From ce5c34cb06967ea50e848c8ff25af39ff38a12c2 Mon Sep 17 00:00:00 2001
From: Didier Le Botlan <git.lebotlan@dfgh.net>
Date: Tue, 12 Apr 2022 19:42:23 +0200
Subject: [PATCH] =?UTF-8?q?Correction=20de=20:=20Distance=20renvoie=20NaN?=
 =?UTF-8?q?=20si=20les=20deux=20points=20sont=20=C3=A9gaux.=20(fix=20non?=
 =?UTF-8?q?=20test=C3=A9)?=
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---
 .../src/main/java/org/insa/graphs/model/Point.java     | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/be-graphes-model/src/main/java/org/insa/graphs/model/Point.java b/be-graphes-model/src/main/java/org/insa/graphs/model/Point.java
index 82c6f57..39ca3b1 100644
--- a/be-graphes-model/src/main/java/org/insa/graphs/model/Point.java
+++ b/be-graphes-model/src/main/java/org/insa/graphs/model/Point.java
@@ -25,7 +25,15 @@ public final class Point {
         double cosLat = Math.cos(Math.toRadians(p1.getLatitude()))
                 * Math.cos(Math.toRadians(p2.getLatitude()));
         double cosLong = Math.cos(Math.toRadians(p2.getLongitude() - p1.getLongitude()));
-        return EARTH_RADIUS * Math.acos(sinLat + cosLat * cosLong);
+
+	double koef = sinLat + cosLat * cosLong ;
+
+	if (koef >= 1.0) { koef = 1.0 ;	}
+	if (koef <= -1.0) { koef = -1.0 ; }
+	
+        res = EARTH_RADIUS * Math.acos(koef) ;
+	
+	return res
     }
 
     // Longitude and latitude of the point.