From 85bfae53900d0b5415a8375d881875765aa49cdf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jochen=20G=C3=B6rtler?= <grtlr@users.noreply.github.com>
Date: Tue, 20 Nov 2018 09:22:01 +0100
Subject: [PATCH] RFC: Add comment in `Rotation::to_homogeneous()`

---
 src/geometry/rotation.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/geometry/rotation.rs b/src/geometry/rotation.rs
index f53668c7..5a4e4723 100644
--- a/src/geometry/rotation.rs
+++ b/src/geometry/rotation.rs
@@ -201,6 +201,9 @@ where DefaultAllocator: Allocator<N, D, D>
         D: DimNameAdd<U1>,
         DefaultAllocator: Allocator<N, DimNameSum<D, U1>, DimNameSum<D, U1>>,
     {
+        // We could use `MatrixN::to_homogeneous()` here, but that would imply
+        // adding the additional traits `DimAdd` and `IsNotStaticOne`. Maybe
+        // these things will get nicer once specialization lands in Rust.
         let mut res = MatrixN::<N, DimNameSum<D, U1>>::identity();
         res.fixed_slice_mut::<D, D>(0, 0).copy_from(&self.matrix);