#include <simgear/compiler.h>
-#ifdef FG_HAVE_STD_INCLUDES
+#ifdef SG_HAVE_STD_INCLUDES
# include <cmath>
# include <cstdio>
# include <ctime>
-# ifdef MACOS
- FG_USING_STD(time_t);
+# ifdef macintosh
+ SG_USING_STD(time_t);
# endif
#else
# include <math.h>
#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/ephemeris/ephemeris.hxx>
-#include <simgear/math/fg_geodesy.hxx>
#include <simgear/math/point3d.hxx>
#include <simgear/math/polar3d.hxx>
+#include <simgear/math/sg_geodesy.hxx>
#include <simgear/math/vector.hxx>
+#include <simgear/timing/sg_time.hxx>
#include <Main/globals.hxx>
-#include <Main/views.hxx>
+#include <Main/viewer.hxx>
#include <Scenery/scenery.hxx>
+#include <Time/light.hxx>
#include "sunpos.hxx"
-// extern SolarSystem *solarSystem;
-extern FGEphemeris *ephem;
-
-#undef E
-#define MeanObliquity (23.440592*(FG_2PI/360))
+// #undef E // should no longer be needed
+#define MeanObliquity (23.440592*(SGD_2PI/360))
static void ecliptic_to_equatorial(double, double, double *, double *);
static double julian_date(int, int, int);
/* lazy test to ensure gregorian calendar */
if (y < 1583) {
- FG_LOG( FG_EVENT, FG_ALERT,
+ SG_LOG( SG_EVENT, SG_ALERT,
"WHOOPS! Julian dates only valid for 1582 oct 15 or later" );
}
* every ten minutes. (Comment added by Durk Talsma).
************************************************************************/
- ecliptic_to_equatorial( ephem->get_sun()->getLon(),
+ ecliptic_to_equatorial( globals->get_ephem()->get_sun()->getLon(),
0.0, &alpha, &delta );
- tmp = alpha - (FG_2PI/24)*GST(ssue);
- if (tmp < -FG_PI) {
- do tmp += FG_2PI;
- while (tmp < -FG_PI);
- } else if (tmp > FG_PI) {
- do tmp -= FG_2PI;
- while (tmp < -FG_PI);
+ tmp = alpha - (SGD_2PI/24)*GST(ssue);
+ if (tmp < -SGD_PI) {
+ do tmp += SGD_2PI;
+ while (tmp < -SGD_PI);
+ } else if (tmp > SGD_PI) {
+ do tmp -= SGD_2PI;
+ while (tmp < -SGD_PI);
}
*lon = tmp;
* meridian (GST), compute position on the earth (lat, lon) such that
* sun is directly overhead. (lat, lon are reported in radians */
-static void fgSunPositionGST(double gst, double *lon, double *lat) {
+void fgSunPositionGST(double gst, double *lon, double *lat) {
/* time_t ssue; seconds since unix epoch */
/* double *lat; (return) latitude */
/* double *lon; (return) longitude */
/* lambda = sun_ecliptic_longitude(ssue); */
/* ecliptic_to_equatorial(lambda, 0.0, &alpha, &delta); */
//ecliptic_to_equatorial (solarPosition.lonSun, 0.0, &alpha, &delta);
- ecliptic_to_equatorial( ephem->get_sun()->getLon(),
- ephem->get_sun()->getLat(),
+ ecliptic_to_equatorial( globals->get_ephem()->get_sun()->getLon(),
+ globals->get_ephem()->get_sun()->getLat(),
&alpha, &delta );
-// tmp = alpha - (FG_2PI/24)*GST(ssue);
- tmp = alpha - (FG_2PI/24)*gst;
- if (tmp < -FG_PI) {
- do tmp += FG_2PI;
- while (tmp < -FG_PI);
- } else if (tmp > FG_PI) {
- do tmp -= FG_2PI;
- while (tmp < -FG_PI);
+ // tmp = alpha - (SGD_2PI/24)*GST(ssue);
+ tmp = alpha - (SGD_2PI/24)*gst;
+ if (tmp < -SGD_PI) {
+ do tmp += SGD_2PI;
+ while (tmp < -SGD_PI);
+ } else if (tmp > SGD_PI) {
+ do tmp -= SGD_2PI;
+ while (tmp < -SGD_PI);
}
*lon = tmp;
// update the cur_time_params structure with the current sun position
void fgUpdateSunPos( void ) {
- fgLIGHT *l;
- FGView *v;
- sgVec3 nup, nsun, v0, surface_to_sun;
- Point3D p, rel_sunpos;
+ sgVec3 nup, nsun;
+ Point3D rel_sunpos;
double dot, east_dot;
double sun_gd_lat, sl_radius;
- l = &cur_light_params;
+ // 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();
- v = ¤t_view;
+ FGViewer *v = globals->get_current_view();
- FG_LOG( FG_EVENT, FG_INFO, " Updating Sun position" );
- FG_LOG( FG_EVENT, FG_INFO, " Gst = " << t->getGst() );
+ SG_LOG( SG_EVENT, SG_INFO, " Updating Sun position" );
+ SG_LOG( SG_EVENT, SG_INFO, " Gst = " << t->getGst() );
- fgSunPositionGST(t->getGst(), &l->sun_lon, &sun_gd_lat);
+ double sun_l;
+ fgSunPositionGST(t->getGst(), &sun_l, &sun_gd_lat);
+ l->set_sun_lon(sun_l);
- fgGeodToGeoc(sun_gd_lat, 0.0, &sl_radius, &l->sun_gc_lat);
+ sgGeodToGeoc(sun_gd_lat, 0.0, &sl_radius, &sun_l);
+ l->set_sun_gc_lat(sun_l);
- p = Point3D( l->sun_lon, l->sun_gc_lat, sl_radius );
- l->fg_sunpos = fgPolarToCart3d(p);
+ Point3D p = Point3D( l->get_sun_lon(), l->get_sun_gc_lat(), sl_radius );
+ l->set_sunpos( sgPolarToCart3d(p) );
- FG_LOG( FG_EVENT, FG_INFO, " t->cur_time = " << t->get_cur_time() );
- FG_LOG( FG_EVENT, FG_INFO,
+ SG_LOG( SG_EVENT, SG_INFO, " t->cur_time = " << t->get_cur_time() );
+ SG_LOG( SG_EVENT, SG_INFO,
" Sun Geodetic lat = " << sun_gd_lat
- << " Geocentric lat = " << l->sun_gc_lat );
+ << " Geocentric lat = " << l->get_sun_gc_lat() );
// update the sun light vector
- sgSetVec4( l->sun_vec,
- l->fg_sunpos.x(), l->fg_sunpos.y(), l->fg_sunpos.z(), 0.0 );
- sgNormalizeVec4( l->sun_vec );
- sgCopyVec4( l->sun_vec_inv, l->sun_vec );
- sgNegateVec4( l->sun_vec_inv );
+ 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;
+ 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;
// calculate the sun's relative angle to local up
- sgCopyVec3( nup, v->get_local_up() );
- sgSetVec3( nsun, l->fg_sunpos.x(), l->fg_sunpos.y(), l->fg_sunpos.z() );
+ sgCopyVec3( nup, v->get_world_up() );
+ sgSetVec3( nsun, l->get_sunpos().x(),
+ l->get_sunpos().y(), l->get_sunpos().z() );
sgNormalizeVec3(nup);
sgNormalizeVec3(nsun);
// cout << "nup = " << nup[0] << "," << nup[1] << ","
// cout << "nsun = " << nsun[0] << "," << nsun[1] << ","
// << nsun[2] << endl;
- l->sun_angle = acos( sgScalarProductVec3 ( nup, nsun ) );
- cout << "sun angle relative to current location = " << l->sun_angle << endl;
+ l->set_sun_angle( acos( sgScalarProductVec3 ( nup, nsun ) ) );
+ SG_LOG( SG_EVENT, SG_INFO, "sun angle relative to current location = "
+ << l->get_sun_angle() );
// calculate vector to sun's position on the earth's surface
- rel_sunpos = l->fg_sunpos - (v->get_view_pos() + scenery.center);
- v->set_to_sun( rel_sunpos.x(), rel_sunpos.y(), rel_sunpos.z() );
+ 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() );
// printf( "Vector to sun = %.2f %.2f %.2f\n",
// v->to_sun[0], v->to_sun[1], v->to_sun[2]);
- // make a vector to the current view position
- Point3D view_pos = v->get_view_pos();
- sgSetVec3( v0, view_pos.x(), view_pos.y(), view_pos.z() );
-
// Given a vector from the view position to the point on the
// earth's surface the sun is directly over, map into onto the
// local plane representing "horizontal".
- sgmap_vec_onto_cur_surface_plane( v->get_local_up(), v0, v->get_to_sun(),
- surface_to_sun );
+ sgmap_vec_onto_cur_surface_plane( v->get_world_up(), v->get_view_pos(),
+ to_sun, surface_to_sun );
sgNormalizeVec3(surface_to_sun);
- v->set_surface_to_sun( surface_to_sun[0], surface_to_sun[1],
- surface_to_sun[2] );
// cout << "(sg) Surface direction to sun is "
// << surface_to_sun[0] << ","
// << surface_to_sun[1] << ","
// cout << "Should be close to zero = "
// << sgScalarProductVec3(nup, surface_to_sun) << endl;
- // calculate the angle between v->surface_to_sun and
- // v->surface_east. We do this so we can sort out the acos()
- // ambiguity. I wish I could think of a more efficient way ... :-(
+ // calculate the angle between surface_to_sun and
+ // 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() );
// cout << " East dot product = " << east_dot << endl;
dot = sgScalarProductVec3( surface_to_sun, v->get_surface_south() );
// cout << " Dot product = " << dot << endl;
+ if (dot > 1) {
+ SG_LOG( SG_ASTRO, SG_WARN,
+ "Dot product = " << dot << " is greater than 1.0" );
+ dot = 1.0;
+ }
+
if ( east_dot >= 0 ) {
- l->sun_rotation = acos(dot);
+ l->set_sun_rotation( acos(dot) );
} else {
- l->sun_rotation = -acos(dot);
+ l->set_sun_rotation( -acos(dot) );
}
// cout << " Sky needs to rotate = " << angle << " rads = "
- // << angle * RAD_TO_DEG << " degrees." << endl;
+ // << angle * SGD_RADIANS_TO_DEGREES << " degrees." << endl;
}
projects / flightgear.git / blobdiff