//
// $Id$
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
#include <simgear/compiler.h>
#include <math.h>
+#include <cstdlib>
+
#include <vector>
-SG_USING_STD(vector);
#include <simgear/debug/logstream.hxx>
+#include <simgear/math/SGLimits.hxx>
+#include <simgear/math/SGMisc.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)
-{
- SG_LOG(SG_GENERAL, SG_INFO, "Exiting FlightGear with status " << status);
-
- exit(status);
-}
-
+using std::vector;
// 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;
}
+
+std::string
+fgUnescape (const char *s)
+{
+ std::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