arcgis engine道路接边代码

以下是 ArcGIS Engine 中道路接边的示例代码：

private void OnCreateNewLine(IEngineEditor editor, IGeometry geometry)
{
    //获取当前编辑图层的FeatureClass
    IFeatureClass featureClass = editor.TargetLayer.FeatureClass;
    //创建新的Feature
    IFeature newFeature = featureClass.CreateFeature();
    //设置新Feature的形状
    newFeature.Shape = geometry;
    //设置新Feature的属性
    newFeature.set_Value(newFeature.Fields.FindField("Name"), "New Road");
    //插入新Feature
    newFeature.Store();

    //获取编辑器的EditSketch对象
    IEngineEditSketch editSketch = editor as IEngineEditSketch;
    //获取当前编辑的线
    IPolyline polyline = editSketch.Geometry as IPolyline;
    //获取当前编辑线的起点和终点
    IPoint startPt = polyline.FromPoint;
    IPoint endPt = polyline.ToPoint;

    //创建缓冲区
    ITopologicalOperator topoOp = geometry as ITopologicalOperator;
    IGeometry buffer = topoOp.Buffer(10);

    //创建查询过滤器
    ISpatialFilter spatialFilter = new SpatialFilterClass();
    spatialFilter.Geometry = buffer;
    spatialFilter.GeometryField = featureClass.ShapeFieldName;
    spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;

    //查询相交的Feature
    IFeatureCursor featureCursor = featureClass.Search(spatialFilter, false);
    IFeature intersectFeature = featureCursor.NextFeature();

    while (intersectFeature != null)
    {
        //获取相交Feature的形状
        IGeometry intersectGeometry = intersectFeature.ShapeCopy;
        //获取相交Feature的顶点
        IPointCollection pointCollection = intersectGeometry as IPointCollection;
        for (int i = 0; i < pointCollection.PointCount; i++)
        {
            IPoint point = pointCollection.get_Point(i);
            //判断相交点是否在编辑线的起点和终点之间
            if (point.X >= Math.Min(startPt.X, endPt.X) && point.X <= Math.Max(startPt.X, endPt.X) &&
                point.Y >= Math.Min(startPt.Y, endPt.Y) && point.Y <= Math.Max(startPt.Y, endPt.Y))
            {
                //创建新的Feature
                IFeature newIntersectFeature = featureClass.CreateFeature();
                //设置新Feature的形状
                newIntersectFeature.Shape = point;
                //设置新Feature的属性
                newIntersectFeature.set_Value(newIntersectFeature.Fields.FindField("Name"), "Intersection");
                //插入新Feature
                newIntersectFeature.Store();
            }
        }
        intersectFeature = featureCursor.NextFeature();
    }
}

该代码演示了如何在道路编辑时，自动创建相交点 Feature，并将其插入到编辑图层中。其中，缓冲区大小通过 `topoOp.Buffer(10)` 设置为 10 个单位。您可以根据实际需求进行调整。