From e244e3cff8328fb59fdc14a80ddd2c95a8c78d9a Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Tue, 4 Dec 2018 23:06:24 +0100
Subject: [PATCH] parabolic1 generates a straight line in Euclidean

---
 hyperpoint.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hyperpoint.cpp b/hyperpoint.cpp
index c1625082..4d370b3d 100644
--- a/hyperpoint.cpp
+++ b/hyperpoint.cpp
@@ -320,7 +320,10 @@ transmatrix ypush(ld alpha) {
   }
 
 transmatrix parabolic1(ld u) {
-  return transmatrix {{{-u*u/2+1, u, u*u/2}, {-u, 1, u}, {-u*u/2, u, u*u/2+1}}};
+  if(euclid)
+    return ypush(u);
+  else
+    return transmatrix {{{-u*u/2+1, u, u*u/2}, {-u, 1, u}, {-u*u/2, u, u*u/2+1}}};
   }
 
 // rotate the hyperbolic plane around C0 such that H[1] == 0 and H[0] >= 0