// 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 <cstdlib>
+
+#include <vector>
+using std::vector;
+
#include <simgear/debug/logstream.hxx>
#include "fg_io.hxx"
#include "globals.hxx"
#include "util.hxx"
-#if defined(FG_NETWORK_OLK)
-#include <NetworkOLK/network.h>
+#ifdef OSG_LIBRARY_STATIC
+#include "osgDB/Registry"
#endif
-
void
-fgExit (int status)
+fgDefaultWeatherValue (const char * propname, double value)
{
- SG_LOG(SG_GENERAL, SG_INFO, "Exiting FlightGear with status " << status);
+ unsigned int i;
-#if defined(FG_NETWORK_OLK)
- if (fgGetBool("/sim/networking/network-olk"))
- fgd_send_com("8", FGFS_host);
-#endif
+ 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);
+ }
- globals->get_io()->shutdown_all();
- exit(status);
+ 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);
+}
+
// 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 {
return current;
}
+
+string
+fgUnescape (const char *s)
+{
+ string r;
+ while (*s) {
+ if (*s != '\\') {
+ r += *s++;
+ continue;
+ }
+ if (!*++s)
+ break;
+ if (*s == '\\') {
+ r += '\\';
+ } else if (*s == 'n') {
+ r += '\n';
+ } else if (*s == 'r') {
+ r += '\r';
+ } else if (*s == 't') {
+ r += '\t';
+ } else if (*s == 'v') {
+ r += '\v';
+ } else if (*s == 'f') {
+ r += '\f';
+ } else if (*s == 'a') {
+ r += '\a';
+ } else if (*s == 'b') {
+ r += '\b';
+ } else if (*s == 'x') {
+ if (!*++s)
+ break;
+ int v = 0;
+ for (int i = 0; i < 2 && isxdigit(*s); i++, s++)
+ v = v * 16 + (isdigit(*s) ? *s - '0' : 10 + tolower(*s) - 'a');
+ r += v;
+ continue;
+
+ } else if (*s >= '0' && *s <= '7') {
+ int v = *s++ - '0';
+ for (int i = 0; i < 3 && *s >= '0' && *s <= '7'; i++, s++)
+ v = v * 8 + *s - '0';
+ r += v;
+ continue;
+
+ } else {
+ r += *s;
+ }
+ s++;
+ }
+ return r;
+}
+
+
+// Write out path to validation node and read it back in. A Nasal
+// listener is supposed to replace the path with a validated version
+// or an empty string otherwise.
+const char *fgValidatePath (const char *str, bool write)
+{
+ static SGPropertyNode_ptr r, w;
+ if (!r) {
+ r = fgGetNode("/sim/paths/validate/read", true);
+ r->setAttribute(SGPropertyNode::READ, true);
+ r->setAttribute(SGPropertyNode::WRITE, true);
+
+ w = fgGetNode("/sim/paths/validate/write", true);
+ w->setAttribute(SGPropertyNode::READ, true);
+ w->setAttribute(SGPropertyNode::WRITE, true);
+ }
+ SGPropertyNode *prop = write ? w : r;
+ prop->setStringValue(str);
+ const char *result = prop->getStringValue();
+ return result[0] ? result : 0;
+}
+
// end of util.cxx