X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Ftiming%2Ftimezone.cxx;h=7f09e6c6796e5896a2456ee13380887a32f41f5e;hb=b47d1ad5fd8ed111cae99c1f65f5bb65a5371501;hp=60ef96de95c3f98e95bc36638435476fcb9342b6;hpb=dcb95d131bc6aef1abe25d1f415e309f06e52436;p=simgear.git

diff --git a/simgear/timing/timezone.cxx b/simgear/timing/timezone.cxx
index 60ef96de..7f09e6c6 100644
--- a/simgear/timing/timezone.cxx
+++ b/simgear/timing/timezone.cxx
@@ -29,19 +29,24 @@
 #include <errno.h>
 #include <string.h>
 #include <stdio.h>
+#include <cstdlib>
+
+#include <simgear/structure/exception.hxx>
+
 #include "timezone.h"
 
-SGTimeZone::SGTimeZone(float la, float lo, char* cc, char* desc) :
-    SGGeoCoord(la, lo)
+SGTimeZone::SGTimeZone(const SGGeod& geod, char* cc, char* desc) :
+    centerpoint(SGVec3d::fromGeod(geod))
 { 
     countryCode = cc;
     descriptor = desc;
 }
 
 /* Build a timezone object from a textline in zone.tab */
-SGTimeZone::SGTimeZone(const char *infoString) :
-    SGGeoCoord()
+SGTimeZone::SGTimeZone(const char *infoString)
 {
+    double lat = 0.0, lon = 0.0;
+    
     int i = 0;
     while (infoString[i] != '\t')
         i++;
@@ -107,13 +112,14 @@ SGTimeZone::SGTimeZone(const char *infoString) :
     strncpy(buffer, (&infoString[start]), size);
     buffer[size] = 0;
     descriptor = buffer;
+    
+    centerpoint = SGVec3d::fromGeod(SGGeod::fromDeg(lon, lat));
 }
 
 /* the copy constructor */
 SGTimeZone::SGTimeZone(const SGTimeZone& other)
 {
-    lat = other.getLat();
-    lon = other.getLon();
+    centerpoint = other.centerpoint;
     countryCode = other.countryCode;
     descriptor = other.descriptor;
 }
@@ -126,33 +132,58 @@ SGTimeZoneContainer::SGTimeZoneContainer(const char *filename)
     char buffer[256];
     FILE* infile = fopen(filename, "rb");
     if (!(infile)) {
-        fprintf(stderr, "Unable to open file %s\n", filename);
-        exit(1);
-    } else { 
-        errno = 0;
+        string e = "Unable to open time zone file '";
+        throw sg_exception(e + filename + '\'');
+    }
     
-        while (1) {
-            fgets(buffer, 256, infile);
-            if (feof(infile)) {
+    errno = 0;
+
+    while (1) {
+        fgets(buffer, 256, infile);
+        if (feof(infile)) {
+            break;
+        }
+        for (char *p = buffer; *p; p++) {
+            if (*p == '#') {
+                *p = 0;
                 break;
-            }
-            for (char *p = buffer; *p; p++) {
-                if (*p == '#') {
-                    *p = 0;
-                    break;
-                }    
-            }
-            if (buffer[0]) {
-                data.push_back(new SGTimeZone(buffer));
-            }
+            }    
         }
-        if ( errno ) {
-            perror( "SGTimeZoneContainer()" );
-            errno = 0;
+        if (buffer[0]) {
+            zones.push_back(new SGTimeZone(buffer));
         }
     }
+    if ( errno ) {
+        perror( "SGTimeZoneContainer()" );
+        errno = 0;
+    }
+    
+    fclose(infile);
 }
 
 SGTimeZoneContainer::~SGTimeZoneContainer()
 {
+  TZVec::iterator it = zones.begin();
+  for (; it != zones.end(); ++it) {
+    delete *it;
+  }
+}
+
+SGTimeZone* SGTimeZoneContainer::getNearest(const SGGeod& ref) const
+{
+  SGVec3d refCart(SGVec3d::fromGeod(ref));
+  SGTimeZone* match = NULL;
+  double minDist2 = HUGE_VAL;
+  
+  TZVec::const_iterator it = zones.begin();
+  for (; it != zones.end(); ++it) {
+    double d2 = distSqr((*it)->cartCenterpoint(), refCart);
+    if (d2 < minDist2) {
+      match = *it;
+      minDist2 = d2;
+    }
+  }
+
+  return match;
 }
+