On Sun, 2009-11-01 at 18:28 +0100, Erik Hofman wrote: > At this time I've tried about everything to get the listener orientation > aligned properly. What's needed it converting the ViewOrientation matrix > (quaternation) and/or ViewOrientationOffset matrix (quaternation) to > align with OpenGL and get the look-at and look-up vector from it. > the look-at vector should match the OpenGL view vector and the up-vector > is the perpendicular vector pointing out of the top of the listeners head. > > It looks like I'm really close (for testing I've commented out some > position offset and velocity vector code) but to me it's not yet 100% > right, as if I'm missing something. I would really appreciate it if > someone who knows his way around this could take a look at > SGSoundManager::update_pos_and_orientation() in > SimGear/simgear/sound/soundmgr_openal.cxx > View related values are set in FlightGear/src/Main/viewmgr.cxx: both > recalcLookFrom() anf recalcLookAt() > > Erik
Erik, I'm not good at this stuff at all, but I just remembered that the mpmap code recovers yaw, pitch and roll from the quaternion passed in the multiplayer message... Is that what you need? Or is that where you started from? http://pigeond.net/git/?p=flightgear/fgmap.git;a=blob;f=src/fg_server_xml.cxx;hb=HEAD#l85 85 static void 86 euler_get(float lat, float lon, float ox, float oy, float oz, 87 float *heading, float *pitch, float *roll) 88 { 89 /* FGMultiplayMgr::ProcessPosMsg */ 90 91 SGVec3f angleAxis; 92 angleAxis(0) = ox; 93 angleAxis(1) = oy; 94 angleAxis(2) = oz; 95 96 SGQuatf ecOrient; 97 ecOrient = SGQuatf::fromAngleAxis(angleAxis); 98 99 /* FGAIMultiplayer::update */ 100 101 float lat_rad, lon_rad; 102 lat_rad = lat * SGD_DEGREES_TO_RADIANS; 103 lon_rad = lon * SGD_DEGREES_TO_RADIANS; 104 105 SGQuatf qEc2Hl = SGQuatf::fromLonLatRad(lon_rad, lat_rad); 106 107 SGQuatf hlOr = conj(qEc2Hl) * ecOrient; 108 109 float hDeg, pDeg, rDeg; 110 hlOr.getEulerDeg(hDeg, pDeg, rDeg); 111 112 if(heading) 113 *heading = hDeg; 114 if(pitch) 115 *pitch = pDeg; 116 if(roll) 117 *roll = rDeg; 118 119 } ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
