Fixed zooming so it zooms in on where you tap.

@@ -106,6 +106,8 @@ enum {
 
 - (void)moveBy: (CGSize) delta;
 - (void)zoomByFactor: (float) zoomFactor near:(CGPoint) center;
+
+- (void)zoomInToNextNativeZoomAt:(CGPoint) pivot;
 - (float)adjustZoomForBoundingMask:(float)zoomFactor;
 - (void)adjustMapPlacementWithScale:(float)aScale;
 - (void)setZoomBounds:(float)aMinZoom maxZoom:(float)aMaxZoom;

@@ -281,6 +281,20 @@
 	}
 }
 
+- (void)zoomInToNextNativeZoomAt:(CGPoint) pivot
+{
+	// Calculate rounded zoom
+	float newZoom = roundf([self zoom] + 1);
+	NSLog(@"zoom %f -> %f", [self zoom], newZoom);
+	if (newZoom >= [self maxZoom])
+		return;
+	else
+	{
+		float factor = exp2f(newZoom - [self zoom]);
+		[self zoomByFactor:factor near:pivot];
+	}
+}
+
 - (void) drawRect: (CGRect) aRect
 {
 	[renderer drawRect:aRect];

@@ -57,7 +57,7 @@ typedef struct {
 - (void)zoomByFactor: (float) zoomFactor near:(CGPoint) aPoint;
 - (CGPoint)latLongToPixel:(CLLocationCoordinate2D)latlong;
 - (CLLocationCoordinate2D)pixelToLatLong:(CGPoint)aPixel;
-- (void)zoomInToNextNativeZoom;
+- (void)zoomInToNextNativeZoomAt:(CGPoint) pivot;
 - (void)setZoom:(int)zoomInt;
 - (void)zoomWithLatLngBoundsNorthEast:(CLLocationCoordinate2D)ne SouthWest:(CLLocationCoordinate2D)se;
 - (void)setZoomBounds:(float)aMinZoom maxZoom:(float)aMaxZoom;

@@ -288,12 +288,10 @@
 		}
 	}
 	
+	// Calculate the gesture.
 	lastGesture = [self getGestureDetails:[event allTouches]];
-	
-	//	NSLog(@"touchesEnded %d  ... lastgesture at %f, %f", [[event allTouches] count], lastGesture.center.x, lastGesture.center.y);
-	
-	//	NSLog(@"Assemble.");
 
+	// If there are no more fingers on the screen, resume any slow operations.
 	if (lastGesture.numTouches == 0)
 	{
 		[self unRegisterPausedDraggingDispatcher];
@@ -303,13 +301,11 @@
 
 	if (touch.tapCount == 2)
 	{
-//		[contents printDebuggingInformation];
-		
 		if (delegateHasDoubleTapOnMap) {
 			[delegate doubleTapOnMap: self At: lastGesture.center];
 		} else {
 			// Default behaviour matches built in maps.app
-			[self zoomInToNextNativeZoom];
+			[self zoomInToNextNativeZoomAt: [touch locationInView:self]];
 		}
 	}
 	
@@ -374,13 +370,9 @@
 
 #pragma mark Auto Zoom
 
-
-- (void)zoomInToNextNativeZoom
+- (void)zoomInToNextNativeZoomAt: (CGPoint) point
 {
-	
-	// Calculate rounded zoom
-	float newZoom = roundf([contents zoom] + 1);
-	[contents setZoom:newZoom];// Contents limits zooms which are too high
+	[contents zoomInToNextNativeZoomAt:point];
 }