From 43507dd1184c7775df93b10d494a7a0c31be434e Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Tue, 18 Aug 2020 16:37:44 +0200
Subject: [PATCH] mathutil: Fix Triangulator bug cleaning up hole indices

---
 panda/src/mathutil/triangulator.cxx | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/panda/src/mathutil/triangulator.cxx b/panda/src/mathutil/triangulator.cxx
index f179b24e83..fda047d5d6 100644
--- a/panda/src/mathutil/triangulator.cxx
+++ b/panda/src/mathutil/triangulator.cxx
@@ -263,7 +263,7 @@ cleanup_polygon_indices(vector_int &polygon) {
       ++pi;
     } else {
       // This index is out-of-bounds; remove it.
-      polygon.erase(_polygon.begin() + pi);
+      polygon.erase(polygon.begin() + pi);
     }
   }
 
@@ -275,11 +275,11 @@ cleanup_polygon_indices(vector_int &polygon) {
       ++pi;
     } else {
       // This vertex repeats the previous one; remove it.
-      polygon.erase(_polygon.begin() + pi);
+      polygon.erase(polygon.begin() + pi);
     }
   }
 
-  if (polygon.size() > 1 && _vertices[polygon.back()] == _vertices[_polygon.front()]) {
+  if (polygon.size() > 1 && _vertices[polygon.back()] == _vertices[polygon.front()]) {
     // The last vertex repeats the first one; remove it.
     polygon.pop_back();
   }