From 02a15aeb23b53bcc8ef3310793190f5fcf2ca170 Mon Sep 17 00:00:00 2001
From: Hanno Braun <hello@hannobraun.com>
Date: Wed, 9 Apr 2025 12:02:56 +0200
Subject: [PATCH] Add comment

---
 experiments/2025-03-18/src/geometry/surface.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/experiments/2025-03-18/src/geometry/surface.rs b/experiments/2025-03-18/src/geometry/surface.rs
index 46dbb6dfe..a4814749c 100644
--- a/experiments/2025-03-18/src/geometry/surface.rs
+++ b/experiments/2025-03-18/src/geometry/surface.rs
@@ -77,6 +77,12 @@ impl SurfaceGeometry for SweptCurve {
     }
 
     fn approximate(&self, _: &Polygon) -> Vec<Point<2>> {
+        // In a swept curve, the curve sweeps along a straight path. So the
+        // surface is only curved along one dimension.
+        //
+        // As a result, all points that could possibly be needed to approximate
+        // the surface, are already on the provided boundary. As per the
+        // contract of this method, we must not return those.
         vec![]
     }
 }