Added method for retrieving a screen lat/lon bound

Added method for retrieving all markers on the screen bound
added sample code in MapViewViewController

@@ -70,6 +70,12 @@
 	// Put the marker back
 	[mapView addDefaultMarkerAt:[[mapView contents] mapCenter]];
 	
+	markers  = [mapView getMarkersForScreenBounds];
+	
+	NSLog(@"Nb Markers in Screen: %d", [markers count]);
+	
+	[mapView getScreenCoordinateBounds];
+	
 	
 
 	

@@ -43,6 +43,7 @@ typedef struct {
 } CLLocationCoordinate2D;
 
 
+
 #endif
 
 #endif
\ No newline at end of file

@@ -12,6 +12,11 @@
 #import "RMLatLong.h"
 #import "RMTile.h"
 
+typedef struct {
+	CLLocationCoordinate2D northWest;
+	CLLocationCoordinate2D southEast;
+} CLLocationCoordinate2DBounds;
+
 // constants for boundingMask
 enum {
 	// Map can be zoomed out past view limits
@@ -122,5 +127,9 @@ enum {
 - (void) removeMarker:(RMMarker *)marker;
 - (CGPoint) getMarkerScreenCoordinate: (RMMarker *)marker;
 - (CLLocationCoordinate2D) getMarkerCoordinate2D: (RMMarker *) marker;
+- (NSArray *) getMarkersForScreenBounds;
+
+- (CLLocationCoordinate2DBounds) getScreenCoordinateBounds;
+
 
 @end

@@ -584,4 +584,53 @@ static BOOL _performExpensiveOperations = YES;
 	return [self pixelToLatLong:[self getMarkerScreenCoordinate:marker]];
 }
 
+- (NSArray *) getMarkersForScreenBounds
+{
+	NSMutableArray *markers;
+	markers  = [NSMutableArray array];
+	CGRect rect = [mercatorToScreenProjection screenBounds];
+	
+	NSArray *allMarkers = [self getMarkers];
+	
+	NSEnumerator *markerEnumerator = [allMarkers objectEnumerator];
+	RMMarker *aMarker;
+	
+	while (aMarker = (RMMarker *)[markerEnumerator nextObject])
+	{
+		CGPoint markerCoord = [self getMarkerScreenCoordinate:aMarker];
+		
+		if( ((markerCoord.x > rect.origin.x) && (markerCoord.y > rect.origin.y)) &&
+		   ((markerCoord.x < (rect.origin.x + rect.size.width)) && (markerCoord.y < (rect.origin.y + rect.size.height))))
+		{
+			[markers addObject:aMarker];
+		}
+	}
+	
+	return markers;
+}
+
+- (CLLocationCoordinate2DBounds) getScreenCoordinateBounds
+{
+	CLLocationCoordinate2DBounds bounds;
+	CGRect rect = [mercatorToScreenProjection screenBounds];
+	
+	CGPoint northWest = rect.origin;
+	
+	CGPoint southEast;
+	southEast.x = rect.origin.x + rect.size.width;
+	southEast.y = rect.origin.y + rect.size.height;
+
+	NSLog(@"NortWest x:%lf y:%lf", northWest.x, northWest.y);
+	NSLog(@"SouthEast x:%lf y:%lf", southEast.x, southEast.y);
+	
+	bounds.northWest = [self pixelToLatLong:northWest];
+	bounds.southEast = [self pixelToLatLong:southEast];
+	
+	NSLog(@"NortWest Lat:%lf Lon:%lf", bounds.northWest.latitude, bounds.northWest.longitude);
+	NSLog(@"SouthEast Lat:%lf Lon:%lf", bounds.southEast.latitude, bounds.southEast.longitude);
+	
+	return bounds;
+}
+
+
 @end

@@ -12,6 +12,7 @@
 #import "RMFoundation.h"
 #import "RMLatLong.h"
 #import "RMMapViewDelegate.h"
+#import "RMMapContents.h"
 
 // iPhone-specific mapview stuff.
 // Handles event handling, whatnot.
@@ -65,5 +66,9 @@ typedef struct {
 - (void) removeMarker:(RMMarker *)marker;
 - (CGPoint) getMarkerScreenCoordinate: (RMMarker *)marker;
 - (CLLocationCoordinate2D) getMarkerCoordinate2D: (RMMarker *) marker;
+- (NSArray *) getMarkersForScreenBounds;
+
+- (CLLocationCoordinate2DBounds) getScreenCoordinateBounds;
+
 
 @end

@@ -364,4 +364,14 @@
 	return [contents getMarkerCoordinate2D:marker];
 }
 
+- (NSArray *) getMarkersForScreenBounds
+{
+	return [contents getMarkersForScreenBounds];
+}
+
+- (CLLocationCoordinate2DBounds) getScreenCoordinateBounds
+{
+	return [contents getScreenCoordinateBounds];
+}
+
 @end