small fixes

[simgear.git] / simgear / sound / sample_group.cxx

diff --git a/simgear/sound/sample_group.cxx b/simgear/sound/sample_group.cxx
index 4ba82f563818a0e9e627d893d4805fd6bf76a01c..539ab61bfa233eb2fb67155ff64d93c7ce93cd81 100644 (file)
--- a/simgear/sound/sample_group.cxx
+++ b/simgear/sound/sample_group.cxx
@@ -41,8 +41,8 @@ SGSampleGroup::SGSampleGroup () :
     _pause(false),
     _tied_to_listener(false),
     _velocity(SGVec3d::zeros()),
-    _orientation(SGQuatd::zeros()),
-    _position_geod(SGGeod())
+    _base_pos(SGVec3d::zeros()),
+    _orientation(SGQuatd::zeros())
 {
     _samples.clear();
 }
@@ -55,8 +55,8 @@ SGSampleGroup::SGSampleGroup ( SGSoundMgr *smgr, const string &refname ) :
     _pause(false),
     _tied_to_listener(false),
     _velocity(SGVec3d::zeros()),
-    _orientation(SGQuatd::zeros()),
-    _position_geod(SGGeod())
+    _base_pos(SGVec3d::zeros()),
+    _orientation(SGQuatd::zeros())
 {
     _smgr->add(this, refname);
     _samples.clear();
@@ -114,7 +114,7 @@ void SGSampleGroup::update( double dt ) {
     }
 
     // Update the position and orientation information for all samples.
-    if ( _changed ) {
+    if ( _changed || _smgr->has_changed() ) {
         update_pos_and_orientation();
         _changed = false;
     }
@@ -334,45 +334,33 @@ void SGSampleGroup::set_velocity( const SGVec3f &vel ) {
     }
 }
 
-// set the source position of all managed sounds
-void SGSampleGroup::update_pos_and_orientation() {
-
-    SGVec3d position = SGVec3d::fromGeod( _position_geod );
-    SGVec3d pos_offs = SGVec3d::fromGeod( _smgr->get_position_geod() );
-
-    // The rotation rotating from the earth centerd frame to
-    // the horizontal local frame
-    SGQuatd hlOr = SGQuatd::fromLonLat(_position_geod);
-
-    // Rotate the x-forward, y-right, z-down coordinate system
-    // into the OpenGL camera system with x-right, y-up, z-back.
-    SGQuatd q(-0.5, -0.5, 0.5, 0.5);
-
-    // Compute the sounds orientation and position
-    // wrt the earth centered frame - that is global coorinates
-    SGQuatd sc2body = hlOr*_orientation*q;
+void SGSampleGroup::set_volume( float vol )
+{
+    _volume = vol;
+    if (_volume < 0.0) _volume = 0.0;
+    if (_volume > 1.0) _volume = 1.0;
 
     sample_map_iterator sample_current = _samples.begin();
     sample_map_iterator sample_end = _samples.end();
     for ( ; sample_current != sample_end; ++sample_current ) {
         SGSoundSample *sample = sample_current->second;
-        sample->set_position( position - pos_offs );
-        sample->set_orientation( _orientation );
-        sample->set_rotation( sc2body );
+        sample->set_master_volume( _volume );
     }
 }
 
-void SGSampleGroup::set_volume( float vol )
-{
-    _volume = vol;
-    if (_volume < 0.0) _volume = 0.0;
-    if (_volume > 1.0) _volume = 1.0;
+// set the source position and orientation of all managed sounds
+void SGSampleGroup::update_pos_and_orientation() {
+ 
+    SGVec3d position = _base_pos - _smgr->get_position();
+     SGQuatd hlOr = SGQuatd::fromLonLat(_position_geod) * _orientation;
 
     sample_map_iterator sample_current = _samples.begin();
     sample_map_iterator sample_end = _samples.end();
     for ( ; sample_current != sample_end; ++sample_current ) {
         SGSoundSample *sample = sample_current->second;
-        sample->set_master_volume( _volume );
+        sample->set_position( position );
+        sample->set_orientation( _orientation );
+        sample->set_rotation( hlOr );
     }
 }
 
@@ -382,7 +370,7 @@ void SGSampleGroup::update_sample_config( SGSoundSample *sample ) {
 
     if ( _tied_to_listener ) {
         orientation = _smgr->get_direction();
-        position = _smgr->get_position();
+        position = SGVec3d::zeros();
         velocity = _smgr->get_velocity();
     } else {
         sample->update_pos_and_orientation();