primitive: Remove traverser objects

Tey were a bad idea. As such objects immutably borrow the layout, one
cannot use tem in a for loop that mutates it.

src/draw.rs

@@ -4,12 +4,11 @@ use geo::{EuclideanLength, Point};
 
 use crate::{
     graph::{
-        BendIndex, DotIndex, FixedDotIndex, FixedSegWeight, GetBand, GetEnds, GetNet, Index,
-        LooseBendIndex, LooseBendWeight, LooseDotIndex, LooseDotWeight, LooseSegWeight,
-        MakePrimitive,
+        BendIndex, DotIndex, FixedDotIndex, FixedSegWeight, GetBand, GetNet, Index, LooseBendIndex,
+        LooseBendWeight, LooseDotIndex, LooseDotWeight, LooseSegWeight, MakePrimitive,
     },
     guide::Guide,
-    layout::{Band, Layout},
+    layout::Layout,
     math::Circle,
     primitive::{GetOtherEnd, GetWeight},
     rules::{Conditions, Rules},
@@ -126,7 +125,7 @@ impl<'a> Draw<'a> {
         let head = self.extend_head(head, tangent.start_point())?;
         let _to_head = self.extend_head(to_head.into(), tangent.end_point())?;
 
-        let net = head.dot().primitive(self.layout).net();
+        let _net = head.dot().primitive(self.layout).net();
         self.layout.add_loose_seg(
             head.dot(),
             into.into(),
@@ -282,7 +281,7 @@ impl<'a> Draw<'a> {
     }
 
     #[debug_ensures(self.layout.node_count() == old(self.layout.node_count()))]
-    pub fn update_bow(&mut self, bend: LooseBendIndex) {
+    pub fn update_bow(&mut self, _bend: LooseBendIndex) {
         /*let cw = self.layout.primitive(bend).weight().cw;
         let ends = self.layout.primitive(bend).ends();
         let from_head = self.rear_head(ends.0);

src/graph.rs

@@ -1,5 +1,5 @@
 use enum_dispatch::enum_dispatch;
-use petgraph::stable_graph::{NodeIndex, StableDiGraph};
+use petgraph::stable_graph::NodeIndex;
 use std::{
     hash::{Hash, Hasher},
     marker::PhantomData,

src/layout.rs

@@ -9,7 +9,7 @@ use slab::Slab;
 
 use crate::graph::{
     BendWeight, DotIndex, DotWeight, FixedBendIndex, FixedDotIndex, FixedDotWeight, FixedSegIndex,
-    FixedSegWeight, GenericIndex, GetNetMut, GetNodeIndex, Index, Interior, Label, LooseBendIndex,
+    FixedSegWeight, GenericIndex, GetNodeIndex, Index, Interior, Label, LooseBendIndex,
     LooseBendWeight, LooseDotIndex, LooseDotWeight, LooseSegIndex, LooseSegWeight, MakePrimitive,
     Retag, SegWeight, Weight,
 };
@@ -297,7 +297,7 @@ impl Layout {
         Ok(bend)
     }
 
-    pub fn reposition_bend(&mut self, bend: LooseBendIndex, from: Point, to: Point) {
+    pub fn reposition_bend(&mut self, _bend: LooseBendIndex, _from: Point, _to: Point) {
         // TODO.
     }
 

src/main.rs

@@ -22,7 +22,6 @@ mod rules;
 mod segbend;
 mod shape;
 mod tracer;
-mod traverser;
 mod triangulation;
 
 use geo::point;
@@ -32,7 +31,7 @@ use mesh::{Mesh, MeshEdgeReference, VertexIndex};
 use petgraph::visit::{EdgeRef, IntoEdgeReferences};
 use primitive::MakeShape;
 use router::RouterObserver;
-use rstar::RTreeObject;
+
 use sdl2::event::Event;
 use sdl2::gfx::primitives::DrawRenderer;
 use sdl2::keyboard::Keycode;

src/mesh.rs

@@ -4,19 +4,13 @@ use enum_dispatch::enum_dispatch;
 use geo::Point;
 use itertools::Itertools;
 use petgraph::visit;
-use petgraph::{
-    stable_graph::{NodeIndex, StableDiGraph},
-    visit::EdgeRef,
-};
+use petgraph::{stable_graph::NodeIndex, visit::EdgeRef};
 use spade::{HasPosition, InsertionError, Point2};
 
 use crate::primitive::{GetCore, Primitive};
 use crate::triangulation::TriangulationEdgeReference;
 use crate::{
-    graph::{
-        FixedBendIndex, FixedDotIndex, GetNodeIndex, Index, Label, LooseBendIndex, MakePrimitive,
-        Weight,
-    },
+    graph::{FixedBendIndex, FixedDotIndex, GetNodeIndex, Index, LooseBendIndex, MakePrimitive},
     layout::Layout,
     primitive::MakeShape,
     shape::ShapeTrait,

src/primitive.rs

@@ -1,19 +1,18 @@
 use std::mem::swap;
 
 use enum_dispatch::enum_dispatch;
-use petgraph::stable_graph::{NodeIndex, StableDiGraph};
+use petgraph::stable_graph::NodeIndex;
 use petgraph::Direction::{Incoming, Outgoing};
 
 use crate::graph::{
-    DotIndex, FixedBendIndex, FixedBendWeight, FixedDotIndex, FixedDotWeight, FixedSegWeight,
-    GenericIndex, GetBand, GetEnds, GetNet, GetNodeIndex, GetOffset, GetWidth, Index, Interior,
-    Label, LooseBendIndex, LooseBendWeight, LooseDotIndex, LooseDotWeight, LooseSegIndex,
-    LooseSegWeight, MakePrimitive, Retag, Weight,
+    DotIndex, FixedBendWeight, FixedDotIndex, FixedDotWeight, FixedSegWeight, GenericIndex,
+    GetBand, GetEnds, GetNet, GetNodeIndex, GetOffset, GetWidth, Index, Interior, Label,
+    LooseBendIndex, LooseBendWeight, LooseDotIndex, LooseDotWeight, LooseSegIndex, LooseSegWeight,
+    MakePrimitive, Retag, Weight,
 };
 use crate::layout::Layout;
 use crate::math::{self, Circle};
 use crate::shape::{BendShape, DotShape, SegShape, Shape, ShapeTrait};
-use crate::traverser::OutwardRailTraverser;
 
 #[enum_dispatch]
 pub trait GetLayout {
@@ -51,12 +50,6 @@ pub trait GetOtherEnd<F: GetNodeIndex, T: GetNodeIndex + Into<F>>: GetEnds<F, T>
     }
 }
 
-pub trait TraverseOutward: GetFirstRail {
-    fn traverse_outward(&self) -> OutwardRailTraverser {
-        OutwardRailTraverser::new(self.first_rail(), self.layout())
-    }
-}
-
 pub trait GetFirstRail: GetLayout + GetNodeIndex {
     fn first_rail(&self) -> Option<LooseBendIndex> {
         self.layout()
@@ -292,7 +285,6 @@ impl<'a> MakeShape for FixedDot<'a> {
     }
 }
 
-impl<'a> TraverseOutward for FixedDot<'a> {}
 impl<'a> GetFirstRail for FixedDot<'a> {}
 
 pub type LooseDot<'a> = GenericPrimitive<'a, LooseDotWeight>;
@@ -474,7 +466,6 @@ impl<'a> GetEnds<FixedDotIndex, FixedDotIndex> for FixedBend<'a> {
 }
 
 impl<'a> GetOtherEnd<FixedDotIndex, FixedDotIndex> for FixedBend<'a> {}
-impl<'a> TraverseOutward for FixedBend<'a> {}
 impl<'a> GetFirstRail for FixedBend<'a> {}
 impl<'a> GetCore for FixedBend<'a> {} // TODO: Fixed bends don't have cores actually.
                                       //impl<'a> GetInnerOuter for FixedBend<'a> {}

src/segbend.rs

@@ -1,9 +1,5 @@
-use petgraph::stable_graph::StableDiGraph;
-
 use crate::{
-    graph::{
-        GetEnds, Index, Interior, Label, LooseBendIndex, LooseDotIndex, LooseSegIndex, Weight,
-    },
+    graph::{GetEnds, Index, Interior, LooseBendIndex, LooseDotIndex, LooseSegIndex},
     layout::Layout,
     primitive::{GetOtherEnd, LooseBend, LooseDot},
 };

src/shape.rs

@@ -115,7 +115,7 @@ impl ShapeTrait for SegShape {
         match other {
             Shape::Dot(..) => unreachable!(),
             Shape::Seg(other) => self.polygon().intersects(&other.polygon()),
-            Shape::Bend(other) => {
+            Shape::Bend(_other) => {
                 /*for segment in self.polygon().exterior().lines() {
                     let inner_circle = other.inner_circle();
                     let outer_circle = other.outer_circle();

src/traverser.rs

@@ -1,29 +0,0 @@
-use petgraph::stable_graph::StableDiGraph;
-
-use crate::{
-    graph::{Label, LooseBendIndex, Weight},
-    layout::Layout,
-    primitive::{GenericPrimitive, GetInnerOuter},
-};
-
-pub struct OutwardRailTraverser<'a> {
-    rail: Option<LooseBendIndex>,
-    layout: &'a Layout,
-}
-
-impl<'a> OutwardRailTraverser<'a> {
-    pub fn new(rail: Option<LooseBendIndex>, layout: &'a Layout) -> Self {
-        Self { rail, layout }
-    }
-}
-
-impl<'a> Iterator for OutwardRailTraverser<'a> {
-    type Item = LooseBendIndex;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.rail.map(|rail| {
-            self.rail = GenericPrimitive::new(rail, self.layout).outer();
-            rail
-        })
-    }
-}