/gear): Remove `GetPrevNextInChain` trait 

It wasn't helpful after all.
This commit is contained in:
Mikolaj Wielgus 2025-09-02 22:32:49 +02:00
parent 9f7e10bc03
commit c2cd565a9b
2 changed files with 0 additions and 54 deletions
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23
src/drawing/gear.rs
View File

@ -83,29 +83,6 @@ pub trait WalkOutwards {
fn outwards(&self) -> DrawingOutwardWalker;
}
//#[enum_dispatch]
pub trait GetPrevNextInChain {
fn next_in_chain(&self, maybe_prev: Option<GearIndex>) -> Option<GearIndex>;
fn prev_in_chain(&self, maybe_next: Option<GearIndex>) -> Option<GearIndex> {
// Just as in the `GetPrevNextLoose` trait.
let maybe_prev = maybe_next.or_else(|| self.next_in_chain(None));
self.next_in_chain(maybe_prev)
}
}
// Because types have trait bounds, we cannot use enum_dispatch and instead we
// implement `GetPrevNextInChain` explicitly.
impl<'a, CW: Clone, Cel: Copy, R: AccessRules> GetPrevNextInChain for GearRef<'a, CW, Cel, R> {
fn next_in_chain(&self, maybe_prev: Option<GearIndex>) -> Option<GearIndex> {
match self {
GearRef::FixedDot(dot) => dot.next_in_chain(maybe_prev),
GearRef::FixedBend(bend) => bend.next_in_chain(maybe_prev),
GearRef::LooseBend(bend) => bend.next_in_chain(maybe_prev),
}
}
}
/// I found it easier to just duplicate `OutwardWalker<BI>` for `Drawing<...>`.
pub struct DrawingOutwardWalker {
frontier: VecDeque<LooseBendIndex>,

31
src/drawing/primitive.rs
View File

@ -9,7 +9,6 @@ use crate::{
drawing::{
bend::{BendIndex, FixedBendWeight, LooseBendIndex, LooseBendWeight},
dot::{DotIndex, DotWeight, FixedDotIndex, FixedDotWeight, LooseDotIndex, LooseDotWeight},
gear::{GearIndex, GetPrevNextInChain},
graph::{GetMaybeNet, PrimitiveIndex, PrimitiveWeight},
rules::{AccessRules, Conditions, GetConditions},
seg::{FixedSegWeight, LoneLooseSegWeight, SegIndex, SeqLooseSegIndex, SeqLooseSegWeight},
@ -292,24 +291,6 @@ impl<CW, Cel, R> GetOuterGears for FixedDot<'_, CW, Cel, R> {
}
}
impl<CW: Clone, Cel: Copy, R: AccessRules> GetPrevNextInChain for FixedDot<'_, CW, Cel, R> {
fn next_in_chain(&self, maybe_prev: Option<GearIndex>) -> Option<GearIndex> {
self.drawing
.overlapees(self.index.into())
.find_map(|infringement| {
let PrimitiveIndex::FixedDot(intersectee) = infringement.1 else {
return None;
};
if let Some(prev) = maybe_prev {
(infringement.1 == prev.into()).then_some(intersectee.into())
} else {
Some(intersectee.into())
}
})
}
}
impl<CW, Cel, R> WalkOutwards for FixedDot<'_, CW, Cel, R> {
fn outwards(&self) -> DrawingOutwardWalker {
DrawingOutwardWalker::new(self.lowest_gears().into_iter())
@ -476,12 +457,6 @@ impl<CW, Cel, R> GetOuterGears for FixedBend<'_, CW, Cel, R> {
}
}
impl<CW, Cel, R> GetPrevNextInChain for FixedBend<'_, CW, Cel, R> {
fn next_in_chain(&self, _maybe_prev: Option<GearIndex>) -> Option<GearIndex> {
None
}
}
impl<CW, Cel, R> WalkOutwards for FixedBend<'_, CW, Cel, R> {
fn outwards(&self) -> DrawingOutwardWalker {
DrawingOutwardWalker::new(self.lowest_gears().into_iter())
@ -535,12 +510,6 @@ impl<CW, Cel, R> GetOuterGears for LooseBend<'_, CW, Cel, R> {
}
}
impl<CW, Cel, R> GetPrevNextInChain for LooseBend<'_, CW, Cel, R> {
fn next_in_chain(&self, _maybe_prev: Option<GearIndex>) -> Option<GearIndex> {
None
}
}
impl<CW, Cel, R> WalkOutwards for LooseBend<'_, CW, Cel, R> {
fn outwards(&self) -> DrawingOutwardWalker {
DrawingOutwardWalker::new(self.outers())