/// <summary>
/// Initializes the grid by loading or creating cardinal direction points.
/// </summary>
private void Init()
{
var directionPoints = new Dictionary <DirectionEnum, IGeoLocation>();
// load existing cardinal direction points from DB
foreach (var directionPoint in Home.CardinalDirectionPoints.Where(x => x.UnitDistance == unitDistance))
{
directionPoints[directionPoint.Direction] = directionPoint;
}
// add any missing direction points
foreach (DirectionEnum direction in Enum.GetValues(typeof(DirectionEnum)))
{
if (directionPoints.ContainsKey(direction))
{
continue;
}
directionPoints[direction] = ComputeOffset(direction);
var newPoint = new CardinalDirectionPoint()
{
OriginId = Home.Id,
UnitDistance = unitDistance,
Direction = direction,
Latitude = directionPoints[direction].Latitude,
Longitude = directionPoints[direction].Longitude
};
dbContext.CardinalDirectionPoints.InsertOnSubmit(newPoint);
}
// save any possible new points
dbContext.SubmitChanges();
// set deltas
deltaLat = (directionPoints[DirectionEnum.North].Latitude - directionPoints[DirectionEnum.South].Latitude) / 2.0;
deltaLon = (directionPoints[DirectionEnum.East].Longitude - directionPoints[DirectionEnum.West].Longitude) / 2.0;
}
private void detach_CardinalDirectionPoints(CardinalDirectionPoint entity)
{
this.SendPropertyChanging();
entity.Origin = null;
}
partial void UpdateCardinalDirectionPoint(CardinalDirectionPoint instance);
partial void DeleteCardinalDirectionPoint(CardinalDirectionPoint instance);
partial void InsertCardinalDirectionPoint(CardinalDirectionPoint instance);