public PointF UpdateUserPosition(PointF userPosition)
{
var rootNodes = Graph.RootNodes;
var totalShiftX = 0.0d;
var totalShiftY = 0.0d;
foreach (var node in rootNodes)
{
var distance = EptaStrategy.GetDistanceBetween(userPosition, node.AsPointF());
if (distance < DeadZone)
{
continue;
}
var shift = (1 / (distance * distance * 100)) * 100 * AttractionPower;
var dx = (userPosition.X - node.X) / distance * shift;
var dy = (userPosition.Y - node.Y) / distance * shift;
var length = EptaStrategy.GetDistanceBetween(new PointF(0, 0), new PointF((float)dx, (float)dy));
if (length > distance)
{
dx /= length / distance;
dy /= length / distance;
}
totalShiftX += dx;
totalShiftY += dy;
}
return(new PointF((float)(userPosition.X - totalShiftX), (float)(userPosition.Y - totalShiftY)));
}
public PointF GetLocationOfNearestBeacon(PointF userPosition)
{
var distance = float.MaxValue;
var selectedNode = new LocationNode {
X = int.MinValue, Y = int.MinValue
};
foreach (var node in Graph.RootNodes)
{
var newDist = EptaStrategy.GetDistanceBetween(userPosition, node.AsPointF());
if (!(newDist < distance))
{
continue;
}
distance = (float)newDist;
selectedNode = node;
}
return(selectedNode.AsPointF());
}