void LLViewerCamera::updateCameraLocation(const LLVector3 ¢er,
const LLVector3 &up_direction,
const LLVector3 &point_of_interest)
{
// do not update if avatar didn't move
if (!LLViewerJoystick::getInstance()->getCameraNeedsUpdate())
{
return;
}
LLVector3 last_position;
LLVector3 last_axis;
last_position = getOrigin();
last_axis = getAtAxis();
mLastPointOfInterest = point_of_interest;
// constrain to max distance from avatar
LLVector3 camera_offset = center - gAgent.getPositionAgent();
LLViewerRegion * regp = gAgent.getRegion();
F32 water_height = (NULL != regp) ? regp->getWaterHeight() : 0.f;
LLVector3 origin = center;
if (origin.mV[2] > water_height)
{
origin.mV[2] = llmax(origin.mV[2], water_height+0.20f);
}
else
{
origin.mV[2] = llmin(origin.mV[2], water_height-0.20f);
}
setOriginAndLookAt(origin, up_direction, point_of_interest);
mVelocityDir = center - last_position ;
F32 dpos = mVelocityDir.normVec() ;
LLQuaternion rotation;
rotation.shortestArc(last_axis, getAtAxis());
F32 x, y, z;
F32 drot;
rotation.getAngleAxis(&drot, &x, &y, &z);
mVelocityStat.addValue(dpos);
mAngularVelocityStat.addValue(drot);
mAverageSpeed = mVelocityStat.getMeanPerSec() ;
mAverageAngularSpeed = mAngularVelocityStat.getMeanPerSec() ;
mCosHalfCameraFOV = cosf(0.5f * getView() * llmax(1.0f, getAspect()));
// update pixel meter ratio using default fov, not modified one
mPixelMeterRatio = getViewHeightInPixels()/ (2.f*tanf(mCameraFOVDefault*0.5));
// update screen pixel area
mScreenPixelArea =(S32)((F32)getViewHeightInPixels() * ((F32)getViewHeightInPixels() * getAspect()));
}
void audio_update_wind(bool force_update)
{
#ifdef kAUDIO_ENABLE_WIND
//
// Extract height above water to modulate filter by whether above/below water
//
LLViewerRegion* region = gAgent.getRegion();
if (region)
{
static F32 last_camera_water_height = -1000.f;
LLVector3 camera_pos = gAgentCamera.getCameraPositionAgent();
F32 camera_water_height = camera_pos.mV[VZ] - region->getWaterHeight();
//
// Don't update rolloff factor unless water surface has been crossed
//
if (force_update || (last_camera_water_height * camera_water_height) < 0.f)
{
static const LLCachedControl<F32> audio_level_rolloff("AudioLevelRolloff",1);
if (camera_water_height < 0.f)
{
gAudiop->setRolloffFactor(audio_level_rolloff * LL_ROLLOFF_MULTIPLIER_UNDER_WATER);
}
else
{
gAudiop->setRolloffFactor(audio_level_rolloff);
}
}
// this line rotates the wind vector to be listener (agent) relative
// unfortunately we have to pre-translate to undo the translation that
// occurs in the transform call
gRelativeWindVec = gAgent.getFrameAgent().rotateToLocal(gWindVec - gAgent.getVelocity());
// don't use the setter setMaxWindGain() because we don't
// want to screw up the fade-in on startup by setting actual source gain
// outside the fade-in.
static const LLCachedControl<bool> mute_audio("MuteAudio",false);
static const LLCachedControl<bool> mute_ambient("MuteAmbient",false);
static const LLCachedControl<F32> audio_level_master("AudioLevelMaster", 1.0f);
static const LLCachedControl<F32> audio_level_ambient("AudioLevelAmbient",1.0f);
F32 master_volume = mute_audio ? 0.f : (F32)audio_level_master;
F32 ambient_volume = mute_ambient ? 0.f : (F32)audio_level_ambient;
F32 wind_volume = master_volume * ambient_volume;
gAudiop->mMaxWindGain = wind_volume;
last_camera_water_height = camera_water_height;
gAudiop->updateWind(gRelativeWindVec, camera_water_height);
}
#endif
}
void audio_update_wind(bool force_update)
{
#ifdef kAUDIO_ENABLE_WIND
//
// Extract height above water to modulate filter by whether above/below water
//
LLViewerRegion* region = gAgent.getRegion();
if (region)
{
static F32 last_camera_water_height = -1000.f;
LLVector3 camera_pos = gAgentCamera.getCameraPositionAgent();
F32 camera_water_height = camera_pos.mV[VZ] - region->getWaterHeight();
//
// Don't update rolloff factor unless water surface has been crossed
//
if (force_update || (last_camera_water_height * camera_water_height) < 0.f)
{
static LLUICachedControl<F32> rolloff("AudioLevelRolloff", 1.0f);
if (camera_water_height < 0.f)
{
gAudiop->setRolloffFactor(rolloff * LL_ROLLOFF_MULTIPLIER_UNDER_WATER);
}
else
{
gAudiop->setRolloffFactor(rolloff);
}
}
// Scale down the contribution of weather-simulation wind to the
// ambient wind noise. Wind velocity averages 3.5 m/s, with gusts to 7 m/s
// whereas steady-state avatar walk velocity is only 3.2 m/s.
// Without this the world feels desolate on first login when you are
// standing still.
static LLUICachedControl<F32> wind_level("AudioLevelWind", 0.5f);
LLVector3 scaled_wind_vec = gWindVec * wind_level;
// Mix in the avatar's motion, subtract because when you walk north,
// the apparent wind moves south.
LLVector3 final_wind_vec = scaled_wind_vec - gAgent.getVelocity();
// rotate the wind vector to be listener (agent) relative
gRelativeWindVec = gAgent.getFrameAgent().rotateToLocal( final_wind_vec );
// don't use the setter setMaxWindGain() because we don't
// want to screw up the fade-in on startup by setting actual source gain
// outside the fade-in.
static LLCachedControl<bool> MuteAudio(gSavedSettings,"MuteAudio");
static LLCachedControl<bool> MuteAmbient(gSavedSettings,"MuteAmbient");
static LLCachedControl<F32> AudioLevelMaster(gSavedSettings,"AudioLevelMaster");
static LLCachedControl<F32> AudioLevelAmbient(gSavedSettings,"AudioLevelAmbient");
F32 master_volume = MuteAudio ? 0.f : AudioLevelMaster;
F32 ambient_volume = MuteAmbient ? 0.f : AudioLevelAmbient;
F32 max_wind_volume = master_volume * ambient_volume;
const F32 WIND_SOUND_TRANSITION_TIME = 2.f;
// amount to change volume this frame
F32 volume_delta = (LLFrameTimer::getFrameDeltaTimeF32() / WIND_SOUND_TRANSITION_TIME) * max_wind_volume;
if (force_update)
{
// initialize wind volume (force_update) by using large volume_delta
// which is sufficient to completely turn off or turn on wind noise
volume_delta = 1.f;
}
// mute wind when not flying
if (gAgent.getFlying())
{
// volume increases by volume_delta, up to no more than max_wind_volume
gAudiop->mMaxWindGain = llmin(gAudiop->mMaxWindGain + volume_delta, max_wind_volume);
}
else
{
// volume decreases by volume_delta, down to no less than 0
gAudiop->mMaxWindGain = llmax(gAudiop->mMaxWindGain - volume_delta, 0.f);
}
last_camera_water_height = camera_water_height;
gAudiop->updateWind(gRelativeWindVec, camera_water_height);
}
#endif
}
