From 715a554637fa8b136e251a793d46485b27a84a5d Mon Sep 17 00:00:00 2001
From: Jonathan Westhues <jwesthues@cq.cx>
Date: Tue, 27 Jan 2009 01:22:18 -0800
Subject: [PATCH] So that's why projection into the surface kept failing; was
 using the magnitude of the wrong derivative! Fix that, good.

[git-p4: depot-paths = "//depot/solvespace/": change = 1908]
---
 srf/ratpoly.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/srf/ratpoly.cpp b/srf/ratpoly.cpp
index cccf5f6..4c677f5 100644
--- a/srf/ratpoly.cpp
+++ b/srf/ratpoly.cpp
@@ -535,7 +535,7 @@ void SSurface::ClosestPointTo(Vector p, double *u, double *v) {
         Vector dp = p.Minus(p0);
         double du = dp.Dot(tu), dv = dp.Dot(tv);
         *u += du / (tu.MagSquared());
-        *v += dv / (tu.MagSquared());
+        *v += dv / (tv.MagSquared());
     }
     dbp("didn't converge");
     dbp("have %.3f %.3f %.3f", CO(p0));