/// <summary>
/// A way to add a multipolygon. Avoids erroneous conversion from multiple polygons containing holes to a simple list of coordinates.
/// </summary>
public async Task Add(GeoJsonMultiPolygonJsonString geoJsonMultiPolygonJsonString, Catchment otherCatchmentInfo)
{
var geographyFactory = await this.GeometryFactoryProvider.GetGeometryFactoryAsync();
var multiPolygonGeometry = geoJsonMultiPolygonJsonString.ToMultiPolygon(geographyFactory);
var catchmentEntity = new Entities.Catchment {
Identity = otherCatchmentInfo.Identity.Value,
Name = otherCatchmentInfo.Name,
Boundary = multiPolygonGeometry,
};
await this.AddCatchmentEntity(catchmentEntity, otherCatchmentInfo.Identity);
}
public async Task SetBoundary(CatchmentIdentity identity, GeoJsonMultiPolygonJsonString newGeoJsonMultiPolygonJsonString)
{
var geographyFactory = await this.GeometryFactoryProvider.GetGeometryFactoryAsync();
var newMultiPolygonGeometry = newGeoJsonMultiPolygonJsonString.ToMultiPolygon(geographyFactory);
await this.ExecuteInContextAsync(async dbContext =>
{
var entity = await dbContext.Catchments.GetByIdentity(identity).SingleAsync();
entity.Boundary = newMultiPolygonGeometry;
await dbContext.SaveChangesAsync();
});
}