public void LoadData()
{
Boolean isRegionGeographyLoaded;
List <String> regionGuids;
WebRegionGeography regionGeography;
isRegionGeographyLoaded = false;
regionGuids = new List <String>();
regionGuids.Add(Settings.Default.ProvinceBlekingeGUID);
regionGuids.Add(Settings.Default.ProvinceSkaneGUID);
using (DataReader dataReader = GetContext().GetGeoReferenceDatabase().GetRegionsGeographyByGUIDs(regionGuids))
{
while (dataReader.Read())
{
isRegionGeographyLoaded = true;
regionGeography = new WebRegionGeography();
regionGeography.LoadData(dataReader);
Assert.IsTrue(0 <= regionGeography.Id);
Assert.IsNotNull(regionGeography.BoundingBox);
Assert.IsTrue(regionGeography.GUID.IsNotEmpty());
Assert.IsNotNull(regionGeography.MultiPolygon);
}
}
Assert.IsTrue(isRegionGeographyLoaded);
}
/// <summary>
/// Test if point is located inside region.
/// Currently only two dimensions are handled.
/// </summary>
/// <param name="regionGeography">This region geography.</param>
/// <param name="context">Web service request context.</param>
/// <param name="coordinateSystem">Coordinate system used in region.</param>
/// <param name='point'>Point.</param>
/// <returns>True if point is located inside region.</returns>
public static Boolean IsPointInsideGeography(this WebRegionGeography regionGeography,
WebServiceContext context,
WebCoordinateSystem coordinateSystem,
WebPoint point)
{
SqlGeography geographyMultiPolygon, geographyPoint;
geographyPoint = point.GetGeography();
geographyMultiPolygon = regionGeography.GetMultiPolygonGeography(context, coordinateSystem);
return(geographyMultiPolygon.STIntersects(geographyPoint).Value);
}
/// <summary>
/// Load data into the WebRegionGeography instance.
/// </summary>
/// <param name="regionGeography">This region geography.</param>
/// <param name='dataReader'>An open data reader.</param>
public static void LoadData(this WebRegionGeography regionGeography,
DataReader dataReader)
{
Int32 categoryId;
String nativeId;
regionGeography.Id = dataReader.GetInt32(RegionData.ID);
regionGeography.BoundingBox = new WebBoundingBox();
regionGeography.BoundingBox.LoadData(dataReader, RegionData.BOUNDING_BOX);
categoryId = dataReader.GetInt32(RegionData.CATEGORY_ID);
nativeId = dataReader.GetString(RegionData.NATIVE_ID);
regionGeography.GUID = new RegionGUID(categoryId, nativeId).GUID;
regionGeography.MultiPolygon = new WebMultiPolygon();
regionGeography.MultiPolygon.LoadData(dataReader, RegionData.POLYGON);
}
/// <summary>
/// Test if point is located inside region.
/// Currently only two dimensions are handled.
/// </summary>
/// <param name="regionGeography">This region geography.</param>
/// <param name="context">Web service request context.</param>
/// <param name="coordinateSystem">Coordinate system used in region.</param>
/// <param name='point'>Point.</param>
/// <returns>True if point is located inside region.</returns>
public static Boolean IsPointInsideGeometry(this WebRegionGeography regionGeography,
WebServiceContext context,
WebCoordinateSystem coordinateSystem,
WebPoint point)
{
SqlGeometry geometryMultiPolygon, geometryPoint;
if (regionGeography.BoundingBox.IsPointInside(point))
{
geometryPoint = point.GetGeometry();
geometryMultiPolygon = regionGeography.GetMultiPolygonGeometry(context, coordinateSystem);
return(geometryMultiPolygon.STContains(geometryPoint).Value);
}
else
{
// Species observation can not be inside region
// since it is not inside the regions bounding box.
return(false);
}
}
/// <summary>
/// Get a SqlGeometry instance with same information as
/// property MultiPolygon in provided WebRegionGeography.
/// </summary>
/// <param name="regionGeography">This region geography.</param>
/// <param name="context">Web service request context.</param>
/// <param name="coordinateSystem">Coordinate system used in region.</param>
/// <returns>
/// A SqlGeometry instance with same information as
/// property MultiPolygon in provided WebRegionGeography.
/// </returns>
private static SqlGeometry GetMultiPolygonGeometry(this WebRegionGeography regionGeography,
WebServiceContext context,
WebCoordinateSystem coordinateSystem)
{
SqlGeometry geometryMultiPolygon;
String cacheKey;
// Get cached information.
cacheKey = "RegionSqlGeometry:" +
regionGeography.Id +
":CoordinateSystem:" +
coordinateSystem.GetWkt();
geometryMultiPolygon = (SqlGeometry)context.GetCachedObject(cacheKey);
if (geometryMultiPolygon.IsNull())
{
geometryMultiPolygon = regionGeography.MultiPolygon.GetGeometry();
// Add information to cache.
context.AddCachedObject(cacheKey, geometryMultiPolygon, new TimeSpan(1, 0, 0), CacheItemPriority.BelowNormal);
}
return(geometryMultiPolygon);
}
