From e8cdb9e6167e4d96c6d75daba427851a7e4fe138 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Mon, 19 Aug 2019 13:56:33 +0200
Subject: [PATCH] product:: fixed straightDownSeek

---
 hypgraph.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/hypgraph.cpp b/hypgraph.cpp
index 396f208e..1ec8c5ba 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -1261,8 +1261,10 @@ EX void spinEdge(ld aspd) {
   else if((WDIM == 2 || prod) && GDIM == 3 && vid.fixed_yz && !CAP_ORIENTATION) {
     aspd = 999999;
     if(straightDownSeek) {
-      if(straightDownPoint[0])
-        downspin = models::rotation * degree - atan2(straightDownPoint[0], straightDownPoint[1]);
+      auto sdp = straightDownPoint;
+      if(prod) sdp = LPV * product::inverse_exp(sdp);
+      if(sdp[0])
+        downspin = models::rotation * degree - atan2(sdp[0], sdp[1]);
       }
     else {
       if(LPV[0][2])