// util.cxx - general-purpose utility functions.
-// Copyright (C) 2002 Curtis L. Olson - curt@me.umn.edu
+// Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
+#include <simgear/compiler.h>
+
#include <math.h>
+
+#include <vector>
+SG_USING_STD(vector);
+
+#include <simgear/debug/logstream.hxx>
+
+#include "fg_io.hxx"
+#include "fg_props.hxx"
+#include "globals.hxx"
#include "util.hxx"
+#ifdef OSG_LIBRARY_STATIC
+#include "osgDB/Registry"
+#endif
+
+void
+fgDefaultWeatherValue (const char * propname, double value)
+{
+ unsigned int i;
+
+ SGPropertyNode * branch = fgGetNode("/environment/config/boundary", true);
+ vector<SGPropertyNode_ptr> entries = branch->getChildren("entry");
+ for (i = 0; i < entries.size(); i++) {
+ entries[i]->setDoubleValue(propname, value);
+ }
+
+ branch = fgGetNode("/environment/config/aloft", true);
+ entries = branch->getChildren("entry");
+ for (i = 0; i < entries.size(); i++) {
+ entries[i]->setDoubleValue(propname, value);
+ }
+}
+
+
+void
+fgSetupWind (double min_hdg, double max_hdg, double speed, double gust)
+{
+ // Initialize to a reasonable state
+ fgDefaultWeatherValue("wind-from-heading-deg", min_hdg);
+ fgDefaultWeatherValue("wind-speed-kt", speed);
+
+ SG_LOG(SG_GENERAL, SG_INFO, "WIND: " << min_hdg << '@' <<
+ speed << " knots" << endl);
+
+ // Now, add some variety to the layers
+ min_hdg += 10;
+ if (min_hdg > 360)
+ min_hdg -= 360;
+ speed *= 1.1;
+ fgSetDouble("/environment/config/boundary/entry[1]/wind-from-heading-deg",
+ min_hdg);
+ fgSetDouble("/environment/config/boundary/entry[1]/wind-speed-kt",
+ speed);
+
+ min_hdg += 20;
+ if (min_hdg > 360)
+ min_hdg -= 360;
+ speed *= 1.1;
+ fgSetDouble("/environment/config/aloft/entry[0]/wind-from-heading-deg",
+ min_hdg);
+ fgSetDouble("/environment/config/aloft/entry[0]/wind-speed-kt",
+ speed);
+
+ min_hdg += 10;
+ if (min_hdg > 360)
+ min_hdg -= 360;
+ speed *= 1.1;
+ fgSetDouble("/environment/config/aloft/entry[1]/wind-from-heading-deg",
+ min_hdg);
+ fgSetDouble("/environment/config/aloft/entry[1]/wind-speed-kt",
+ speed);
+
+ min_hdg += 10;
+ if (min_hdg > 360)
+ min_hdg -= 360;
+ speed *= 1.1;
+ fgSetDouble("/environment/config/aloft/entry[2]/wind-from-heading-deg",
+ min_hdg);
+ fgSetDouble("/environment/config/aloft/entry[2]/wind-speed-kt",
+ speed);
+}
+
+
+void
+fgExit (int status)
+{
+#ifdef OSG_LIBRARY_STATIC
+ osgDB::Registry::instance( true);
+#endif
+
+ SG_LOG(SG_GENERAL, SG_INFO, "Exiting FlightGear with status " << status);
+ exit(status);
+}
+
// Originally written by Alex Perry.
double
fgGetLowPass (double current, double target, double timeratio)
{
if ( timeratio < 0.0 ) {
- if ( timeratio < -1.0 ) {
+ if ( timeratio < -1.0 ) {
// time went backwards; kill the filter
current = target;
} else {