# include <config.h>
#endif
+#include <simgear/math/SGMath.hxx>
#include <simgear/math/vector.hxx>
-#include <simgear/math/polar3d.hxx>
-#include <simgear/math/sg_geodesy.hxx>
#include <simgear/misc/sg_path.hxx>
-#include <simgear/magvar/magvar.hxx>
#include <simgear/timing/sg_time.hxx>
-#include <FDM/flight.hxx>
#include <Main/fg_props.hxx>
#include <Main/globals.hxx>
#include <Main/viewer.hxx>
// update the cur_time_params structure with the current sun position
void fgUpdateSunPos( void ) {
- sgVec3 nup, nsun;
- Point3D rel_sunpos;
- double dot, east_dot;
- double sun_gd_lat, sl_radius;
-
- // vector in cartesian coordinates from current position to the
- // postion on the earth's surface the sun is directly over
- sgVec3 to_sun;
-
- // surface direction to go to head towards sun
- sgVec3 surface_to_sun;
-
FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
SGTime *t = globals->get_time_params();
FGViewer *v = globals->get_current_view();
SG_LOG( SG_EVENT, SG_DEBUG, " Gst = " << t->getGst() );
double sun_l;
+ double sun_gd_lat;
fgSunPositionGST(t->getGst(), &sun_l, &sun_gd_lat);
l->set_sun_lon(sun_l);
-
- sgGeodToGeoc(sun_gd_lat, 0.0, &sl_radius, &sun_l);
- l->set_sun_gc_lat(sun_l);
-
- Point3D p = Point3D( l->get_sun_lon(), l->get_sun_gc_lat(), sl_radius );
- l->set_sunpos( sgPolarToCart3d(p) );
+ l->set_sun_lat(sun_gd_lat);
+ l->set_sunpos(SGVec3d::fromGeod(SGGeod::fromRad(sun_l, sun_gd_lat)));
SG_LOG( SG_EVENT, SG_DEBUG, " t->cur_time = " << t->get_cur_time() );
SG_LOG( SG_EVENT, SG_DEBUG,
" Sun Geodetic lat = " << sun_gd_lat
- << " Geocentric lat = " << l->get_sun_gc_lat() );
+ << " Geodetic lat = " << sun_gd_lat );
// update the sun light vector
- sgSetVec4( l->sun_vec(), l->get_sunpos().x(),
- l->get_sunpos().y(), l->get_sunpos().z(), 0.0 );
- sgNormalizeVec4( l->sun_vec() );
- sgCopyVec4( l->sun_vec_inv(), l->sun_vec() );
- sgNegateVec4( l->sun_vec_inv() );
-
- // make sure these are directional light sources only
- l->sun_vec()[3] = l->sun_vec_inv()[3] = 0.0;
- // cout << " l->sun_vec = " << l->sun_vec[0] << "," << l->sun_vec[1]
- // << ","<< l->sun_vec[2] << endl;
+ l->sun_vec() = SGVec4f(toVec3f(normalize(l->get_sunpos())), 0);
+ l->sun_vec_inv() = - l->sun_vec();
// calculate the sun's relative angle to local up
- sgCopyVec3( nup, v->get_world_up() );
- sgSetVec3( nsun, l->get_sunpos().x(),
- l->get_sunpos().y(), l->get_sunpos().z() );
- sgNormalizeVec3(nup);
- sgNormalizeVec3(nsun);
+ SGVec3d viewPos = v->get_view_pos();
+ SGQuatd hlOr = SGQuatd::fromLonLat(SGGeod::fromCart(viewPos));
+ SGVec3f nup(toVec3f(hlOr.backTransform(-SGVec3d::e3())));
+
+ SGVec3f nsun(toVec3f(normalize(l->get_sunpos())));
// cout << "nup = " << nup[0] << "," << nup[1] << ","
// << nup[2] << endl;
// cout << "nsun = " << nsun[0] << "," << nsun[1] << ","
// << nsun[2] << endl;
- l->set_sun_angle( acos( sgScalarProductVec3 ( nup, nsun ) ) );
+ l->set_sun_angle( acos( dot ( nup, nsun ) ) );
SG_LOG( SG_EVENT, SG_DEBUG, "sun angle relative to current location = "
<< l->get_sun_angle() );
// calculate vector to sun's position on the earth's surface
- Point3D vp( v->get_view_pos()[0],
- v->get_view_pos()[1],
- v->get_view_pos()[2] );
- rel_sunpos = l->get_sunpos() - (vp + globals->get_scenery()->get_center());
- sgSetVec3( to_sun, rel_sunpos.x(), rel_sunpos.y(), rel_sunpos.z() );
+ SGVec3d rel_sunpos = l->get_sunpos() - v->get_view_pos();
+ // vector in cartesian coordinates from current position to the
+ // postion on the earth's surface the sun is directly over
+ SGVec3f to_sun = toVec3f(rel_sunpos);
// printf( "Vector to sun = %.2f %.2f %.2f\n",
// v->to_sun[0], v->to_sun[1], v->to_sun[2]);
// earth's surface the sun is directly over, map into onto the
// local plane representing "horizontal".
- sgmap_vec_onto_cur_surface_plane( v->get_world_up(), v->get_view_pos(),
- to_sun, surface_to_sun );
- sgNormalizeVec3(surface_to_sun);
+ SGVec3f world_up = toVec3f(hlOr.backTransform(-SGVec3d::e3()));
+ SGVec3f view_pos = toVec3f(v->get_view_pos());
+ // surface direction to go to head towards sun
+ SGVec3f surface_to_sun;
+ sgmap_vec_onto_cur_surface_plane( world_up.data(), view_pos.data(),
+ to_sun.data(), surface_to_sun.data() );
+ surface_to_sun = normalize(surface_to_sun);
// cout << "(sg) Surface direction to sun is "
// << surface_to_sun[0] << ","
// << surface_to_sun[1] << ","
// v->get_surface_east(). We do this so we can sort out the
// acos() ambiguity. I wish I could think of a more efficient
// way. :-(
- east_dot = sgScalarProductVec3( surface_to_sun, v->get_surface_east() );
+ SGVec3f surface_east(toVec3f(hlOr.backTransform(SGVec3d::e2())));
+ float east_dot = dot( surface_to_sun, surface_east );
// cout << " East dot product = " << east_dot << endl;
// calculate the angle between v->surface_to_sun and
// v->surface_south. this is how much we have to rotate the sky
// for it to align with the sun
- dot = sgScalarProductVec3( surface_to_sun, v->get_surface_south() );
+ SGVec3f surface_south(toVec3f(hlOr.backTransform(-SGVec3d::e1())));
+ float dot_ = dot( surface_to_sun, surface_south );
// cout << " Dot product = " << dot << endl;
- if (dot > 1.0) {
+ if (dot_ > 1.0) {
SG_LOG( SG_ASTRO, SG_INFO,
- "Dot product = " << dot << " is greater than 1.0" );
- dot = 1.0;
+ "Dot product = " << dot_ << " is greater than 1.0" );
+ dot_ = 1.0;
}
- else if (dot < -1.0) {
+ else if (dot_ < -1.0) {
SG_LOG( SG_ASTRO, SG_INFO,
- "Dot product = " << dot << " is less than -1.0" );
- dot = -1.0;
+ "Dot product = " << dot_ << " is less than -1.0" );
+ dot_ = -1.0;
}
if ( east_dot >= 0 ) {
- l->set_sun_rotation( acos(dot) );
+ l->set_sun_rotation( acos(dot_) );
} else {
- l->set_sun_rotation( -acos(dot) );
+ l->set_sun_rotation( -acos(dot_) );
}
// cout << " Sky needs to rotate = " << angle << " rads = "
// << angle * SGD_RADIANS_TO_DEGREES << " degrees." << endl;
projects / flightgear.git / blobdiff