public TileProvider(TileConsumer consumer, Rectangle worldExtents)
{
if (consumer == TileConsumer.None)
{
throw new ArgumentException("'None' is not a valid consumer.", "consumer");
}
this.consumer = consumer;
if (consumer == TileConsumer.GoogleMaps || consumer == TileConsumer.VirtualEarth)
{
if (worldExtents != null)
{
throw new ArgumentException("World extents for this tile consumer is fixed and cannot be set (must be null)", "worldExtents");
}
if (consumer == TileConsumer.VirtualEarth)
{
minZoomLevel = 1;
maxZoomLevel = 23;
}
// get projection to grab circumference
SphericalMercatorProjector prj = new SphericalMercatorProjector();
// set mercator origin (center of the map (0,0))
double origin = prj.Circumference/2;
this.worldExtents = new Rectangle(-origin, -origin, origin, origin);
}
else if (consumer == TileConsumer.TileMapService)
{
this.worldExtents = worldExtents;
}
}
public TileProvider(TileConsumer consumer)
: this(consumer,
(consumer == TileConsumer.TileMapService ? Rectangle.GeographicWorldExtents : null))
{
}
