/// <summary>
/// Checks if a place falls within on of the test areas
/// </summary>
/// <param name="testPlace"></param>
/// <param name="areasToTest"></param>
/// <returns></returns>
public static bool PlaceIntersectsAnArea(this IPlaceWithGeo testPlace, IList <Area> areasToTest)
{
foreach (var a in areasToTest)
{
if (testPlace.Geo.STIntersects(a.Geo))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Checks all areas in related areas to see if any do not intersect with the test place and returns them
/// </summary>
/// <param name="place"></param>
/// <param name="relatedAreas"></param>
/// <returns></returns>
public static List <Area> GetNonIntersectingAreas(this IPlaceWithGeo testPlace, IList <Area> relatedAreas)
{
List <Area> notIntersectingAreas = new List <Area>();
foreach (var a in relatedAreas)
{
if (testPlace.IDstring != a.ID.ToString() && !a.Geo.STIntersects(testPlace.Geo))
{
notIntersectingAreas.Add(a);
}
}
return(notIntersectingAreas);
}
/// <summary>
/// Used in the mapping service to stop parent areas hiding sub areas of the current focused area
/// </summary>
/// <param name="area"></param>
/// <param name="areas"></param>
/// <returns></returns>
/// <remarks>Use for GetProvinceItems, GetCityItems, GetAreaItems</remarks>
/// <example>(1) The Bay Area hiding all the sub areas of San Francisco. (2) Patagonia hiding EVERYTHING in Argentina/Chile hahah /// </example>
public static List <Area> RemoveIntersectingNonChildAreas(this IPlaceWithGeo testPlace, IList <Area> areas)
{
var nonParentAreas = new List <Area>();
foreach (var a in areas)
{
if (testPlace.IDstring != a.ID.ToString())
{
if (testPlace.Geo.STContains2(a.Geo))
{
nonParentAreas.Add(a);
}
}
}
return(nonParentAreas);
}
/// <summary>
/// Checks all areas in related areas to see if any completely contains the child place and returns the ones that do
/// </summary>
/// <param name="childPlace"></param>
/// <param name="relatedAreas"></param>
/// <returns></returns>
public static List <Area> GetParentAreas(this IPlaceWithGeo childPlace, IEnumerable <Area> relatedAreas)
{
var parentAreas = new List <Area>();
var cGeom = childPlace.Geo.AsGeom();
foreach (var a in relatedAreas)
{
var ageom = a.Geo.AsGeom();
//-- First check we're not comparing the area with itself, then if the current checking area completely contains the
//-- child area we add it to the parent areas list
if (childPlace.IDstring != a.ID.ToString() && ageom.STContains(cGeom))
{
parentAreas.Add(a);
}
}
return(parentAreas);
}
