From bba4603a30f39f8939540cfbca18b140df57a59e Mon Sep 17 00:00:00 2001
From: tinko92 <mail@tinkobartels.de>
Date: Mon, 23 May 2022 11:49:21 +0200
Subject: [PATCH] Fix line_interpolate termination condition for single points.
 (#1003)

* Fix line_interpolation termination condition for single points.

* Use is_point utility and BG_CONDITION macro to prevent potential msvc 2017 warning over constant condition without if constexpr.
---
 include/boost/geometry/algorithms/line_interpolate.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/boost/geometry/algorithms/line_interpolate.hpp b/include/boost/geometry/algorithms/line_interpolate.hpp
index a3b4b2ba8..47c89c582 100644
--- a/include/boost/geometry/algorithms/line_interpolate.hpp
+++ b/include/boost/geometry/algorithms/line_interpolate.hpp
@@ -37,6 +37,9 @@
 #include <boost/geometry/strategies/line_interpolate/geographic.hpp>
 #include <boost/geometry/strategies/line_interpolate/spherical.hpp>
 
+#include <boost/geometry/util/condition.hpp>
+#include <boost/geometry/util/type_traits.hpp>
+
 namespace boost { namespace geometry
 {
 
@@ -130,7 +133,7 @@ struct interpolate_range
                                p,
                                diff_distance);
                 Policy::apply(p, pointlike);
-                if (std::is_same<PointLike, point_t>::value)
+                if ( BOOST_GEOMETRY_CONDITION(util::is_point<PointLike>::value) )
                 {
                     return;
                 }