NDBGJK5.0/Kingo.Plugins/Kingo.Plugin.MapView/Commands/TraceTool/SegmentEx.cs

using ESRI.ArcGIS.ADF;
using ESRI.ArcGIS.Geometry;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace KGIS.PlatformPlugin.Commands.Tools.TraceTool
{
    public static class SegmentEx
    {
        public static IPolyline ConvertSegmentToPolyline(this ISegment pSegment)
        {
            if (pSegment == null)
            {
                return null;
            }
            ISegmentCollection segmentCollection = new PolylineClass();
            if (segmentCollection != null)
            {
                ISegmentCollection arg_20_0 = segmentCollection;
                object value = System.Reflection.Missing.Value;
                object value2 = System.Reflection.Missing.Value;
                arg_20_0.AddSegment(pSegment, ref value, ref value2);
                return segmentCollection as IPolyline;
            }
            return null;
        }
        public static System.Collections.Generic.List<IPoint> GetInterserctPoint(this ISegment pSegment0, ISegment pSegment1)
        {
            IPolyline polyline = new PolylineClass();
            IPolyline polyline2 = new PolylineClass();
            ISegmentCollection arg_25_0 = polyline as ISegmentCollection;
            object value = System.Reflection.Missing.Value;
            object value2 = System.Reflection.Missing.Value;
            arg_25_0.AddSegment(pSegment0, ref value, ref value2);
            ISegmentCollection arg_43_0 = polyline2 as ISegmentCollection;
            object value3 = System.Reflection.Missing.Value;
            object value4 = System.Reflection.Missing.Value;
            arg_43_0.AddSegment(pSegment1, ref value3, ref value4);
            System.Collections.Generic.List<IPoint> list = new System.Collections.Generic.List<IPoint>();
            ITopologicalOperator topologicalOperator = polyline as ITopologicalOperator;
            IRelationalOperator relationalOperator = polyline as IRelationalOperator;
            if (relationalOperator.Crosses(polyline2))
            {
                IGeometry geometry = topologicalOperator.Intersect(polyline2, esriGeometryDimension.esriGeometry0Dimension);
                if (geometry != null && !geometry.IsEmpty)
                {
                    if (geometry is IPoint)
                    {
                        list.Add(geometry as IPoint);
                    }
                    if (geometry is IMultipoint)
                    {
                        IPointCollection pointCollection = geometry as IPointCollection;
                        int pointCount = pointCollection.PointCount;
                        for (int i = 0; i < pointCount; i++)
                        {
                            IPoint item = pointCollection.get_Point(i);
                            list.Add(item);
                        }
                    }
                }
            }
            ComReleaser.ReleaseCOMObject(polyline);
            ComReleaser.ReleaseCOMObject(polyline2);
            return list;
        }
    }
}