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Model the effect where the sun and moon look 1.5 times larger when close to the horizon

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ehofman 2003-06-15 12:23:55 +00:00
parent 3433dbce55
commit b082300ab1
1 changed files with 4 additions and 2 deletions
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6
src/Main/main.cxx
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@ -624,6 +624,8 @@ void fgRenderFrame() {
// within the range of the far clip plane. // within the range of the far clip plane.
// Moon distance: 384,467 kilometers // Moon distance: 384,467 kilometers
// Sun distance: 150,000,000 kilometers // Sun distance: 150,000,000 kilometers
double sun_eye_eff = 0.67+pow(0.5+cos(cur_light_params.sun_angle*2)/2,0.33)/3;
double moon_eye_eff = 0.67+pow(0.5+cos(cur_light_params.moon_angle*2)/2,0.33)/3;
thesky->reposition( current__view->get_view_pos(), 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(),
@ -637,10 +639,10 @@ void fgRenderFrame() {
globals->get_time_params()->getGst(), globals->get_time_params()->getGst(),
globals->get_ephem()->getSunRightAscension(), globals->get_ephem()->getSunRightAscension(),
globals->get_ephem()->getSunDeclination(), globals->get_ephem()->getSunDeclination(),
50000.0, 50000.0 * sun_eye_eff,
globals->get_ephem()->getMoonRightAscension(), globals->get_ephem()->getMoonRightAscension(),
globals->get_ephem()->getMoonDeclination(), globals->get_ephem()->getMoonDeclination(),
40000.0 ); 40000.0 * moon_eye_eff );
} }
glEnable( GL_DEPTH_TEST ); glEnable( GL_DEPTH_TEST );