Android Question How can center a bitmap in Google Maps.

    Dim bmd =BitmapDescriptorFactory1.FromBitmap(LoadBitmap(File.DirAssets, "modissat_ch.png")) As BitmapDescriptor
    Dim mo As MarkerOptions
    mo.Initialize
'--------------------------------------------------
    mo.Position2(0,0)  ' same as circle
'--------------------------------------------------
    mo.Icon(bmd)
    mo.Visible(True)

    gmape.AddMarker(gmap, mo)

    Dim  cop As CircleOptions
    cop.Initialize
'--------------------------------------------------   
    cop.Center2(0,0)  ' same as bitmap
'--------------------------------------------------
    cop.Visible(True)
    cop.StrokeWidth(4)
    cop.StrokeColor(Colors.Red)
    cop.Radius(10000)    'if static grow or not like zoom terrain  ,the marker not.
    gmape.AddCircle (gmap, cop)