From 939050eb82a033033a0709fdf1c165fcb0ce448f Mon Sep 17 00:00:00 2001
From: Mikko Mononen <memononen@gmail.com>
Date: Thu, 8 Jul 2010 11:25:57 +0000
Subject: [PATCH] fix for Issue 89:Call to dtVperp2d - don't need to negate

---
 Detour/Source/DetourCommon.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Detour/Source/DetourCommon.cpp b/Detour/Source/DetourCommon.cpp
index 891e1ea..87469b8 100644
--- a/Detour/Source/DetourCommon.cpp
+++ b/Detour/Source/DetourCommon.cpp
@@ -125,8 +125,8 @@ bool dtIntersectSegmentPoly2D(const float* p0, const float* p1,
 		float edge[3], diff[3];
 		dtVsub(edge, &verts[i*3], &verts[j*3]);
 		dtVsub(diff, p0, &verts[j*3]);
-		float n = dtVperp2D(edge, diff);
-		float d = -dtVperp2D(edge, dir);
+		const float n = dtVperp2D(edge, diff);
+		const float d = dtVperp2D(dir, edge);
 		if (fabsf(d) < EPS)
 		{
 			// S is nearly parallel to this edge