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Aspose.GIS for .NET 25.9 Release Notes

This page contains release notes information for Aspose.GIS for .NET 25.9.

Full List of Issues Covering all Changes in this Release

Key	Summary	Category
GISNET-683	Ability to intersect huge shape files	Feature
GISNET-814	Ability to union extra complex geometries	Feature
GISNET-1891	Optimization of performance and RAM usage of new KmlLayer	Enhancement

Public API changes

Following members have been added:

M:Aspose.Gis.VectorLayer.IntersectionByGeometry(Aspose.Gis.VectorLayer)
M:Aspose.Gis.Geometries.Geometry.Union(System.Collections.Generic.List{Aspose.Gis.Geometries.IGeometry})
M:Aspose.Gis.Geometries.IGeometry.Union(System.Collections.Generic.List{Aspose.Gis.Geometries.IGeometry})

Following members have been removed:

None

Usage examples:

GISNET-683. Ability to intersect huge shape files

   // KML, GDB, ShapeFile, GeoJson and other format are supported
   var driver = Drivers.Kml
   string firstPath = "path_to_file1";
   string secondPath = "path_to_file2";
	
   using (var layer = driver.CreateLayer(firstPath))
   {
       for (int i = 0; i < 10; i++)
       {
           var first_PointList = new List<Point>();
           first_PointList.Add(new Point(i * 10, 0));
           first_PointList.Add(new Point(i * 10 + 10, 0));
           first_PointList.Add(new Point(i * 10 + 10, 5));
           first_PointList.Add(new Point(i * 10, 5));
           first_PointList.Add(new Point(i * 10, 0));
           var first_exteriorRing = new LinearRing(first_PointList);
           Polygon polygon = new Polygon(first_exteriorRing);
           var feature = layer.ConstructFeature();
           feature.Geometry = polygon;
           layer.Add(feature);
       }
   }

   using (var layer = driver.CreateLayer(secondPath))
   {
       for (int i = 50; i < 120; i++)
       {
           var first_PointList = new List<Point>();
           first_PointList.Add(new Point(i + 1, 4));
           first_PointList.Add(new Point(i + 3, 4));
           first_PointList.Add(new Point(i + 3, 6));
           first_PointList.Add(new Point(i + 1, 6));
           first_PointList.Add(new Point(i + 1, 4));
           var first_exteriorRing = new LinearRing(first_PointList);
           Polygon polygon = new Polygon(first_exteriorRing);
           var feature = layer.ConstructFeature();
           feature.Geometry = polygon;
           layer.Add(feature);
       }
   }
	

   using (var firstlayer = driver.OpenLayer(firstPath))
   {
       using (var secondlayer = driver.OpenLayer(secondPath))
       {
           var res_1 = firstlayer.IntersectionByGeometry(secondlayer);
           var res_2 = secondlayer.IntersectionByGeometry(firstlayer);

			if (res_1.Count != 5 || res_2.Count != 50) 
			{
				throw new Exception("Intersection was incorrect");
			}
		}
   }

GISNET-814. Ability to union extra complex geometries

	var pointList1 = new List<Point>();
	pointList1.Add(new Point(0, 0));
	pointList1.Add(new Point(10, 0));
	pointList1.Add(new Point(10, 5));
	pointList1.Add(new Point(0, 5));
	pointList1.Add(new Point(0, 0));
	var exteriorRing1 = new LinearRing(pointList1);
	IGeometry geometry = new Polygon(exteriorRing1);

	List<IGeometry> listOfGeometries = new List<IGeometry>();
	for (int i = 0; i < 5; i++)
	{
		var pointList2 = new List<Point>();
		pointList2.Add(new Point(i + 1, 4));
		pointList2.Add(new Point(i + 3, 4));
		pointList2.Add(new Point(i + 3, 6));
		pointList2.Add(new Point(i + 1, 6));
		pointList2.Add(new Point(i + 1, 4));
		var exteriorRing2 = new LinearRing(pointList2);
		listOfGeometries.Add(new Polygon(exteriorRing2));
	}

    IGeometry geomAfterUnion = geometry.Union(listOfGeometries);
	
	if (geomAfterUnion.ToString() != "POLYGON ((7 5, 10 5, 10 0, 0 0, 0 5, 1 5, 1 6, 2 6, 3 6, 4 6, 5 6, 6 6, 7 6, 7 5))" ||
		geomAfterUnion.GetArea() != 56) 
	{
		throw new Exception("Incorrect Union");				
	}