From: martin-s <martin-s@ffa7fe5e-494d-0410-b361-a75ebd5db220>
Date: Sat, 21 Nov 2009 07:26:04 +0000 (+0000)
Subject: Fix:Core:Avoid dragging the map from/to illegal positions
X-Git-Tag: navit-0.5.0.5194svn~2414
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0b8da40d234ce6b946d6054988cd4d6cd5bb4a98;p=profile%2Fivi%2Fnavit.git

Fix:Core:Avoid dragging the map from/to illegal positions

git-svn-id: https://navit.svn.sourceforge.net/svnroot/navit/trunk@2777 ffa7fe5e-494d-0410-b361-a75ebd5db220
---

diff --git a/navit/navit/navit.c b/navit/navit/navit.c
index 8f7283d..63f6398 100644
--- a/navit/navit/navit.c
+++ b/navit/navit/navit.c
@@ -315,14 +315,16 @@ update_transformation(struct transformation *tr, struct point *old, struct point
 	int yaw;
 	double angleo,anglen;
 
-	transform_reverse(tr, old, &co);
+	if (!transform_reverse(tr, old, &co))
+		return;
 	if (rot) {
 		angleo=atan2(old->y-rot->y, old->x-rot->x)*180/M_PI;
 		anglen=atan2(new->y-rot->y, new->x-rot->x)*180/M_PI;
 		yaw=transform_get_yaw(tr)+angleo-anglen;
 		transform_set_yaw(tr, yaw % 360);
 	}
-	transform_reverse(tr, new, &cn);
+	if (!transform_reverse(tr, new, &cn))
+		return;
 	cp=transform_get_center(tr);
 	c.x=cp->x+co.x-cn.x;
 	c.y=cp->y+co.y-cn.y;