/// <summary>
/// Intersects all land area shapes with grid25 major grids
/// </summary>
private static void ListIntersectLandArea()
{
if (SetUpMInorGridShapefile())
{
//enumerate all shapes in the land shapefile
for (int n = 0; n < LandShapefile.NumShapes; n++)
{
//make sure there are no selections
LandShapefile.SelectNone();
//select one shape
LandShapefile.ShapeSelected[n] = true;
//do the intersection, with the intersection result saved in the objSelected array
var objSelected = new object();
Grid25Shapefile.SelectByShapefile(LandShapefile, tkSpatialRelation.srIntersects, SelectedOnly: true, ref objSelected);
_intersectedMajorGrids = (int[])objSelected;
//raise event
if (StatusUpdate != null)
{
CreateInlandGridEventArgs e = new CreateInlandGridEventArgs();
e.Status = "Major grids intersected";
e.GridCount = _intersectedMajorGrids.Length;
StatusUpdate(e);
}
PopulateMinorGrid();
if (GetMinorGridsWithinLand())
{
ProcessInlandGrids();
}
}
}
}
/// <summary>
/// Intersects selected land shapes with grid25 major grid shapefiles
/// </summary>
private static void ListIntersectSelectedLandArea()
{
if (LandShapefile.NumSelected > 0 && SetUpMInorGridShapefile())
{
//get the selected shape indexes
var selectedShapesIndexes = MapInterActionHandler.SelectedShapeIndexes;
//enumerate all selected shapes
for (int n = 0; n < selectedShapesIndexes.Length; n++)
{
//clear all selections
LandShapefile.SelectNone();
//select one shape in the selected shapes
LandShapefile.ShapeSelected[selectedShapesIndexes[n]] = true;
//intersect the selected shape with the major grid
var objSelected = new object();
Grid25Shapefile.SelectByShapefile(LandShapefile, tkSpatialRelation.srIntersects, true, ref objSelected);
_intersectedMajorGrids = (int[])objSelected;
if (StatusUpdate != null)
{
CreateInlandGridEventArgs e = new CreateInlandGridEventArgs();
e.Status = "Major grids intersected";
e.GridCount = _intersectedMajorGrids.Length;
StatusUpdate(e);
}
PopulateMinorGrid();
if (GetMinorGridsWithinLand())
{
ProcessInlandGrids();
}
}
}
}
