protected void Init(DistanceUnits units, DistanceCalculator calculator, Rectangle worldBounds)
{
if (units == null)
throw new ArgumentException("units can't be null", "units");
this.units = units;
if (calculator == null)
{
calculator = IsGeo()
? (DistanceCalculator)new GeodesicSphereDistCalc.Haversine(units.EarthRadius())
: new CartesianDistCalc();
}
this.calculator = calculator;
if (worldBounds == null)
{
worldBounds = IsGeo() ? GEO_WORLDBOUNDS : MAX_WORLDBOUNDS;
}
else
{
if (IsGeo())
Debug.Assert(new RectangleImpl(worldBounds).Equals(GEO_WORLDBOUNDS));
if (worldBounds.GetCrossesDateLine())
throw new ArgumentException("worldBounds shouldn't cross dateline: " + worldBounds, "worldBounds");
}
//copy so we can ensure we have the right implementation
worldBounds = MakeRect(worldBounds.GetMinX(), worldBounds.GetMaxX(), worldBounds.GetMinY(), worldBounds.GetMaxY());
this.worldBounds = worldBounds;
shapeReadWriter = MakeShapeReadWriter();
this.maxCircleDistance = IsGeo() ? calculator.DegreesToDistance(180) : (double?)null;
}
