Hi medtechnl,

There is no single method similar to the circular setPanningRestriction(). But you can use getTopLeftBorder() and getBottomRightBorder() and a bounding box check to do that by yourself.

See the example below. You need to draw the map after the check, so it does not flicker. And keep in mind you should restrict the minimum zoom level, otherwise users could zoom out further than the bounding box.

1. UnfoldingMap map;
2. Location boundTopLeft = new Location(52.8, 12.6);
3. Location boundBottomRight = new Location(52.0, 14.5);
4. public void setup() {
5.   size(800, 600);
6.   map = new UnfoldingMap(this);
7.   map.zoomAndPanTo(new Location(52.5, 13.4f), 10);
8.   map.setZoomRange(10, 12);
9.   MapUtils.createDefaultEventDispatcher(this, map);
10. }
11. public void draw() {
12.   background(0);
13.   checkBoundingBox();
14.   map.draw();
15. }
16. public void checkBoundingBox() {
17.   Location mapTopLeft = map.getTopLeftBorder();
18.   Location mapBottomRight = map.getBottomRightBorder();
19.   ScreenPosition mapTopLeftPos = map.getScreenPosition(mapTopLeft);
20.   ScreenPosition boundTopLeftPos = map.getScreenPosition(boundTopLeft);
21.   if (boundTopLeft.getLon() > mapTopLeft.getLon()) {
22.     map.panBy(mapTopLeftPos.x - boundTopLeftPos.x, 0);
23.   }
24.   if (boundTopLeft.getLat() < mapTopLeft.getLat()) {
25.     map.panBy(0, mapTopLeftPos.y - boundTopLeftPos.y);
26.   }
27.   ScreenPosition mapBottomRightPos = map.getScreenPosition(mapBottomRight);
28.   ScreenPosition boundBottomRightPos = map.getScreenPosition(boundBottomRight);
29.   if (boundBottomRight.getLon() < mapBottomRight.getLon()) {
30.     map.panBy(mapBottomRightPos.x - boundBottomRightPos.x, 0);
31.   }
32.   if (boundBottomRight.getLat() > mapBottomRight.getLat()) {
33.     map.panBy(0, mapBottomRightPos.y - boundBottomRightPos.y);
34.   }
35. }

I am aware this looks a bit lengthy, and will add such method to Unfolding in the next release. Thanks for the feedback.

Till