From fb3c0e38b7be56c262f7d366face8c2aeeb2421b Mon Sep 17 00:00:00 2001
From: Jacob Mandelson <jlm@ofb.net>
Date: Sat, 17 Sep 2022 14:49:10 -0700
Subject: [PATCH] Restore default args to "at" lambda.

---
 3d-models.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/3d-models.cpp b/3d-models.cpp
index 08e73380..1917f6eb 100644
--- a/3d-models.cpp
+++ b/3d-models.cpp
@@ -1254,7 +1254,7 @@ hpcshape& geometry_information::generate_pipe(ld length, ld width, ePipeEnd endt
 
   const int MAX_X = 8;
   const int MAX_R = 20;
-  auto at = [&] (ld i, ld a, ld z, ld s) {
+  auto at = [&] (ld i, ld a, ld z = 1, ld s = 1) {
     a += 0.5;
     ld alpha = 360 * degree * a / MAX_R;
     hpcpush(xpush(i * length / MAX_X) * cspin(1, 2, alpha) * ypush0(width*z));