CoordinateSequence:

对象组成的序列#xff0c;可以表示线、多边形等几何对象的顶点。

CoordinateFilter:

用于对几何对象进行转换的工具类包括坐标系转换、平移、旋转、缩放等操作。

Envelope:

NetTopologySuite.Geometries.Coordinate;

//using

NetTopologySuite.Operation.Polygonize;

using

NetTopologySuite.Geometries.Point;

using

NetTopologySuite.Geometries.Polygon;

using

NetTopologySuite.Index.Quadtree;

using

NetTopologySuite.Index.Strtree;

using

NetTopologySuite.Operation.Linemerge;

using

NetTopologySuite.Geometries.GeometryCollection;

using

NetTopologySuite.Operation.Distance;

using

NetTopologySuite.Index.Bintree;

using

NetTopologySuite.IO.Esri.Shapefiles;

using

CommandClass(typeof(IfoxDemo.NTS自己))]//只允许此类快捷键命令namespace

IfoxDemo

NTS自己{[CommandMethod(xx)]public

static

point.Distance(line);ed.WriteMessage(//

distance:

polygon.Buffer(0.5);Env.Editor.WriteMessage(//计算一个几何对象的缓冲区

buffer:

line.Intersects(polygon);ed.WriteMessage(//判断两个几何对象是否相交

isIntersect:

line.Envelope.Union(polygon.Envelope);//

public

QuadtreeNetTopologySuite.Geometries.Geometry();//

index.Insert(envelope,line);//有bug//index.Insert(polygon);//

var

index.Query(line.EnvelopeInternal);//

Env.Editor.WriteMessage(查找与一个几何对象相交的对象

results

geometryFactory.CreatePoint(new

Coordinate(1.0,

geometryFactory.CreatePoint(new

Coordinate(2.0,

geometryFactory.CreatePoint(new

Coordinate(21.0,

geometryFactory.CreatePoint(new

Coordinate(23.0,

geometryFactory.CreatePoint(new

Coordinate(25.0,

geometryFactory.CreatePoint(new

Coordinate(27.0,

geometryFactory.CreatePoint(new

Coordinate(29.0,

distanceOp.Distance();Env.Editor.WriteMessage(//计算两点之间的距离

dist

geometryFactory.CreateLineString(new

Coordinate[]

geometryFactory.CreatePolygon(new

Coordinate[]

AngleUtility.AngleBetween(point1.Coordinate,

point3.Coordinate,

point2.Coordinate);ed.WriteMessage(//夹角不区分方向逆时针为正

夹角不区分方向

AngleUtility.AngleBetweenOriented(point1.Coordinate,

point3.Coordinate,

point2.Coordinate);ed.WriteMessage(//夹角区分方向

夹角区分方向

三角网DelaunayTriangulationBuilder

dtb

DelaunayTriangulationBuilder();dtb.SetSites(new

MultiPoint(new

(GeometryCollection)dtb.GetTriangles(geometryFactory);Env.Editor.WriteMessage(//Delaunay

三角网

LineMerger();lineMerger.Add(lineString);System.Collections.ICollection

mergedLines

(System.Collections.ICollection)lineMerger.GetMergedLineStrings();Env.Editor.WriteMessage(//合并线段

mergedLines

612)});Env.Editor.WriteMessage(

//创建几何图形Polygon

pg3.Union(pg4);Env.Editor.WriteMessage(//求并集:union

union

pg3.Difference(pg4);Env.Editor.WriteMessage(//求差集:difference

difference

geometryFactory2.CreateMultiPointFromCoords(coordinates);Env.Editor.WriteMessage(//包含多个点的集合MultiPoint:

points

GeometryFactory.Default).GetConvexHull();var

二维凸包

convexHull.GetConvexHull();Env.Editor.WriteMessage(//计算二维凸包geo:

geo

\n);Env.Editor.WriteMessage(//计算二维凸包Convex

hull

\n);//检测一个环是否是简单的(IsSimple)复杂的示例IsSimplefalse自相交var

points2

LinearRing(points2);ed.WriteMessage(//检测一个环是否是简单的(true)、(自相交false)

ring.IsSimple

LinearRing(points2);ed.WriteMessage(//检测多边形的顺逆时针

(ring2.IsCCW

至少有一个内角大于180°/////在C#环境中使用NetTopologySuite.IO.ShapeFile通常涉及以下步骤//1.引入必要的NuGet包如NetTopologySuite和NetTopologySuite.IO。

//2.创建ShapefileReader或ShapefileWriter对象来读取或写入Shapefile。

//3.使用ReadShape()或ReadFeature()方法获取Shapefile中的几何对象和属性。

//4.对数据进行操作如计算几何、筛选属性等。

//5.使用WriteShape()或WriteFeature()方法将修改后的数据写回Shapefile。

string

path

C:\Users\Administrator\Desktop\黄岗寺\黄岗寺.shp;//

(!File.Exists(path)){ed.WriteMessage(Shapefile

not

found.\n);return;}ShapefileReader

reader

C:\Users\Administrator\Desktop\黄岗寺\黄岗寺.dbf;if

(!File.Exists(dbfPath)){ed.WriteMessage(dbf

not

record.GetNames()){ed.WriteMessage(${fieldName,10}

{record[fieldName]}\n);}}/************

读取shp文件

C:\Users\Administrator\Desktop\黄岗寺\黄岗寺.shp;if

(!File.Exists(shpPath)){ed.WriteMessage(dbf

not

Shapefile.ReadAllGeometries(shpPath))//{//

Console.WriteLine(geometry);//}var

features

NetTopologySuite.IO.Esri.Shapefile.ReadAllFeatures(shpPath);int

0;foreach

features){i;//此时通过NTS库读取的Geometry

SRID为0没有坐标系var

feature.Geometry;ed.WriteMessage($geometry{i}:

geometry

GeometryFactory.Default.WithSRID(4326).CreateGeometry(geometry);ed.WriteMessage(wkbForWGS84

geometryForWGS84