From ee4b6621e79172c3765ac68ec7425bca6b848669 Mon Sep 17 00:00:00 2001
From: Erik Hofman <erik@ehofman.com>
Date: Thu, 11 May 2017 10:29:08 +0200
Subject: [PATCH] Fit the property definied positions to the axis definition by
 negating them

---
 simgear/sound/sample.cxx | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/simgear/sound/sample.cxx b/simgear/sound/sample.cxx
index ba4ee6e7..89c26056 100644
--- a/simgear/sound/sample.cxx
+++ b/simgear/sound/sample.cxx
@@ -167,9 +167,9 @@ SGSoundSample::~SGSoundSample() {
 void SGSoundSample::update_pos_and_orientation() {
 
     if (_use_pos_props) {
-        if (_pos_prop[0]) _relative_pos[0] = _pos_prop[0]->getDoubleValue();
-        if (_pos_prop[1]) _relative_pos[1] = _pos_prop[1]->getDoubleValue();
-        if (_pos_prop[2]) _relative_pos[2] = _pos_prop[2]->getDoubleValue();
+        if (_pos_prop[0]) _relative_pos[0] = -_pos_prop[0]->getDoubleValue();
+        if (_pos_prop[1]) _relative_pos[1] = -_pos_prop[1]->getDoubleValue();
+        if (_pos_prop[2]) _relative_pos[2] = -_pos_prop[2]->getDoubleValue();
     }
     _absolute_pos = _base_pos;
     if (_relative_pos[0] || _relative_pos[1] || _relative_pos[2] ) {