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Nothing fancy, it all seemed to work properly already...

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This commit is contained in:
ehofman 2008-08-22 09:50:22 +00:00
parent cfc8a13c8a
commit 8bb5bf7c46
2 changed files with 59 additions and 46 deletions
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103
src/Sound/fg_fx.cxx
View file

@ -50,6 +50,8 @@ FGFX::FGFX () :
_pause( fgGetNode("/sim/sound/pause") ),
_volume( fgGetNode("/sim/sound/volume") )
{
sgdSetVec3(last_visitor_pos, 0, 0, 0);
sgdSetVec3(last_model_pos, 0, 0, 0);
}
FGFX::~FGFX ()
@ -209,63 +211,70 @@ FGFX::play_message( const string path, const string fname, double volume )
void
FGFX::update_pos_and_orientation(SGSoundMgr *smgr, double dt)
{
SGModelPlacement *model = globals->get_aircraft_model()->get3DModel();
FGViewer *observer = globals->get_current_view();
// Right now we make a simplifying assumption that the primary
// aircraft is the source of all sounds and that all sounds are
// positioned in the aircraft base
static sgdVec3 last_visitor_pos = {0, 0, 0};
static sgdVec3 last_model_pos = {0, 0, 0};
FGViewer *current_view = globals->get_current_view();
// EMH: Note: this is fine, to hear multiple aircraft simulataniously
// we just have to trigger one instance of the FGFX class for every
// aircraft
// get the orientation
const SGQuatd view_or = current_view->getViewOrientation();
const SGQuatd view_or = observer->getViewOrientation();
SGQuatd surf_or = SGQuatd::fromLonLatDeg(
current_view->getLongitude_deg(), current_view->getLatitude_deg());
observer->getLongitude_deg(),
observer->getLatitude_deg());
SGQuatd model_or = SGQuatd::fromYawPitchRollDeg(
globals->get_aircraft_model()->get3DModel()->getHeadingDeg(),
globals->get_aircraft_model()->get3DModel()->getPitchDeg(),
globals->get_aircraft_model()->get3DModel()->getRollDeg());
model->getHeadingDeg(),
model->getPitchDeg(),
model->getRollDeg());
// get the up and at vector in the aircraft base
// (ok, the up vector is a down vector, but the coordinates
// are finally calculated in a left hand system and openal
// lives in a right hand system. Therefore we need to pass
// the down vector to get correct stereo sound.)
SGVec3d sgv_up = model_or.rotateBack(
surf_or.rotateBack(view_or.rotate(SGVec3d(0, 1, 0))));
sgVec3 up;
SGVec3d sgv_up, sgv_at;
sgVec3 up, at;
sgv_up
= model_or.rotateBack(surf_or.rotateBack(view_or.rotate(SGVec3d(0,1,0))));
sgSetVec3(up, sgv_up[0], sgv_up[1], sgv_up[2]);
SGVec3d sgv_at = model_or.rotateBack(
surf_or.rotateBack(view_or.rotate(SGVec3d(0, 0, 1))));
sgVec3 at;
sgv_at
= model_or.rotateBack(surf_or.rotateBack(view_or.rotate(SGVec3d(0,0,1))));
sgSetVec3(at, sgv_at[0], sgv_at[1], sgv_at[2]);
// get the location data for the primary FDM (now hardcoded to ac model)...
SGLocation *acmodel_loc = NULL;
acmodel_loc = (SGLocation *)globals->
get_aircraft_model()->get3DModel()->getSGLocation();
// EMH: to add multiple sound sources this should be replaced
SGLocation *acmodel_loc = (SGLocation *)model->getSGLocation();
// calculate speed of visitor and model
sgVec3 listener_vel, model_vel;
SGVec3d SGV3d_help;
sgdVec3 sgdv3_help;
sgdVec3 sgdv3_null = {0, 0, 0};
sgdSubVec3( sgdv3_help,
last_visitor_pos, (double *)&current_view->get_view_pos());
sgdAddVec3( last_visitor_pos, sgdv3_null, (double *)&current_view->get_view_pos());
SGV3d_help = model_or.rotateBack(
surf_or.rotateBack(SGVec3d(sgdv3_help[0],
sgdv3_help[1], sgdv3_help[2])));
sgSetVec3( listener_vel, SGV3d_help[0], SGV3d_help[1], SGV3d_help[2]);
sgdSubVec3(sgdv3_help,
last_visitor_pos, (double *)&observer->get_view_pos());
sgdAddVec3(last_visitor_pos,
sgdv3_null, (double *)&observer->get_view_pos());
sgdSubVec3( sgdv3_help,
last_model_pos, acmodel_loc->get_absolute_view_pos());
sgdAddVec3( last_model_pos, sgdv3_null, acmodel_loc->get_absolute_view_pos());
SGV3d_help = model_or.rotateBack(
surf_or.rotateBack(SGVec3d(sgdv3_help[0],
sgdv3_help[1], sgdv3_help[2])));
surf_or.rotateBack(
SGVec3d(sgdv3_help[0], sgdv3_help[1], sgdv3_help[2])
));
sgSetVec3(listener_vel, SGV3d_help[0], SGV3d_help[1], SGV3d_help[2]);
sgdSubVec3(sgdv3_help, last_model_pos,acmodel_loc->get_absolute_view_pos());
sgdAddVec3(last_model_pos, sgdv3_null,acmodel_loc->get_absolute_view_pos());
SGV3d_help = model_or.rotateBack(
surf_or.rotateBack(
SGVec3d(sgdv3_help[0], sgdv3_help[1], sgdv3_help[2])
));
sgSetVec3( model_vel, SGV3d_help[0], SGV3d_help[1], SGV3d_help[2]);
if (dt > 0) {
@ -278,11 +287,12 @@ FGFX::update_pos_and_orientation(SGSoundMgr *smgr, double dt)
{
// check if the relative speed model vs listener has moved suddenly, too
sgVec3 delta_vel;
sgSubVec3(delta_vel, listener_vel, model_vel );
sgSubVec3(delta_vel, listener_vel, model_vel);
if (sgLengthVec3(delta_vel) > 1000)
sgSetVec3(listener_vel, model_vel[0], model_vel[1], model_vel[2] ); // a sane value
// a sane value
sgSetVec3(listener_vel, model_vel[0], model_vel[1], model_vel[2]);
else
smgr->set_listener_vel( listener_vel );
smgr->set_listener_vel(listener_vel);
}
else
smgr->set_listener_vel( listener_vel );
@ -290,17 +300,23 @@ FGFX::update_pos_and_orientation(SGSoundMgr *smgr, double dt)
// set positional offset for sources
sgdVec3 dsource_pos_offset;
sgdSubVec3( dsource_pos_offset,
(double*) &current_view->get_view_pos(),
(double*) &observer->get_view_pos(),
acmodel_loc->get_absolute_view_pos() );
SGVec3d sgv_dsource_pos_offset = model_or.rotateBack(
surf_or.rotateBack(SGVec3d(dsource_pos_offset[0],
dsource_pos_offset[1], dsource_pos_offset[2])));
SGVec3d sgv_dsource_pos_offset;
sgv_dsource_pos_offset = model_or.rotateBack(
surf_or.rotateBack(
GVec3d(dsource_pos_offset[0],
dsource_pos_offset[1],
dsource_pos_offset[2])
));
sgVec3 source_pos_offset;
sgSetVec3(source_pos_offset, sgv_dsource_pos_offset[0],
sgv_dsource_pos_offset[1], sgv_dsource_pos_offset[2]);
sgSetVec3(source_pos_offset,
sgv_dsource_pos_offset[0],
sgv_dsource_pos_offset[1],
sgv_dsource_pos_offset[2]);
smgr->set_source_pos_all( source_pos_offset );
smgr->set_source_vel_all( model_vel );
float orient[6];
for (int i = 0; i < 3; i++) {
@ -309,15 +325,10 @@ FGFX::update_pos_and_orientation(SGSoundMgr *smgr, double dt)
}
smgr->set_listener_orientation( orient );
// set the velocity
// all sources are defined to be in the model
smgr->set_source_vel_all( model_vel );
// The listener is always positioned at the origin.
sgVec3 listener_pos;
sgSetVec3( listener_pos, 0.0, 0.0, 0.0 );
smgr->set_listener_pos( listener_pos );
}
// end of fg_fx.cxx

2
src/Sound/fg_fx.hxx
View file

@ -77,6 +77,8 @@ public:
private:
void update_pos_and_orientation(SGSoundMgr *smgr, double dt);
sgdVec3 last_visitor_pos;
sgdVec3 last_model_pos;
vector<SGXmlSound *> _sound;
queue<SGSoundSample *> _samplequeue;