From: ehofman <ehofman>
Date: Mon, 16 Nov 2009 13:32:34 +0000 (+0000)
Subject: What do you know, the real problem turned out to be the distance attenuation function..
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=bb46d91bc617be168074f5575581564ae50c0246;p=simgear.git

What do you know, the real problem turned out to be the distance attenuation function..
---

diff --git a/simgear/sound/sample_group.cxx b/simgear/sound/sample_group.cxx
index e56d37e5..dfe8d756 100644
--- a/simgear/sound/sample_group.cxx
+++ b/simgear/sound/sample_group.cxx
@@ -324,11 +324,11 @@ void SGSampleGroup::set_volume( float vol )
 void SGSampleGroup::update_pos_and_orientation() {
  
     SGVec3d position = SGVec3d::fromGeod(_base_pos) - _smgr->get_position();
-    SGQuatd hlOr = SGQuatd::fromLonLat(_base_pos) * _orientation;
+    SGQuatd ec2body= SGQuatd::fromLonLat(_base_pos) * _orientation;
 
     SGVec3f velocity = SGVec3f::zeros();
     if ( _velocity[0] || _velocity[1] || _velocity[2] ) {
-       velocity = toVec3f( hlOr.backTransform(_velocity*SG_FEET_TO_METER) );
+       velocity = toVec3f( ec2body.backTransform(_velocity*SG_FEET_TO_METER) );
     }
 
     sample_map_iterator sample_current = _samples.begin();
@@ -337,7 +337,7 @@ void SGSampleGroup::update_pos_and_orientation() {
         SGSoundSample *sample = sample_current->second;
         sample->set_master_volume( _volume );
         sample->set_orientation( _orientation );
-        sample->set_rotation( hlOr );
+        sample->set_rotation( ec2body );
         sample->set_position( position );
         sample->set_velocity( velocity );
     }
diff --git a/simgear/sound/sample_openal.cxx b/simgear/sound/sample_openal.cxx
index 21e7cf71..08eec611 100644
--- a/simgear/sound/sample_openal.cxx
+++ b/simgear/sound/sample_openal.cxx
@@ -197,12 +197,9 @@ SGSoundSample::~SGSoundSample() {
 
 void SGSoundSample::update_pos_and_orientation() {
 
-    _absolute_pos = _base_pos;
-#if 0
-    if ( _relative_pos[0] || _relative_pos[1] || _relative_pos[2] ) {
-        _absolute_pos += _rotation.backTransform( _relative_pos );
-    }
-#endif
+    	// position is in basic view, no need to rotate
+    	// (proper alignment is set in xmlsound)
+    _absolute_pos = _base_pos + _relative_pos;
 
     _orivec = SGVec3f::zeros();
     if ( _direction[0] || _direction[1] || _direction[2] ) {
diff --git a/simgear/sound/sample_openal.hxx b/simgear/sound/sample_openal.hxx
index b1d0cf99..a4091d29 100644
--- a/simgear/sound/sample_openal.hxx
+++ b/simgear/sound/sample_openal.hxx
@@ -337,8 +337,8 @@ public:
         _orientation = ori; _changed = true;
     }
 
-    inline void set_rotation( const SGQuatd& hlOr ) {
-        _rotation = hlOr; _changed = true;
+    inline void set_rotation( const SGQuatd& ec2body ) {
+        _rotation = ec2body; _changed = true;
     }
 
     /**
diff --git a/simgear/sound/soundmgr_openal.cxx b/simgear/sound/soundmgr_openal.cxx
index 4cf3a63c..ef4a8f15 100644
--- a/simgear/sound/soundmgr_openal.cxx
+++ b/simgear/sound/soundmgr_openal.cxx
@@ -133,11 +133,13 @@ void SGSoundMgr::init() {
     alDopplerFactor(1.0);
     alDopplerVelocity(340.3);   // speed of sound in meters per second.
 
+#if 0
     if ( alIsExtensionPresent((const ALchar*)"EXT_exponent_distance") ) {
         alDistanceModel(AL_EXPONENT_DISTANCE);
     } else {
         alDistanceModel(AL_INVERSE_DISTANCE);
     }
+#endif
 
     testForALError("listener initialization");
 
@@ -263,7 +265,6 @@ if (isNaN(_at_up_vec)) printf("NaN in listener orientation\n");
 if (isNaN(toVec3f(_absolute_pos).data())) printf("NaN in listener position\n");
 if (isNaN(_velocity.data())) printf("NaN in listener velocity\n");
 #endif
-            update_pos_and_orientation();
             alListenerf( AL_GAIN, _volume );
             alListenerfv( AL_ORIENTATION, _at_up_vec );
             // alListenerfv( AL_POSITION, toVec3f(_absolute_pos).data() );
diff --git a/simgear/sound/xmlsound.cxx b/simgear/sound/xmlsound.cxx
index 88bef765..79a57c7f 100644
--- a/simgear/sound/xmlsound.cxx
+++ b/simgear/sound/xmlsound.cxx
@@ -235,9 +235,9 @@ SGXmlSound::init(SGPropertyNode *root, SGPropertyNode *node,
    SGVec3f offset_pos = SGVec3f::zeros();
    SGPropertyNode_ptr prop = node->getChild("position");
    if ( prop != NULL ) {
-       offset_pos[0] = prop->getDoubleValue("z", 0.0);
-       offset_pos[1] = prop->getDoubleValue("y", 0.0);
-       offset_pos[2] = prop->getDoubleValue("x", 0.0);
+       offset_pos[0] = -prop->getDoubleValue("x", 0.0);
+       offset_pos[1] = -prop->getDoubleValue("y", 0.0);
+       offset_pos[2] = -prop->getDoubleValue("z", 0.0);
    }
 
    //
@@ -249,9 +249,9 @@ SGXmlSound::init(SGPropertyNode *root, SGPropertyNode *node,
    float outer_gain = 0.0;
    prop = node->getChild("orientation");
    if ( prop != NULL ) {
-      dir = SGVec3f(prop->getFloatValue("z", 0.0),
-                    prop->getFloatValue("y", 0.0),
-                    prop->getFloatValue("x", 0.0));
+      dir = SGVec3f(-prop->getFloatValue("x", 0.0),
+                    -prop->getFloatValue("y", 0.0),
+                    -prop->getFloatValue("z", 0.0));
       inner = prop->getFloatValue("inner-angle", 360.0);
       outer = prop->getFloatValue("outer-angle", 360.0);
       outer_gain = prop->getFloatValue("outer-gain", 0.0);