diff --git a/topola-egui/src/viewport.rs b/topola-egui/src/viewport.rs
index fe0d2a1..877470f 100644
--- a/topola-egui/src/viewport.rs
+++ b/topola-egui/src/viewport.rs
@@ -29,8 +29,8 @@ impl Viewport {
                 .zoom_range(0.00001..=10000.0)
                 .show(ui, &mut scene_rect, |ui| {
                     if let Some(ref workspace) = workspace {
-                        let mut displayer = Display::new();
-                        displayer.update(ctx, ui, &self, workspace);
+                        let mut display = Display::new();
+                        display.update(ctx, ui, &self, workspace);
                     }
                 });
 
diff --git a/topola/src/layout.rs b/topola/src/layout.rs
index 6ba7cb5..110bc62 100644
--- a/topola/src/layout.rs
+++ b/topola/src/layout.rs
@@ -185,6 +185,41 @@ impl Layout {
         Rectangle::from_corners([min_x, min_y, layer], [max_x, max_y, layer])
     }
 
+    pub fn locate_joints_at_point(
+        &self,
+        layer: usize,
+        point: [i64; 2],
+    ) -> impl Iterator<Item = JointId> {
+        self.joints_rtree
+            .as_ref()
+            .locate_all_at_point(&[point[0], point[1], layer as i64])
+            .map(|geom_with_data| geom_with_data.data)
+    }
+
+    pub fn locate_segments_at_point(
+        &self,
+        layer: usize,
+        point: [i64; 2],
+    ) -> impl Iterator<Item = SegmentId> {
+        self.segments_rtree
+            .as_ref()
+            .locate_all_at_point(&[point[0], point[1], layer as i64])
+            .map(|geom_with_data| geom_with_data.data)
+    }
+
+    // TODO: vias.
+
+    pub fn locate_polygons_at_point(
+        &self,
+        layer: usize,
+        point: [i64; 2],
+    ) -> impl Iterator<Item = PolygonId> {
+        self.polygons_rtree
+            .as_ref()
+            .locate_all_at_point(&[point[0], point[1], layer as i64])
+            .map(|geom_with_data| geom_with_data.data)
+    }
+
     pub fn pin(&self, pin: PinId) -> &Pin {
         &self.pins[pin.id()]
     }