From 6cc353f8a2187346e46831b73d2ebad6dd767a09 Mon Sep 17 00:00:00 2001
From: Artem Pavlenko <artem@mapnik.org>
Date: Fri, 22 Jan 2021 15:22:18 +0000
Subject: [PATCH] Use 'proj_backward_strategy' and avoid creating an extra
 proj_transform

---
 src/text/symbolizer_helpers.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/text/symbolizer_helpers.cpp b/src/text/symbolizer_helpers.cpp
index 996b807cb..d85c998d3 100644
--- a/src/text/symbolizer_helpers.cpp
+++ b/src/text/symbolizer_helpers.cpp
@@ -326,10 +326,9 @@ void base_symbolizer_helper::initialize_points() const
             else if (type == geometry::geometry_types::Polygon)
             {
                 auto const& poly = util::get<geometry::polygon<double>>(geom);
-                proj_transform backwart_transform(prj_trans_.dest(), prj_trans_.source());
                 view_strategy vs(t_);
-                proj_strategy ps(backwart_transform);
-                using transform_group_type = geometry::strategy_group<proj_strategy, view_strategy>;
+                proj_backward_strategy ps(prj_trans_);
+                using transform_group_type = geometry::strategy_group<proj_backward_strategy, view_strategy>;
                 transform_group_type transform_group(ps, vs);
                 geometry::polygon<double> tranformed_poly(geometry::transform<double>(poly, transform_group));
                 if (how_placed == INTERIOR_PLACEMENT)