From d5a8c431da6a28a1e3dc94e33e04326f111b5ef5 Mon Sep 17 00:00:00 2001
From: Jonathan Westhues <jwesthues@cq.cx>
Date: Wed, 28 May 2008 02:37:54 -0800
Subject: [PATCH] Oops, Boolean 0 - B was equal to B with the normals flipped,
 not zero.

[git-p4: depot-paths = "//depot/solvespace/": change = 1755]
---
 mesh.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/mesh.cpp b/mesh.cpp
index 38ab4fc..643d379 100644
--- a/mesh.cpp
+++ b/mesh.cpp
@@ -475,8 +475,12 @@ triangulate:
 
 SBsp3 *SBsp3::Insert(STriangle *tr, SMesh *instead) {
     if(!this) {
-        if(instead && !(instead->flipNormal)) {
-            instead->AddTriangle(tr->a, tr->b, tr->c);
+        if(instead) {
+            if(instead->flipNormal) {
+                instead->atLeastOneDiscarded = true;
+            } else {
+                instead->AddTriangle(tr->a, tr->b, tr->c);
+            }
             return NULL;
         }