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Reposition the sky modules only when the lat or long position is changed for 5 micro degree. This doesn't sound much, but at least it means the modules aren't repositioned every frame

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This commit is contained in:
ehofman 2003-04-17 15:42:18 +00:00
parent 206b10d400
commit d1982a9a8c
1 changed files with 11 additions and 3 deletions
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14
src/Main/main.cxx
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@ -507,7 +507,7 @@ void fgRenderFrame() {
// update view port // update view port
fgReshape( fgGetInt("/sim/startup/xsize"), fgReshape( fgGetInt("/sim/startup/xsize"),
fgGetInt("/sim/startup/ysize") ); fgGetInt("/sim/startup/ysize") );
if ( fgGetBool("/sim/rendering/clouds3d") ) { if ( fgGetBool("/sim/rendering/clouds3d") ) {
glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT ); glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
@ -637,7 +637,14 @@ void fgRenderFrame() {
<< " moon dec = " << globals->get_ephem()->getMoonDeclination() ); << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
*/ */
thesky->reposition( current__view->get_view_pos(), if ((fabs(long_curr - current__view->getLongitude_deg()) > 5e-4)
|| (fabs(lat_curr - current__view->getLatitude_deg()) > 5e-4)
|| (init != 0))
{
lat_curr = current__view->getLatitude_deg();
long_curr = current__view->getLongitude_deg();
thesky->reposition( current__view->get_view_pos(),
current__view->get_zero_elev(), current__view->get_zero_elev(),
current__view->get_world_up(), current__view->get_world_up(),
current__view->getLongitude_deg() current__view->getLongitude_deg()
@ -654,6 +661,7 @@ void fgRenderFrame() {
globals->get_ephem()->getMoonRightAscension(), globals->get_ephem()->getMoonRightAscension(),
globals->get_ephem()->getMoonDeclination(), globals->get_ephem()->getMoonDeclination(),
50000.0 ); 50000.0 );
}
} }
glEnable( GL_DEPTH_TEST ); glEnable( GL_DEPTH_TEST );
@ -684,7 +692,7 @@ void fgRenderFrame() {
// glMatrixMode( GL_PROJECTION ); // glMatrixMode( GL_PROJECTION );
// glLoadIdentity(); // glLoadIdentity();
ssgSetFOV( current__view->get_h_fov(), ssgSetFOV( current__view->get_h_fov(),
current__view->get_v_fov() ); current__view->get_v_fov() );
double agl = double agl =
current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER