From 332394ba43440eb9021b0304815567b0a9bf4194 Mon Sep 17 00:00:00 2001
From: Hanno Braun <hanno@braun-odw.eu>
Date: Wed, 5 Oct 2022 13:44:28 +0200
Subject: [PATCH] Don't duplicate surface when transforming `Face`

---
 .../src/algorithms/transform/face.rs          | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/crates/fj-kernel/src/algorithms/transform/face.rs b/crates/fj-kernel/src/algorithms/transform/face.rs
index 608dbd9b9..79c18d542 100644
--- a/crates/fj-kernel/src/algorithms/transform/face.rs
+++ b/crates/fj-kernel/src/algorithms/transform/face.rs
@@ -2,6 +2,7 @@ use fj_math::Transform;
 
 use crate::{
     objects::{Face, Faces},
+    partial::HasPartial,
     stores::Stores,
 };
 
@@ -9,10 +10,20 @@ use super::TransformObject;
 
 impl TransformObject for Face {
     fn transform(self, transform: &Transform, stores: &Stores) -> Self {
-        let exterior = self.exterior().clone().transform(transform, stores);
-        let interiors = self
-            .interiors()
-            .map(|cycle| cycle.clone().transform(transform, stores));
+        let surface = self.surface().clone().transform(transform, stores);
+        let exterior = self
+            .exterior()
+            .to_partial()
+            .transform(transform, stores)
+            .with_surface(surface.clone())
+            .build(stores);
+        let interiors = self.interiors().map(|cycle| {
+            cycle
+                .to_partial()
+                .transform(transform, stores)
+                .with_surface(surface.clone())
+                .build(stores)
+        });
 
         let color = self.color();