geo: return the value of correct distance according to quadrant type

Add missing support for calculating distance between 3rd quadrant and 4th one across meridian. refs #1418
groonga · Jul 3, 2012 · b046ec7 · b046ec7
1 parent 39f532f
commit b046ec7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/geo.c b/lib/geo.c
@@ -1896,6 +1896,9 @@ geo_quadrant_type(grn_geo_point *point1, grn_geo_point *point2)
     } else if (point1->longitude < 0 && point2->longitude > 0 &&
                point1->latitude >= 0 && point2->latitude >= 0) {
       return QUADRANT_2ND_TO_1ST;
+    } else if (point1->longitude < 0 && point2->longitude > 0 &&
+               point1->latitude <= 0 && point2->latitude <= 0) {
+      return QUADRANT_3RD_TO_4TH;
     } else {
       /* FIXME */
       return QUADRANT_1ST;