X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=altoslib%2FAltosMap.java;h=d99730b4cf12510ce8d77fa038c92a1fd54ba30e;hp=85f95eef9cfdf3af49cae55224b6d1b165dd9ae5;hb=0beb02f1848e34892cca6e34ba83d6ca836d6df2;hpb=4f1c4dddbce7b4e8673173f1690f79ba60e72ba2

diff --git a/altoslib/AltosMap.java b/altoslib/AltosMap.java
index 85f95eef..d99730b4 100644
--- a/altoslib/AltosMap.java
+++ b/altoslib/AltosMap.java
@@ -109,6 +109,10 @@ public class AltosMap implements AltosMapTileListener, AltosMapStoreListener {
 		return map_interface.height();
 	}
 
+	public void debug(String format, Object ... arguments) {
+		map_interface.debug(format, arguments);
+	}
+
 	public AltosPointInt floor(AltosPointDouble point) {
 		return new AltosPointInt ((int) Math.floor(point.x / AltosMap.px_size) * AltosMap.px_size,
 					      (int) Math.floor(point.y / AltosMap.px_size) * AltosMap.px_size);
@@ -150,6 +154,7 @@ public class AltosMap implements AltosMapTileListener, AltosMapStoreListener {
 	}
 
 	public void set_transform() {
+		debug("set_transform, centre is %s\n", centre);
 		if (centre != null) {
 			transform = new AltosMapTransform(width(), height(), zoom, centre);
 			repaint();
@@ -376,6 +381,11 @@ public class AltosMap implements AltosMapTileListener, AltosMapStoreListener {
 		int dx = x - drag_start.x;
 		int dy = y - drag_start.y;
 
+		if (transform == null) {
+			debug("Transform not set in drag\n");
+			return;
+		}
+
 		AltosLatLon new_centre = transform.screen_lat_lon(new AltosPointInt(width() / 2 - dx, height() / 2 - dy));
 		centre(new_centre);
 		drag_start = new AltosPointInt(x, y);