From a95bfa77c8058deec4dc905fad0c4916fe16b796 Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Wed, 17 Sep 2025 15:27:23 +0100
Subject: [PATCH] The example can also read in a polygon with 3D points

---
 Stream_support/examples/Stream_support/read_WKT.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Stream_support/examples/Stream_support/read_WKT.cpp b/Stream_support/examples/Stream_support/read_WKT.cpp
index 9c7ed82d578..0ebd9f27bf9 100644
--- a/Stream_support/examples/Stream_support/read_WKT.cpp
+++ b/Stream_support/examples/Stream_support/read_WKT.cpp
@@ -1,15 +1,17 @@
 #include <CGAL/Exact_predicates_exact_constructions_kernel.h>
+#include <CGAL/Projection_traits_xy_3.h>
 #include <CGAL/IO/WKT.h>
 
 #include <iostream>
 #include <fstream>
 #include <vector>
 
-typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel;
+typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
+typedef CGAL::Projection_traits_xy_3<K> Kernel;
 
 int main(int argc, char* argv[])
 {
-  typedef CGAL::Point_2<Kernel> Point;
+  typedef Kernel::Point_2 Point;
   typedef std::vector<Point> MultiPoint;
 
   typedef std::vector<Point> LineString;
@@ -23,6 +25,7 @@ int main(int argc, char* argv[])
     MultiPoint points;
     MultiLineString polylines;
     MultiPolygon polygons;
+
     CGAL::IO::read_WKT(is, points,polylines,polygons);
 
     for(Point p : points)
@@ -30,8 +33,9 @@ int main(int argc, char* argv[])
     for(LineString ls : polylines)
         for(Point p : ls)
           std::cout<<p<<std::endl;
-    for(Polygon p : polygons)
-      std::cout<<p<<std::endl;
+    for(Polygon p : polygons){
+     std::cout<<p<<std::endl;
+    }
 
   }
   return 0;