From 8ec1e3e73d3281b8d8948b9b155f47ae6680dbd4 Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Tue, 6 Oct 2015 16:14:20 +0100
Subject: [PATCH] geometry_is_simple - fix handling multi-geometries (1.59)

---
 include/mapnik/geometry_is_simple.hpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/include/mapnik/geometry_is_simple.hpp b/include/mapnik/geometry_is_simple.hpp
index 002556cf4..868b41afd 100644
--- a/include/mapnik/geometry_is_simple.hpp
+++ b/include/mapnik/geometry_is_simple.hpp
@@ -105,7 +105,11 @@ struct geometry_is_simple
             // https://svn.boost.org/trac/boost/ticket/11710
             return true;
         }
-        return boost::geometry::is_simple(multi_line);
+        for (auto const& line : multi_line)
+        {
+            if (!(*this)(line)) return false;
+        }
+        return true;
     }
     template <typename T>
     result_type operator() (multi_polygon<T> const& multi_poly) const
@@ -116,7 +120,11 @@ struct geometry_is_simple
             // https://svn.boost.org/trac/boost/ticket/11710
             return true;
         }
-        return boost::geometry::is_simple(multi_poly);
+        for (auto const& poly : multi_poly)
+        {
+            if (!(*this)(poly)) return false;
+        }
+        return true;
     }
 
 };