From d6816c177ee8d5f5191e833dce8e3c4e7e0222bf Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 22 Nov 2013 14:43:24 +0200
Subject: [PATCH] Properly round negative elevations

---
 source/libr2c2/terrain.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/libr2c2/terrain.cpp b/source/libr2c2/terrain.cpp
index e012bc9..c89d0f8 100644
--- a/source/libr2c2/terrain.cpp
+++ b/source/libr2c2/terrain.cpp
@@ -1,3 +1,4 @@
+#include <cmath>
 #include <msp/geometry/box.h>
 #include <msp/geometry/transformedshape.h>
 #include "layout.h"
@@ -83,7 +84,7 @@ void Terrain::set_node_elevation(const NodeCoordinates &c, float elev, bool join
 		throw out_of_range("Terrain::set_node_elevation");
 
 	float eg = type.get_elevation_granularity();
-	elev = int(elev/eg+0.5)*eg;
+	elev = floor(elev/eg+0.5)*eg;
 
 	if(joined)
 	{
-- 
2.43.0