diff --git a/src/bin/topola-egui/overlay.rs b/src/bin/topola-egui/overlay.rs
index 9a0cee3..0e0e2fe 100644
--- a/src/bin/topola-egui/overlay.rs
+++ b/src/bin/topola-egui/overlay.rs
@@ -17,6 +17,7 @@ use topola::{
     },
     graph::{GenericIndex, GetNodeIndex},
     layout::{
+        via::ViaWeight,
         zone::{MakePolyShape, Zone, ZoneWeight},
         CompoundWeight, Layout, NodeIndex,
     },
@@ -78,13 +79,22 @@ impl Overlay {
             }
             NodeIndex::Compound(compound) => {
                 match board.layout().drawing().compound_weight(compound) {
-                    CompoundWeight::Zone(zone) => Zone::new(
+                    /*CompoundWeight::Zone(zone) => Zone::new(
                         GenericIndex::<ZoneWeight>::new(compound.node_index()),
                         board.layout(),
                     )
                     .shape()
-                    .into(),
-                    CompoundWeight::Via(via) => unreachable!(),
+                    .into(),*/
+                    CompoundWeight::Zone(weight) => board
+                        .layout()
+                        .zone(GenericIndex::<ZoneWeight>::new(compound.node_index()))
+                        .shape()
+                        .into(),
+                    CompoundWeight::Via(weight) => board
+                        .layout()
+                        .via(GenericIndex::<ViaWeight>::new(compound.node_index()))
+                        .shape()
+                        .into(),
                 }
             }
         };
diff --git a/src/layout/layout.rs b/src/layout/layout.rs
index ad5f42d..462b39d 100644
--- a/src/layout/layout.rs
+++ b/src/layout/layout.rs
@@ -28,7 +28,7 @@ use crate::{
     },
     graph::{GenericIndex, GetNodeIndex},
     layout::{
-        via::ViaWeight,
+        via::{Via, ViaWeight},
         zone::{GetMaybeApex, MakePolyShape, Zone, ZoneWeight},
     },
     math::Circle,
@@ -256,33 +256,8 @@ impl<R: RulesTrait> Layout<R> {
     pub fn zone(&self, index: GenericIndex<ZoneWeight>) -> Zone<R> {
         Zone::new(index, self)
     }
+
+    pub fn via(&self, index: GenericIndex<ViaWeight>) -> Via<R> {
+        Via::new(index, self)
+    }
 }
-
-/*impl<R: RulesTrait> CompoundManagerTrait<ZoneWeight, GenericIndex<ZoneWeight>> for Layout<R> {
-    fn add_compound(&mut self, weight: ZoneWeight) -> GenericIndex<ZoneWeight> {
-        self.drawing.add_compound(weight)
-    }
-
-    fn remove_compound(&mut self, compound: GenericIndex<ZoneWeight>) {
-        self.drawing.remove_compound(compound);
-    }
-
-    fn add_to_compound<W>(
-        &mut self,
-        primitive: GenericIndex<W>,
-        compound: GenericIndex<ZoneWeight>,
-    ) {
-        self.drawing.add_to_compound(primitive, compound);
-    }
-
-    fn compound_weight(&self, compound: GenericIndex<ZoneWeight>) -> ZoneWeight {
-        self.drawing.compound_weight(compound)
-    }
-
-    fn compounds<W>(
-        &self,
-        node: GenericIndex<W>,
-    ) -> impl Iterator<Item = GenericIndex<ZoneWeight>> {
-        self.drawing.compounds(node)
-    }
-}*/
diff --git a/src/layout/via.rs b/src/layout/via.rs
index 3dcb7a8..93267f9 100644
--- a/src/layout/via.rs
+++ b/src/layout/via.rs
@@ -1,6 +1,9 @@
 use crate::{
-    drawing::{graph::GetMaybeNet, rules::RulesTrait},
-    geometry::compound::CompoundManagerTrait,
+    drawing::{graph::GetMaybeNet, primitive::MakePrimitiveShape, rules::RulesTrait},
+    geometry::{
+        compound::CompoundManagerTrait,
+        primitive::{DotShape, PrimitiveShape},
+    },
     graph::{GenericIndex, GetNodeIndex},
     layout::{CompoundWeight, Layout},
     math::Circle,
@@ -27,6 +30,18 @@ impl<'a, R: RulesTrait> GetMaybeNet for Via<'a, R> {
     }
 }
 
+impl<'a, R: RulesTrait> MakePrimitiveShape for Via<'a, R> {
+    fn shape(&self) -> PrimitiveShape {
+        if let CompoundWeight::Via(weight) =
+            self.layout.drawing().compound_weight(self.index.into())
+        {
+            weight.shape()
+        } else {
+            unreachable!();
+        }
+    }
+}
+
 #[derive(Debug, Clone, Copy)]
 pub struct ViaWeight {
     pub from_layer: u64,
@@ -35,14 +50,20 @@ pub struct ViaWeight {
     pub maybe_net: Option<usize>,
 }
 
+impl From<GenericIndex<ViaWeight>> for GenericIndex<CompoundWeight> {
+    fn from(via: GenericIndex<ViaWeight>) -> Self {
+        GenericIndex::<CompoundWeight>::new(via.node_index())
+    }
+}
+
 impl GetMaybeNet for ViaWeight {
     fn maybe_net(&self) -> Option<usize> {
         self.maybe_net
     }
 }
 
-impl From<GenericIndex<ViaWeight>> for GenericIndex<CompoundWeight> {
-    fn from(via: GenericIndex<ViaWeight>) -> Self {
-        GenericIndex::<CompoundWeight>::new(via.node_index())
+impl MakePrimitiveShape for ViaWeight {
+    fn shape(&self) -> PrimitiveShape {
+        DotShape { c: self.circle }.into()
     }
 }