User can pan outside of map bounds

[GoogleCodeExporter]

There are upper and lower bounds to the map, nothing north of the north
pole. nothing south of the south pole.

RouteMe does not have any way to keep a user from scrolling much further
south than the south pole/north than the north pole.

I would love if there was a way to keep a user from panning beyond the
upper and lower bounds of the map, like maps.app does.

Original issue reported on code.google.com by Quazie on 15 Mar 2009 at 3:57

[GoogleCodeExporter]

Original comment by Quazie on 15 Mar 2009 at 3:57

• Added labels: Usability

[GoogleCodeExporter]

In our use of Route me, we patched this by using Categories 
(http://en.wikipedia.org/wiki/Objective-
C#Example_usage_of_categories) to override the moveBy-method of RMMapContents 
(code below).Not exactly 
a great solution, but it works...

- (void)moveBy: (CGSize) delta{ 
    [mercatorToScreenProjection moveScreenBy:delta];
    [imagesOnScreen moveBy:delta];
    [tileLoader moveBy:delta];
    [overlay moveBy:delta];
    [overlay correctPositionOfAllSublayers];
    [renderer setNeedsDisplay];

    if(self.mapCenter.latitude>89 || self.mapCenter.latitude<-89){
        delta.width=-delta.width;
        delta.height=-delta.height;
        [self moveBy:delta];
    }
}

Original comment by knu...@gmail.com on 1 Jun 2010 at 8:07

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

MapView can have a delegate method -(BOOL)shouldMapMove:(MapView *)map 
by:(CGSize)delta

This can enable us to check for bounds and decide whether moveBy: method is 
called.

Original comment by srikanthsmail on 4 Sep 2010 at 10:17