I need to display a circle (as with MKCircle) on a GMSMapView. This is easy when using a MKMapView and MKCircle, but can't use MKCircle with GMSMapView.
Any ideas?
Update:
This are the current(18.03.2013) options:
1. A ground marker containing a circle image.
2. A a circle made with several segments (polyline).
Edit:
3. Google added a GMSCircle (23.04.2013)
GMSGroundOverlayOptions *overlayOptions = [GMSGroundOverlayOptions options];
overlayOptions.icon = [UIImage imageNamed:@"circle"];
overlayOptions.position = touchMapCoordinate;
overlayOptions.bearing = 0;
overlayOptions.zoomLevel = 14.3;
[mapView addGroundOverlayWithOptions:overlayOptions];
For a circle image 40x40 pixels it looks ok. (radius is approximately 100 m)
Small segmented path solution:
GMSPolylineOptions *circle = [GMSPolylineOptions options];
CGPoint touchPoint = [mapView.projection pointForCoordinate:touchMapCoordinate];
GMSMutablePath *path = [GMSMutablePath path];
CGPoint circlePoint;
for (int i = 0; i < 360; i++)
{
circlePoint.x = touchPoint.x + radius * cos(i*M_PI/180);
circlePoint.y = touchPoint.y + radius * sin(i*M_PI/180);
CLLocationCoordinate2D aux = [mapView.projection coordinateForPoint:circlePoint];
[path addCoordinate:aux];
}
circle.path = path;
circle.width = 1;
[mapView addPolylineWithOptions:circle];
EDIT : 08.05.2013
GMSCircle solution:
CLLocationCoordinate2D circleCenter = CLLocationCoordinate2DMake(latitude, longitude);
GMSCircle *circ = [GMSCircle circleWithPosition:circleCenter
radius:1000];
circ.fillColor = [UIColor blueColor];
circ.strokeColor = [UIColor redColor];
circ.strokeWidth = 5;
circ.map = mapView;
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