public async Task <SearchAreaModel> GetSearchAreaForIncidentAsync(int incidentId)
{
UriBuilder builder = new UriBuilder(Settings.ServiceEndpoint);
builder.Path = $"api/city/{Settings.SelectedCity}/incidents/{incidentId}/search-area";
string uri = builder.ToString();
try
{
SearchAreaModel searchArea = await _requestProvider.GetAsync <SearchAreaModel>(uri);
if (searchArea != null)
{
return(new SearchAreaModel()
{
Polygon = searchArea.Polygon.ToPolygonConvexHull().ToArray(),
//Tickets = jsonSearchArea.Tickets
});
}
return(default(SearchAreaModel));
}
catch
{
return(default(SearchAreaModel));
}
}
public static void StoreSearchArea(SearchAreaModel searchAreaModel)
{
ParseObject searchArea = new ParseObject("SearchArea");
searchArea["SearchAreaID"] = searchAreaModel.Id;
searchArea["Name"] = searchAreaModel.Name;
searchArea["Location"] = searchAreaModel.Location;
searchArea["NorthEastLng"] = searchAreaModel.NortheastLongitude;
searchArea["NorthEastLat"] = searchAreaModel.NortheastLatitude;
searchArea["SouthWestLng"] = searchAreaModel.SouthwestLongitude;
searchArea["SouthWestLat"] = searchAreaModel.SouthwestLatitude;
searchArea["IsComplete"] = searchAreaModel.IsComplete;
searchArea.SaveAsync();
}
public List<SearchAreaBlockModel> GenerateBlocks(SearchAreaModel searchArea)
{
//Calculates the "X" distance for the search area in meters.
double horizontalDistance = calculate(searchArea.NortheastLatitude,
searchArea.NortheastLongitude, searchArea.NortheastLatitude, searchArea.SouthwestLongitude);
//Calculates the "Y" distance for the search area in meters.
double verticalDistance = calculate(searchArea.NortheastLatitude,
searchArea.NortheastLongitude, searchArea.SouthwestLatitude, searchArea.NortheastLongitude);
//Calculates NE Corner Coordinates
Tuple<double, double> NWCorner = new Tuple<double, double>(searchArea.NortheastLatitude, searchArea.SouthwestLongitude);
//Assignes the vertical and horizontal values of the blocks to blockHeight and blockWidth based on the entered terrainType.
double blockHeight;
double blockWidth;
switch (searchArea.AreaType)
{
case AreaTypes.Field:
blockHeight = 50;
blockWidth = 50;
break;
case AreaTypes.Forest:
blockHeight = 25;
blockWidth = 25;
break;
case AreaTypes.DenseForest:
blockHeight = 10;
blockWidth = 10;
break;
case AreaTypes.Mountains:
blockHeight = 5;
blockWidth = 5;
break;
default:
blockHeight = 0;
blockWidth = 0;
throw new InvalidOperationException();
}
//Calculates the number of blocks needed and creates an array with that ammount.
int numberOfXBlocks = (int)Math.Ceiling(horizontalDistance / blockWidth);
int numberOfYBlocks = (int)Math.Ceiling(verticalDistance / blockHeight);
SearchAreaBlockModel[,] blockArray = new SearchAreaBlockModel[numberOfXBlocks, numberOfYBlocks];
//creates a tuple with the coordinates for the first block.
Tuple<double, double> block0Coords = calculateDisplacement(NWCorner.Item1, NWCorner.Item2, blockWidth / 2, -(blockHeight / 2));
double arrayLatitude = block0Coords.Item1;
double arrayLongitude = block0Coords.Item2;
for (int row = 0; row < numberOfXBlocks; row++)
{
//if we're not on the first row, a change in the vertical coordinates for the array.
if (row != 0)
{
Tuple<double, double> vertChangeCoords = calculateDisplacement(arrayLatitude, arrayLongitude, 0, blockHeight);
arrayLatitude = vertChangeCoords.Item1;
}
for (int column = 0; column < numberOfYBlocks; column++)
{
//if the end of the column is reached then the longitude is reset to the first blocks coordinates.
if (column == 0)
{
//sets the array longitude to the first blocks longitude.
arrayLongitude = block0Coords.Item2;
}
//A random ID and a Geopoint for the block is created.
Guid randomID = System.Guid.NewGuid();
string id = randomID.ToString();
ParseGeoPoint arrayLocation = new ParseGeoPoint(arrayLatitude, arrayLongitude);
//A new searchAreaBlockModel is created in the curent cell with all the given information.
blockArray[row, column] = new SearchAreaBlockModel(arrayLongitude, arrayLatitude, arrayLocation, row, column, id, false);
//implements longitude change
Tuple<double, double> horizChangeCoords = calculateDisplacement(arrayLatitude, arrayLongitude, blockWidth, 0);
arrayLongitude = horizChangeCoords.Item2;
}
}
//Adds the blockArray to a list in order from the top left to the bottom right.
List<SearchAreaBlockModel> lastList = new List<SearchAreaBlockModel>();
for (int row = 0; row < numberOfXBlocks; row++)
{
for (int column = 0; column < numberOfYBlocks; column++)
{
lastList.Add(blockArray[row, column]);
}
}
return lastList;
}
public Models.Search.SearchAreaModel GenerateSearchArea(string name, AreaTypes areaType, ParseGeoPoint northeastGeopoint, ParseGeoPoint southwestGeopoint)
{
Guid id = Guid.NewGuid();
string id_str = id.ToString();
double neLng = northeastGeopoint.Longitude;
double neLat = northeastGeopoint.Latitude;
double swLng = southwestGeopoint.Longitude;
double swLat = southwestGeopoint.Latitude;
SearchAreaModel searchAreaModel = new SearchAreaModel(id_str, name, areaType, northeastGeopoint, neLng, neLat, swLng, swLat, false);
return searchAreaModel;
}