egui,autorouter: add action and command to measure length of bands

locales/en-US/main.ftl

@@ -11,6 +11,7 @@ action-autoroute = Autoroute
 action-place-via = Place Via
 action-remove-bands = Remove Bands
 action-compare-detours = Compare Detours
+action-measure-length = Measure Length
 
 action-undo = Undo
 action-redo = Redo

src/autorouter/autorouter.rs

@@ -13,6 +13,7 @@ use crate::{
 use super::{
     autoroute::Autoroute,
     compare_detours::CompareDetours,
+    measure_length::MeasureLength,
     place_via::PlaceVia,
     ratsnest::{Ratsnest, RatvertexIndex},
     remove_bands::RemoveBands,
@@ -110,6 +111,13 @@ impl<M: AccessMesadata> Autorouter<M> {
         CompareDetours::new(self, ratline1, ratline2)
     }
 
+    pub fn measure_length(
+        &mut self,
+        selection: &BandSelection,
+    ) -> Result<MeasureLength, AutorouterError> {
+        MeasureLength::new(selection)
+    }
+
     pub fn ratline_endpoints(
         &mut self,
         ratline: EdgeIndex<usize>,

src/autorouter/invoker.rs

@@ -16,6 +16,7 @@ use super::{
     autoroute::{Autoroute, AutorouteStatus},
     compare_detours::{CompareDetours, CompareDetoursStatus},
     history::{History, HistoryError},
+    measure_length::MeasureLength,
     place_via::PlaceVia,
     remove_bands::RemoveBands,
     selection::{BandSelection, PinSelection},
@@ -72,6 +73,7 @@ pub enum Command {
     PlaceVia(ViaWeight),
     RemoveBands(BandSelection),
     CompareDetours(PinSelection),
+    MeasureLength(BandSelection),
 }
 
 #[enum_dispatch(GetMaybeNavmesh, GetMaybeTrace, GetGhosts, GetObstacles)]
@@ -80,6 +82,7 @@ pub enum Execute {
     PlaceVia(PlaceVia),
     RemoveBands(RemoveBands),
     CompareDetours(CompareDetours),
+    MeasureLength(MeasureLength),
 }
 
 impl Execute {
@@ -107,7 +110,8 @@ impl Execute {
                     "finished removing bands",
                 )))
             }
-            Execute::CompareDetours(compare) => match compare.step(&mut invoker.autorouter)? {
+            Execute::CompareDetours(compare_detours) => {
+                match compare_detours.step(&mut invoker.autorouter)? {
                     CompareDetoursStatus::Running => Ok(InvokerStatus::Running),
                     CompareDetoursStatus::Finished(total_length1, total_length2) => {
                         Ok(InvokerStatus::Finished(String::from(format!(
@@ -115,7 +119,15 @@ impl Execute {
                             total_length1, total_length2
                         ))))
                     }
-            },
+                }
+            }
+            Execute::MeasureLength(measure_length) => {
+                let length = measure_length.doit(&mut invoker.autorouter)?;
+                Ok(InvokerStatus::Finished(format!(
+                    "Total length of selected bands: {}",
+                    length
+                )))
+            }
         }
     }
 }
@@ -261,6 +273,9 @@ impl<M: AccessMesadata> Invoker<M> {
             Command::CompareDetours(selection) => Ok::<Execute, InvokerError>(
                 Execute::CompareDetours(self.autorouter.compare_detours(selection)?),
             ),
+            Command::MeasureLength(selection) => Ok::<Execute, InvokerError>(
+                Execute::MeasureLength(self.autorouter.measure_length(selection)?),
+            ),
         }
     }
 
@@ -273,6 +288,7 @@ impl<M: AccessMesadata> Invoker<M> {
             Command::PlaceVia(weight) => self.autorouter.undo_place_via(*weight),
             Command::RemoveBands(ref selection) => self.autorouter.undo_remove_bands(selection),
             Command::CompareDetours(..) => (),
+            Command::MeasureLength(..) => (),
         }
 
         Ok::<(), InvokerError>(self.history.undo()?)

src/autorouter/measure_length.rs

@@ -0,0 +1,76 @@
+use crate::{
+    board::mesadata::AccessMesadata,
+    drawing::{band::BandUid, graph::PrimitiveIndex},
+    geometry::{primitive::PrimitiveShape, shape::MeasureLength as MeasureLengthTrait},
+    graph::MakeRef,
+    router::{navmesh::Navmesh, trace::Trace},
+};
+
+use super::{
+    invoker::{GetGhosts, GetMaybeNavmesh, GetMaybeTrace, GetObstacles},
+    selection::BandSelection,
+    Autorouter, AutorouterError,
+};
+
+pub struct MeasureLength {
+    selection: BandSelection,
+    maybe_length: Option<f64>,
+}
+
+impl MeasureLength {
+    pub fn new(selection: &BandSelection) -> Result<Self, AutorouterError> {
+        Ok(Self {
+            selection: selection.clone(),
+            maybe_length: None,
+        })
+    }
+
+    pub fn doit(
+        &mut self,
+        autorouter: &mut Autorouter<impl AccessMesadata>,
+    ) -> Result<f64, AutorouterError> {
+        let length = if let Some(length) = self.maybe_length {
+            length
+        } else {
+            let mut length = 0.0;
+
+            for selector in self.selection.selectors() {
+                let band = autorouter
+                    .board
+                    .bandname_band(selector.band.clone())
+                    .unwrap()
+                    .0;
+                length += band.ref_(autorouter.board.layout().drawing()).length();
+            }
+
+            self.maybe_length = Some(length);
+            length
+        };
+
+        Ok(length)
+    }
+}
+
+impl GetMaybeNavmesh for MeasureLength {
+    fn maybe_navmesh(&self) -> Option<&Navmesh> {
+        None
+    }
+}
+
+impl GetMaybeTrace for MeasureLength {
+    fn maybe_trace(&self) -> Option<&Trace> {
+        None
+    }
+}
+
+impl GetGhosts for MeasureLength {
+    fn ghosts(&self) -> &[PrimitiveShape] {
+        &[]
+    }
+}
+
+impl GetObstacles for MeasureLength {
+    fn obstacles(&self) -> &[PrimitiveIndex] {
+        &[]
+    }
+}

src/autorouter/mod.rs

@@ -3,6 +3,7 @@ mod autorouter;
 pub mod compare_detours;
 pub mod history;
 pub mod invoker;
+pub mod measure_length;
 pub mod place_via;
 pub mod ratsnest;
 pub mod remove_bands;

src/bin/topola-egui/top.rs

@@ -94,6 +94,11 @@ impl Top {
             egui::Modifiers::NONE,
             egui::Key::Minus,
         ));
+        let mut measure_length = Trigger::new(Action::new(
+            tr.text("action-measure-length"),
+            egui::Modifiers::NONE,
+            egui::Key::Plus,
+        ));
         let mut undo = Trigger::new(Action::new(
             tr.text("action-undo"),
             egui::Modifiers::CTRL,
@@ -132,6 +137,7 @@ impl Top {
                     place_via.toggle_widget(ctx, ui, &mut self.is_placing_via);
 
                     remove_bands.button(ctx, ui);
+                    measure_length.button(ctx, ui);
 
                     ui.separator();
 
@@ -151,6 +157,7 @@ impl Top {
 
                         ui.separator();
                         compare_detours.button(ctx, ui);
+                        measure_length.button(ctx, ui);
                     });
 
                     ui.separator();
@@ -263,6 +270,21 @@ impl Top {
                             )?));
                         }
                     }
+                } else if measure_length.consume_key_triggered(ctx, ui) {
+                    if maybe_execute.as_mut().map_or(true, |execute| {
+                        matches!(execute.maybe_status(), Some(InvokerStatus::Finished(..)))
+                    }) {
+                        if let (Some(invoker), Some(ref mut overlay)) = (
+                            arc_mutex_maybe_invoker.lock().unwrap().as_mut(),
+                            maybe_overlay,
+                        ) {
+                            let selection = overlay.selection().clone();
+                            overlay.clear_selection();
+                            maybe_execute.insert(ExecuteWithStatus::new(invoker.execute_stepper(
+                                Command::MeasureLength(selection.band_selection),
+                            )?));
+                        }
+                    }
                 } else if undo.consume_key_triggered(ctx, ui) {
                     if let Some(invoker) = arc_mutex_maybe_invoker.lock().unwrap().as_mut() {
                         invoker.undo();