autorouter: add option to disable presorting by pairwise detours

src/autorouter/autoroute.rs

@@ -10,7 +10,7 @@ use crate::{
 
 use super::{
     invoker::{GetGhosts, GetMaybeNavmesh, GetMaybeTrace, GetObstacles},
-    Autorouter, AutorouterError,
+    Autorouter, AutorouterError, AutorouterOptions,
 };
 
 pub enum AutorouteStatus {
@@ -32,6 +32,7 @@ impl TryInto<()> for AutorouteStatus {
 
 pub struct Autoroute {
     ratlines_iter: Box<dyn Iterator<Item = EdgeIndex<usize>>>,
+    options: AutorouterOptions,
     route: Option<Route>,
     curr_ratline: Option<EdgeIndex<usize>>,
 }
@@ -40,6 +41,7 @@ impl Autoroute {
     pub fn new(
         autorouter: &mut Autorouter<impl AccessMesadata>,
         ratlines: impl IntoIterator<Item = EdgeIndex<usize>> + 'static,
+        options: AutorouterOptions,
     ) -> Result<Self, AutorouterError> {
         let mut ratlines_iter = Box::new(ratlines.into_iter());
 
@@ -52,8 +54,9 @@ impl Autoroute {
 
         let this = Self {
             ratlines_iter,
-            curr_ratline: Some(curr_ratline),
+            options,
             route: Some(router.route(source, target, 100.0)?),
+            curr_ratline: Some(curr_ratline),
         };
 
         Ok(this)

src/autorouter/autorouter.rs

@@ -1,4 +1,5 @@
 use petgraph::graph::EdgeIndex;
+use serde::{Deserialize, Serialize};
 use spade::InsertionError;
 use thiserror::Error;
 
@@ -24,6 +25,23 @@ use super::{
     selection::{BandSelection, PinSelection},
 };
 
+#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
+pub struct AutorouterOptions {
+    pub presort_by_pairwise_detours: bool,
+    //pub wrap_around_bands: bool,
+    //pub squeeze_under_bands: bool,
+}
+
+impl AutorouterOptions {
+    pub fn new() -> Self {
+        Self {
+            presort_by_pairwise_detours: false,
+            //wrap_around_bands: true,
+            //squeeze_under_bands: true,
+        }
+    }
+}
+
 #[derive(Error, Debug, Clone)]
 pub enum AutorouterError {
     #[error("nothing to route")]
@@ -51,15 +69,20 @@ impl<M: AccessMesadata> Autorouter<M> {
         Ok(Self { board, ratsnest })
     }
 
-    pub fn autoroute(&mut self, selection: &PinSelection) -> Result<Autoroute, AutorouterError> {
+    pub fn autoroute(
-        self.autoroute_ratlines(self.selected_ratlines(selection))
+        &mut self,
+        selection: &PinSelection,
+        options: AutorouterOptions,
+    ) -> Result<Autoroute, AutorouterError> {
+        self.autoroute_ratlines(self.selected_ratlines(selection), options)
     }
 
     pub(super) fn autoroute_ratlines(
         &mut self,
         ratlines: Vec<EdgeIndex<usize>>,
+        options: AutorouterOptions,
     ) -> Result<Autoroute, AutorouterError> {
-        Autoroute::new(self, ratlines)
+        Autoroute::new(self, ratlines, options)
     }
 
     pub fn undo_autoroute(&mut self, selection: &PinSelection) -> Result<(), AutorouterError> {
@@ -106,6 +129,7 @@ impl<M: AccessMesadata> Autorouter<M> {
     pub fn compare_detours(
         &mut self,
         selection: &PinSelection,
+        options: AutorouterOptions,
     ) -> Result<CompareDetours, AutorouterError> {
         let ratlines = self.selected_ratlines(selection);
         let ratline1 = *ratlines
@@ -114,15 +138,16 @@ impl<M: AccessMesadata> Autorouter<M> {
         let ratline2 = *ratlines
             .get(1)
             .ok_or(AutorouterError::NeedExactlyTwoRatlines)?;
-        self.compare_detours_ratlines(ratline1, ratline2)
+        self.compare_detours_ratlines(ratline1, ratline2, options)
     }
 
     pub(super) fn compare_detours_ratlines(
         &mut self,
         ratline1: EdgeIndex<usize>,
         ratline2: EdgeIndex<usize>,
+        options: AutorouterOptions,
     ) -> Result<CompareDetours, AutorouterError> {
-        CompareDetours::new(self, ratline1, ratline2)
+        CompareDetours::new(self, ratline1, ratline2, options)
     }
 
     pub fn measure_length(

src/autorouter/compare_detours.rs

@@ -12,7 +12,7 @@ use crate::{
 use super::{
     autoroute::{Autoroute, AutorouteStatus},
     invoker::{GetGhosts, GetMaybeNavmesh, GetMaybeTrace, GetObstacles},
-    Autorouter, AutorouterError,
+    Autorouter, AutorouterError, AutorouterOptions,
 };
 
 pub enum CompareDetoursStatus {
@@ -47,10 +47,11 @@ impl CompareDetours {
         autorouter: &mut Autorouter<impl AccessMesadata>,
         ratline1: EdgeIndex<usize>,
         ratline2: EdgeIndex<usize>,
+        options: AutorouterOptions,
     ) -> Result<Self, AutorouterError> {
         Ok(Self {
-            autoroute: autorouter.autoroute_ratlines(vec![ratline1, ratline2])?,
+            autoroute: autorouter.autoroute_ratlines(vec![ratline1, ratline2], options)?,
-            next_autoroute: Some(autorouter.autoroute_ratlines(vec![ratline2, ratline1])?),
+            next_autoroute: Some(autorouter.autoroute_ratlines(vec![ratline2, ratline1], options)?),
             ratline1,
             ratline2,
             total_length1: 0.0,

src/autorouter/invoker.rs

@@ -22,7 +22,7 @@ use super::{
     place_via::PlaceVia,
     remove_bands::RemoveBands,
     selection::{BandSelection, PinSelection},
-    Autorouter, AutorouterError,
+    Autorouter, AutorouterError, AutorouterOptions,
 };
 
 #[enum_dispatch]
@@ -71,10 +71,10 @@ impl TryInto<()> for InvokerStatus {
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum Command {
-    Autoroute(PinSelection),
+    Autoroute(PinSelection, AutorouterOptions),
     PlaceVia(ViaWeight),
     RemoveBands(BandSelection),
-    CompareDetours(PinSelection),
+    CompareDetours(PinSelection, AutorouterOptions),
     MeasureLength(BandSelection),
 }
 
@@ -254,19 +254,25 @@ impl<M: AccessMesadata> Invoker<M> {
     #[debug_requires(self.ongoing_command.is_none())]
     fn dispatch_command(&mut self, command: &Command) -> Result<Execute, InvokerError> {
         match command {
-            Command::Autoroute(selection) => {
+            Command::Autoroute(selection, options) => {
                 let mut ratlines = self.autorouter.selected_ratlines(selection);
+
+                if options.presort_by_pairwise_detours {
                     ratlines.sort_unstable_by(|a, b| {
-                    let mut compare_detours =
+                        let mut compare_detours = self
-                        self.autorouter.compare_detours_ratlines(*a, *b).unwrap();
+                            .autorouter
+                            .compare_detours_ratlines(*a, *b, *options)
+                            .unwrap();
                         if let Ok((al, bl)) = compare_detours.finish(&mut self.autorouter) {
                             PartialOrd::partial_cmp(&al, &bl).unwrap()
                         } else {
                             Ordering::Equal
                         }
                     });
+                }
+
                 Ok::<Execute, InvokerError>(Execute::Autoroute(
-                    self.autorouter.autoroute_ratlines(ratlines)?,
+                    self.autorouter.autoroute_ratlines(ratlines, *options)?,
                 ))
             }
             Command::PlaceVia(weight) => {
@@ -275,8 +281,8 @@ impl<M: AccessMesadata> Invoker<M> {
             Command::RemoveBands(selection) => Ok::<Execute, InvokerError>(Execute::RemoveBands(
                 self.autorouter.remove_bands(selection)?,
             )),
-            Command::CompareDetours(selection) => Ok::<Execute, InvokerError>(
+            Command::CompareDetours(selection, options) => Ok::<Execute, InvokerError>(
-                Execute::CompareDetours(self.autorouter.compare_detours(selection)?),
+                Execute::CompareDetours(self.autorouter.compare_detours(selection, *options)?),
             ),
             Command::MeasureLength(selection) => Ok::<Execute, InvokerError>(
                 Execute::MeasureLength(self.autorouter.measure_length(selection)?),
@@ -289,8 +295,8 @@ impl<M: AccessMesadata> Invoker<M> {
         let command = self.history.last_done()?;
 
         match command {
-            Command::Autoroute(ref selection) => {
+            Command::Autoroute(ref selection, ..) => {
-                self.autorouter.undo_autoroute(selection);
+                self.autorouter.undo_autoroute(selection)?;
             }
             Command::PlaceVia(weight) => {
                 self.autorouter.undo_place_via(*weight);

src/bin/topola-egui/top.rs

@@ -5,8 +5,9 @@ use std::{
 };
 
 use topola::{
-    autorouter::invoker::{
+    autorouter::{
-        Command, Execute, ExecuteWithStatus, Invoker, InvokerError, InvokerStatus,
+        invoker::{Command, Execute, ExecuteWithStatus, Invoker, InvokerError, InvokerStatus},
+        AutorouterOptions,
     },
     specctra::{design::SpecctraDesign, mesadata::SpecctraMesadata},
 };
@@ -248,9 +249,11 @@ impl Top {
                         ) {
                             let selection = overlay.selection().clone();
                             overlay.clear_selection();
-                            maybe_execute
+                            maybe_execute.insert(ExecuteWithStatus::new(invoker.execute_stepper(
-                                .insert(ExecuteWithStatus::new(invoker.execute_stepper(
+                                Command::Autoroute(
-                                    Command::Autoroute(selection.pin_selection),
+                                    selection.pin_selection,
+                                    AutorouterOptions::new(),
+                                ),
                             )?));
                         }
                     }
@@ -304,7 +307,10 @@ impl Top {
                             let selection = overlay.selection().clone();
                             overlay.clear_selection();
                             maybe_execute.insert(ExecuteWithStatus::new(invoker.execute_stepper(
-                                Command::CompareDetours(selection.pin_selection),
+                                Command::CompareDetours(
+                                    selection.pin_selection,
+                                    AutorouterOptions::new(),
+                                ),
                             )?));
                         }
                     }