예제 #1
0
 public virtual void TestPolyline()
 {
     com.epl.geometry.Polyline polyline = new com.epl.geometry.Polyline();
     polyline.StartPath(-97.06138, 32.837);
     polyline.LineTo(-97.06133, 32.836);
     polyline.LineTo(-97.06124, 32.834);
     polyline.LineTo(-97.06127, 32.832);
     polyline.StartPath(-97.06326, 32.759);
     polyline.LineTo(-97.06298, 32.755);
     {
         com.fasterxml.jackson.core.JsonParser polylinePathsWgs84Parser = factory.CreateJsonParser(com.epl.geometry.GeometryEngine.GeometryToJson(spatialReferenceWGS84, polyline));
         com.epl.geometry.MapGeometry          mPolylineWGS84MP         = com.epl.geometry.GeometryEngine.JsonToGeometry(polylinePathsWgs84Parser);
         NUnit.Framework.Assert.IsTrue(polyline.GetPointCount() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPointCount());
         NUnit.Framework.Assert.IsTrue(polyline.GetPoint(0).GetX() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPoint(0).GetX());
         NUnit.Framework.Assert.IsTrue(polyline.GetPoint(0).GetY() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPoint(0).GetY());
         NUnit.Framework.Assert.IsTrue(polyline.GetPathCount() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPathCount());
         NUnit.Framework.Assert.IsTrue(polyline.GetSegmentCount() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetSegmentCount());
         NUnit.Framework.Assert.IsTrue(polyline.GetSegmentCount(0) == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetSegmentCount(0));
         NUnit.Framework.Assert.IsTrue(polyline.GetSegmentCount(1) == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetSegmentCount(1));
         int lastIndex = polyline.GetPointCount() - 1;
         NUnit.Framework.Assert.IsTrue(polyline.GetPoint(lastIndex).GetX() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPoint(lastIndex).GetX());
         NUnit.Framework.Assert.IsTrue(polyline.GetPoint(lastIndex).GetY() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPoint(lastIndex).GetY());
         NUnit.Framework.Assert.IsTrue(spatialReferenceWGS84.GetID() == mPolylineWGS84MP.GetSpatialReference().GetID());
         com.epl.geometry.Polyline emptyPolyline = new com.epl.geometry.Polyline();
         string emptyString = com.epl.geometry.GeometryEngine.GeometryToJson(spatialReferenceWGS84, emptyPolyline);
         mPolylineWGS84MP = com.epl.geometry.GeometryEngine.JsonToGeometry(factory.CreateJsonParser(emptyString));
         NUnit.Framework.Assert.IsTrue(mPolylineWGS84MP.GetGeometry().IsEmpty());
         NUnit.Framework.Assert.IsTrue(spatialReferenceWGS84.GetID() == mPolylineWGS84MP.GetSpatialReference().GetID());
     }
 }
        public static void TestDifferenceOnPolyline()
        {
            // # * * #
            // # * @
            // # @ *
            // # *
            //
            // ///////////////////////////////
            //
            // The polyline drawn in *s represents basePl
            // The polyline drawn in #s represents compPl
            // The @ represents their intersection points, so that
            // the difference polyline will be basePl with two new vertices @ added.
            com.epl.geometry.Polyline basePl = new com.epl.geometry.Polyline();
            basePl.StartPath(new com.epl.geometry.Point(-117, 20));
            basePl.LineTo(new com.epl.geometry.Point(-130, 10));
            basePl.LineTo(new com.epl.geometry.Point(-120, 50));
            com.epl.geometry.Polyline compPl = new com.epl.geometry.Polyline();
            compPl.StartPath(new com.epl.geometry.Point(-116, 20));
            compPl.LineTo(new com.epl.geometry.Point(-131, 10));
            compPl.LineTo(new com.epl.geometry.Point(-121, 50));
            com.epl.geometry.Geometry diffGeom = com.epl.geometry.GeometryEngine.Difference(basePl, compPl, com.epl.geometry.SpatialReference.Create(4326));
            NUnit.Framework.Assert.IsTrue(diffGeom is com.epl.geometry.Polyline);
            com.epl.geometry.Polyline diffPolyline = (com.epl.geometry.Polyline)diffGeom;
            int pointCountDiffPolyline             = diffPolyline.GetPointCount();

            // first line in comp_pl is 3y = 2x + 292
            NUnit.Framework.Assert.AreEqual(3 * 20, 2 * (-116) + 292);
            NUnit.Framework.Assert.AreEqual(3 * 10, 2 * (-131) + 292);
            // new points should also lie on this line
            NUnit.Framework.Assert.IsTrue(3.0 * diffPolyline.GetCoordinates2D()[1].y - 2.0 * diffPolyline.GetCoordinates2D()[1].x - 292.0 == 0.0);
            NUnit.Framework.Assert.IsTrue(3.0 * diffPolyline.GetCoordinates2D()[3].y - 2.0 * diffPolyline.GetCoordinates2D()[3].x - 292.0 == 0.0);
            for (int i = 0; i < 3; i++)
            {
                NUnit.Framework.Assert.IsTrue(basePl.GetCoordinates2D()[i].x == diffPolyline.GetCoordinates2D()[2 * i].x);
                NUnit.Framework.Assert.IsTrue(basePl.GetCoordinates2D()[i].y == diffPolyline.GetCoordinates2D()[2 * i].y);
            }
            NUnit.Framework.Assert.AreEqual(5, pointCountDiffPolyline);
        }
 internal static bool IsConvex_(com.epl.geometry.Geometry geom, com.epl.geometry.ProgressTracker progress_tracker)
 {
     if (geom.IsEmpty())
     {
         return(true);
     }
     // vacuously true
     com.epl.geometry.Geometry.Type type = geom.GetType();
     if (type == com.epl.geometry.Geometry.Type.Point)
     {
         return(true);
     }
     // vacuously true
     if (type == com.epl.geometry.Geometry.Type.Envelope)
     {
         com.epl.geometry.Envelope envelope = (com.epl.geometry.Envelope)geom;
         if (envelope.GetXMin() == envelope.GetXMax() || envelope.GetYMin() == envelope.GetYMax())
         {
             return(false);
         }
         return(true);
     }
     if (com.epl.geometry.MultiPath.IsSegment(type.Value()))
     {
         com.epl.geometry.Segment segment = (com.epl.geometry.Segment)geom;
         if (segment.GetStartXY().Equals(segment.GetEndXY()))
         {
             return(false);
         }
         return(true);
     }
     // true, but we will upgrade to a Polyline for the ConvexHull operation
     if (type == com.epl.geometry.Geometry.Type.MultiPoint)
     {
         com.epl.geometry.MultiPoint multi_point = (com.epl.geometry.MultiPoint)geom;
         if (multi_point.GetPointCount() == 1)
         {
             return(true);
         }
         // vacuously true, but we will downgrade to a Point for the ConvexHull operation
         return(false);
     }
     if (type == com.epl.geometry.Geometry.Type.Polyline)
     {
         com.epl.geometry.Polyline polyline = (com.epl.geometry.Polyline)geom;
         if (polyline.GetPathCount() == 1 && polyline.GetPointCount() == 2)
         {
             if (!polyline.GetXY(0).Equals(polyline.GetXY(1)))
             {
                 return(true);
             }
         }
         // vacuously true
         return(false);
     }
     // create convex hull
     com.epl.geometry.Polygon polygon = (com.epl.geometry.Polygon)geom;
     if (polygon.GetPathCount() != 1 || polygon.GetPointCount() < 3)
     {
         return(false);
     }
     return(com.epl.geometry.ConvexHull.IsPathConvex(polygon, 0, progress_tracker));
 }
        /// <exception cref="com.fasterxml.jackson.core.JsonParseException"/>
        /// <exception cref="System.IO.IOException"/>
        internal virtual bool TestPolyline()
        {
            bool bAnswer = true;

            com.epl.geometry.Polyline polyline = new com.epl.geometry.Polyline();
            polyline.StartPath(-97.06138, 32.837);
            polyline.LineTo(-97.06133, 32.836);
            polyline.LineTo(-97.06124, 32.834);
            polyline.LineTo(-97.06127, 32.832);
            polyline.StartPath(-97.06326, 32.759);
            polyline.LineTo(-97.06298, 32.755);
            {
                com.fasterxml.jackson.core.JsonParser polylinePathsWgs84Parser = factory.CreateParser(com.epl.geometry.GeometryEngine.GeometryToJson(spatialReferenceWGS84, polyline));
                com.epl.geometry.MapGeometry          mPolylineWGS84MP         = com.epl.geometry.GeometryEngine.JsonToGeometry(polylinePathsWgs84Parser);
                NUnit.Framework.Assert.IsTrue(polyline.GetPointCount() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPointCount());
                NUnit.Framework.Assert.IsTrue(polyline.GetPoint(0).GetX() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPoint(0).GetX());
                NUnit.Framework.Assert.IsTrue(polyline.GetPoint(0).GetY() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPoint(0).GetY());
                NUnit.Framework.Assert.IsTrue(polyline.GetPathCount() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPathCount());
                NUnit.Framework.Assert.IsTrue(polyline.GetSegmentCount() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetSegmentCount());
                NUnit.Framework.Assert.IsTrue(polyline.GetSegmentCount(0) == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetSegmentCount(0));
                NUnit.Framework.Assert.IsTrue(polyline.GetSegmentCount(1) == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetSegmentCount(1));
                int lastIndex = polyline.GetPointCount() - 1;
                NUnit.Framework.Assert.IsTrue(polyline.GetPoint(lastIndex).GetX() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPoint(lastIndex).GetX());
                NUnit.Framework.Assert.IsTrue(polyline.GetPoint(lastIndex).GetY() == ((com.epl.geometry.Polyline)mPolylineWGS84MP.GetGeometry()).GetPoint(lastIndex).GetY());
                NUnit.Framework.Assert.IsTrue(spatialReferenceWGS84.GetID() == mPolylineWGS84MP.GetSpatialReference().GetID());
                if (!CheckResultSpatialRef(mPolylineWGS84MP, 4326, 0))
                {
                    bAnswer = false;
                }
            }
            {
                com.epl.geometry.Polyline p = new com.epl.geometry.Polyline();
                p.AddAttribute(com.epl.geometry.VertexDescription.Semantics.Z);
                p.AddAttribute(com.epl.geometry.VertexDescription.Semantics.M);
                string s = com.epl.geometry.GeometryEngine.GeometryToJson(spatialReferenceWebMerc1, p);
                NUnit.Framework.Assert.IsTrue(s.Equals("{\"hasZ\":true,\"hasM\":true,\"paths\":[],\"spatialReference\":{\"wkid\":102100,\"latestWkid\":3857}}"));
                p.StartPath(0, 0);
                p.LineTo(0, 1);
                p.StartPath(2, 2);
                p.LineTo(3, 3);
                p.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 0, 0, 3);
                p.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 1, 0, 5);
                s = com.epl.geometry.GeometryEngine.GeometryToJson(spatialReferenceWebMerc1, p);
                NUnit.Framework.Assert.IsTrue(s.Equals("{\"hasZ\":true,\"hasM\":true,\"paths\":[[[0,0,3,null],[0,1,0,5]],[[2,2,0,null],[3,3,0,null]]],\"spatialReference\":{\"wkid\":102100,\"latestWkid\":3857}}"));
            }
            {
                string paths = "{\"hasZ\" : true, \"paths\" : [ [ [0.0, 0.0,3], [0, 10.0,3], [10.0, 10.0,3, 6666], [10.0, 0.0,3, 6666] ], [ [1.0, 1,3], [1.0, 9.0,3], [9.0, 9.0,3], [1.0, 9.0,3] ] ], \"spatialReference\" : {\"wkid\" : 4326}, \"hasM\" : false}";
                com.epl.geometry.MapGeometry mapGeometry = com.epl.geometry.GeometryEngine.JsonToGeometry(factory.CreateParser(paths));
                com.epl.geometry.Polyline    p           = (com.epl.geometry.Polyline)mapGeometry.GetGeometry();
                NUnit.Framework.Assert.IsTrue(p.GetPathCount() == 2);
                int count = p.GetPathCount();
                NUnit.Framework.Assert.IsTrue(p.GetPointCount() == 8);
                NUnit.Framework.Assert.IsTrue(p.HasAttribute(com.epl.geometry.VertexDescription.Semantics.Z));
                NUnit.Framework.Assert.IsTrue(!p.HasAttribute(com.epl.geometry.VertexDescription.Semantics.M));
                double z = p.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.Z, 0, 0);
                NUnit.Framework.Assert.IsTrue(z == 3);
                double length = p.CalculateLength2D();
                NUnit.Framework.Assert.IsTrue(System.Math.Abs(length - 54.0) <= 0.001);
                com.epl.geometry.SpatialReference spatial_reference = mapGeometry.GetSpatialReference();
                NUnit.Framework.Assert.IsTrue(spatial_reference.GetID() == 4326);
            }
            return(bAnswer);
        }
예제 #5
0
 private static void ShowProjectedGeometryInfo(com.epl.geometry.MapGeometry mapGeom)
 {
     System.Console.Out.WriteLine("\n");
     com.epl.geometry.MapGeometry geom = mapGeom;
     // while ((geom = geomCursor.next()) != null) {
     if (geom.GetGeometry() is com.epl.geometry.Point)
     {
         com.epl.geometry.Point pnt = (com.epl.geometry.Point)geom.GetGeometry();
         System.Console.Out.WriteLine("Point(" + pnt.GetX() + " , " + pnt.GetY() + ")");
         if (geom.GetSpatialReference() == null)
         {
             System.Console.Out.WriteLine("No spatial reference");
         }
         else
         {
             System.Console.Out.WriteLine("wkid: " + geom.GetSpatialReference().GetID());
         }
     }
     else
     {
         if (geom.GetGeometry() is com.epl.geometry.MultiPoint)
         {
             com.epl.geometry.MultiPoint mp = (com.epl.geometry.MultiPoint)geom.GetGeometry();
             System.Console.Out.WriteLine("Multipoint has " + mp.GetPointCount() + " points.");
             System.Console.Out.WriteLine("wkid: " + geom.GetSpatialReference().GetID());
         }
         else
         {
             if (geom.GetGeometry() is com.epl.geometry.Polygon)
             {
                 com.epl.geometry.Polygon mp = (com.epl.geometry.Polygon)geom.GetGeometry();
                 System.Console.Out.WriteLine("Polygon has " + mp.GetPointCount() + " points and " + mp.GetPathCount() + " parts.");
                 if (mp.GetPathCount() > 1)
                 {
                     System.Console.Out.WriteLine("Part start of 2nd segment : " + mp.GetPathStart(1));
                     System.Console.Out.WriteLine("Part end of 2nd segment   : " + mp.GetPathEnd(1));
                     System.Console.Out.WriteLine("Part size of 2nd segment  : " + mp.GetPathSize(1));
                     int start = mp.GetPathStart(1);
                     int end   = mp.GetPathEnd(1);
                     for (int i = start; i < end; i++)
                     {
                         com.epl.geometry.Point pp = mp.GetPoint(i);
                         System.Console.Out.WriteLine("Point(" + i + ") = (" + pp.GetX() + ", " + pp.GetY() + ")");
                     }
                 }
                 System.Console.Out.WriteLine("wkid: " + geom.GetSpatialReference().GetID());
             }
             else
             {
                 if (geom.GetGeometry() is com.epl.geometry.Polyline)
                 {
                     com.epl.geometry.Polyline mp = (com.epl.geometry.Polyline)geom.GetGeometry();
                     System.Console.Out.WriteLine("Polyline has " + mp.GetPointCount() + " points and " + mp.GetPathCount() + " parts.");
                     System.Console.Out.WriteLine("Part start of 2nd segment : " + mp.GetPathStart(1));
                     System.Console.Out.WriteLine("Part end of 2nd segment   : " + mp.GetPathEnd(1));
                     System.Console.Out.WriteLine("Part size of 2nd segment  : " + mp.GetPathSize(1));
                     int start = mp.GetPathStart(1);
                     int end   = mp.GetPathEnd(1);
                     for (int i = start; i < end; i++)
                     {
                         com.epl.geometry.Point pp = mp.GetPoint(i);
                         System.Console.Out.WriteLine("Point(" + i + ") = (" + pp.GetX() + ", " + pp.GetY() + ")");
                     }
                     System.Console.Out.WriteLine("wkid: " + geom.GetSpatialReference().GetID());
                 }
             }
         }
     }
 }
예제 #6
0
 public static void TestEditShape__()
 {
     {
         // Single part polygon
         com.epl.geometry.Polygon poly = new com.epl.geometry.Polygon();
         poly.StartPath(10, 10);
         poly.LineTo(10, 12);
         poly.LineTo(14, 15);
         poly.LineTo(10, 11);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom = editShape.AddGeometry(poly);
         com.epl.geometry.Polygon poly2 = (com.epl.geometry.Polygon)editShape.GetGeometry(geom);
         NUnit.Framework.Assert.IsTrue(poly.Equals(poly2));
     }
     {
         // Two part poly
         com.epl.geometry.Polygon poly = new com.epl.geometry.Polygon();
         poly.StartPath(10, 10);
         poly.LineTo(10, 12);
         poly.LineTo(14, 15);
         poly.LineTo(10, 11);
         poly.StartPath(100, 10);
         poly.LineTo(100, 12);
         poly.LineTo(14, 150);
         poly.LineTo(10, 101);
         poly.LineTo(100, 11);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom = editShape.AddGeometry(poly);
         com.epl.geometry.Polygon poly2 = (com.epl.geometry.Polygon)editShape.GetGeometry(geom);
         NUnit.Framework.Assert.IsTrue(poly.Equals(poly2));
     }
     {
         // Single part polyline
         com.epl.geometry.Polyline poly = new com.epl.geometry.Polyline();
         poly.StartPath(10, 10);
         poly.LineTo(10, 12);
         poly.LineTo(14, 15);
         poly.LineTo(10, 11);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom = editShape.AddGeometry(poly);
         com.epl.geometry.Polyline poly2 = (com.epl.geometry.Polyline)editShape.GetGeometry(geom);
         NUnit.Framework.Assert.IsTrue(poly.Equals(poly2));
     }
     {
         // Two part poly
         com.epl.geometry.Polyline poly = new com.epl.geometry.Polyline();
         poly.StartPath(10, 10);
         poly.LineTo(10, 12);
         poly.LineTo(14, 15);
         poly.LineTo(10, 11);
         poly.StartPath(100, 10);
         poly.LineTo(100, 12);
         poly.LineTo(14, 150);
         poly.LineTo(10, 101);
         poly.LineTo(100, 11);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom = editShape.AddGeometry(poly);
         com.epl.geometry.Polyline poly2 = (com.epl.geometry.Polyline)editShape.GetGeometry(geom);
         NUnit.Framework.Assert.IsTrue(poly.Equals(poly2));
     }
     {
         // Five part poly. Close one of parts to test if it works.
         com.epl.geometry.Polyline poly = new com.epl.geometry.Polyline();
         poly.StartPath(10, 10);
         poly.LineTo(10, 12);
         poly.LineTo(14, 15);
         poly.LineTo(10, 11);
         poly.StartPath(100, 10);
         poly.LineTo(100, 12);
         poly.LineTo(14, 150);
         poly.LineTo(10, 101);
         poly.LineTo(100, 11);
         poly.StartPath(1100, 101);
         poly.LineTo(1300, 132);
         poly.LineTo(144, 150);
         poly.LineTo(106, 1051);
         poly.LineTo(1600, 161);
         poly.StartPath(100, 190);
         poly.LineTo(1800, 192);
         poly.LineTo(184, 8150);
         poly.LineTo(1080, 181);
         poly.StartPath(1030, 10);
         poly.LineTo(1300, 132);
         poly.LineTo(314, 3150);
         poly.LineTo(310, 1301);
         poly.LineTo(3100, 311);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom = editShape.AddGeometry(poly);
         editShape.SetClosedPath(editShape.GetNextPath(editShape.GetFirstPath(geom)), true);
         ((com.epl.geometry.MultiPathImpl)poly._getImpl()).ClosePathWithLine(1);
         com.epl.geometry.Polyline poly2 = (com.epl.geometry.Polyline)editShape.GetGeometry(geom);
         NUnit.Framework.Assert.IsTrue(poly.Equals(poly2));
     }
     {
         // Test erase
         com.epl.geometry.Polyline poly = new com.epl.geometry.Polyline();
         poly.StartPath(10, 10);
         poly.LineTo(10, 12);
         poly.LineTo(314, 3150);
         poly.LineTo(310, 1301);
         poly.LineTo(3100, 311);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom   = editShape.AddGeometry(poly);
         int vertex = editShape.GetFirstVertex(editShape.GetFirstPath(geom));
         vertex = editShape.RemoveVertex(vertex, true);
         vertex = editShape.GetNextVertex(vertex);
         editShape.RemoveVertex(vertex, true);
         com.epl.geometry.Polyline poly2 = (com.epl.geometry.Polyline)editShape.GetGeometry(geom);
         poly.SetEmpty();
         poly.StartPath(10, 12);
         poly.LineTo(310, 1301);
         poly.LineTo(3100, 311);
         NUnit.Framework.Assert.IsTrue(poly.Equals(poly2));
     }
     {
         // Test erase
         com.epl.geometry.Polygon poly = new com.epl.geometry.Polygon();
         poly.StartPath(10, 10);
         poly.LineTo(10, 12);
         poly.LineTo(314, 3150);
         poly.LineTo(310, 1301);
         poly.LineTo(3100, 311);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom   = editShape.AddGeometry(poly);
         int vertex = editShape.GetFirstVertex(editShape.GetFirstPath(geom));
         vertex = editShape.RemoveVertex(vertex, true);
         vertex = editShape.GetNextVertex(vertex);
         editShape.RemoveVertex(vertex, true);
         com.epl.geometry.Polygon poly2 = (com.epl.geometry.Polygon)editShape.GetGeometry(geom);
         poly.SetEmpty();
         poly.StartPath(10, 12);
         poly.LineTo(310, 1301);
         poly.LineTo(3100, 311);
         NUnit.Framework.Assert.IsTrue(poly.Equals(poly2));
     }
     {
         // Test Filter Close Points
         com.epl.geometry.Polygon poly = new com.epl.geometry.Polygon();
         poly.StartPath(10, 10);
         poly.LineTo(10, 10.001);
         poly.LineTo(10.001, 10);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom = editShape.AddGeometry(poly);
         editShape.FilterClosePoints(0.002, true, false);
         com.epl.geometry.Polygon poly2 = (com.epl.geometry.Polygon)editShape.GetGeometry(geom);
         NUnit.Framework.Assert.IsTrue(poly2.IsEmpty());
     }
     {
         // Test Filter Close Points
         com.epl.geometry.Polygon poly = new com.epl.geometry.Polygon();
         poly.StartPath(10, 10);
         poly.LineTo(10, 10.0025);
         poly.LineTo(11.0, 10);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom = editShape.AddGeometry(poly);
         editShape.FilterClosePoints(0.002, true, false);
         com.epl.geometry.Polygon poly2 = (com.epl.geometry.Polygon)editShape.GetGeometry(geom);
         NUnit.Framework.Assert.IsTrue(!poly2.IsEmpty());
     }
     {
         // Test Filter Close Points
         com.epl.geometry.Polygon poly = new com.epl.geometry.Polygon();
         poly.StartPath(10, 10);
         poly.LineTo(10, 10.001);
         poly.LineTo(11.0, 10);
         com.epl.geometry.EditShape editShape = new com.epl.geometry.EditShape();
         int geom = editShape.AddGeometry(poly);
         editShape.FilterClosePoints(0.002, true, false);
         com.epl.geometry.Polygon poly2 = (com.epl.geometry.Polygon)editShape.GetGeometry(geom);
         NUnit.Framework.Assert.IsTrue(poly2.IsEmpty());
     }
     {
         // Test attribute splitting 1
         com.epl.geometry.Polyline polyline = new com.epl.geometry.Polyline();
         polyline.StartPath(0, 0);
         polyline.LineTo(1, 1);
         polyline.LineTo(2, 2);
         polyline.LineTo(3, 3);
         polyline.LineTo(4, 4);
         polyline.StartPath(5, 5);
         polyline.LineTo(6, 6);
         polyline.LineTo(7, 7);
         polyline.LineTo(8, 8);
         polyline.LineTo(9, 9);
         polyline.AddAttribute(com.epl.geometry.VertexDescription.Semantics.Z);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 0, 0, 4);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 1, 0, 8);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 2, 0, 12);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 3, 0, 16);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 4, 0, 20);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 5, 0, 22);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 6, 0, 26);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 7, 0, 30);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 8, 0, 34);
         polyline.SetAttribute(com.epl.geometry.VertexDescription.Semantics.Z, 9, 0, 38);
         com.epl.geometry.EditShape shape = new com.epl.geometry.EditShape();
         int geometry = shape.AddGeometry(polyline);
         com.epl.geometry.AttributeStreamOfInt32 vertex_handles = new com.epl.geometry.AttributeStreamOfInt32(0);
         for (int path = shape.GetFirstPath(geometry); path != -1; path = shape.GetNextPath(path))
         {
             for (int vertex = shape.GetFirstVertex(path); vertex != -1; vertex = shape.GetNextVertex(vertex))
             {
                 if (vertex != shape.GetLastVertex(path))
                 {
                     vertex_handles.Add(vertex);
                 }
             }
         }
         double[] t = new double[1];
         for (int i = 0; i < vertex_handles.Size(); i++)
         {
             int vertex = vertex_handles.Read(i);
             t[0] = 0.5;
             shape.SplitSegment(vertex, t, 1);
         }
         com.epl.geometry.Polyline chopped_polyline = (com.epl.geometry.Polyline)shape.GetGeometry(geometry);
         NUnit.Framework.Assert.IsTrue(chopped_polyline.GetPointCount() == 18);
         double att_ = 4;
         for (int i_1 = 0; i_1 < 18; i_1++)
         {
             double att = chopped_polyline.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.Z, i_1, 0);
             NUnit.Framework.Assert.IsTrue(att == att_);
             att_ += 2;
         }
     }
     {
         // Test attribute splitting 2
         com.epl.geometry.Polyline line1 = new com.epl.geometry.Polyline();
         com.epl.geometry.Polyline line2 = new com.epl.geometry.Polyline();
         line1.AddAttribute(com.epl.geometry.VertexDescription.Semantics.M);
         line2.AddAttribute(com.epl.geometry.VertexDescription.Semantics.M);
         line1.StartPath(0, 0);
         line1.LineTo(10, 10);
         line2.StartPath(10, 0);
         line2.LineTo(0, 10);
         line1.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 0, 0, 7);
         line1.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 1, 0, 17);
         line2.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 0, 0, 5);
         line2.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 1, 0, 15);
         com.epl.geometry.EditShape shape = new com.epl.geometry.EditShape();
         int g1 = shape.AddGeometry(line1);
         int g2 = shape.AddGeometry(line2);
         com.epl.geometry.CrackAndCluster.Execute(shape, 0.001, null, true);
         com.epl.geometry.Polyline chopped_line1 = (com.epl.geometry.Polyline)shape.GetGeometry(g1);
         com.epl.geometry.Polyline chopped_line2 = (com.epl.geometry.Polyline)shape.GetGeometry(g2);
         double att1 = chopped_line1.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 1, 0);
         double att2 = chopped_line2.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 1, 0);
         NUnit.Framework.Assert.IsTrue(att1 == 12);
         NUnit.Framework.Assert.IsTrue(att2 == 10);
     }
     {
         // Test attribute splitting 3
         com.epl.geometry.Polygon polygon = new com.epl.geometry.Polygon();
         polygon.AddAttribute(com.epl.geometry.VertexDescription.Semantics.M);
         polygon.StartPath(0, 0);
         polygon.LineTo(0, 10);
         polygon.LineTo(10, 10);
         polygon.LineTo(10, 0);
         polygon.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 0, 0, 7);
         polygon.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 1, 0, 17);
         polygon.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 2, 0, 23);
         polygon.SetAttribute(com.epl.geometry.VertexDescription.Semantics.M, 3, 0, 43);
         com.epl.geometry.EditShape shape = new com.epl.geometry.EditShape();
         int geometry = shape.AddGeometry(polygon);
         com.epl.geometry.AttributeStreamOfInt32 vertex_handles = new com.epl.geometry.AttributeStreamOfInt32(0);
         int start_v = shape.GetFirstVertex(shape.GetFirstPath(geometry));
         int v       = start_v;
         do
         {
             vertex_handles.Add(v);
             v = shape.GetNextVertex(v);
         }while (v != start_v);
         double[] t = new double[1];
         for (int i = 0; i < vertex_handles.Size(); i++)
         {
             int v1 = vertex_handles.Read(i);
             t[0] = 0.5;
             shape.SplitSegment(v1, t, 1);
         }
         com.epl.geometry.Polygon cut_polygon = (com.epl.geometry.Polygon)shape.GetGeometry(geometry);
         NUnit.Framework.Assert.IsTrue(cut_polygon.GetPointCount() == 8);
         com.epl.geometry.Point2D pt0 = cut_polygon.GetXY(0);
         double a0 = cut_polygon.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 0, 0);
         NUnit.Framework.Assert.IsTrue(a0 == 25);
         com.epl.geometry.Point2D pt1 = cut_polygon.GetXY(1);
         double a1 = cut_polygon.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 1, 0);
         NUnit.Framework.Assert.IsTrue(a1 == 7);
         com.epl.geometry.Point2D pt2 = cut_polygon.GetXY(2);
         double a2 = cut_polygon.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 2, 0);
         NUnit.Framework.Assert.IsTrue(a2 == 12);
         com.epl.geometry.Point2D pt3 = cut_polygon.GetXY(3);
         double a3 = cut_polygon.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 3, 0);
         NUnit.Framework.Assert.IsTrue(a3 == 17);
         com.epl.geometry.Point2D pt4 = cut_polygon.GetXY(4);
         double a4 = cut_polygon.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 4, 0);
         NUnit.Framework.Assert.IsTrue(a4 == 20);
         com.epl.geometry.Point2D pt5 = cut_polygon.GetXY(5);
         double a5 = cut_polygon.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 5, 0);
         NUnit.Framework.Assert.IsTrue(a5 == 23);
         com.epl.geometry.Point2D pt6 = cut_polygon.GetXY(6);
         double a6 = cut_polygon.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 6, 0);
         NUnit.Framework.Assert.IsTrue(a6 == 33);
         com.epl.geometry.Point2D pt7 = cut_polygon.GetXY(7);
         double a7 = cut_polygon.GetAttributeAsDbl(com.epl.geometry.VertexDescription.Semantics.M, 7, 0);
         NUnit.Framework.Assert.IsTrue(a7 == 43);
     }
 }