Get image u,v from screen touch

gistfile1.cs

//put this just before the 'break;' of switch 'case MotionEventActions.Down:' in MapView

float u = (_lastTouchX-_translateX)/(_map.CurrentFloor.Image.IntrinsicWidth*_scaleFactor) + 0.50f;
float v = (_lastTouchY-_translateY)/(_map.CurrentFloor.Image.IntrinsicHeight*_scaleFactor) + 0.50f;
Log.Wtf("map_press", String.Format("Map Touched: (u,v):({0},{1}", u, v));

Updated for WebView-style Map View:

float u = (ev.GetX() + ScrollX) / (Scale * _map.CurrentFloor.Width);
float v = (ev.GetY() + ScrollY) / (Scale * _map.CurrentFloor.Height);
Log.Wtf("map_press", String.Format("Map Touched: (u,v):({0},{1}", u, v));